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circuitpython/ports/cxd56/common-hal/digitalio/DigitalInOut.c

136 lines
5.0 KiB

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright 2019 Sony Semiconductor Solutions Corporation
*
* 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 <arch/board/board.h>
#include "py/runtime.h"
#include "shared-bindings/digitalio/DigitalInOut.h"
digitalinout_result_t common_hal_digitalio_digitalinout_construct(digitalio_digitalinout_obj_t *self, const mcu_pin_obj_t *pin) {
if (pin->analog) {
mp_raise_ValueError(translate("DigitalInOut not supported on given pin"));
}
claim_pin(pin);
self->pin = pin;
self->input = true;
self->open_drain = false;
board_gpio_write(self->pin->number, -1);
board_gpio_config(self->pin->number, 0, true, true, PIN_FLOAT);
return DIGITALINOUT_OK;
}
void common_hal_digitalio_digitalinout_deinit(digitalio_digitalinout_obj_t *self) {
if (common_hal_digitalio_digitalinout_deinited(self)) {
return;
}
board_gpio_write(self->pin->number, -1);
board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
reset_pin_number(self->pin->number);
self->pin = NULL;
}
bool common_hal_digitalio_digitalinout_deinited(digitalio_digitalinout_obj_t *self) {
return self->pin == NULL;
}
void common_hal_digitalio_digitalinout_switch_to_input(digitalio_digitalinout_obj_t *self, digitalio_pull_t pull) {
self->input = true;
self->pull = pull;
board_gpio_write(self->pin->number, -1);
board_gpio_config(self->pin->number, 0, true, true, pull);
}
void common_hal_digitalio_digitalinout_switch_to_output(digitalio_digitalinout_obj_t *self, bool value, digitalio_drive_mode_t drive_mode) {
self->input = false;
self->open_drain = drive_mode == DRIVE_MODE_OPEN_DRAIN;
board_gpio_write(self->pin->number, -1);
board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
if (self->open_drain) {
board_gpio_write(self->pin->number, 0);
}
common_hal_digitalio_digitalinout_set_value(self, value);
}
digitalio_direction_t common_hal_digitalio_digitalinout_get_direction(digitalio_digitalinout_obj_t *self) {
return self->input ? DIRECTION_INPUT : DIRECTION_OUTPUT;
}
void common_hal_digitalio_digitalinout_set_value(digitalio_digitalinout_obj_t *self, bool value) {
if (self->open_drain) {
if (value) {
board_gpio_write(self->pin->number, -1);
board_gpio_config(self->pin->number, 0, true, true, PIN_PULLUP);
} else {
board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
board_gpio_write(self->pin->number, 0);
}
} else {
board_gpio_write(self->pin->number, value);
}
}
bool common_hal_digitalio_digitalinout_get_value(digitalio_digitalinout_obj_t *self) {
return board_gpio_read(self->pin->number);
}
void common_hal_digitalio_digitalinout_set_drive_mode(digitalio_digitalinout_obj_t *self, digitalio_drive_mode_t drive_mode) {
if (drive_mode == DRIVE_MODE_PUSH_PULL) {
board_gpio_write(self->pin->number, -1);
board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
self->open_drain = false;
} else {
board_gpio_write(self->pin->number, -1);
board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
board_gpio_write(self->pin->number, 0);
self->open_drain = true;
}
}
digitalio_drive_mode_t common_hal_digitalio_digitalinout_get_drive_mode(digitalio_digitalinout_obj_t *self) {
return self->open_drain ? DRIVE_MODE_OPEN_DRAIN : DRIVE_MODE_PUSH_PULL;
}
void common_hal_digitalio_digitalinout_set_pull(digitalio_digitalinout_obj_t *self, digitalio_pull_t pull) {
self->pull = pull;
board_gpio_write(self->pin->number, -1);
board_gpio_config(self->pin->number, 0, true, true, pull);
}
digitalio_pull_t common_hal_digitalio_digitalinout_get_pull(digitalio_digitalinout_obj_t *self) {
return self->pull;
}
void common_hal_digitalio_digitalinout_never_reset(digitalio_digitalinout_obj_t *self) {
never_reset_pin_number(self->pin->number);
}