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https://github.com/espressif/esp-idf.git
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72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/*
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* SPDX-FileCopyrightText: 2022-2026 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 "dac_priv_common.h"
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#include "driver/dac_oneshot.h"
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#include "hal/dac_ll.h"
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#include "esp_check.h"
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#include "esp_log.h"
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struct dac_oneshot_s {
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dac_oneshot_config_t cfg; /*!< Oneshot mode configurations */
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};
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esp_err_t dac_oneshot_new_channel(const dac_oneshot_config_t *oneshot_cfg, dac_oneshot_handle_t *ret_handle)
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{
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/* Parameters validation */
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DAC_NULL_POINTER_CHECK(oneshot_cfg);
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DAC_NULL_POINTER_CHECK(ret_handle);
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ESP_RETURN_ON_FALSE(IS_VALID_DAC_CHANNEL(oneshot_cfg->chan_id), ESP_ERR_INVALID_ARG, TAG, "invalid dac channel id");
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esp_err_t ret = ESP_OK;
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/* Resources allocation */
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dac_oneshot_handle_t handle = heap_caps_calloc(1, sizeof(struct dac_oneshot_s), DAC_MEM_ALLOC_CAPS);
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ESP_RETURN_ON_FALSE(handle, ESP_ERR_NO_MEM, TAG, "no memory for the dac oneshot handle");
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handle->cfg = *oneshot_cfg;
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/* Register and enable the dac channel */
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ESP_GOTO_ON_ERROR(dac_priv_register_channel(oneshot_cfg->chan_id), err2, TAG, "register dac channel %d failed", oneshot_cfg->chan_id);
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ESP_GOTO_ON_ERROR(dac_priv_enable_channel(oneshot_cfg->chan_id), err1, TAG, "enable dac channel %d failed", oneshot_cfg->chan_id);
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*ret_handle = handle;
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return ret;
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err1:
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dac_priv_deregister_channel(oneshot_cfg->chan_id);
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err2:
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free(handle);
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return ret;
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}
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esp_err_t dac_oneshot_del_channel(dac_oneshot_handle_t handle)
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{
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DAC_NULL_POINTER_CHECK(handle);
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/* Disable and deregister the channel */
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ESP_RETURN_ON_ERROR(dac_priv_disable_channel(handle->cfg.chan_id), TAG, "disable dac channel %d failed", handle->cfg.chan_id);
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ESP_RETURN_ON_ERROR(dac_priv_deregister_channel(handle->cfg.chan_id), TAG, "deregister dac channel %d failed", handle->cfg.chan_id);
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/* Free resources */
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free(handle);
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return ESP_OK;
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}
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esp_err_t dac_oneshot_output_voltage(dac_oneshot_handle_t handle, uint8_t digi_value)
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{
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if (!handle) {
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return ESP_ERR_INVALID_ARG;
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}
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/* Set the voltage by the digital value */
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DAC_ENTER_CRITICAL_SAFE();
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dac_ll_update_output_value(handle->cfg.chan_id, digi_value);
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DAC_EXIT_CRITICAL_SAFE();
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return ESP_OK;
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}
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