adc: seperate hal layer and driver layer

components/driver/esp32c3/adc.c

@@ -83,13 +83,12 @@ static _lock_t sar_adc2_mutex;
 #define IN_SUC_EOF_BIT GDMA_LL_EVENT_RX_SUC_EOF
 
 typedef struct adc_digi_context_t {
-    intr_handle_t           dma_intr_hdl;               //MD interrupt handle
     uint32_t                bytes_between_intr;         //bytes between in suc eof intr
     uint8_t                 *rx_dma_buf;                //dma buffer
-    adc_dma_hal_context_t   hal_dma;                    //dma context (hal)
+    adc_hal_context_t       hal;                        //hal context
-    adc_dma_hal_config_t    hal_dma_config;             //dma config (hal)
     gdma_channel_handle_t   rx_dma_channel;             //dma rx channel handle
     RingbufHandle_t         ringbuf_hdl;                //RX ringbuffer handler
+    intptr_t                rx_eof_desc_addr;           //eof descriptor address of RX channel
     bool                    ringbuf_overflow_flag;      //1: ringbuffer overflow
     bool                    driver_start_flag;          //1: driver is started; 0: driver is stoped
     bool                    use_adc1;                   //1: ADC unit1 will be used; 0: ADC unit1 won't be used.
@@ -167,12 +166,11 @@ esp_err_t adc_digi_initialize(const adc_digi_init_config_t *init_config)
     }
 
     //malloc dma descriptor
-    s_adc_digi_ctx->hal_dma_config.rx_desc = heap_caps_calloc(1, (sizeof(dma_descriptor_t)) * INTERNAL_BUF_NUM, MALLOC_CAP_DMA);
+    s_adc_digi_ctx->hal.rx_desc = heap_caps_calloc(1, (sizeof(dma_descriptor_t)) * INTERNAL_BUF_NUM, MALLOC_CAP_DMA);
-    if (!s_adc_digi_ctx->hal_dma_config.rx_desc) {
+    if (!s_adc_digi_ctx->hal.rx_desc) {
         ret = ESP_ERR_NO_MEM;
         goto cleanup;
     }
-    s_adc_digi_ctx->hal_dma_config.desc_max_num = INTERNAL_BUF_NUM;
 
     //malloc pattern table
     s_adc_digi_ctx->digi_controller_config.adc_pattern = calloc(1, SOC_ADC_PATT_LEN_MAX * sizeof(adc_digi_pattern_table_t));
@@ -218,7 +216,13 @@ esp_err_t adc_digi_initialize(const adc_digi_init_config_t *init_config)
 
     int dma_chan;
     gdma_get_channel_id(s_adc_digi_ctx->rx_dma_channel, &dma_chan);
-    s_adc_digi_ctx->hal_dma_config.dma_chan = dma_chan;
+
+    adc_hal_config_t config = {
+        .desc_max_num = INTERNAL_BUF_NUM,
+        .dma_chan = dma_chan,
+        .eof_num = s_adc_digi_ctx->bytes_between_intr / 4
+    };
+    adc_hal_context_config(&s_adc_digi_ctx->hal, &config);
 
     //enable SARADC module clock
     periph_module_enable(PERIPH_SARADC_MODULE);
@@ -239,6 +243,7 @@ static IRAM_ATTR bool adc_dma_intr(adc_digi_context_t *adc_digi_ctx);
 static IRAM_ATTR bool adc_dma_in_suc_eof_callback(gdma_channel_handle_t dma_chan, gdma_event_data_t *event_data, void *user_data)
 {
     adc_digi_context_t *adc_digi_ctx = (adc_digi_context_t *)user_data;
+    adc_digi_ctx->rx_eof_desc_addr = event_data->rx_eof_desc_addr;
     return adc_dma_intr(adc_digi_ctx);
 }
 
