STM32F1: Import (rogerclarkmelbourne) SPI class (#15002)
This commit is contained in:
Tanguy Pruvot
Scott Lahteine
parent
4be98221f6
commit
012f577bb0
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@ -33,7 +33,7 @@
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#ifdef __STM32F1__
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#ifdef __STM32F1__
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#include "../../inc/MarlinConfig.h"
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#include "../../inc/MarlinConfig.h"
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#include <SPI.h>
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#include "SPI.h"
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// ------------------------
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// ------------------------
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// Public functions
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// Public functions
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741
Marlin/src/HAL/HAL_STM32F1/SPI.cpp
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741
Marlin/src/HAL/HAL_STM32F1/SPI.cpp
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@ -0,0 +1,741 @@
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/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2010 Perry Hung.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/**
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* @author Marti Bolivar <mbolivar@leaflabs.com>
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* @brief Wirish SPI implementation.
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*/
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#ifdef __STM32F1__
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#include "SPI.h"
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#include <libmaple/timer.h>
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#include <libmaple/util.h>
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#include <libmaple/rcc.h>
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#include <boards.h>
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#include <wirish.h>
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/** Time in ms for DMA receive timeout */
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#define DMA_TIMEOUT 100
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#if CYCLES_PER_MICROSECOND != 72
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#warning "Unexpected clock speed; SPI frequency calculation will be incorrect"
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#endif
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struct spi_pins {
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uint8_t nss;
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uint8_t sck;
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uint8_t miso;
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uint8_t mosi;
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};
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static const spi_pins* dev_to_spi_pins(spi_dev *dev);
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static void configure_gpios(spi_dev *dev, bool as_master);
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static spi_baud_rate determine_baud_rate(spi_dev *dev, uint32_t freq);
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#if (BOARD_NR_SPI >= 3) && !defined(STM32_HIGH_DENSITY)
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#error "The SPI library is misconfigured: 3 SPI ports only available on high density STM32 devices"
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#endif
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static const spi_pins board_spi_pins[] __FLASH__ = {
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#if BOARD_NR_SPI >= 1
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{ BOARD_SPI1_NSS_PIN,
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BOARD_SPI1_SCK_PIN,
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BOARD_SPI1_MISO_PIN,
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BOARD_SPI1_MOSI_PIN },
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#endif
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#if BOARD_NR_SPI >= 2
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{ BOARD_SPI2_NSS_PIN,
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BOARD_SPI2_SCK_PIN,
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BOARD_SPI2_MISO_PIN,
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BOARD_SPI2_MOSI_PIN },
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#endif
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#if BOARD_NR_SPI >= 3
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{ BOARD_SPI3_NSS_PIN,
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BOARD_SPI3_SCK_PIN,
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BOARD_SPI3_MISO_PIN,
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BOARD_SPI3_MOSI_PIN },
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#endif
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};
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#if BOARD_NR_SPI >= 1
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static void (*_spi1_this);
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#endif
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#if BOARD_NR_SPI >= 2
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static void (*_spi2_this);
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#endif
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#if BOARD_NR_SPI >= 3
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static void (*_spi3_this);
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#endif
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/**
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* Constructor
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*/
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SPIClass::SPIClass(uint32_t spi_num) {
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_currentSetting=&_settings[spi_num-1];// SPI channels are called 1 2 and 3 but the array is zero indexed
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switch (spi_num) {
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#if BOARD_NR_SPI >= 1
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case 1:
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_currentSetting->spi_d = SPI1;
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_spi1_this = (void*)this;
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break;
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#endif
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#if BOARD_NR_SPI >= 2
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case 2:
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_currentSetting->spi_d = SPI2;
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_spi2_this = (void*)this;
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break;
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#endif
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#if BOARD_NR_SPI >= 3
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case 3:
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_currentSetting->spi_d = SPI3;
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_spi3_this = (void*)this;
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break;
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#endif
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default: ASSERT(0);
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}
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// Init things specific to each SPI device
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// clock divider setup is a bit of hack, and needs to be improved at a later date.
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#if BOARD_NR_SPI >= 1
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_settings[0].spi_d = SPI1;
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_settings[0].clockDivider = determine_baud_rate(_settings[0].spi_d, _settings[0].clock);
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_settings[0].spiDmaDev = DMA1;
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_settings[0].spiTxDmaChannel = DMA_CH3;
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_settings[0].spiRxDmaChannel = DMA_CH2;
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#endif
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#if BOARD_NR_SPI >= 2
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_settings[1].spi_d = SPI2;
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_settings[1].clockDivider = determine_baud_rate(_settings[1].spi_d, _settings[1].clock);
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_settings[1].spiDmaDev = DMA1;
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_settings[1].spiTxDmaChannel = DMA_CH5;
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_settings[1].spiRxDmaChannel = DMA_CH4;
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#endif
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#if BOARD_NR_SPI >= 3
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_settings[2].spi_d = SPI3;
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_settings[2].clockDivider = determine_baud_rate(_settings[2].spi_d, _settings[2].clock);
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_settings[2].spiDmaDev = DMA2;
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_settings[2].spiTxDmaChannel = DMA_CH2;
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_settings[2].spiRxDmaChannel = DMA_CH1;
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#endif
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// added for DMA callbacks.
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_currentSetting->state = SPI_STATE_IDLE;
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}
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/*
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* Set up/tear down
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*/
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void SPIClass::updateSettings() {
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uint32_t flags = ((_currentSetting->bitOrder == MSBFIRST ? SPI_FRAME_MSB : SPI_FRAME_LSB) | _currentSetting->dataSize | SPI_SW_SLAVE | SPI_SOFT_SS);
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spi_master_enable(_currentSetting->spi_d, (spi_baud_rate)_currentSetting->clockDivider, (spi_mode)_currentSetting->dataMode, flags);
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}
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void SPIClass::begin() {
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spi_init(_currentSetting->spi_d);
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configure_gpios(_currentSetting->spi_d, 1);
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updateSettings();
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// added for DMA callbacks.
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_currentSetting->state = SPI_STATE_READY;
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}
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void SPIClass::beginSlave() {
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spi_init(_currentSetting->spi_d);
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configure_gpios(_currentSetting->spi_d, 0);
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uint32_t flags = ((_currentSetting->bitOrder == MSBFIRST ? SPI_FRAME_MSB : SPI_FRAME_LSB) | _currentSetting->dataSize);
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spi_slave_enable(_currentSetting->spi_d, (spi_mode)_currentSetting->dataMode, flags);
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// added for DMA callbacks.
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_currentSetting->state = SPI_STATE_READY;
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}
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void SPIClass::end() {
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if (!spi_is_enabled(_currentSetting->spi_d))
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return;
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// Follows RM0008's sequence for disabling a SPI in master/slave
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// full duplex mode.
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while (spi_is_rx_nonempty(_currentSetting->spi_d)) {
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// FIXME [0.1.0] remove this once you have an interrupt based driver
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volatile uint16_t rx __attribute__((unused)) = spi_rx_reg(_currentSetting->spi_d);
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}
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while (!spi_is_tx_empty(_currentSetting->spi_d)) {};
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while (spi_is_busy(_currentSetting->spi_d)) {};
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spi_peripheral_disable(_currentSetting->spi_d);
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// added for DMA callbacks.
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// Need to add unsetting the callbacks for the DMA channels.
