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circuitpython/ports/stm32f4/common-hal/digitalio/DigitalInOut.c

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5.9 KiB

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
* Copyright (c) 2019 Lucian Copeland for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "shared-bindings/digitalio/DigitalInOut.h"
#include "py/runtime.h"
#include "supervisor/shared/translate.h"
#include "stm32f4xx_hal.h"
#include "stm32f4xx_ll_gpio.h"
void common_hal_digitalio_digitalinout_never_reset(
digitalio_digitalinout_obj_t *self) {
never_reset_pin_number(self->pin->port, self->pin->number);
}
digitalinout_result_t common_hal_digitalio_digitalinout_construct(
digitalio_digitalinout_obj_t *self, const mcu_pin_obj_t *pin) {
claim_pin(pin);
self->pin = pin;
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = pin_mask(self->pin->number);
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(pin_port(self->pin->port), &GPIO_InitStruct);
return DIGITALINOUT_OK;
}
bool common_hal_digitalio_digitalinout_deinited(digitalio_digitalinout_obj_t *self) {
return self->pin == NULL;
}
void common_hal_digitalio_digitalinout_deinit(digitalio_digitalinout_obj_t *self) {
if (common_hal_digitalio_digitalinout_deinited(self)) {
return;
}
reset_pin_number(self->pin->port, self->pin->number);
self->pin = NULL;
}
void common_hal_digitalio_digitalinout_switch_to_input(
digitalio_digitalinout_obj_t *self, digitalio_pull_t pull) {
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = pin_mask(self->pin->number);
GPIO_InitStruct.Mode = GPIO_MODE_INPUT;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(pin_port(self->pin->port), &GPIO_InitStruct);
common_hal_digitalio_digitalinout_set_pull(self, pull);
}
void common_hal_digitalio_digitalinout_switch_to_output(
digitalio_digitalinout_obj_t *self, bool value,
digitalio_drive_mode_t drive_mode) {
common_hal_digitalio_digitalinout_set_drive_mode(self, drive_mode);
common_hal_digitalio_digitalinout_set_value(self, value);
}
digitalio_direction_t common_hal_digitalio_digitalinout_get_direction(
digitalio_digitalinout_obj_t *self) {
return (LL_GPIO_GetPinMode(pin_port(self->pin->port), pin_mask(self->pin->number))
== LL_GPIO_MODE_INPUT) ? DIRECTION_INPUT : DIRECTION_OUTPUT;
}
void common_hal_digitalio_digitalinout_set_value(
digitalio_digitalinout_obj_t *self, bool value) {
HAL_GPIO_WritePin(pin_port(self->pin->port), pin_mask(self->pin->number), value);
}
bool common_hal_digitalio_digitalinout_get_value(
digitalio_digitalinout_obj_t *self) {
return (LL_GPIO_GetPinMode(pin_port(self->pin->port), pin_mask(self->pin->number)) == LL_GPIO_MODE_INPUT)
? HAL_GPIO_ReadPin(pin_port(self->pin->port), pin_mask(self->pin->number))
: LL_GPIO_IsOutputPinSet(pin_port(self->pin->port), pin_mask(self->pin->number));
}
void common_hal_digitalio_digitalinout_set_drive_mode(
digitalio_digitalinout_obj_t *self,
digitalio_drive_mode_t drive_mode) {
GPIO_InitTypeDef GPIO_InitStruct = {0};
GPIO_InitStruct.Pin = pin_mask(self->pin->number);
GPIO_InitStruct.Mode = (drive_mode == DRIVE_MODE_OPEN_DRAIN ?
GPIO_MODE_OUTPUT_OD : GPIO_MODE_OUTPUT_PP);
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
HAL_GPIO_Init(pin_port(self->pin->port), &GPIO_InitStruct);
}
digitalio_drive_mode_t common_hal_digitalio_digitalinout_get_drive_mode(
digitalio_digitalinout_obj_t *self) {
return LL_GPIO_GetPinOutputType(pin_port(self->pin->port), pin_mask(self->pin->number))
== LL_GPIO_OUTPUT_OPENDRAIN ? DRIVE_MODE_OPEN_DRAIN : DRIVE_MODE_PUSH_PULL;
}
void common_hal_digitalio_digitalinout_set_pull(
digitalio_digitalinout_obj_t *self, digitalio_pull_t pull) {
switch (pull) {
case PULL_UP:
LL_GPIO_SetPinPull(pin_port(self->pin->port), pin_mask(self->pin->number),LL_GPIO_PULL_UP);
break;
case PULL_DOWN:
LL_GPIO_SetPinPull(pin_port(self->pin->port), pin_mask(self->pin->number),LL_GPIO_PULL_DOWN);
break;
case PULL_NONE:
LL_GPIO_SetPinPull(pin_port(self->pin->port), pin_mask(self->pin->number),LL_GPIO_PULL_NO);
break;
default:
break;
}
}
digitalio_pull_t common_hal_digitalio_digitalinout_get_pull(
digitalio_digitalinout_obj_t *self) {
switch (LL_GPIO_GetPinPull(pin_port(self->pin->port), pin_mask(self->pin->number))) {
case LL_GPIO_PULL_UP:
return PULL_UP;
case LL_GPIO_PULL_DOWN:
return PULL_DOWN;
case LL_GPIO_PULL_NO:
return PULL_NONE;
default:
return PULL_NONE;
}
}