@@ -246,33 +251,25 @@ static IRAM_ATTR bool adc_dma_intr(adc_digi_context_t *adc_digi_ctx)
 {
     portBASE_TYPE taskAwoken = 0;
     BaseType_t ret;
+    adc_hal_dma_desc_status_t status = false;
+    dma_descriptor_t *current_desc = NULL;
+
+    while (1) {
+        status = adc_hal_get_reading_result(&adc_digi_ctx->hal, adc_digi_ctx->rx_eof_desc_addr, &current_desc);
+        if (status != ADC_DMA_DESC_FINISH) {
+            break;
+        }
 
-    while (adc_digi_ctx->hal_dma_config.cur_desc_ptr->dw0.owner == 0) {
-        dma_descriptor_t *current_desc = adc_digi_ctx->hal_dma_config.cur_desc_ptr;
         ret = xRingbufferSendFromISR(adc_digi_ctx->ringbuf_hdl, current_desc->buffer, current_desc->dw0.length, &taskAwoken);
         if (ret == pdFALSE) {
             //ringbuffer overflow
             adc_digi_ctx->ringbuf_overflow_flag = 1;
         }
-
-        adc_digi_ctx->hal_dma_config.desc_cnt += 1;
-        //cycle the dma descriptor and buffers
-        adc_digi_ctx->hal_dma_config.cur_desc_ptr = adc_digi_ctx->hal_dma_config.cur_desc_ptr->next;
-        if (!adc_digi_ctx->hal_dma_config.cur_desc_ptr) {
-            break;
-        }
     }
 
-    if (!adc_digi_ctx->hal_dma_config.cur_desc_ptr) {
+    if (status == ADC_DMA_DESC_NULL) {
-
-        assert(adc_digi_ctx->hal_dma_config.desc_cnt == adc_digi_ctx->hal_dma_config.desc_max_num);
-        //reset the current descriptor status
-        adc_digi_ctx->hal_dma_config.cur_desc_ptr = adc_digi_ctx->hal_dma_config.rx_desc;
-        adc_digi_ctx->hal_dma_config.desc_cnt = 0;
-
         //start next turns of dma operation
-        adc_hal_digi_dma_multi_descriptor(&adc_digi_ctx->hal_dma_config, adc_digi_ctx->rx_dma_buf, adc_digi_ctx->bytes_between_intr, adc_digi_ctx->hal_dma_config.desc_max_num);
+        adc_hal_digi_rxdma_start(&adc_digi_ctx->hal, adc_digi_ctx->rx_dma_buf, adc_digi_ctx->bytes_between_intr);
-        adc_hal_digi_rxdma_start(&adc_digi_ctx->hal_dma, &adc_digi_ctx->hal_dma_config);
     }
 
     if(taskAwoken == pdTRUE) {
@@ -309,26 +306,16 @@ esp_err_t adc_digi_start(void)
     }
 
     adc_hal_init();
-
     adc_hal_arbiter_config(&config);
-    adc_hal_digi_init(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config);
+    adc_hal_digi_init(&s_adc_digi_ctx->hal);
     adc_hal_digi_controller_config(&s_adc_digi_ctx->digi_controller_config);
 
-    //create dma descriptors
+    //reset ADC and DMA
-    adc_hal_digi_dma_multi_descriptor(&s_adc_digi_ctx->hal_dma_config, s_adc_digi_ctx->rx_dma_buf, s_adc_digi_ctx->bytes_between_intr, s_adc_digi_ctx->hal_dma_config.desc_max_num);
+    adc_hal_fifo_reset(&s_adc_digi_ctx->hal);
-    adc_hal_digi_set_eof_num(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config, (s_adc_digi_ctx->bytes_between_intr)/4);
-    //set the current descriptor pointer
-    s_adc_digi_ctx->hal_dma_config.cur_desc_ptr = s_adc_digi_ctx->hal_dma_config.rx_desc;
-    s_adc_digi_ctx->hal_dma_config.desc_cnt = 0;
-
-    //enable in suc eof intr
-    adc_hal_digi_ena_intr(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config, IN_SUC_EOF_BIT);
-
-    //start ADC
-    adc_hal_digi_start(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config);
-
     //start DMA
-    adc_hal_digi_rxdma_start(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config);
+    adc_hal_digi_rxdma_start(&s_adc_digi_ctx->hal, s_adc_digi_ctx->rx_dma_buf, s_adc_digi_ctx->bytes_between_intr);
+    //start ADC
+    adc_hal_digi_start(&s_adc_digi_ctx->hal);
 
     return ESP_OK;
 }
@@ -342,13 +329,13 @@ esp_err_t adc_digi_stop(void)
     s_adc_digi_ctx->driver_start_flag = 0;
 