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_currentSetting->state = SPI_STATE_IDLE;
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}
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/* Roger Clark added 3 functions */
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void SPIClass::setClockDivider(uint32_t clockDivider) {
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_currentSetting->clockDivider = clockDivider;
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uint32_t cr1 = _currentSetting->spi_d->regs->CR1 & ~(SPI_CR1_BR);
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_currentSetting->spi_d->regs->CR1 = cr1 | (clockDivider & SPI_CR1_BR);
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}
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void SPIClass::setBitOrder(BitOrder bitOrder) {
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_currentSetting->bitOrder = bitOrder;
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uint32_t cr1 = _currentSetting->spi_d->regs->CR1 & ~(SPI_CR1_LSBFIRST);
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if (bitOrder == LSBFIRST) cr1 |= SPI_CR1_LSBFIRST;
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_currentSetting->spi_d->regs->CR1 = cr1;
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}
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/* Victor Perez. Added to test changing datasize from 8 to 16 bit modes on the fly.
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* Input parameter should be SPI_CR1_DFF set to 0 or 1 on a 32bit word.
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*
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*/
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void SPIClass::setDataSize(uint32_t datasize) {
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_currentSetting->dataSize = datasize;
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uint32_t cr1 = _currentSetting->spi_d->regs->CR1 & ~(SPI_CR1_DFF);
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uint8_t en = spi_is_enabled(_currentSetting->spi_d);
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spi_peripheral_disable(_currentSetting->spi_d);
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_currentSetting->spi_d->regs->CR1 = cr1 | (datasize & SPI_CR1_DFF) | en;
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}
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void SPIClass::setDataMode(uint8_t dataMode) {
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/* Notes:
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As far as I can tell, the AVR numbers for dataMode appear to match the numbers required by the STM32
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From the AVR doc http://www.atmel.com/images/doc2585.pdf section 2.4
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SPI Mode CPOL CPHA Shift SCK-edge Capture SCK-edge
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0 0 0 Falling Rising
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1 0 1 Rising Falling
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2 1 0 Rising Falling
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3 1 1 Falling Rising
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On the STM32 it appears to be
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bit 1 - CPOL : Clock polarity
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(This bit should not be changed when communication is ongoing)
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0 : CLK to 0 when idle
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1 : CLK to 1 when idle
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bit 0 - CPHA : Clock phase
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(This bit should not be changed when communication is ongoing)
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0 : The first clock transition is the first data capture edge
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1 : The second clock transition is the first data capture edge
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If someone finds this is not the case or sees a logic error with this let me know ;-)
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*/
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_currentSetting->dataMode = dataMode;
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uint32_t cr1 = _currentSetting->spi_d->regs->CR1 & ~(SPI_CR1_CPOL|SPI_CR1_CPHA);
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_currentSetting->spi_d->regs->CR1 = cr1 | (dataMode & (SPI_CR1_CPOL|SPI_CR1_CPHA));
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}
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void SPIClass::beginTransaction(uint8_t pin, SPISettings settings) {
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setBitOrder(settings.bitOrder);
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setDataMode(settings.dataMode);
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setDataSize(settings.dataSize);
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setClockDivider(determine_baud_rate(_currentSetting->spi_d, settings.clock));
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begin();
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}
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void SPIClass::beginTransactionSlave(SPISettings settings) {
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setBitOrder(settings.bitOrder);
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setDataMode(settings.dataMode);
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setDataSize(settings.dataSize);
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beginSlave();
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}
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void SPIClass::endTransaction() { }
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/*
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* I/O
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*/
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uint16_t SPIClass::read() {
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while ( spi_is_rx_nonempty(_currentSetting->spi_d)==0 ) ;
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return (uint16)spi_rx_reg(_currentSetting->spi_d);
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}
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void SPIClass::read(uint8_t *buf, uint32_t len) {
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if (len == 0) return;
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spi_rx_reg(_currentSetting->spi_d); // clear the RX buffer in case a byte is waiting on it.
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spi_reg_map * regs = _currentSetting->spi_d->regs;
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// start sequence: write byte 0
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regs->DR = 0x00FF; // write the first byte
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// main loop
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while ( (--len) ) {
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while( !(regs->SR & SPI_SR_TXE) ); // wait for TXE flag
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noInterrupts(); // go atomic level - avoid interrupts to surely get the previously received data
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regs->DR = 0x00FF; // write the next data item to be transmitted into the SPI_DR register. This clears the TXE flag.
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while ( !(regs->SR & SPI_SR_RXNE) ); // wait till data is available in the DR register
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*buf++ = (uint8)(regs->DR); // read and store the received byte. This clears the RXNE flag.
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interrupts(); // let systick do its job
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}
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// read remaining last byte
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while ( !(regs->SR & SPI_SR_RXNE) ) {} // wait till data is available in the Rx register
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*buf++ = (uint8)(regs->DR); // read and store the received byte
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}
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void SPIClass::write(uint16_t data) {
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/* Added for 16bit data Victor Perez. Roger Clark
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* Improved speed by just directly writing the single byte to the SPI data reg and wait for completion,
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* by taking the Tx code from transfer(byte)
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* This almost doubles the speed of this function.
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*/
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spi_tx_reg(_currentSetting->spi_d, data); // write the data to be transmitted into the SPI_DR register (this clears the TXE flag)
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while (spi_is_tx_empty(_currentSetting->spi_d) == 0); // "5. Wait until TXE=1 ..."
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while (spi_is_busy(_currentSetting->spi_d) != 0); // "... and then wait until BSY=0 before disabling the SPI."
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}
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void SPIClass::write16(uint16_t data) {
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// Added by stevestrong: write two consecutive bytes in 8 bit mode (DFF=0)
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spi_tx_reg(_currentSetting->spi_d, data>>8); // write high byte
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while (spi_is_tx_empty(_currentSetting->spi_d) == 0); // Wait until TXE=1
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spi_tx_reg(_currentSetting->spi_d, data); // write low byte
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while (spi_is_tx_empty(_currentSetting->spi_d) == 0); // Wait until TXE=1
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while (spi_is_busy(_currentSetting->spi_d) != 0); // wait until BSY=0
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}
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void SPIClass::write(uint16_t data, uint32_t n) {
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// Added by stevstrong: Repeatedly send same data by the specified number of times
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spi_reg_map * regs = _currentSetting->spi_d->regs;
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while ( (n--)>0 ) {
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regs->DR = data; // write the data to be transmitted into the SPI_DR register (this clears the TXE flag)
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while ( (regs->SR & SPI_SR_TXE)==0 ) ; // wait till Tx empty
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}
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while ( (regs->SR & SPI_SR_BSY) != 0); // wait until BSY=0 before returning
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}
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void SPIClass::write(const void *data, uint32_t length) {
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spi_dev * spi_d = _currentSetting->spi_d;
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spi_tx(spi_d, data, length); // data can be array of bytes or words
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while (spi_is_tx_empty(spi_d) == 0); // "5. Wait until TXE=1 ..."
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while (spi_is_busy(spi_d) != 0); // "... and then wait until BSY=0 before disabling the SPI."
