139 lines
5.1 KiB
C
139 lines
5.1 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright 2019 Sony Semiconductor Solutions Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <arch/board/board.h>
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#include "py/runtime.h"
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#include "shared-bindings/digitalio/DigitalInOut.h"
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digitalinout_result_t common_hal_digitalio_digitalinout_construct(digitalio_digitalinout_obj_t *self, const mcu_pin_obj_t *pin) {
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if (pin->analog) {
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mp_raise_ValueError(translate("DigitalInOut not supported on given pin"));
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}
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claim_pin(pin);
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self->pin = pin;
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self->input = true;
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self->open_drain = false;
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board_gpio_write(self->pin->number, -1);
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board_gpio_config(self->pin->number, 0, true, true, PIN_FLOAT);
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return DIGITALINOUT_OK;
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}
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void common_hal_digitalio_digitalinout_deinit(digitalio_digitalinout_obj_t *self) {
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if (common_hal_digitalio_digitalinout_deinited(self)) {
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return;
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}
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board_gpio_write(self->pin->number, -1);
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board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
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reset_pin_number(self->pin->number);
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self->pin = NULL;
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}
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bool common_hal_digitalio_digitalinout_deinited(digitalio_digitalinout_obj_t *self) {
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return self->pin == NULL;
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}
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void common_hal_digitalio_digitalinout_switch_to_input(digitalio_digitalinout_obj_t *self, digitalio_pull_t pull) {
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self->input = true;
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self->pull = pull;
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board_gpio_write(self->pin->number, -1);
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board_gpio_config(self->pin->number, 0, true, true, pull);
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}
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digitalinout_result_t common_hal_digitalio_digitalinout_switch_to_output(digitalio_digitalinout_obj_t *self, bool value, digitalio_drive_mode_t drive_mode) {
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self->input = false;
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self->open_drain = drive_mode == DRIVE_MODE_OPEN_DRAIN;
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board_gpio_write(self->pin->number, -1);
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board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
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if (self->open_drain) {
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board_gpio_write(self->pin->number, 0);
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}
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common_hal_digitalio_digitalinout_set_value(self, value);
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return DIGITALINOUT_OK;
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}
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digitalio_direction_t common_hal_digitalio_digitalinout_get_direction(digitalio_digitalinout_obj_t *self) {
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return self->input ? DIRECTION_INPUT : DIRECTION_OUTPUT;
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}
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void common_hal_digitalio_digitalinout_set_value(digitalio_digitalinout_obj_t *self, bool value) {
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if (self->open_drain) {
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if (value) {
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board_gpio_write(self->pin->number, -1);
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board_gpio_config(self->pin->number, 0, true, true, PIN_PULLUP);
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} else {
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board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
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board_gpio_write(self->pin->number, 0);
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}
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} else {
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board_gpio_write(self->pin->number, value);
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}
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}
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bool common_hal_digitalio_digitalinout_get_value(digitalio_digitalinout_obj_t *self) {
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return board_gpio_read(self->pin->number);
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}
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digitalinout_result_t common_hal_digitalio_digitalinout_set_drive_mode(digitalio_digitalinout_obj_t *self, digitalio_drive_mode_t drive_mode) {
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if (drive_mode == DRIVE_MODE_PUSH_PULL) {
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board_gpio_write(self->pin->number, -1);
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board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
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self->open_drain = false;
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} else {
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board_gpio_write(self->pin->number, -1);
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board_gpio_config(self->pin->number, 0, false, true, PIN_FLOAT);
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board_gpio_write(self->pin->number, 0);
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self->open_drain = true;
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}
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return DIGITALINOUT_OK;
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}
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digitalio_drive_mode_t common_hal_digitalio_digitalinout_get_drive_mode(digitalio_digitalinout_obj_t *self) {
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return self->open_drain ? DRIVE_MODE_OPEN_DRAIN : DRIVE_MODE_PUSH_PULL;
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}
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void common_hal_digitalio_digitalinout_set_pull(digitalio_digitalinout_obj_t *self, digitalio_pull_t pull) {
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self->pull = pull;
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board_gpio_write(self->pin->number, -1);
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board_gpio_config(self->pin->number, 0, true, true, pull);
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}
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digitalio_pull_t common_hal_digitalio_digitalinout_get_pull(digitalio_digitalinout_obj_t *self) {
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return self->pull;
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}
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void common_hal_digitalio_digitalinout_never_reset(digitalio_digitalinout_obj_t *self) {
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never_reset_pin_number(self->pin->number);
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}
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