baa7898e35
1. update register file about adc; 2. fix adc driver; 3. add UT for adc/dac; See merge request espressif/esp-idf!7776
114 lines
2.7 KiB
C
114 lines
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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#pragma once
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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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#include "driver/gpio.h"
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#include "hal/dac_types.h"
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/**
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* @brief Get the GPIO number of a specific DAC channel.
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*
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* @param channel Channel to get the gpio number
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* @param gpio_num output buffer to hold the gpio number
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* @return
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* - ESP_OK if success
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*/
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esp_err_t dac_pad_get_io_num(dac_channel_t channel, gpio_num_t *gpio_num);
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/**
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* @brief Set DAC output voltage.
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* DAC output is 8-bit. Maximum (255) corresponds to VDD3P3_RTC.
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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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* @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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*/
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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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* @return
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* - ESP_OK success
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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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* @return
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* - ESP_OK success
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*/
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esp_err_t dac_i2s_enable(void);
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/**
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* @brief Disable DAC output data from I2S
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*
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* @return
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* - ESP_OK success
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*/
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esp_err_t dac_i2s_disable(void);
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/**
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* @brief Enable cosine wave generator output.
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*
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* @return
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* - ESP_OK success
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*/
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esp_err_t dac_cw_generator_enable(void);
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/**
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* @brief Disable cosine wave generator output.
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*
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* @return
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* - ESP_OK success
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*/
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esp_err_t dac_cw_generator_disable(void);
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/**
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* @brief Config the cosine wave generator function in DAC module.
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*
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* @param cw Configuration.
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* @return
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* - ESP_OK success
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*/
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esp_err_t dac_cw_generator_config(dac_cw_config_t *cw);
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#ifdef __cplusplus
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}
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#endif
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