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}
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||||||
|
uint8_t SPIClass::transfer(uint8_t byte) const {
|
||||||
|
spi_dev * spi_d = _currentSetting->spi_d;
|
||||||
|
spi_rx_reg(spi_d); // read any previous data
|
||||||
|
spi_tx_reg(spi_d, byte); // Write the data item to be transmitted into the SPI_DR register
|
||||||
|
while (spi_is_tx_empty(spi_d) == 0); // "5. Wait until TXE=1 ..."
|
||||||
|
while (spi_is_busy(spi_d) != 0); // "... and then wait until BSY=0 before disabling the SPI."
|
||||||
|
return (uint8)spi_rx_reg(spi_d); // "... and read the last received data."
|
||||||
|
}
|
||||||
|
|
||||||
|
uint16_t SPIClass::transfer16(uint16_t data) const {
|
||||||
|
// Modified by stevestrong: write & read two consecutive bytes in 8 bit mode (DFF=0)
|
||||||
|
// This is more effective than two distinct byte transfers
|
||||||
|
spi_dev * spi_d = _currentSetting->spi_d;
|
||||||
|
spi_rx_reg(spi_d); // read any previous data
|
||||||
|
spi_tx_reg(spi_d, data>>8); // write high byte
|
||||||
|
while (spi_is_tx_empty(spi_d) == 0); // wait until TXE=1
|
||||||
|
while (spi_is_busy(spi_d) != 0); // wait until BSY=0
|
||||||
|
uint16_t ret = spi_rx_reg(spi_d)<<8; // read and shift high byte
|
||||||
|
spi_tx_reg(spi_d, data); // write low byte
|
||||||
|
while (spi_is_tx_empty(spi_d) == 0); // wait until TXE=1
|
||||||
|
while (spi_is_busy(spi_d) != 0); // wait until BSY=0
|
||||||
|
ret += spi_rx_reg(spi_d); // read low byte
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Roger Clark and Victor Perez, 2015
|
||||||
|
* Performs a DMA SPI transfer with at least a receive buffer.
|
||||||
|
* If a TX buffer is not provided, FF is sent over and over for the lenght of the transfer.
|
||||||
|
* On exit TX buffer is not modified, and RX buffer cotains the received data.
|
||||||
|
* Still in progress.
|
||||||
|
*/
|
||||||
|
void SPIClass::dmaTransferSet(const void *transmitBuf, void *receiveBuf) {
|
||||||
|
dma_init(_currentSetting->spiDmaDev);
|
||||||
|
//spi_rx_dma_enable(_currentSetting->spi_d);
|
||||||
|
//spi_tx_dma_enable(_currentSetting->spi_d);
|
||||||
|
dma_xfer_size dma_bit_size = (_currentSetting->dataSize==DATA_SIZE_16BIT) ? DMA_SIZE_16BITS : DMA_SIZE_8BITS;
|
||||||
|
dma_setup_transfer(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel, &_currentSetting->spi_d->regs->DR,
|
||||||
|
dma_bit_size, receiveBuf, dma_bit_size, (DMA_MINC_MODE | DMA_TRNS_CMPLT ));// receive buffer DMA
|
||||||
|
if (!transmitBuf) {
|
||||||
|
transmitBuf = &ff;
|
||||||
|
dma_setup_transfer(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, &_currentSetting->spi_d->regs->DR,
|
||||||
|
dma_bit_size, (volatile void*)transmitBuf, dma_bit_size, (DMA_FROM_MEM));// Transmit FF repeatedly
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
dma_setup_transfer(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, &_currentSetting->spi_d->regs->DR,
|
||||||
|
dma_bit_size, (volatile void*)transmitBuf, dma_bit_size, (DMA_MINC_MODE | DMA_FROM_MEM ));// Transmit buffer DMA
|
||||||
|
}
|
||||||
|
dma_set_priority(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, DMA_PRIORITY_LOW);
|
||||||
|
dma_set_priority(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel, DMA_PRIORITY_VERY_HIGH);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::dmaTransferRepeat(uint16_t length) {
|
||||||
|
if (length == 0) return 0;
|
||||||
|
if (spi_is_rx_nonempty(_currentSetting->spi_d) == 1) spi_rx_reg(_currentSetting->spi_d);
|
||||||
|
_currentSetting->state = SPI_STATE_TRANSFER;
|
||||||
|
dma_set_num_transfers(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel, length);
|
||||||
|
dma_set_num_transfers(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, length);
|
||||||
|
dma_enable(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel);// enable receive
|
||||||
|
dma_enable(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);// enable transmit
|
||||||
|
spi_rx_dma_enable(_currentSetting->spi_d);
|
||||||
|
spi_tx_dma_enable(_currentSetting->spi_d);
|
||||||
|
if (_currentSetting->receiveCallback)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
//uint32_t m = millis();
|
||||||
|
uint8_t b = 0;
|
||||||
|
uint32_t m = millis();
|
||||||
|
while ((dma_get_isr_bits(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel) & DMA_ISR_TCIF1) == 0) {
|
||||||
|
//Avoid interrupts and just loop waiting for the flag to be set.
|
||||||
|
if ((millis() - m) > DMA_TIMEOUT) { b = 2; break; }
|
||||||
|
}
|
||||||
|
|
||||||
|
while (spi_is_tx_empty(_currentSetting->spi_d) == 0); // "5. Wait until TXE=1 ..."
|
||||||
|
while (spi_is_busy(_currentSetting->spi_d) != 0); // "... and then wait until BSY=0 before disabling the SPI."
|
||||||
|
spi_tx_dma_disable(_currentSetting->spi_d);
|
||||||
|
spi_rx_dma_disable(_currentSetting->spi_d);
|
||||||
|
dma_disable(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
dma_disable(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel);
|
||||||
|
dma_clear_isr_bits(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel);
|
||||||
|
dma_clear_isr_bits(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
_currentSetting->state = SPI_STATE_READY;
|
||||||
|
return b;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Roger Clark and Victor Perez, 2015
|
||||||
|
* Performs a DMA SPI transfer with at least a receive buffer.
|
||||||
|
* If a TX buffer is not provided, FF is sent over and over for the length of the transfer.
|
||||||
|
* On exit TX buffer is not modified, and RX buffer contains the received data.
|
||||||
|
* Still in progress.
|
||||||
|
*/
|
||||||
|
uint8_t SPIClass::dmaTransfer(const void *transmitBuf, void *receiveBuf, uint16_t length) {
|
||||||
|
dmaTransferSet(transmitBuf, receiveBuf);
|
||||||
|
return dmaTransferRepeat(length);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Roger Clark and Victor Perez, 2015
|
||||||
|
* Performs a DMA SPI send using a TX buffer.
|
||||||
|
* On exit TX buffer is not modified.
|
||||||
|
* Still in progress.
|
||||||
|
* 2016 - stevstrong - reworked to automatically detect bit size from SPI setting
|
||||||
|
*/
|
||||||
|
void SPIClass::dmaSendSet(const void * transmitBuf, bool minc) {
|
||||||
|
uint32_t flags = ( (DMA_MINC_MODE*minc) | DMA_FROM_MEM | DMA_TRNS_CMPLT);
|
||||||
|
dma_init(_currentSetting->spiDmaDev);
|
||||||
|
dma_xfer_size dma_bit_size = (_currentSetting->dataSize==DATA_SIZE_16BIT) ? DMA_SIZE_16BITS : DMA_SIZE_8BITS;
|
||||||
|
dma_setup_transfer(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, &_currentSetting->spi_d->regs->DR, dma_bit_size,
|
||||||
|
(volatile void*)transmitBuf, dma_bit_size, flags);// Transmit buffer DMA
|
||||||
|
dma_set_priority(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, DMA_PRIORITY_LOW);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::dmaSendRepeat(uint16_t length) {
|
||||||
|
if (length == 0) return 0;
|
||||||
|
|
||||||
|
dma_clear_isr_bits(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
dma_set_num_transfers(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, length);
|
||||||
|
_currentSetting->state = SPI_STATE_TRANSMIT;
|
||||||
|
dma_enable(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);// enable transmit
|
||||||
|
spi_tx_dma_enable(_currentSetting->spi_d);
|
||||||
|
if (_currentSetting->transmitCallback)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
uint32_t m = millis();
|
||||||
|
uint8_t b = 0;
|
||||||
|
while ((dma_get_isr_bits(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel) & DMA_ISR_TCIF1)==0) {
|
||||||
|
//Avoid interrupts and just loop waiting for the flag to be set.
