92 lines
3.9 KiB
C
92 lines
3.9 KiB
C
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2017 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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/**
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* Support routines for Re-ARM board
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*/
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typedef struct {
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int8_t pin;
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bool output;
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bool analog;
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uint8_t resistors;
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bool open_drain;
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char function_string[15];
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} pin_info;
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pin_info pin_Re_ARM;
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void get_pin_info(int8_t pin) {
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pin_Re_ARM.analog = 0;
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pin_Re_ARM.pin = pin;
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int8_t pin_port = pin_map[pin].port;
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int8_t pin_port_pin = pin_map[pin].pin;
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// active ADC function/mode/code values for PINSEL registers
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int8_t ADC_pin_mode = pin_port == 0 && pin_port_pin == 2 ? 2 :
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pin_port == 0 && pin_port_pin == 3 ? 2 :
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pin_port == 0 && pin_port_pin == 23 ? 1 :
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pin_port == 0 && pin_port_pin == 24 ? 1 :
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pin_port == 0 && pin_port_pin == 25 ? 1 :
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pin_port == 0 && pin_port_pin == 26 ? 1 :
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pin_port == 1 && pin_port_pin == 30 ? 3 :
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pin_port == 1 && pin_port_pin == 31 ? 3 : -1;
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//get appropriate PINSEL register
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volatile uint32_t * pinsel_reg = (pin_port == 0 && pin_port_pin <= 15) ? &LPC_PINCON->PINSEL0 :
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(pin_port == 0) ? &LPC_PINCON->PINSEL1 :
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(pin_port == 1 && pin_port_pin <= 15) ? &LPC_PINCON->PINSEL2 :
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pin_port == 1 ? &LPC_PINCON->PINSEL3 :
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pin_port == 2 ? &LPC_PINCON->PINSEL4 :
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pin_port == 3 ? &LPC_PINCON->PINSEL7 : &LPC_PINCON->PINSEL9;
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uint8_t pinsel_start_bit = pin_port_pin > 15 ? 2 * (pin_port_pin - 16) : 2 * pin_port_pin;
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uint8_t pin_mode = (uint8_t) ((*pinsel_reg >> pinsel_start_bit) & 0x3);
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uint32_t * FIO_reg[5] PROGMEM = {(uint32_t*) 0x2009C000,(uint32_t*) 0x2009C020,(uint32_t*) 0x2009C040,(uint32_t*) 0x2009C060,(uint32_t*) 0x2009C080};
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pin_Re_ARM.output = (*FIO_reg[pin_map[pin].port] >> pin_map[pin].pin) & 1; //input/output state except if active ADC
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if (pin_mode) { // if function/mode/code value not 0 then could be an active analog channel
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if (ADC_pin_mode == pin_mode) { // found an active analog pin
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pin_Re_ARM.output = 0;
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pin_Re_ARM.analog = 1;
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}
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}
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}
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/**
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* translation of routines & variables used by pinsDebug.h
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*/
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#define GET_PIN_INFO(pin) get_pin_info(pin)
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#define IS_ANALOG(P) (DIGITAL_PIN_TO_ANALOG_PIN(P) >= 0 ? 1 : 0)
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#define GET_PINMODE(pin) pin_Re_ARM.output
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#define digitalRead_mod(p) digitalRead(p)
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#define digitalPinToPort_DEBUG(p) 0
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#define digitalPinToBitMask_DEBUG(pin) 0
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#define PRINT_PORT(p) SERIAL_ECHO_SP(10);
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#define GET_ARRAY_PIN(p) pin_array[p].pin
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#define NAME_FORMAT(p) PSTR("%-##p##s")
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// #define PRINT_ARRAY_NAME(x) do {sprintf_P(buffer, NAME_FORMAT(MAX_NAME_LENGTH) , pin_array[x].name); SERIAL_ECHO(buffer);} while (0)
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#define PRINT_ARRAY_NAME(x) do {sprintf_P(buffer, PSTR("%-35s") , pin_array[x].name); SERIAL_ECHO(buffer);} while (0)
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#define GET_ARRAY_IS_DIGITAL(x) !pin_Re_ARM.analog
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