     //disable the in suc eof intrrupt
-    adc_hal_digi_dis_intr(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config, IN_SUC_EOF_BIT);
+    adc_hal_digi_dis_intr(&s_adc_digi_ctx->hal, IN_SUC_EOF_BIT);
     //clear the in suc eof interrupt
-    adc_hal_digi_clr_intr(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config, IN_SUC_EOF_BIT);
+    adc_hal_digi_clr_intr(&s_adc_digi_ctx->hal, IN_SUC_EOF_BIT);
-    //stop DMA
-    adc_hal_digi_rxdma_stop(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config);
     //stop ADC
-    adc_hal_digi_stop(&s_adc_digi_ctx->hal_dma, &s_adc_digi_ctx->hal_dma_config);
+    adc_hal_digi_stop(&s_adc_digi_ctx->hal);
+    //stop DMA
+    adc_hal_digi_rxdma_stop(&s_adc_digi_ctx->hal);
     adc_hal_digi_deinit();
 
     ADC_DIGI_LOCK_RELEASE();
@@ -403,17 +390,13 @@ esp_err_t adc_digi_deinitialize(void)
         return ESP_ERR_INVALID_STATE;
     }
 
-    if (s_adc_digi_ctx->dma_intr_hdl) {
-        esp_intr_free(s_adc_digi_ctx->dma_intr_hdl);
-    }
-
     if(s_adc_digi_ctx->ringbuf_hdl) {
         vRingbufferDelete(s_adc_digi_ctx->ringbuf_hdl);
         s_adc_digi_ctx->ringbuf_hdl = NULL;
     }
 
     free(s_adc_digi_ctx->rx_dma_buf);
-    free(s_adc_digi_ctx->hal_dma_config.rx_desc);
+    free(s_adc_digi_ctx->hal.rx_desc);
     free(s_adc_digi_ctx->digi_controller_config.adc_pattern);
     gdma_disconnect(s_adc_digi_ctx->rx_dma_channel);
     gdma_del_channel(s_adc_digi_ctx->rx_dma_channel);

components/hal/adc_hal.c

@@ -209,11 +209,34 @@ uint32_t adc_hal_self_calibration(adc_ll_num_t adc_n, adc_channel_t channel, adc
 /*---------------------------------------------------------------
                     DMA setting
 ---------------------------------------------------------------*/
-void adc_hal_digi_dma_multi_descriptor(adc_dma_hal_config_t *dma_config, uint8_t *data_buf, uint32_t size, uint32_t num)
+void adc_hal_context_config(adc_hal_context_t *hal, const adc_hal_config_t *config)
+{
+    hal->dev = &GDMA;
+    hal->desc_dummy_head.next = hal->rx_desc;
+    hal->desc_max_num = config->desc_max_num;
+    hal->dma_chan = config->dma_chan;
+    hal->eof_num = config->eof_num;
+}
+
+void adc_hal_digi_init(adc_hal_context_t *hal)
+{
+    gdma_ll_clear_interrupt_status(hal->dev, hal->dma_chan, UINT32_MAX);
+    gdma_ll_enable_interrupt(hal->dev, hal->dma_chan, GDMA_LL_EVENT_RX_SUC_EOF, true);
+    adc_ll_digi_dma_set_eof_num(hal->eof_num);
+    adc_ll_adc1_onetime_sample_enable(false);
+    adc_ll_adc2_onetime_sample_enable(false);
+}
+
+void adc_hal_fifo_reset(adc_hal_context_t *hal)
+{
+    adc_ll_digi_reset();
+    gdma_ll_rx_reset_channel(hal->dev, hal->dma_chan);
+}
+
+static void adc_hal_digi_dma_multi_descriptor(dma_descriptor_t *desc, uint8_t *data_buf, uint32_t size, uint32_t num)
 {
     assert(((uint32_t)data_buf % 4) == 0);
     assert((size % 4) == 0);
-    dma_descriptor_t *desc = dma_config->rx_desc;
     uint32_t n = 0;
 