|
||||||
|
if ((millis() - m) > DMA_TIMEOUT) { b = 2; break; }
|
||||||
|
}
|
||||||
|
while (spi_is_tx_empty(_currentSetting->spi_d) == 0); // "5. Wait until TXE=1 ..."
|
||||||
|
while (spi_is_busy(_currentSetting->spi_d) != 0); // "... and then wait until BSY=0 before disabling the SPI."
|
||||||
|
spi_tx_dma_disable(_currentSetting->spi_d);
|
||||||
|
dma_disable(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
dma_clear_isr_bits(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
_currentSetting->state = SPI_STATE_READY;
|
||||||
|
return b;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::dmaSend(const void * transmitBuf, uint16_t length, bool minc) {
|
||||||
|
dmaSendSet(transmitBuf, minc);
|
||||||
|
return dmaSendRepeat(length);
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::dmaSendAsync(const void * transmitBuf, uint16_t length, bool minc) {
|
||||||
|
uint8_t b = 0;
|
||||||
|
|
||||||
|
if (_currentSetting->state != SPI_STATE_READY) {
|
||||||
|
uint32_t m = millis();
|
||||||
|
while ((dma_get_isr_bits(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel) & DMA_ISR_TCIF1)==0) {
|
||||||
|
//Avoid interrupts and just loop waiting for the flag to be set.
|
||||||
|
//delayMicroseconds(10);
|
||||||
|
if ((millis() - m) > DMA_TIMEOUT) { b = 2; break; }
|
||||||
|
}
|
||||||
|
|
||||||
|
while (spi_is_tx_empty(_currentSetting->spi_d) == 0); // "5. Wait until TXE=1 ..."
|
||||||
|
while (spi_is_busy(_currentSetting->spi_d) != 0); // "... and then wait until BSY=0 before disabling the SPI."
|
||||||
|
spi_tx_dma_disable(_currentSetting->spi_d);
|
||||||
|
dma_disable(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
_currentSetting->state = SPI_STATE_READY;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (length == 0) return 0;
|
||||||
|
uint32_t flags = ( (DMA_MINC_MODE*minc) | DMA_FROM_MEM | DMA_TRNS_CMPLT);
|
||||||
|
|
||||||
|
dma_init(_currentSetting->spiDmaDev);
|
||||||
|
// TX
|
||||||
|
dma_xfer_size dma_bit_size = (_currentSetting->dataSize==DATA_SIZE_16BIT) ? DMA_SIZE_16BITS : DMA_SIZE_8BITS;
|
||||||
|
dma_setup_transfer(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, &_currentSetting->spi_d->regs->DR,
|
||||||
|
dma_bit_size, (volatile void*)transmitBuf, dma_bit_size, flags);// Transmit buffer DMA
|
||||||
|
dma_set_num_transfers(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, length);
|
||||||
|
dma_clear_isr_bits(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
dma_enable(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);// enable transmit
|
||||||
|
spi_tx_dma_enable(_currentSetting->spi_d);
|
||||||
|
|
||||||
|
_currentSetting->state = SPI_STATE_TRANSMIT;
|
||||||
|
return b;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
/**
|
||||||
|
* New functions added to manage callbacks.
|
||||||
|
* Victor Perez 2017
|
||||||
|
*/
|
||||||
|
void SPIClass::onReceive(void(*callback)(void)) {
|
||||||
|
_currentSetting->receiveCallback = callback;
|
||||||
|
if (callback) {
|
||||||
|
switch (_currentSetting->spi_d->clk_id) {
|
||||||
|
#if BOARD_NR_SPI >= 1
|
||||||
|
case RCC_SPI1:
|
||||||
|
dma_attach_interrupt(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel, &SPIClass::_spi1EventCallback);
|
||||||
|
break;
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 2
|
||||||
|
case RCC_SPI2:
|
||||||
|
dma_attach_interrupt(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel, &SPIClass::_spi2EventCallback);
|
||||||
|
break;
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 3
|
||||||
|
case RCC_SPI3:
|
||||||
|
dma_attach_interrupt(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel, &SPIClass::_spi3EventCallback);
|
||||||
|
break;
|
||||||
|
#endif
|
||||||
|
default:
|
||||||
|
ASSERT(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
dma_detach_interrupt(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void SPIClass::onTransmit(void(*callback)(void)) {
|
||||||
|
_currentSetting->transmitCallback = callback;
|
||||||
|
if (callback) {
|
||||||
|
switch (_currentSetting->spi_d->clk_id) {
|
||||||
|
#if BOARD_NR_SPI >= 1
|
||||||
|
case RCC_SPI1:
|
||||||
|
dma_attach_interrupt(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, &SPIClass::_spi1EventCallback);
|
||||||
|
break;
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 2
|
||||||
|
case RCC_SPI2:
|
||||||
|
dma_attach_interrupt(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, &SPIClass::_spi2EventCallback);
|
||||||
|
break;
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 3
|
||||||
|
case RCC_SPI3:
|
||||||
|
dma_attach_interrupt(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel, &SPIClass::_spi3EventCallback);
|
||||||
|
break;
|
||||||
|
#endif
|
||||||
|
default:
|
||||||
|
ASSERT(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
dma_detach_interrupt(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* TODO: check if better to first call the customer code, next disable the DMA requests.
|
||||||
|
* Also see if we need to check whether callbacks are set or not, may be better to be checked
|
||||||
|
* during the initial setup and only set the callback to EventCallback if they are set.
|
||||||
|
*/
|
||||||
|
void SPIClass::EventCallback() {
|
||||||
|
while (spi_is_tx_empty(_currentSetting->spi_d) == 0); // "5. Wait until TXE=1 ..."
