circuitpython/ports/espressif/common-hal/analogio/AnalogOut.c

Ignoring revisions in .git-blame-ignore-revs. Click here to bypass and see the normal blame view.

90 lines
2.9 KiB
C
Raw Normal View History

2020-09-28 12:11:08 -04:00
/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
* 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 <stdint.h>
#include <string.h>
#include "py/mperrno.h"
#include "py/runtime.h"
#include "shared-bindings/analogio/AnalogOut.h"
#include "shared-bindings/microcontroller/Pin.h"
2022-05-27 15:59:54 -04:00
#include "supervisor/shared/translate/translate.h"
2020-09-28 12:11:08 -04:00
#ifdef CONFIG_IDF_TARGET_ESP32S2
#include "components/driver/include/driver/dac_common.h"
#endif
2020-10-06 15:00:26 -04:00
2020-09-28 12:11:08 -04:00
#include "common-hal/microcontroller/Pin.h"
2021-03-15 09:57:36 -04:00
void common_hal_analogio_analogout_construct(analogio_analogout_obj_t *self,
const mcu_pin_obj_t *pin) {
#ifdef CONFIG_IDF_TARGET_ESP32S2
2020-10-06 15:00:26 -04:00
if (pin == &pin_GPIO17) {
self->channel = DAC_CHANNEL_1;
} else if (pin == &pin_GPIO18) {
self->channel = DAC_CHANNEL_2;
} else {
raise_ValueError_invalid_pin();
2020-10-06 15:00:26 -04:00
}
dac_output_enable(self->channel);
#else
mp_raise_NotImplementedError(NULL);
#endif
2020-09-28 12:11:08 -04:00
}
bool common_hal_analogio_analogout_deinited(analogio_analogout_obj_t *self) {
#ifdef CONFIG_IDF_TARGET_ESP32S2
2021-03-15 09:57:36 -04:00
return self->channel == DAC_CHANNEL_MAX;
#else
return false;
#endif
2020-09-28 12:11:08 -04:00
}
void common_hal_analogio_analogout_deinit(analogio_analogout_obj_t *self) {
#ifdef CONFIG_IDF_TARGET_ESP32S2
2020-10-06 15:00:26 -04:00
dac_output_disable(self->channel);
self->channel = DAC_CHANNEL_MAX;
#endif
2020-09-28 12:11:08 -04:00
}
void common_hal_analogio_analogout_set_value(analogio_analogout_obj_t *self,
2021-03-15 09:57:36 -04:00
uint16_t value) {
#ifdef CONFIG_IDF_TARGET_ESP32S2
2020-10-06 15:00:26 -04:00
uint8_t dac_value = (value * 255) / 65535;
dac_output_enable(self->channel);
dac_output_voltage(self->channel, dac_value);
#endif
2020-09-28 12:11:08 -04:00
}
void analogout_reset(void) {
#ifdef CONFIG_IDF_TARGET_ESP32S2
2020-10-06 15:00:26 -04:00
dac_output_disable(DAC_CHANNEL_1);
dac_output_disable(DAC_CHANNEL_2);
#endif
2020-09-28 12:11:08 -04:00
}