76811d3c66
* Add support for the extra 16 GPIO pins in the menus and core.
* Clean up Generic RP2350 PSRAM ("none" is valid) and flash (other than 16MB) options.
* Add extra GPIO<->peripheral connections
* Add Pimoroni PGA2350 RP2350B-based board
* Pins 32-47 can be used for PIOPrograms
* Avoid hang when PSRAM fails to initialize
* Move libpico to an RP2350B board for SDK (otherwise the SDK drops all GPIOHI support)
118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
/*
|
|
pinMode and digitalRead/Write for the Raspberry Pi Pico RP2040
|
|
|
|
Copyright (c) 2021 Earle F. Philhower, III <earlephilhower@yahoo.com>
|
|
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "Arduino.h"
|
|
#include <hardware/gpio.h>
|
|
|
|
extern void __clearADCPin(pin_size_t p);
|
|
|
|
static PinMode _pm[__GPIOCNT];
|
|
|
|
extern "C" void pinMode(pin_size_t ulPin, PinMode ulMode) __attribute__((weak, alias("__pinMode")));
|
|
extern "C" void __pinMode(pin_size_t ulPin, PinMode ulMode) {
|
|
if (ulPin >= __GPIOCNT) {
|
|
DEBUGCORE("ERROR: Illegal pin in pinMode (%d)\n", ulPin);
|
|
return;
|
|
}
|
|
|
|
switch (ulMode) {
|
|
case INPUT:
|
|
gpio_init(ulPin);
|
|
gpio_set_dir(ulPin, false);
|
|
gpio_disable_pulls(ulPin);
|
|
break;
|
|
case INPUT_PULLUP:
|
|
gpio_init(ulPin);
|
|
gpio_set_dir(ulPin, false);
|
|
gpio_pull_up(ulPin);
|
|
gpio_put(ulPin, 0);
|
|
break;
|
|
case INPUT_PULLDOWN:
|
|
gpio_init(ulPin);
|
|
gpio_set_dir(ulPin, false);
|
|
gpio_pull_down(ulPin);
|
|
gpio_put(ulPin, 1);
|
|
break;
|
|
case OUTPUT:
|
|
case OUTPUT_4MA:
|
|
gpio_init(ulPin);
|
|
gpio_set_drive_strength(ulPin, GPIO_DRIVE_STRENGTH_4MA);
|
|
gpio_set_dir(ulPin, true);
|
|
break;
|
|
case OUTPUT_2MA:
|
|
gpio_init(ulPin);
|
|
gpio_set_drive_strength(ulPin, GPIO_DRIVE_STRENGTH_2MA);
|
|
gpio_set_dir(ulPin, true);
|
|
break;
|
|
case OUTPUT_8MA:
|
|
gpio_init(ulPin);
|
|
gpio_set_drive_strength(ulPin, GPIO_DRIVE_STRENGTH_8MA);
|
|
gpio_set_dir(ulPin, true);
|
|
break;
|
|
case OUTPUT_12MA:
|
|
gpio_init(ulPin);
|
|
gpio_set_drive_strength(ulPin, GPIO_DRIVE_STRENGTH_12MA);
|
|
gpio_set_dir(ulPin, true);
|
|
break;
|
|
default:
|
|
DEBUGCORE("ERROR: Illegal pinMode mode (%d)\n", ulMode);
|
|
// Error
|
|
return;
|
|
}
|
|
|
|
_pm[ulPin] = ulMode;
|
|
|
|
if (ulPin >= __FIRSTANALOGGPIO) {
|
|
__clearADCPin(ulPin);
|
|
}
|
|
}
|
|
|
|
extern "C" void digitalWrite(pin_size_t ulPin, PinStatus ulVal) __attribute__((weak, alias("__digitalWrite")));
|
|
extern "C" void __digitalWrite(pin_size_t ulPin, PinStatus ulVal) {
|
|
if (ulPin >= __GPIOCNT) {
|
|
DEBUGCORE("ERROR: Illegal pin in pinMode (%d)\n", ulPin);
|
|
return;
|
|
}
|
|
gpio_set_function(ulPin, GPIO_FUNC_SIO);
|
|
if (_pm[ulPin] == INPUT_PULLDOWN) {
|
|
if (ulVal == LOW) {
|
|
gpio_set_dir(ulPin, false);
|
|
} else {
|
|
gpio_set_dir(ulPin, true);
|
|
}
|
|
} else if (_pm[ulPin] == INPUT_PULLUP) {
|
|
if (ulVal == HIGH) {
|
|
gpio_set_dir(ulPin, false);
|
|
} else {
|
|
gpio_set_dir(ulPin, true);
|
|
}
|
|
} else {
|
|
gpio_put(ulPin, ulVal == LOW ? 0 : 1);
|
|
}
|
|
}
|
|
|
|
extern "C" PinStatus digitalRead(pin_size_t ulPin) __attribute__((weak, alias("__digitalRead")));
|
|
extern "C" PinStatus __digitalRead(pin_size_t ulPin) {
|
|
if (ulPin >= __GPIOCNT) {
|
|
DEBUGCORE("ERROR: Illegal pin in digitalRead (%d)\n", ulPin);
|
|
return LOW;
|
|
}
|
|
return gpio_get(ulPin) ? HIGH : LOW;
|
|
}
|