|
||||||
|
while (spi_is_busy(_currentSetting->spi_d) != 0); // "... and then wait until BSY=0"
|
||||||
|
switch (_currentSetting->state) {
|
||||||
|
case SPI_STATE_TRANSFER:
|
||||||
|
while (spi_is_rx_nonempty(_currentSetting->spi_d));
|
||||||
|
_currentSetting->state = SPI_STATE_READY;
|
||||||
|
spi_tx_dma_disable(_currentSetting->spi_d);
|
||||||
|
spi_rx_dma_disable(_currentSetting->spi_d);
|
||||||
|
//dma_disable(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
//dma_disable(_currentSetting->spiDmaDev, _currentSetting->spiRxDmaChannel);
|
||||||
|
if (_currentSetting->receiveCallback)
|
||||||
|
_currentSetting->receiveCallback();
|
||||||
|
break;
|
||||||
|
case SPI_STATE_TRANSMIT:
|
||||||
|
_currentSetting->state = SPI_STATE_READY;
|
||||||
|
spi_tx_dma_disable(_currentSetting->spi_d);
|
||||||
|
//dma_disable(_currentSetting->spiDmaDev, _currentSetting->spiTxDmaChannel);
|
||||||
|
if (_currentSetting->transmitCallback)
|
||||||
|
_currentSetting->transmitCallback();
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void SPIClass::attachInterrupt() {
|
||||||
|
// Should be enableInterrupt()
|
||||||
|
}
|
||||||
|
|
||||||
|
void SPIClass::detachInterrupt() {
|
||||||
|
// Should be disableInterrupt()
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Pin accessors
|
||||||
|
*/
|
||||||
|
|
||||||
|
uint8_t SPIClass::misoPin() {
|
||||||
|
return dev_to_spi_pins(_currentSetting->spi_d)->miso;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::mosiPin() {
|
||||||
|
return dev_to_spi_pins(_currentSetting->spi_d)->mosi;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::sckPin() {
|
||||||
|
return dev_to_spi_pins(_currentSetting->spi_d)->sck;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::nssPin() {
|
||||||
|
return dev_to_spi_pins(_currentSetting->spi_d)->nss;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Deprecated functions
|
||||||
|
*/
|
||||||
|
|
||||||
|
uint8_t SPIClass::send(uint8_t data) {
|
||||||
|
this->write(data);
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::send(uint8_t *buf, uint32_t len) {
|
||||||
|
this->write(buf, len);
|
||||||
|
return len;
|
||||||
|
}
|
||||||
|
|
||||||
|
uint8_t SPIClass::recv() {
|
||||||
|
return this->read();
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* DMA call back functions, one per port.
|
||||||
|
*/
|
||||||
|
#if BOARD_NR_SPI >= 1
|
||||||
|
void SPIClass::_spi1EventCallback() {
|
||||||
|
reinterpret_cast<class SPIClass*>(_spi1_this)->EventCallback();
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 2
|
||||||
|
void SPIClass::_spi2EventCallback() {
|
||||||
|
reinterpret_cast<class SPIClass*>(_spi2_this)->EventCallback();
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 3
|
||||||
|
void SPIClass::_spi3EventCallback() {
|
||||||
|
reinterpret_cast<class SPIClass*>(_spi3_this)->EventCallback();
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Auxiliary functions
|
||||||
|
*/
|
||||||
|
static const spi_pins* dev_to_spi_pins(spi_dev *dev) {
|
||||||
|
switch (dev->clk_id) {
|
||||||
|
#if BOARD_NR_SPI >= 1
|
||||||
|
case RCC_SPI1: return board_spi_pins;
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 2
|
||||||
|
case RCC_SPI2: return board_spi_pins + 1;
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 3
|
||||||
|
case RCC_SPI3: return board_spi_pins + 2;
|
||||||
|
#endif
|
||||||
|
default: return NULL;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void disable_pwm(const stm32_pin_info *i) {
|
||||||
|
if (i->timer_device)
|
||||||
|
timer_set_mode(i->timer_device, i->timer_channel, TIMER_DISABLED);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void configure_gpios(spi_dev *dev, bool as_master) {
|
||||||
|
const spi_pins *pins = dev_to_spi_pins(dev);
|
||||||
|
if (!pins) return;
|
||||||
|
|
||||||
|
const stm32_pin_info *nssi = &PIN_MAP[pins->nss],
|
||||||
|
*scki = &PIN_MAP[pins->sck],
|
||||||
|
*misoi = &PIN_MAP[pins->miso],
|
||||||
|
*mosii = &PIN_MAP[pins->mosi];
|
||||||
|
|
||||||
|
disable_pwm(nssi);
|
||||||
|
disable_pwm(scki);
|
||||||
|
disable_pwm(misoi);
|
||||||
|
disable_pwm(mosii);
|
||||||
|
|
||||||
|
spi_config_gpios(dev, as_master, nssi->gpio_device, nssi->gpio_bit,
|
||||||
|
scki->gpio_device, scki->gpio_bit, misoi->gpio_bit,
|
||||||
|
mosii->gpio_bit);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const spi_baud_rate baud_rates[8] __FLASH__ = {
|
||||||
|
SPI_BAUD_PCLK_DIV_2,
|
||||||
|
SPI_BAUD_PCLK_DIV_4,
|
||||||
|
SPI_BAUD_PCLK_DIV_8,
|
||||||
|
SPI_BAUD_PCLK_DIV_16,
|
||||||
|
SPI_BAUD_PCLK_DIV_32,
|
||||||
|
SPI_BAUD_PCLK_DIV_64,
|
||||||
|
SPI_BAUD_PCLK_DIV_128,
|
||||||
|
SPI_BAUD_PCLK_DIV_256,
|
||||||
|
};
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Note: This assumes you're on a LeafLabs-style board
|
||||||
|
* (CYCLES_PER_MICROSECOND == 72, APB2 at 72MHz, APB1 at 36MHz).
|
||||||
|
*/
|
||||||
|
static spi_baud_rate determine_baud_rate(spi_dev *dev, uint32_t freq) {
|
||||||
|
uint32_t clock = 0;
|
||||||
|
switch (rcc_dev_clk(dev->clk_id)) {
|
||||||
|
case RCC_AHB:
|
||||||
|
case RCC_APB2: clock = STM32_PCLK2; break; // 72 Mhz
|
||||||
|
case RCC_APB1: clock = STM32_PCLK1; break; // 36 Mhz
|
||||||
|
}
|
||||||
|
clock >>= 1;
|
||||||
|
|
||||||
|
uint8_t i = 0;
|
||||||
|
while (i < 7 && freq < clock) { clock >>= 1; i++; }
|
||||||
|
return baud_rates[i];
|
||||||
|
}
|
||||||
|
|
||||||
|
SPIClass SPI(1);
|
||||||
|
|
||||||
|
#endif // __STM32F1__
|
||||||
409
Marlin/src/HAL/HAL_STM32F1/SPI.h
Normal file
409
Marlin/src/HAL/HAL_STM32F1/SPI.h
Normal file
|
|
@ -0,0 +1,409 @@
|
||||||
|
/******************************************************************************
|
||||||
|
* The MIT License
|
||||||
|
*
|
||||||
|
* Copyright (c) 2010 Perry Hung.
|
||||||
|
*
|
||||||
|
* Permission is hereby granted, free of charge, to any person
|
||||||
|
* obtaining a copy of this software and associated documentation
|
||||||
|
* files (the "Software"), to deal in the Software without
|
||||||
|
* restriction, including without limitation the rights to use, copy,
|
||||||
|
* modify, merge, publish, distribute, sublicense, and/or sell copies
|
||||||
|
* of the Software, and to permit persons to whom the Software is
|
||||||
|
* furnished to do so, subject to the following conditions:
|
||||||
|
*
|
||||||
|
* The above copyright notice and this permission notice shall be
|
||||||
|
* included in all copies or substantial portions of the Software.
|
||||||
|
*
|
||||||
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||||
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||||
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||||
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||||
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||||
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||||
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||||
|
* SOFTWARE.
