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io_pin_remap.h
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#ifndef __IO_PIN_REMAP_H__
#define __IO_PIN_REMAP_H__
#include "Arduino.h"
#if defined(BOARD_HAS_PIN_REMAP) && !defined(BOARD_USES_HW_GPIO_NUMBERS)
// Pin remapping functions
int8_t digitalPinToGPIONumber(int8_t digitalPin);
int8_t gpioNumberToDigitalPin(int8_t gpioNumber);
// Apply pin remapping to API only when building libraries and user sketch
#ifndef ARDUINO_CORE_BUILD
// Override APIs requiring pin remapping
// cores/esp32/Arduino.h
#define pulseInLong(pin, args...) pulseInLong(digitalPinToGPIONumber(pin), args)
#define pulseIn(pin, args...) pulseIn(digitalPinToGPIONumber(pin), args)
#define noTone(_pin) noTone(digitalPinToGPIONumber(_pin))
#define tone(_pin, args...) tone(digitalPinToGPIONumber(_pin), args)
// cores/esp32/esp32-hal.h
#define analogGetChannel(pin) analogGetChannel(digitalPinToGPIONumber(pin))
#define analogWrite(pin, value) analogWrite(digitalPinToGPIONumber(pin), value)
#define analogWriteFrequency(pin, freq) analogWriteFrequency(digitalPinToGPIONumber(pin), freq)
#define analogWriteResolution(pin, bits) analogWriteResolution(digitalPinToGPIONumber(pin), bits)
// cores/esp32/esp32-hal-adc.h
#define analogRead(pin) analogRead(digitalPinToGPIONumber(pin))
#define analogReadMilliVolts(pin) analogReadMilliVolts(digitalPinToGPIONumber(pin))
#define analogSetPinAttenuation(pin, attenuation) analogSetPinAttenuation(digitalPinToGPIONumber(pin), attenuation)
// cores/esp32/esp32-hal-dac.h
#define dacDisable(pin) dacDisable(digitalPinToGPIONumber(pin))
#define dacWrite(pin, value) dacWrite(digitalPinToGPIONumber(pin), value)
// cores/esp32/esp32-hal-gpio.h
#define analogChannelToDigitalPin(channel) gpioNumberToDigitalPin(analogChannelToDigitalPin(channel))
#define digitalPinToAnalogChannel(pin) digitalPinToAnalogChannel(digitalPinToGPIONumber(pin))
#define digitalPinToTouchChannel(pin) digitalPinToTouchChannel(digitalPinToGPIONumber(pin))
#define digitalRead(pin) digitalRead(digitalPinToGPIONumber(pin))
#define attachInterruptArg(pin, fcn, arg, mode) attachInterruptArg(digitalPinToGPIONumber(pin), fcn, arg, mode)
#define attachInterrupt(pin, fcn, mode) attachInterrupt(digitalPinToGPIONumber(pin), fcn, mode)
#define detachInterrupt(pin) detachInterrupt(digitalPinToGPIONumber(pin))
#define digitalWrite(pin, val) digitalWrite(digitalPinToGPIONumber(pin), val)
#define pinMode(pin, mode) pinMode(digitalPinToGPIONumber(pin), mode)
// cores/esp32/esp32-hal-i2c.h
#define i2cInit(i2c_num, sda, scl, clk_speed) i2cInit(i2c_num, digitalPinToGPIONumber(sda), digitalPinToGPIONumber(scl), clk_speed)
// cores/esp32/esp32-hal-i2c-slave.h
#define i2cSlaveInit(num, sda, scl, slaveID, frequency, rx_len, tx_len) i2cSlaveInit(num, digitalPinToGPIONumber(sda), digitalPinToGPIONumber(scl), slaveID, frequency, rx_len, tx_len)
// cores/esp32/esp32-hal-ledc.h
#define ledcAttach(pin, freq, resolution) ledcAttach(digitalPinToGPIONumber(pin), freq, resolution)
