89 lines
4.1 KiB
C++
89 lines
4.1 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2019 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 LPC1768
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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 NUMBER_PINS_TOTAL NUM_DIGITAL_PINS
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#define pwm_details(pin) pin = pin // do nothing // print PWM details
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#define pwm_status(pin) false //Print a pin's PWM status. Return true if it's currently a PWM pin.
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#define IS_ANALOG(P) (DIGITAL_PIN_TO_ANALOG_PIN(P) >= 0 ? 1 : 0)
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#define digitalRead_mod(p) extDigitalRead(p)
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#define PRINT_PORT(p)
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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, PSTR("%-" STRINGIFY(MAX_NAME_LENGTH) "s"), pin_array[x].name); SERIAL_ECHO(buffer);} while (0)
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#define PRINT_PIN(p) do {sprintf_P(buffer, PSTR("%d.%02d"), LPC1768_PIN_PORT(p), LPC1768_PIN_PIN(p)); SERIAL_ECHO(buffer);} while (0)
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#define MULTI_NAME_PAD 16 // space needed to be pretty if not first name assigned to a pin
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// pins that will cause hang/reset/disconnect in M43 Toggle and Watch utilities
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// uses pin index
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#ifndef M43_NEVER_TOUCH
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#define M43_NEVER_TOUCH(Q) ((Q) == 29 || (Q) == 30 || (Q) == 73) // USB pins
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#endif
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// active ADC function/mode/code values for PINSEL registers
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constexpr int8_t ADC_pin_mode(pin_t pin) {
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return (LPC1768_PIN_PORT(pin) == 0 && LPC1768_PIN_PIN(pin) == 2 ? 2 :
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LPC1768_PIN_PORT(pin) == 0 && LPC1768_PIN_PIN(pin) == 3 ? 2 :
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LPC1768_PIN_PORT(pin) == 0 && LPC1768_PIN_PIN(pin) == 23 ? 1 :
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LPC1768_PIN_PORT(pin) == 0 && LPC1768_PIN_PIN(pin) == 24 ? 1 :
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LPC1768_PIN_PORT(pin) == 0 && LPC1768_PIN_PIN(pin) == 25 ? 1 :
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LPC1768_PIN_PORT(pin) == 0 && LPC1768_PIN_PIN(pin) == 26 ? 1 :
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LPC1768_PIN_PORT(pin) == 1 && LPC1768_PIN_PIN(pin) == 30 ? 3 :
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LPC1768_PIN_PORT(pin) == 1 && LPC1768_PIN_PIN(pin) == 31 ? 3 : -1);
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}
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int8_t get_pin_mode(pin_t pin) {
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if (!VALID_PIN(pin)) return -1;
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uint8_t pin_port = LPC1768_PIN_PORT(pin);
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uint8_t pin_port_pin = LPC1768_PIN_PIN(pin);
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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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int8_t pin_mode = (int8_t) ((*pinsel_reg >> pinsel_start_bit) & 0x3);
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return pin_mode;
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}
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bool GET_PINMODE(pin_t pin) {
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int8_t pin_mode = get_pin_mode(pin);
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if (pin_mode == -1 || pin_mode == ADC_pin_mode(pin)) // found an invalid pin or active analog pin
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return false;
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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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return ((*FIO_reg[LPC1768_PIN_PORT(pin)] >> LPC1768_PIN_PIN(pin) & 1) != 0); //input/output state
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}
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bool GET_ARRAY_IS_DIGITAL(pin_t pin) {
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return (!IS_ANALOG(pin) || get_pin_mode(pin) != ADC_pin_mode(pin));
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}
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