|
||||||
|
*****************************************************************************/
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <libmaple/libmaple_types.h>
|
||||||
|
#include <libmaple/spi.h>
|
||||||
|
#include <libmaple/dma.h>
|
||||||
|
|
||||||
|
#include <boards.h>
|
||||||
|
#include <stdint.h>
|
||||||
|
#include <wirish.h>
|
||||||
|
|
||||||
|
// SPI_HAS_TRANSACTION means SPI has
|
||||||
|
// - beginTransaction()
|
||||||
|
// - endTransaction()
|
||||||
|
// - usingInterrupt()
|
||||||
|
// - SPISetting(clock, bitOrder, dataMode)
|
||||||
|
//#define SPI_HAS_TRANSACTION
|
||||||
|
|
||||||
|
#define SPI_CLOCK_DIV2 SPI_BAUD_PCLK_DIV_2
|
||||||
|
#define SPI_CLOCK_DIV4 SPI_BAUD_PCLK_DIV_4
|
||||||
|
#define SPI_CLOCK_DIV8 SPI_BAUD_PCLK_DIV_8
|
||||||
|
#define SPI_CLOCK_DIV16 SPI_BAUD_PCLK_DIV_16
|
||||||
|
#define SPI_CLOCK_DIV32 SPI_BAUD_PCLK_DIV_32
|
||||||
|
#define SPI_CLOCK_DIV64 SPI_BAUD_PCLK_DIV_64
|
||||||
|
#define SPI_CLOCK_DIV128 SPI_BAUD_PCLK_DIV_128
|
||||||
|
#define SPI_CLOCK_DIV256 SPI_BAUD_PCLK_DIV_256
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Roger Clark. 20150106
|
||||||
|
* Commented out redundant AVR defined
|
||||||
|
*
|
||||||
|
#define SPI_MODE_MASK 0x0C // CPOL = bit 3, CPHA = bit 2 on SPCR
|
||||||
|
#define SPI_CLOCK_MASK 0x03 // SPR1 = bit 1, SPR0 = bit 0 on SPCR
|
||||||
|
#define SPI_2XCLOCK_MASK 0x01 // SPI2X = bit 0 on SPSR
|
||||||
|
|
||||||
|
// define SPI_AVR_EIMSK for AVR boards with external interrupt pins
|
||||||
|
#if defined(EIMSK)
|
||||||
|
#define SPI_AVR_EIMSK EIMSK
|
||||||
|
#elif defined(GICR)
|
||||||
|
#define SPI_AVR_EIMSK GICR
|
||||||
|
#elif defined(GIMSK)
|
||||||
|
#define SPI_AVR_EIMSK GIMSK
|
||||||
|
#endif
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef STM32_LSBFIRST
|
||||||
|
#define STM32_LSBFIRST 0
|
||||||
|
#endif
|
||||||
|
#ifndef STM32_MSBFIRST
|
||||||
|
#define STM32_MSBFIRST 1
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// PC13 or PA4
|
||||||
|
#define BOARD_SPI_DEFAULT_SS PA4
|
||||||
|
//#define BOARD_SPI_DEFAULT_SS PC13
|
||||||
|
|
||||||
|
#define SPI_MODE0 SPI_MODE_0
|
||||||
|
#define SPI_MODE1 SPI_MODE_1
|
||||||
|
#define SPI_MODE2 SPI_MODE_2
|
||||||
|
#define SPI_MODE3 SPI_MODE_3
|
||||||
|
|
||||||
|
#define DATA_SIZE_8BIT SPI_CR1_DFF_8_BIT
|
||||||
|
#define DATA_SIZE_16BIT SPI_CR1_DFF_16_BIT
|
||||||
|
|
||||||
|
typedef enum {
|
||||||
|
SPI_STATE_IDLE,
|
||||||
|
SPI_STATE_READY,
|
||||||
|
SPI_STATE_RECEIVE,
|
||||||
|
SPI_STATE_TRANSMIT,
|
||||||
|
SPI_STATE_TRANSFER
|
||||||
|
} spi_mode_t;
|
||||||
|
|
||||||
|
class SPISettings {
|
||||||
|
public:
|
||||||
|
SPISettings(uint32_t clock, BitOrder bitOrder, uint8_t dataMode) {
|
||||||
|
if (__builtin_constant_p(clock))
|
||||||
|
init_AlwaysInline(clock, bitOrder, dataMode, DATA_SIZE_8BIT);
|
||||||
|
else
|
||||||
|
init_MightInline(clock, bitOrder, dataMode, DATA_SIZE_8BIT);
|
||||||
|
}
|
||||||
|
SPISettings(uint32_t clock, BitOrder bitOrder, uint8_t dataMode, uint32_t dataSize) {
|
||||||
|
if (__builtin_constant_p(clock))
|
||||||
|
init_AlwaysInline(clock, bitOrder, dataMode, dataSize);
|
||||||
|
else
|
||||||
|
init_MightInline(clock, bitOrder, dataMode, dataSize);
|
||||||
|
}
|
||||||
|
SPISettings(uint32_t clock) {
|
||||||
|
if (__builtin_constant_p(clock))
|
||||||
|
init_AlwaysInline(clock, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
|
||||||
|
else
|
||||||
|
init_MightInline(clock, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
|
||||||
|
}
|
||||||
|
SPISettings() {
|
||||||
|
init_AlwaysInline(4000000, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
|
||||||
|
}
|
||||||
|
private:
|
||||||
|
void init_MightInline(uint32_t clock, BitOrder bitOrder, uint8_t dataMode, uint32_t dataSize) {
|
||||||
|
init_AlwaysInline(clock, bitOrder, dataMode, dataSize);
|
||||||
|
}
|
||||||
|
void init_AlwaysInline(uint32_t clock, BitOrder bitOrder, uint8_t dataMode, uint32_t dataSize) __attribute__((__always_inline__)) {
|
||||||
|
this->clock = clock;
|
||||||
|
this->bitOrder = bitOrder;
|
||||||
|
this->dataMode = dataMode;
|
||||||
|
this->dataSize = dataSize;
|
||||||
|
}
|
||||||
|
uint32_t clock;
|
||||||
|
uint32_t dataSize;
|
||||||
|
uint32_t clockDivider;
|
||||||
|
BitOrder bitOrder;
|
||||||
|
uint8_t dataMode;
|
||||||
|
uint8_t _SSPin;
|
||||||
|
volatile spi_mode_t state;
|
||||||
|
spi_dev *spi_d;
|
||||||
|
dma_channel spiRxDmaChannel, spiTxDmaChannel;
|
||||||
|
dma_dev* spiDmaDev;
|
||||||
|
void (*receiveCallback)(void) = NULL;
|
||||||
|
void (*transmitCallback)(void) = NULL;
|
||||||
|
|
||||||
|
friend class SPIClass;
|
||||||
|
};
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Kept for compat.
|
||||||
|
*/
|
||||||
|
static const uint8_t ff = 0xFF;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Wirish SPI interface.
|
||||||
|
*
|
||||||
|
* This implementation uses software slave management, so the caller
|
||||||
|
* is responsible for controlling the slave select line.
|
||||||
|
*/
|
||||||
|
class SPIClass {
|
||||||
|
|
||||||
|
public:
|
||||||
|
/**
|
||||||
|
* @param spiPortNumber Number of the SPI port to manage.
|
||||||
|
*/
|
||||||
|
SPIClass(uint32_t spiPortNumber);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Equivalent to begin(SPI_1_125MHZ, MSBFIRST, 0).
|
||||||
|
*/
|
||||||
|
void begin();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Turn on a SPI port and set its GPIO pin modes for use as a slave.
|
||||||
|
*
|
||||||
|
* SPI port is enabled in full duplex mode, with software slave management.