#define ledcAttachChannel(pin, freq, resolution, channel) ledcAttachChannel(digitalPinToGPIONumber(pin), freq, resolution, channel)
#define ledcWrite(pin, duty) ledcWrite(digitalPinToGPIONumber(pin), duty)
#define ledcWriteTone(pin, freq) ledcWriteTone(digitalPinToGPIONumber(pin), freq)
#define ledcWriteNote(pin, note, octave) ledcWriteNote(digitalPinToGPIONumber(pin), note, octave)
#define ledcRead(pin) ledcRead(digitalPinToGPIONumber(pin))
#define ledcReadFreq(pin) ledcReadFreq(digitalPinToGPIONumber(pin))
#define ledcDetach(pin) ledcDetach(digitalPinToGPIONumber(pin))
#define ledcChangeFrequency(pin, freq, resolution) ledcChangeFrequency(digitalPinToGPIONumber(pin), freq, resolution)
#define ledcOutputInvert(pin, out_invert) ledcOutputInvert(digitalPinToGPIONumber(pin), out_invert)
#define ledcFade(pin, start_duty, target_duty, max_fade_time_ms) ledcFade(digitalPinToGPIONumber(pin), start_duty, target_duty, max_fade_time_ms)
#define ledcFadeWithInterrupt(pin, start_duty, target_duty, max_fade_time_ms, userFunc) ledcFadeWithInterrupt(digitalPinToGPIONumber(pin), start_duty, target_duty, max_fade_time_ms, userFunc)
#define ledcFadeWithInterruptArg(pin, start_duty, target_duty, max_fade_time_ms, userFunc, arg) ledcFadeWithInterruptArg(digitalPinToGPIONumber(pin), start_duty, target_duty, max_fade_time_ms, userFunc, arg)
// cores/esp32/esp32-hal-matrix.h
#define pinMatrixInAttach(pin, signal, inverted) pinMatrixInAttach(digitalPinToGPIONumber(pin), signal, inverted)
#define pinMatrixOutAttach(pin, function, invertOut, invertEnable) pinMatrixOutAttach(digitalPinToGPIONumber(pin), function, invertOut, invertEnable)
#define pinMatrixOutDetach(pin, invertOut, invertEnable) pinMatrixOutDetach(digitalPinToGPIONumber(pin), invertOut, invertEnable)
// cores/esp32/esp32-hal-rgb-led.h
#define neopixelWrite(pin, red_val, green_val, blue_val) neopixelWrite(digitalPinToGPIONumber(pin), red_val, green_val, blue_val)
// cores/esp32/esp32-hal-rmt.h
#define rmtInit(pin, channel_direction, memsize, frequency_Hz) rmtInit(digitalPinToGPIONumber(pin), channel_direction, memsize, frequency_Hz)
#define rmtSetEOT(pin, EOT_Level) rmtSetEOT(digitalPinToGPIONumber(pin), EOT_Level)
#define rmtWrite(pin, data, num_rmt_symbols, timeout_ms) rmtWrite(digitalPinToGPIONumber(pin), data, num_rmt_symbols, timeout_ms)
#define rmtWriteAsync(pin, data, num_rmt_symbols) rmtWriteAsync(digitalPinToGPIONumber(pin), data, num_rmt_symbols)
#define rmtWriteLooping(pin, data, num_rmt_symbols) rmtWriteLooping(digitalPinToGPIONumber(pin), data, num_rmt_symbols)
#define rmtTransmitCompleted(pin) rmtTransmitCompleted(digitalPinToGPIONumber(pin))
#define rmtRead(pin, data, num_rmt_symbols, timeout_ms) rmtRead(digitalPinToGPIONumber(pin), data, num_rmt_symbols, timeout_ms)
#define rmtReadAsync(pin, data, num_rmt_symbols) rmtReadAsync(digitalPinToGPIONumber(pin), data, num_rmt_symbols)
#define rmtReceiveCompleted(pin) rmtReceiveCompleted(digitalPinToGPIONumber(pin))