     while (num--) {
@@ -228,49 +251,54 @@ void adc_hal_digi_dma_multi_descriptor(adc_dma_hal_config_t *dma_config, uint8_t
     desc[n-1].next = NULL;
 }
 
-void adc_hal_digi_rxdma_start(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config)
+void adc_hal_digi_rxdma_start(adc_hal_context_t *hal, uint8_t *data_buf, uint32_t size)
 {
-    gdma_ll_rx_reset_channel(adc_dma_ctx->dev, dma_config->dma_chan);
+    //reset the current descriptor address
-    gdma_ll_rx_set_desc_addr(adc_dma_ctx->dev, dma_config->dma_chan, (uint32_t)dma_config->rx_desc);
+    hal->cur_desc_ptr = &hal->desc_dummy_head;
-    gdma_ll_rx_start(adc_dma_ctx->dev, dma_config->dma_chan);
+    adc_hal_digi_dma_multi_descriptor(hal->rx_desc, data_buf, size, hal->desc_max_num);
+    gdma_ll_rx_set_desc_addr(hal->dev, hal->dma_chan, (uint32_t)hal->rx_desc);
+    gdma_ll_rx_start(hal->dev, hal->dma_chan);
 }
 
-void adc_hal_digi_rxdma_stop(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config)
+void adc_hal_digi_start(adc_hal_context_t *hal)
-{
-    gdma_ll_rx_stop(adc_dma_ctx->dev, dma_config->dma_chan);
-}
-
-void adc_hal_digi_ena_intr(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config, uint32_t mask)
-{
-    gdma_ll_enable_interrupt(adc_dma_ctx->dev, dma_config->dma_chan, mask, true);
-}
-
-void adc_hal_digi_clr_intr(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config, uint32_t mask)
-{
-    gdma_ll_clear_interrupt_status(adc_dma_ctx->dev, dma_config->dma_chan, mask);
-}
-
-void adc_hal_digi_dis_intr(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config, uint32_t mask)
-{
-    gdma_ll_enable_interrupt(adc_dma_ctx->dev, dma_config->dma_chan, mask, false);
-}
-
-void adc_hal_digi_set_eof_num(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config, uint32_t num)
-{
-    adc_ll_digi_dma_set_eof_num(num);
-}
-
-void adc_hal_digi_start(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config)
 {
     //Set to 1: the ADC data will be sent to the DMA
     adc_ll_digi_dma_enable();
     //enable sar adc timer
     adc_ll_digi_trigger_enable();
-    //reset the adc state
-    adc_ll_digi_reset();
 }
 
-void adc_hal_digi_stop(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config)
+adc_hal_dma_desc_status_t adc_hal_get_reading_result(adc_hal_context_t *hal, const intptr_t eof_desc_addr, dma_descriptor_t **cur_desc)
+{
+    if (!hal->cur_desc_ptr->next) {
+        return ADC_DMA_DESC_NULL;
+    }
+    if ((intptr_t)hal->cur_desc_ptr == eof_desc_addr) {
+        return ADC_DMA_DESC_NOT_FINISH;
+    }
+
+    hal->cur_desc_ptr = hal->cur_desc_ptr->next;
+    *cur_desc = hal->cur_desc_ptr;
+
+    return ADC_DMA_DESC_FINISH;
+}
+
+void adc_hal_digi_rxdma_stop(adc_hal_context_t *hal)
+{
+    gdma_ll_rx_stop(hal->dev, hal->dma_chan);
+}
+
+void adc_hal_digi_clr_intr(adc_hal_context_t *hal, uint32_t mask)
+{
+    gdma_ll_clear_interrupt_status(hal->dev, hal->dma_chan, mask);
+}
+
+void adc_hal_digi_dis_intr(adc_hal_context_t *hal, uint32_t mask)
+{
+    gdma_ll_enable_interrupt(hal->dev, hal->dma_chan, mask, false);
+}
+
+void adc_hal_digi_stop(adc_hal_context_t *hal)
 {
     //Set to 0: the ADC data won't be sent to the DMA
     adc_ll_digi_dma_disable();
@@ -278,14 +306,6 @@ void adc_hal_digi_stop(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t
     adc_ll_digi_trigger_disable();
 }
 
-void adc_hal_digi_init(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config)
-{
-    adc_dma_ctx->dev = &GDMA;
-    gdma_ll_clear_interrupt_status(adc_dma_ctx->dev, dma_config->dma_chan, UINT32_MAX);
-    adc_ll_adc1_onetime_sample_enable(false);
-    adc_ll_adc2_onetime_sample_enable(false);
-}
-
 /*---------------------------------------------------------------
                     Single Read
 ---------------------------------------------------------------*/

components/hal/include/hal/adc_hal.h

@@ -4,6 +4,51 @@
 #include "hal/adc_types.h"
 #include "hal/adc_ll.h"
 
+#if CONFIG_IDF_TARGET_ESP32C3
+#include "soc/gdma_struct.h"
+#include "hal/gdma_ll.h"
+#include "hal/dma_types.h"
+#include "hal/adc_ll.h"
+#include "hal/dma_types.h"
+#include "esp_err.h"
+
+/**
+ * @brief Enum for DMA descriptor status
+ */
+typedef enum adc_hal_dma_desc_status_t{
+    ADC_DMA_DESC_FINISH     = 0,            ///< This DMA descriptor is written by HW already
+    ADC_DMA_DESC_NOT_FINISH = 1,            ///< This DMA descriptor is not written by HW yet
+    ADC_DMA_DESC_NULL       = 2             ///< This DMA descriptor is NULL
+} adc_hal_dma_desc_status_t;
+
+/**
+ * @brief Configuration of the HAL
+ */
+typedef struct adc_hal_config_t {
+    uint32_t            desc_max_num;       ///< Number of the descriptors linked once
+    uint32_t            dma_chan;           ///< DMA channel to be used
+    uint32_t            eof_num;            ///< Bytes between 2 in_suc_eof interrupts
+} adc_hal_config_t;
+
+/**
+ * @brief Context of the HAL
+ */
+typedef struct adc_hal_context_t {
+    /**< this needs to be malloced by the driver layer first */
+    dma_descriptor_t    *rx_desc;           ///< DMA descriptors
+
+    /**< these will be assigned by hal layer itself */
+    gdma_dev_t          *dev;               ///< GDMA address
+    dma_descriptor_t    desc_dummy_head;    ///< Dummy DMA descriptor for ``cur_desc_ptr`` to start
+    dma_descriptor_t    *cur_desc_ptr;      ///< Pointer to the current descriptor
+
+    /**< these need to be configured by `adc_hal_config_t` via driver layer*/
+    uint32_t            desc_max_num;       ///< Number of the descriptors linked once
+    uint32_t            dma_chan;           ///< DMA channel to be used
+    uint32_t            eof_num;            ///< Bytes between 2 in_suc_eof interrupts
+} adc_hal_context_t;
+#endif
+
 /*---------------------------------------------------------------
                     Common setting
 ---------------------------------------------------------------*/
@@ -252,44 +297,85 @@ uint32_t adc_hal_self_calibration(adc_ll_num_t adc_n, adc_channel_t channel, adc
 /*---------------------------------------------------------------
                     DMA setting
 ---------------------------------------------------------------*/
-#include "soc/gdma_struct.h"
+/**
-#include "hal/gdma_ll.h"
+ * @brief Initialize the hal context
-#include "hal/dma_types.h"
+ *
-#include "hal/adc_ll.h"
+ * @param hal    Context of the HAL
-#include "hal/dma_types.h"
+ * @param config Configuration of the HAL
-#include "esp_err.h"
+ */
+void adc_hal_context_config(adc_hal_context_t *hal, const adc_hal_config_t *config);
 
-typedef struct adc_dma_hal_context_t {
+/**
-    gdma_dev_t          *dev;           //address of the general DMA
+ * @brief Initialize the HW
-} adc_dma_hal_context_t;
+ *
+ * @param hal Context of the HAL
+ */
+void adc_hal_digi_init(adc_hal_context_t *hal);
 
-typedef struct adc_dma_hal_config_t {
+/**
-    dma_descriptor_t    *rx_desc;       //dma descriptor
+ * @brief Reset ADC / DMA fifo
-    dma_descriptor_t    *cur_desc_ptr;  //pointer to the current descriptor
+ *
-    uint32_t            desc_max_num;   //number of the descriptors linked once
+ * @param hal Context of the HAL
-    uint32_t            desc_cnt;
+ */
-    uint32_t            dma_chan;
+void adc_hal_fifo_reset(adc_hal_context_t *hal);
-} adc_dma_hal_config_t;
 
-void adc_hal_digi_dma_multi_descriptor(adc_dma_hal_config_t *dma_config, uint8_t *data_buf, uint32_t size, uint32_t num);
+/**
+ * @brief Start DMA
+ *
+ * @param hal      Context of the HAL
+ * @param data_buf Pointer to the data buffer
+ * @param size     Size of the buffer
+ */
+void adc_hal_digi_rxdma_start(adc_hal_context_t *hal, uint8_t *data_buf, uint32_t size);
 
-void adc_hal_digi_rxdma_start(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config);
+/**
+ * @brief Start ADC
+ *
+ * @param hal Context of the HAL
+ */
+void adc_hal_digi_start(adc_hal_context_t *hal);
 
-void adc_hal_digi_rxdma_stop(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config);
+/**
+ * @brief Get the ADC reading result
+ *
+ * @param      hal           Context of the HAL
+ * @param      eof_desc_addr The last descriptor that is finished by HW. Should be got from DMA
+ * @param[out] cur_desc      The descriptor with ADC reading result (from the 1st one to the last one (``eof_desc_addr``))
+ *
+ * @return                   See ``adc_hal_dma_desc_status_t``
+ */
+adc_hal_dma_desc_status_t adc_hal_get_reading_result(adc_hal_context_t *hal, const intptr_t eof_desc_addr, dma_descriptor_t **cur_desc);
 
-void adc_hal_digi_ena_intr(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config, uint32_t mask);
+/**
+ * @brief Stop DMA
+ *
+ * @param hal Context of the HAL
+ */
+void adc_hal_digi_rxdma_stop(adc_hal_context_t *hal);
 
-void adc_hal_digi_clr_intr(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config, uint32_t mask);
+/**
+ * @brief Clear interrupt
+ *
+ * @param hal  Context of the HAL
+ * @param mask mask of the interrupt
+ */
+void adc_hal_digi_clr_intr(adc_hal_context_t *hal, uint32_t mask);
 
-void adc_hal_digi_dis_intr(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config, uint32_t mask);
+/**
+ * @brief Enable interrupt
+ *
+ * @param hal  Context of the HAL
+ * @param mask mask of the interrupt
+ */
+void adc_hal_digi_dis_intr(adc_hal_context_t *hal, uint32_t mask);
 
-void adc_hal_digi_set_eof_num(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config, uint32_t num);
+/**
+ * @brief Stop ADC
+ *
+ * @param hal Context of the HAL
+ */
+void adc_hal_digi_stop(adc_hal_context_t *hal);
 
-void adc_hal_digi_start(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config);
-
-void adc_hal_digi_stop(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config);
-
-void adc_hal_digi_init(adc_dma_hal_context_t *adc_dma_ctx, adc_dma_hal_config_t *dma_config);
 
 /*---------------------------------------------------------------
                     Single Read