|
||||||
|
*
|
||||||
|
* @param bitOrder Either LSBFIRST (little-endian) or MSBFIRST(big-endian)
|
||||||
|
* @param mode SPI mode to use
|
||||||
|
*/
|
||||||
|
void beginSlave(uint32_t bitOrder, uint32_t mode);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Equivalent to beginSlave(MSBFIRST, 0).
|
||||||
|
*/
|
||||||
|
void beginSlave();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Disables the SPI port, but leaves its GPIO pin modes unchanged.
|
||||||
|
*/
|
||||||
|
void end();
|
||||||
|
|
||||||
|
void beginTransaction(SPISettings settings) { beginTransaction(BOARD_SPI_DEFAULT_SS, settings); }
|
||||||
|
void beginTransaction(uint8_t pin, SPISettings settings);
|
||||||
|
void endTransaction();
|
||||||
|
|
||||||
|
void beginTransactionSlave(SPISettings settings);
|
||||||
|
|
||||||
|
void setClockDivider(uint32_t clockDivider);
|
||||||
|
void setBitOrder(BitOrder bitOrder);
|
||||||
|
void setDataMode(uint8_t dataMode);
|
||||||
|
|
||||||
|
// SPI Configuration methods
|
||||||
|
void attachInterrupt();
|
||||||
|
void detachInterrupt();
|
||||||
|
|
||||||
|
/* Victor Perez. Added to change datasize from 8 to 16 bit modes on the fly.
|
||||||
|
* Input parameter should be SPI_CR1_DFF set to 0 or 1 on a 32bit word.
|
||||||
|
* Requires an added function spi_data_size on STM32F1 / cores / maple / libmaple / spi.c
|
||||||
|
*/
|
||||||
|
void setDataSize(uint32_t ds);
|
||||||
|
|
||||||
|
/* Victor Perez 2017. Added to set and clear callback functions for callback
|
||||||
|
* on DMA transfer completion.
|
||||||
|
* onReceive used to set the callback in case of dmaTransfer (tx/rx), once rx is completed
|
||||||
|
* onTransmit used to set the callback in case of dmaSend (tx only). That function
|
||||||
|
* will NOT be called in case of TX/RX
|
||||||
|
*/
|
||||||
|
void onReceive(void(*)(void));
|
||||||
|
void onTransmit(void(*)(void));
|
||||||
|
|
||||||
|
/*
|
||||||
|
* I/O
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Return the next unread byte/word.
|
||||||
|
*
|
||||||
|
* If there is no unread byte/word waiting, this function will block
|
||||||
|
* until one is received.
|
||||||
|
*/
|
||||||
|
uint16_t read();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Read length bytes, storing them into buffer.
|
||||||
|
* @param buffer Buffer to store received bytes into.
|
||||||
|
* @param length Number of bytes to store in buffer. This
|
||||||
|
* function will block until the desired number of
|
||||||
|
* bytes have been read.
|
||||||
|
*/
|
||||||
|
void read(uint8_t *buffer, uint32_t length);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Transmit one byte/word.
|
||||||
|
* @param data to transmit.
|
||||||
|
*/
|
||||||
|
void write(uint16_t data);
|
||||||
|
void write16(uint16_t data); // write 2 bytes in 8 bit mode (DFF=0)
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Transmit one byte/word a specified number of times.
|
||||||
|
* @param data to transmit.
|
||||||
|
*/
|
||||||
|
void write(uint16_t data, uint32_t n);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Transmit multiple bytes/words.
|
||||||
|
* @param buffer Bytes/words to transmit.
|
||||||
|
* @param length Number of bytes/words in buffer to transmit.
|
||||||
|
*/
|
||||||
|
void write(const void * buffer, uint32_t length);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Transmit a byte, then return the next unread byte.
|
||||||
|
*
|
||||||
|
* This function transmits before receiving.
|
||||||
|
*
|
||||||
|
* @param data Byte to transmit.
|
||||||
|
* @return Next unread byte.
|
||||||
|
*/
|
||||||
|
uint8_t transfer(uint8_t data) const;
|
||||||
|
uint16_t transfer16(uint16_t data) const;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Sets up a DMA Transfer for "length" bytes.
|
||||||
|
* The transfer mode (8 or 16 bit mode) is evaluated from the SPI peripheral setting.
|
||||||
|
*
|
||||||
|
* This function transmits and receives to buffers.
|
||||||
|
*
|
||||||
|
* @param transmitBuf buffer Bytes to transmit. If passed as 0, it sends FF repeatedly for "length" bytes
|
||||||
|
* @param receiveBuf buffer Bytes to save received data.
|
||||||
|
* @param length Number of bytes in buffer to transmit.
|
||||||
|
*/
|
||||||
|
uint8_t dmaTransfer(const void * transmitBuf, void * receiveBuf, uint16_t length);
|
||||||
|
void dmaTransferSet(const void *transmitBuf, void *receiveBuf);
|
||||||
|
uint8_t dmaTransferRepeat(uint16_t length);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Sets up a DMA Transmit for SPI 8 or 16 bit transfer mode.
|
||||||
|
* The transfer mode (8 or 16 bit mode) is evaluated from the SPI peripheral setting.
|
||||||
|
*
|
||||||
|
* This function only transmits and does not care about the RX fifo.
|
||||||
|
*
|
||||||
|
* @param data buffer half words to transmit,
|
||||||
|
* @param length Number of bytes in buffer to transmit.
|
||||||
|
* @param minc Set to use Memory Increment mode, clear to use Circular mode.
|
||||||
|
*/
|
||||||
|
uint8_t dmaSend(const void * transmitBuf, uint16_t length, bool minc = 1);
|
||||||
|
void dmaSendSet(const void * transmitBuf, bool minc);
|
||||||
|
uint8_t dmaSendRepeat(uint16_t length);
|
||||||
|
|
||||||
|
uint8_t dmaSendAsync(const void * transmitBuf, uint16_t length, bool minc = 1);
|
||||||
|
/*
|
||||||
|
* Pin accessors
|
||||||
|
*/
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Return the number of the MISO (master in, slave out) pin
|
||||||
|
*/
|
||||||
|
uint8_t misoPin();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Return the number of the MOSI (master out, slave in) pin
|
||||||
|
*/
|
||||||
|
uint8_t mosiPin();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Return the number of the SCK (serial clock) pin
|
||||||
|
*/
|
||||||
|
uint8_t sckPin();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Return the number of the NSS (slave select) pin
|
||||||
|
*/
|
||||||
|
uint8_t nssPin();
|
||||||
|
|
||||||
|
/* Escape hatch */
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Get a pointer to the underlying libmaple spi_dev for
|
||||||
|
* this HardwareSPI instance.
|
||||||
|
*/
|
||||||
|
spi_dev* c_dev(void) { return _currentSetting->spi_d; }
|
||||||
|
|
||||||
|
spi_dev* dev() { return _currentSetting->spi_d; }
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Sets the number of the SPI peripheral to be used by
|
||||||
|
* this HardwareSPI instance.
|
||||||
|
*
|
||||||
|
* @param spi_num Number of the SPI port. 1-2 in low density devices
|
||||||
|
* or 1-3 in high density devices.
|
||||||
|
*/
|
||||||
|
void setModule(int spi_num) {
|
||||||
|
_currentSetting=&_settings[spi_num-1];// SPI channels are called 1 2 and 3 but the array is zero indexed
|
||||||
|
}
|
||||||
|
|
||||||
|
/* -- The following methods are deprecated --------------------------- */
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Deprecated.
|
||||||
|
*
|
||||||
|
* Use HardwareSPI::transfer() instead.