#define rmtSetRxMaxThreshold(pin, idle_thres_ticks) rmtSetRxMaxThreshold(digitalPinToGPIONumber(pin), idle_thres_ticks)
#define rmtSetCarrier(pin, carrier_en, carrier_level, frequency_Hz, duty_percent) rmtSetCarrier(digitalPinToGPIONumber(pin), carrier_en, carrier_level, frequency_Hz, duty_percent)
#define rmtSetRxMinThreshold(pin, filter_pulse_ticks) rmtSetRxMinThreshold(digitalPinToGPIONumber(pin), filter_pulse_ticks)
#define rmtDeinit(pin) rmtDeinit(digitalPinToGPIONumber(pin))
// cores/esp32/esp32-hal-sigmadelta.h
#define sigmaDeltaAttach(pin, freq) sigmaDeltaAttach(digitalPinToGPIONumber(pin), freq)
#define sigmaDeltaWrite(pin, duty) sigmaDeltaWrite(digitalPinToGPIONumber(pin), duty)
#define sigmaDeltaDetach(pin) sigmaDeltaDetach(digitalPinToGPIONumber(pin))
// cores/esp32/esp32-hal-spi.h
#define spiAttachSCK(spi, sck) spiAttachSCK(spi, digitalPinToGPIONumber(sck))
#define spiAttachMISO(spi, miso) spiAttachMISO(spi, digitalPinToGPIONumber(miso))
#define spiAttachMOSI(spi, mosi) spiAttachMOSI(spi, digitalPinToGPIONumber(mosi))
#define spiDetachSCK(spi, sck) spiDetachSCK(spi, digitalPinToGPIONumber(sck))
#define spiDetachMISO(spi, miso) spiDetachMISO(spi, digitalPinToGPIONumber(miso))
#define spiDetachMOSI(spi, mosi) spiDetachMOSI(spi, digitalPinToGPIONumber(mosi))
#define spiAttachSS(spi, cs_num, ss) spiAttachSS(spi, cs_num, digitalPinToGPIONumber(ss))
#define spiDetachSS(spi, ss) spiDetachSS(spi, digitalPinToGPIONumber(ss))
// cores/esp32/esp32-hal-touch.h
#define touchInterruptGetLastStatus(pin) touchInterruptGetLastStatus(digitalPinToGPIONumber(pin))
#define touchRead(pin) touchRead(digitalPinToGPIONumber(pin))
#define touchAttachInterruptArg(pin, userFunc, arg, threshold) touchAttachInterruptArg(digitalPinToGPIONumber(pin), userFunc, arg, threshold)
#define touchAttachInterrupt(pin, userFunc, threshold) touchAttachInterrupt(digitalPinToGPIONumber(pin), userFunc, threshold)
#define touchDetachInterrupt(pin) touchDetachInterrupt(digitalPinToGPIONumber(pin))
#define touchSleepWakeUpEnable(pin, threshold) touchSleepWakeUpEnable(digitalPinToGPIONumber(pin), threshold)
// cores/esp32/esp32-hal-uart.h
#define uartBegin(uart_nr, baudrate, config, rxPin, txPin, rx_buffer_size, tx_buffer_size, inverted, rxfifo_full_thrhd) \
uartBegin(uart_nr, baudrate, config, digitalPinToGPIONumber(rxPin), digitalPinToGPIONumber(txPin), rx_buffer_size, tx_buffer_size, inverted, rxfifo_full_thrhd)
#define uartSetPins(uart, rxPin, txPin, ctsPin, rtsPin) \
uartSetPins(uart, digitalPinToGPIONumber(rxPin), digitalPinToGPIONumber(txPin), digitalPinToGPIONumber(ctsPin), digitalPinToGPIONumber(rtsPin))
#define uartDetachPins(uart, rxPin, txPin, ctsPin, rtsPin) \
uartDetachPins(uart, digitalPinToGPIONumber(rxPin), digitalPinToGPIONumber(txPin), digitalPinToGPIONumber(ctsPin), digitalPinToGPIONumber(rtsPin))
#endif // ARDUINO_CORE_BUILD
#else
// pin remapping disabled: use stubs
#define digitalPinToGPIONumber(digitalPin) (digitalPin)
#define gpioNumberToDigitalPin(gpioNumber) (gpioNumber)
#endif
#endif /* __GPIO_PIN_REMAP_H__ */