ESP-IDF
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Outline
#include <string.h>
#include "soc/soc_caps.h"
#include "dac_priv_common.h"
#include "driver/dac_oneshot.h"
#define LOG_LOCAL_LEVEL
#include "esp_check.h"
#include "esp_pm.h"
dac_oneshot_s
TAG
dac_oneshot_new_channel(const dac_oneshot_config_t *, dac_oneshot_handle_t *)
dac_oneshot_del_channel(dac_oneshot_handle_t)
dac_oneshot_output_voltage(dac_oneshot_handle_t, uint8_t)
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/esp_driver_dac/dac_oneshot.c
 
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/* * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #include <string.h> #include "soc/soc_caps.h" #include "dac_priv_common.h" #include "driver/dac_oneshot.h" #if CONFIG_DAC_ENABLE_DEBUG_LOG // The local log level must be defined before including esp_log.h // Set the maximum log level for this source file #define LOG_LOCAL_LEVEL ESP_LOG_DEBUG/* ... */ #endif #include "esp_check.h" #if CONFIG_PM_ENABLE #include "esp_pm.h" #endif struct dac_oneshot_s { dac_oneshot_config_t cfg; /*!< Oneshot mode configurations */ }{ ... }; static const char *TAG = "dac_oneshot"; esp_err_t dac_oneshot_new_channel(const dac_oneshot_config_t *oneshot_cfg, dac_oneshot_handle_t *ret_handle) { #if CONFIG_DAC_ENABLE_DEBUG_LOG esp_log_level_set(TAG, ESP_LOG_DEBUG); #endif /* Parameters validation */ DAC_NULL_POINTER_CHECK(oneshot_cfg); DAC_NULL_POINTER_CHECK(ret_handle); ESP_RETURN_ON_FALSE(oneshot_cfg->chan_id < SOC_DAC_CHAN_NUM, ESP_ERR_INVALID_ARG, TAG, "invalid dac channel id"); esp_err_t ret = ESP_OK; /* Resources allocation */ dac_oneshot_handle_t handle = heap_caps_calloc(1, sizeof(struct dac_oneshot_s), MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT); ESP_RETURN_ON_FALSE(handle, ESP_ERR_NO_MEM, TAG, "no memory for the dac oneshot handle"); memcpy(&handle->cfg, oneshot_cfg, sizeof(dac_oneshot_config_t)); /* Register and enable the dac channel */ ESP_GOTO_ON_ERROR(dac_priv_register_channel(oneshot_cfg->chan_id, "dac oneshot"), err2, TAG, "register dac channel %d failed", oneshot_cfg->chan_id); ESP_GOTO_ON_ERROR(dac_priv_enable_channel(oneshot_cfg->chan_id), err1, TAG, "enable dac channel %d failed", oneshot_cfg->chan_id); *ret_handle = handle; return ret; err1: dac_priv_deregister_channel(oneshot_cfg->chan_id); err2: free(handle); return ret; }{ ... } esp_err_t dac_oneshot_del_channel(dac_oneshot_handle_t handle) { DAC_NULL_POINTER_CHECK(handle); /* Disable and deregister the channel */ ESP_RETURN_ON_ERROR(dac_priv_disable_channel(handle->cfg.chan_id), TAG, "disable dac channel %d failed", handle->cfg.chan_id); ESP_RETURN_ON_ERROR(dac_priv_deregister_channel(handle->cfg.chan_id), TAG, "deregister dac channel %d failed", handle->cfg.chan_id); /* Free resources */ free(handle); return ESP_OK; }{ ... } esp_err_t dac_oneshot_output_voltage(dac_oneshot_handle_t handle, uint8_t digi_value) { if (!handle) { return ESP_ERR_INVALID_ARG; }{...} /* Set the voltage by the digital value */ DAC_RTC_ENTER_CRITICAL_SAFE(); dac_ll_update_output_value(handle->cfg.chan_id, digi_value); DAC_RTC_EXIT_CRITICAL_SAFE(); return ESP_OK; }{ ... }
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