74 lines
2.6 KiB
C
74 lines
2.6 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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* SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
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* Copyright (c) 2019, Lucian Copeland for Adafruit Industries
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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 <stdint.h>
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#include <string.h>
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#include "py/mperrno.h"
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#include "py/runtime.h"
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#include "shared-bindings/analogio/AnalogOut.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "supervisor/shared/translate.h"
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#include "components/driver/include/driver/dac_common.h"
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#include "common-hal/microcontroller/Pin.h"
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void common_hal_analogio_analogout_construct(analogio_analogout_obj_t* self,
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const mcu_pin_obj_t *pin) {
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if (pin == &pin_GPIO17) {
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self->channel = DAC_CHANNEL_1;
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} else if (pin == &pin_GPIO18) {
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self->channel = DAC_CHANNEL_2;
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} else {
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mp_raise_ValueError(translate("Invalid DAC pin supplied"));
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}
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dac_output_enable(self->channel);
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}
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bool common_hal_analogio_analogout_deinited(analogio_analogout_obj_t *self) {
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return (self->channel == DAC_CHANNEL_MAX);
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}
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void common_hal_analogio_analogout_deinit(analogio_analogout_obj_t *self) {
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dac_output_disable(self->channel);
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self->channel = DAC_CHANNEL_MAX;
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}
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void common_hal_analogio_analogout_set_value(analogio_analogout_obj_t *self,
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uint16_t value) {
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uint8_t dac_value = (value * 255) / 65535;
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dac_output_enable(self->channel);
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dac_output_voltage(self->channel, dac_value);
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}
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void analogout_reset(void) {
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dac_output_disable(DAC_CHANNEL_1);
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dac_output_disable(DAC_CHANNEL_2);
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}
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