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LPC176x: Expand HW SPI class

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This commit is contained in:
teemuatlut 2018-04-06 23:24:18 +03:00
parent 3b5dec4b13
commit f38c81cdde
4 changed files with 25 additions and 7 deletions
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17
Marlin/src/HAL/HAL_LPC1768/HAL_spi.cpp
View file

@ -150,7 +150,7 @@
} }
void spiInit(uint8_t spiRate) { void spiInit(uint8_t spiRate) {
SSP_Cmd(LPC_SSP0, DISABLE); // Disable SSP0 before changing rate
// table to convert Marlin spiRates (0-5 plus default) into bit rates // table to convert Marlin spiRates (0-5 plus default) into bit rates
uint32_t Marlin_speed[7]; // CPSR is always 2 uint32_t Marlin_speed[7]; // CPSR is always 2
Marlin_speed[0] = 8333333; //(SCR: 2) desired: 8,000,000 actual: 8,333,333 +4.2% SPI_FULL_SPEED Marlin_speed[0] = 8333333; //(SCR: 2) desired: 8,000,000 actual: 8,333,333 +4.2% SPI_FULL_SPEED
@ -242,6 +242,21 @@
void SPIClass::begin() { spiBegin(); } void SPIClass::begin() { spiBegin(); }
void SPIClass::beginTransaction(SPISettings cfg) {
uint8_t spiRate;
switch(cfg.spiRate()) {
case 8000000: spiRate=0 ;break;
case 4000000: spiRate=1 ;break;
case 2000000: spiRate=2 ;break;
case 1000000: spiRate=3 ;break;
case 500000: spiRate=4 ;break;
case 250000: spiRate=5 ;break;
case 125000: spiRate=6 ;break;
default: spiRate=2; break;
}
spiInit(spiRate);
}
uint8_t SPIClass::transfer(uint8_t B) { uint8_t SPIClass::transfer(uint8_t B) {
return spiTransfer(B); return spiTransfer(B);
} }

4
Marlin/src/HAL/HAL_LPC1768/include/HardwareSerial.h
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@ -23,9 +23,9 @@
#ifndef HARDWARE_SERIAL_H_ #ifndef HARDWARE_SERIAL_H_
#define HARDWARE_SERIAL_H_ #define HARDWARE_SERIAL_H_
#include "../../inc/MarlinConfigPre.h" #include "../../../inc/MarlinConfigPre.h"
#if ENABLED(EMERGENCY_PARSER) #if ENABLED(EMERGENCY_PARSER)
#include "../../feature/emergency_parser.h" #include "../../../feature/emergency_parser.h"
#endif #endif
#include <stdarg.h> #include <stdarg.h>

7
Marlin/src/HAL/HAL_LPC1768/include/SPI.h
View file

@ -31,13 +31,16 @@
class SPISettings { class SPISettings {
public: public:
SPISettings(int a, int b, int c) {}; SPISettings(uint32_t speed, int, int) : spi_speed(speed) {};
uint32_t spiRate() { return spi_speed; }
private:
uint32_t spi_speed;
}; };
class SPIClass { class SPIClass {
public: public:
void begin(); void begin();
void beginTransaction(SPISettings foo) {}; void beginTransaction(SPISettings);
void endTransaction() {}; void endTransaction() {};
uint8_t transfer(uint8_t data); uint8_t transfer(uint8_t data);
uint16_t transfer16(uint16_t data); uint16_t transfer16(uint16_t data);

4
Marlin/src/HAL/HAL_LPC1768/include/SoftwareSerial.cpp
View file

@ -36,8 +36,8 @@
// Includes // Includes
// //
//#include <WInterrupts.h> //#include <WInterrupts.h>
#include "../../inc/MarlinConfig.h" #include "../../../inc/MarlinConfig.h"
#include "../Delay.h" #include "../../Delay.h"
#include <stdint.h> #include <stdint.h>
#include <stdarg.h> #include <stdarg.h>
#include <Arduino.h> #include <Arduino.h>