kopia lustrzana https://github.com/espressif/esp-idf
100 wiersze
2.7 KiB
C
100 wiersze
2.7 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef _DRIVER_DAC_H_
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#define _DRIVER_DAC_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#include "esp_err.h"
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typedef enum {
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DAC_CHANNEL_1 = 1, /*!< DAC channel 1 is GPIO25 */
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DAC_CHANNEL_2, /*!< DAC channel 2 is GPIO26 */
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DAC_CHANNEL_MAX,
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} dac_channel_t;
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/** @cond */
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/**
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* @brief Set DAC output voltage.
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*
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* @note Function has been deprecated, please use dac_output_voltage instead.
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* This name will be removed in a future release.
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* The difference is that before calling dac_output_voltage, we need to initialize the dac pad by dac_output_enable
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*
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*
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* @param channel DAC channel
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* @param dac_value DAC output value
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t dac_out_voltage(dac_channel_t channel, uint8_t dac_value) __attribute__ ((deprecated));
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/** @endcond */
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/**
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* @brief Set DAC output voltage.
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*
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* DAC output is 8-bit. Maximum (255) corresponds to VDD.
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*
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* @note Need to configure DAC pad before calling this function.
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* DAC channel 1 is attached to GPIO25, DAC channel 2 is attached to GPIO26
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*
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* @param channel DAC channel
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* @param dac_value DAC output value
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*
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* @return
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* - ESP_OK success
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* - ESP_ERR_INVALID_ARG Parameter error
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*/
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esp_err_t dac_output_voltage(dac_channel_t channel, uint8_t dac_value);
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/**
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* @brief DAC pad output enable
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*
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* @param channel DAC channel
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* @note DAC channel 1 is attached to GPIO25, DAC channel 2 is attached to GPIO26
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* I2S left channel will be mapped to DAC channel 2
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* I2S right channel will be mapped to DAC channel 1
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*/
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esp_err_t dac_output_enable(dac_channel_t channel);
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/**
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* @brief DAC pad output disable
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*
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* @param channel DAC channel
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* @note DAC channel 1 is attached to GPIO25, DAC channel 2 is attached to GPIO26
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*/
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esp_err_t dac_output_disable(dac_channel_t channel);
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/**
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* @brief Enable DAC output data from I2S
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*/
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esp_err_t dac_i2s_enable();
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/**
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* @brief Disable DAC output data from I2S
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*/
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esp_err_t dac_i2s_disable();
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#ifdef __cplusplus
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}
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#endif
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#endif /*_DRIVER_DAC_H_*/
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