|
||||||
|
*
|
||||||
|
* @see HardwareSPI::transfer()
|
||||||
|
*/
|
||||||
|
uint8_t send(uint8_t data);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Deprecated.
|
||||||
|
*
|
||||||
|
* Use HardwareSPI::write() in combination with
|
||||||
|
* HardwareSPI::read() (or HardwareSPI::transfer()) instead.
|
||||||
|
*
|
||||||
|
* @see HardwareSPI::write()
|
||||||
|
* @see HardwareSPI::read()
|
||||||
|
* @see HardwareSPI::transfer()
|
||||||
|
*/
|
||||||
|
uint8_t send(uint8_t *data, uint32_t length);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Deprecated.
|
||||||
|
*
|
||||||
|
* Use HardwareSPI::read() instead.
|
||||||
|
*
|
||||||
|
* @see HardwareSPI::read()
|
||||||
|
*/
|
||||||
|
uint8_t recv();
|
||||||
|
|
||||||
|
private:
|
||||||
|
|
||||||
|
SPISettings _settings[BOARD_NR_SPI];
|
||||||
|
SPISettings *_currentSetting;
|
||||||
|
|
||||||
|
void updateSettings();
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Functions added for DMA transfers with Callback.
|
||||||
|
* Experimental.
|
||||||
|
*/
|
||||||
|
|
||||||
|
void EventCallback();
|
||||||
|
|
||||||
|
#if BOARD_NR_SPI >= 1
|
||||||
|
static void _spi1EventCallback();
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 2
|
||||||
|
static void _spi2EventCallback();
|
||||||
|
#endif
|
||||||
|
#if BOARD_NR_SPI >= 3
|
||||||
|
static void _spi3EventCallback();
|
||||||
|
#endif
|
||||||
|
/*
|
||||||
|
spi_dev *spi_d;
|
||||||
|
uint8_t _SSPin;
|
||||||
|
uint32_t clockDivider;
|
||||||
|
uint8_t dataMode;
|
||||||
|
BitOrder bitOrder;
|
||||||
|
*/
|
||||||
|
};
|
||||||
|
|
||||||
|
extern SPIClass SPI;
|
||||||
|
|
@ -265,7 +265,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
-DDEBUG_LEVEL=0
|
-DDEBUG_LEVEL=0
|
||||||
build_unflags = -std=gnu++11
|
build_unflags = -std=gnu++11
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
lib_ignore = U8glib-HAL, Adafruit NeoPixel
|
lib_ignore = U8glib-HAL, Adafruit NeoPixel, SPI
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
monitor_speed = 250000
|
monitor_speed = 250000
|
||||||
|
|
||||||
|
|
@ -285,7 +285,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
build_unflags = -std=gnu++11
|
build_unflags = -std=gnu++11
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
SoftwareSerialM=https://github.com/FYSETC/SoftwareSerialM/archive/master.zip
|
SoftwareSerialM=https://github.com/FYSETC/SoftwareSerialM/archive/master.zip
|
||||||
lib_ignore = Adafruit NeoPixel
|
lib_ignore = Adafruit NeoPixel, SPI
|
||||||
lib_ldf_mode = chain
|
lib_ldf_mode = chain
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
monitor_speed = 250000
|
monitor_speed = 250000
|
||||||
|
|
@ -306,7 +306,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
-DDEBUG_LEVEL=0
|
-DDEBUG_LEVEL=0
|
||||||
build_unflags = -std=gnu++11
|
build_unflags = -std=gnu++11
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
lib_ignore = Adafruit NeoPixel
|
lib_ignore = Adafruit NeoPixel, SPI
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
monitor_speed = 115200
|
monitor_speed = 115200
|
||||||
upload_protocol = stlink
|
upload_protocol = stlink
|
||||||
|
|
@ -366,7 +366,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
build_unflags = -std=gnu++11 -DCONFIG_MAPLE_MINI_NO_DISABLE_DEBUG=1
|
build_unflags = -std=gnu++11 -DCONFIG_MAPLE_MINI_NO_DISABLE_DEBUG=1
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
lib_ignore = Adafruit NeoPixel
|
lib_ignore = Adafruit NeoPixel, SPI
|
||||||
|
|
||||||
#
|
#
|
||||||
# MKS Robin (STM32F103ZET6)
|
# MKS Robin (STM32F103ZET6)
|
||||||
|
|
@ -381,7 +381,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
build_unflags = -std=gnu++11
|
build_unflags = -std=gnu++11
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
lib_ignore = Adafruit NeoPixel
|
lib_ignore = Adafruit NeoPixel, SPI
|
||||||
|
|
||||||
#
|
#
|
||||||
# MKS ROBIN LITE/LITE2 (STM32F103RCT6)
|
# MKS ROBIN LITE/LITE2 (STM32F103RCT6)
|
||||||
|
|
@ -396,7 +396,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
build_unflags = -std=gnu++11
|
build_unflags = -std=gnu++11
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
lib_ignore = Adafruit NeoPixel
|
lib_ignore = Adafruit NeoPixel, SPI
|
||||||
|
|
||||||
#
|
#
|
||||||
# MKS Robin Mini (STM32F103VET6)
|
# MKS Robin Mini (STM32F103VET6)
|
||||||
|
|
@ -411,7 +411,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
build_unflags = -std=gnu++11
|
build_unflags = -std=gnu++11
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
lib_ignore = Adafruit NeoPixel
|
lib_ignore = Adafruit NeoPixel, SPI
|
||||||
|
|
||||||
#
|
#
|
||||||
# MKS Robin Nano (STM32F103VET6)
|
# MKS Robin Nano (STM32F103VET6)
|
||||||
|
|
@ -426,7 +426,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
build_unflags = -std=gnu++11
|
build_unflags = -std=gnu++11
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
lib_ignore = Adafruit NeoPixel
|
lib_ignore = Adafruit NeoPixel, SPI
|
||||||
|
|
||||||
#
|
#
|
||||||
# JGAurora A5S A1 (STM32F103ZET6)
|
# JGAurora A5S A1 (STM32F103ZET6)
|
||||||
|
|
@ -441,7 +441,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py
|
||||||
build_unflags = -std=gnu++11
|
build_unflags = -std=gnu++11
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
lib_deps = ${common.lib_deps}
|
lib_deps = ${common.lib_deps}
|
||||||
lib_ignore = Adafruit NeoPixel
|
lib_ignore = Adafruit NeoPixel, SPI
|
||||||
monitor_speed = 250000
|
monitor_speed = 250000
|
||||||
|
|
||||||
#
|
#
|
||||||
|
|
@ -536,7 +536,7 @@ build_flags = !python Marlin/src/HAL/HAL_STM32F1/STM32F1_flag_script.py -DMCU_ST
|
||||||
-DDEBUG_LEVEL=0
|
-DDEBUG_LEVEL=0
|
||||||
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
src_filter = ${common.default_src_filter} +<src/HAL/HAL_STM32F1>
|
||||||
#-<frameworks>
|
#-<frameworks>
|
||||||
lib_ignore = Adafruit NeoPixel, LiquidCrystal, LiquidTWI2, TMCStepper, U8glib-HAL
|
lib_ignore = Adafruit NeoPixel, LiquidCrystal, LiquidTWI2, TMCStepper, U8glib-HAL, SPI
|
||||||
|
|
||||||
#
|
#
|
||||||
# Espressif ESP32
|
# Espressif ESP32
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue