esp-idf/components/driver/esp32s2/dac.c
2021-08-26 14:01:24 +08:00

133 lines
3.4 KiB
C

/*
* SPDX-FileCopyrightText: 2019-2021 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <string.h>
#include "esp_log.h"
#include "esp_err.h"
#include "esp_check.h"
#include "esp_pm.h"
#include "freertos/FreeRTOS.h"
#include "freertos/semphr.h"
#include "freertos/timers.h"
#include "driver/rtc_io.h"
#include "driver/dac.h"
#include "soc/dac_periph.h"
#include "hal/dac_hal.h"
static const char *TAG = "DAC";
extern portMUX_TYPE rtc_spinlock; //TODO: Will be placed in the appropriate position after the rtc module is finished.
#define DAC_ENTER_CRITICAL() portENTER_CRITICAL(&rtc_spinlock)
#define DAC_EXIT_CRITICAL() portEXIT_CRITICAL(&rtc_spinlock)
#ifdef CONFIG_PM_ENABLE
static esp_pm_lock_handle_t s_dac_digi_lock = NULL;
#endif //CONFIG_PM_ENABLE
/*---------------------------------------------------------------
Digital controller setting
---------------------------------------------------------------*/
esp_err_t dac_digi_init(void)
{
DAC_ENTER_CRITICAL();
dac_hal_digi_init();
DAC_EXIT_CRITICAL();
return ESP_OK;
}
esp_err_t dac_digi_deinit(void)
{
#ifdef CONFIG_PM_ENABLE
if (s_dac_digi_lock) {
esp_pm_lock_delete(s_dac_digi_lock);
s_dac_digi_lock = NULL;
}
#endif
DAC_ENTER_CRITICAL();
dac_hal_digi_deinit();
DAC_EXIT_CRITICAL();
return ESP_OK;
}
esp_err_t dac_digi_controller_config(const dac_digi_config_t *cfg)
{
ESP_RETURN_ON_FALSE(cfg->mode < DAC_CONV_MAX, ESP_ERR_INVALID_ARG, TAG, "DAC mode error");
ESP_RETURN_ON_FALSE(cfg->interval > 0 && cfg->interval < 4096, ESP_ERR_INVALID_ARG, TAG, "DAC interval error");
ESP_RETURN_ON_FALSE(cfg->dig_clk.div_num < 256, ESP_ERR_INVALID_ARG, TAG, "DAC clk div_num error");
ESP_RETURN_ON_FALSE(cfg->dig_clk.div_b > 0 && cfg->dig_clk.div_b < 64, ESP_ERR_INVALID_ARG, TAG, "DAC clk div_b error");
ESP_RETURN_ON_FALSE(cfg->dig_clk.div_a < 64, ESP_ERR_INVALID_ARG, TAG, "DAC clk div_a error");
#ifdef CONFIG_PM_ENABLE
esp_err_t err;
if (s_dac_digi_lock == NULL) {
if (cfg->dig_clk.use_apll) {
err = esp_pm_lock_create(ESP_PM_NO_LIGHT_SLEEP, 0, "dac_dma", &s_dac_digi_lock);
} else {
err = esp_pm_lock_create(ESP_PM_APB_FREQ_MAX, 0, "dac_dma", &s_dac_digi_lock);
}
if (err != ESP_OK) {
s_dac_digi_lock = NULL;
ESP_LOGE(TAG, "DAC-DMA pm lock error");
return err;
}
}
#endif //CONFIG_PM_ENABLE
DAC_ENTER_CRITICAL();
dac_hal_digi_controller_config(cfg);
DAC_EXIT_CRITICAL();
return ESP_OK;
}
esp_err_t dac_digi_start(void)
{
#ifdef CONFIG_PM_ENABLE
ESP_RETURN_ON_FALSE(s_dac_digi_lock, ESP_FAIL, TAG, "Should start after call `dac_digi_controller_config`");
esp_pm_lock_acquire(s_dac_digi_lock);
#endif
DAC_ENTER_CRITICAL();
dac_hal_digi_start();
DAC_EXIT_CRITICAL();
return ESP_OK;
}
esp_err_t dac_digi_stop(void)
{
#ifdef CONFIG_PM_ENABLE
if (s_dac_digi_lock) {
esp_pm_lock_release(s_dac_digi_lock);
}
#endif
DAC_ENTER_CRITICAL();
dac_hal_digi_stop();
DAC_EXIT_CRITICAL();
return ESP_OK;
}
esp_err_t dac_digi_fifo_reset(void)
{
DAC_ENTER_CRITICAL();
dac_hal_digi_fifo_reset();
DAC_EXIT_CRITICAL();
return ESP_OK;
}
esp_err_t dac_digi_reset(void)
{
DAC_ENTER_CRITICAL();
dac_hal_digi_reset();
DAC_EXIT_CRITICAL();
return ESP_OK;
}