mirror of
https://github.com/espressif/esp-idf.git
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124 lines
3.3 KiB
C
124 lines
3.3 KiB
C
/*
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* SPDX-FileCopyrightText: 2019-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include "esp_log.h"
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#include "esp_err.h"
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#include "esp_check.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/semphr.h"
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#include "freertos/timers.h"
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#include "driver/rtc_io.h"
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#include "driver/dac.h"
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#include "soc/dac_periph.h"
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#include "hal/dac_hal.h"
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extern portMUX_TYPE rtc_spinlock; //TODO: Will be placed in the appropriate position after the rtc module is finished.
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static __attribute__((unused)) const char *TAG = "DAC";
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/*---------------------------------------------------------------
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DAC
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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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ESP_RETURN_ON_FALSE(channel < DAC_CHANNEL_MAX, ESP_ERR_INVALID_ARG, TAG, "DAC channel error");
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*gpio_num = (gpio_num_t)dac_periph_signal.dac_channel_io_num[channel];
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return ESP_OK;
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}
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static esp_err_t dac_rtc_pad_init(dac_channel_t channel)
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{
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ESP_RETURN_ON_FALSE(channel < DAC_CHANNEL_MAX, ESP_ERR_INVALID_ARG, TAG, "DAC channel error");
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gpio_num_t gpio_num = 0;
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dac_pad_get_io_num(channel, &gpio_num);
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rtc_gpio_init(gpio_num);
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rtc_gpio_set_direction(gpio_num, RTC_GPIO_MODE_DISABLED);
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rtc_gpio_pullup_dis(gpio_num);
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rtc_gpio_pulldown_dis(gpio_num);
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return ESP_OK;
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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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ESP_RETURN_ON_FALSE(channel < DAC_CHANNEL_MAX, ESP_ERR_INVALID_ARG, TAG, "DAC channel error");
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dac_rtc_pad_init(channel);
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portENTER_CRITICAL(&rtc_spinlock);
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dac_hal_power_on(channel);
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dac_hal_rtc_sync_by_adc(false);
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portEXIT_CRITICAL(&rtc_spinlock);
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return ESP_OK;
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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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ESP_RETURN_ON_FALSE(channel < DAC_CHANNEL_MAX, ESP_ERR_INVALID_ARG, TAG, "DAC channel error");
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portENTER_CRITICAL(&rtc_spinlock);
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dac_hal_power_down(channel);
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portEXIT_CRITICAL(&rtc_spinlock);
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return ESP_OK;
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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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ESP_RETURN_ON_FALSE(channel < DAC_CHANNEL_MAX, ESP_ERR_INVALID_ARG, TAG, "DAC channel error");
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portENTER_CRITICAL(&rtc_spinlock);
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dac_hal_update_output_value(channel, dac_value);
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portEXIT_CRITICAL(&rtc_spinlock);
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return ESP_OK;
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}
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esp_err_t dac_out_voltage(dac_channel_t channel, uint8_t dac_value)
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{
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ESP_RETURN_ON_FALSE(channel < DAC_CHANNEL_MAX, ESP_ERR_INVALID_ARG, TAG, "DAC channel error");
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portENTER_CRITICAL(&rtc_spinlock);
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dac_hal_update_output_value(channel, dac_value);
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portEXIT_CRITICAL(&rtc_spinlock);
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return ESP_OK;
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}
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esp_err_t dac_cw_generator_enable(void)
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{
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portENTER_CRITICAL(&rtc_spinlock);
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dac_hal_cw_generator_enable();
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portEXIT_CRITICAL(&rtc_spinlock);
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return ESP_OK;
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}
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esp_err_t dac_cw_generator_disable(void)
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{
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portENTER_CRITICAL(&rtc_spinlock);
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dac_hal_cw_generator_disable();
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portEXIT_CRITICAL(&rtc_spinlock);
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return ESP_OK;
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}
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esp_err_t dac_cw_generator_config(dac_cw_config_t *cw)
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{
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ESP_RETURN_ON_FALSE(cw, ESP_ERR_INVALID_ARG, TAG, "invalid clock configuration");
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portENTER_CRITICAL(&rtc_spinlock);
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dac_hal_cw_generator_config(cw);
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portEXIT_CRITICAL(&rtc_spinlock);
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return ESP_OK;
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}
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