circuitpython/ports/esp32s2/common-hal/digitalio/DigitalInOut.c

154 lines
5.2 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017-2020 Scott Shawcroft 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 "components/driver/include/driver/gpio.h"
#include "components/soc/include/hal/gpio_hal.h"
void common_hal_digitalio_digitalinout_never_reset(
digitalio_digitalinout_obj_t *self) {
never_reset_pin_number(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_config_t config;
config.pin_bit_mask = 1ull << pin->number;
config.mode = GPIO_MODE_INPUT;
config.pull_up_en = GPIO_PULLUP_DISABLE;
config.pull_down_en = GPIO_PULLDOWN_DISABLE;
config.intr_type = GPIO_INTR_DISABLE;
if (gpio_config(&config) != ESP_OK) {
return DIGITALINOUT_PIN_BUSY;
}
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->number);
self->pin = NULL;
}
void common_hal_digitalio_digitalinout_switch_to_input(
digitalio_digitalinout_obj_t *self, digitalio_pull_t pull) {
common_hal_digitalio_digitalinout_set_pull(self, pull);
gpio_set_direction(self->pin->number, GPIO_MODE_DEF_INPUT);
}
digitalinout_result_t 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_value(self, value);
return common_hal_digitalio_digitalinout_set_drive_mode(self, drive_mode);
}
digitalio_direction_t common_hal_digitalio_digitalinout_get_direction(
digitalio_digitalinout_obj_t *self) {
uint32_t iomux = READ_PERI_REG(GPIO_PIN_MUX_REG[self->pin->number]);
if ((iomux & FUN_IE) != 0) {
return DIRECTION_INPUT;
}
return DIRECTION_OUTPUT;
}
void common_hal_digitalio_digitalinout_set_value(
digitalio_digitalinout_obj_t *self, bool value) {
self->output_value = value;
gpio_set_level(self->pin->number, value);
}
bool common_hal_digitalio_digitalinout_get_value(
digitalio_digitalinout_obj_t *self) {
if (common_hal_digitalio_digitalinout_get_direction(self) == DIRECTION_INPUT) {
return gpio_get_level(self->pin->number) == 1;
}
return self->output_value;
}
digitalinout_result_t common_hal_digitalio_digitalinout_set_drive_mode(
digitalio_digitalinout_obj_t *self,
digitalio_drive_mode_t drive_mode) {
gpio_num_t number = self->pin->number;
gpio_mode_t mode;
if (drive_mode == DRIVE_MODE_OPEN_DRAIN) {
mode = GPIO_MODE_DEF_OD;
} else {
mode = GPIO_MODE_DEF_OUTPUT;
}
esp_err_t result = gpio_set_direction(number, mode);
if (result != ESP_OK) {
return DIGITALINOUT_INPUT_ONLY;
}
return DIGITALINOUT_OK;
}
digitalio_drive_mode_t common_hal_digitalio_digitalinout_get_drive_mode(
digitalio_digitalinout_obj_t *self) {
if (GPIO_HAL_GET_HW(GPIO_PORT_0)->pin[self->pin->number].pad_driver == 1) {
return DRIVE_MODE_OPEN_DRAIN;
}
return DRIVE_MODE_PUSH_PULL;
}
void common_hal_digitalio_digitalinout_set_pull(
digitalio_digitalinout_obj_t *self, digitalio_pull_t pull) {
gpio_num_t number = self->pin->number;
gpio_pullup_dis(number);
gpio_pulldown_dis(number);
if (pull == PULL_UP) {
gpio_pullup_en(number);
} else if (pull == PULL_DOWN) {
gpio_pulldown_en(number);
}
}
digitalio_pull_t common_hal_digitalio_digitalinout_get_pull(
digitalio_digitalinout_obj_t *self) {
gpio_num_t gpio_num = self->pin->number;
if (REG_GET_BIT(GPIO_PIN_MUX_REG[gpio_num], FUN_PU) == 1) {
return PULL_UP;
} else if (REG_GET_BIT(GPIO_PIN_MUX_REG[gpio_num], FUN_PD) == 1) {
return PULL_DOWN;
}
return PULL_NONE;
}