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adc: fix adc continuous driver conv_frame_size not bigger than 4092 issue

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This commit is contained in:
Armando 2023-09-05 11:18:52 +08:00
parent 4f0f7ba4b7
commit 91da3bcdc1
4 changed files with 64 additions and 24 deletions
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14
components/driver/adc.c
View File

@ -176,7 +176,9 @@ esp_err_t adc_digi_initialize(const adc_digi_init_config_t *init_config)
}
//malloc dma descriptor
s_adc_digi_ctx->hal.rx_desc = heap_caps_calloc(1, (sizeof(dma_descriptor_t)) * INTERNAL_BUF_NUM, MALLOC_CAP_DMA);
uint32_t dma_desc_num_per_frame = (init_config->conv_num_each_intr + DMA_DESCRIPTOR_BUFFER_MAX_SIZE_4B_ALIGNED - 1) / DMA_DESCRIPTOR_BUFFER_MAX_SIZE_4B_ALIGNED;
uint32_t dma_desc_max_num = dma_desc_num_per_frame * INTERNAL_BUF_NUM;
s_adc_digi_ctx->hal.rx_desc = heap_caps_calloc(1, (sizeof(dma_descriptor_t)) * dma_desc_max_num, MALLOC_CAP_DMA);
if (!s_adc_digi_ctx->hal.rx_desc) {
ret = ESP_ERR_NO_MEM;
goto cleanup;
@ -279,7 +281,8 @@ esp_err_t adc_digi_initialize(const adc_digi_init_config_t *init_config)
#elif CONFIG_IDF_TARGET_ESP32
.dev = (void *)I2S_LL_GET_HW(s_adc_digi_ctx->i2s_host),
#endif
.desc_max_num = INTERNAL_BUF_NUM,
.eof_desc_num = INTERNAL_BUF_NUM,
.eof_step = dma_desc_num_per_frame,
.dma_chan = dma_chan,
.eof_num = init_config->conv_num_each_intr / SOC_ADC_DIGI_DATA_BYTES_PER_CONV
};
@ -336,15 +339,16 @@ static IRAM_ATTR bool s_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;
uint8_t *finished_buffer = NULL;
uint32_t finished_size = 0;
while (1) {
status = adc_hal_get_reading_result(&adc_digi_ctx->hal, adc_digi_ctx->rx_eof_desc_addr, &current_desc);
status = adc_hal_get_reading_result(&adc_digi_ctx->hal, adc_digi_ctx->rx_eof_desc_addr, &finished_buffer, &finished_size);
if (status != ADC_HAL_DMA_DESC_VALID) {
break;
}
ret = xRingbufferSendFromISR(adc_digi_ctx->ringbuf_hdl, current_desc->buffer, current_desc->dw0.length, &taskAwoken);
ret = xRingbufferSendFromISR(adc_digi_ctx->ringbuf_hdl, finished_buffer, finished_size, &taskAwoken);
if (ret == pdFALSE) {
//ringbuffer overflow
adc_digi_ctx->ringbuf_overflow_flag = 1;

62
components/hal/adc_hal.c
View File

@ -303,7 +303,8 @@ void adc_hal_context_config(adc_hal_context_t *hal, const adc_hal_config_t *conf
{
hal->desc_dummy_head.next = hal->rx_desc;
hal->dev = config->dev;
hal->desc_max_num = config->desc_max_num;
hal->eof_desc_num = config->eof_desc_num;
hal->eof_step = config->eof_step;
hal->dma_chan = config->dma_chan;
hal->eof_num = config->eof_num;
}
@ -325,23 +326,33 @@ void adc_hal_digi_init(adc_hal_context_t *hal)
#endif
}
static void adc_hal_digi_dma_link_descriptors(dma_descriptor_t *desc, uint8_t *data_buf, uint32_t size, uint32_t num)
static void adc_hal_digi_dma_link_descriptors(dma_descriptor_t *desc, uint8_t *data_buf, uint32_t per_eof_size, uint32_t eof_step, uint32_t eof_num)
{
HAL_ASSERT(((uint32_t)data_buf % 4) == 0);
HAL_ASSERT((size % 4) == 0);
HAL_ASSERT((per_eof_size % 4) == 0);
uint32_t n = 0;
while (num--) {
desc[n] = (dma_descriptor_t) {
.dw0.size = size,
.dw0.length = 0,
.dw0.suc_eof = 0,
.dw0.owner = 1,
.buffer = data_buf,
.next = &desc[n+1]
};
data_buf += size;
n++;
while (eof_num--) {
uint32_t eof_size = per_eof_size;
for (int i = 0; i < eof_step; i++) {
uint32_t this_len = eof_size;
if (this_len > DMA_DESCRIPTOR_BUFFER_MAX_SIZE_4B_ALIGNED) {
this_len = DMA_DESCRIPTOR_BUFFER_MAX_SIZE_4B_ALIGNED;
}
desc[n] = (dma_descriptor_t) {
.dw0.size = this_len,
.dw0.length = 0,
.dw0.suc_eof = 0,
.dw0.owner = 1,
.buffer = data_buf,
.next = &desc[n+1]
};
eof_size -= this_len;
data_buf += this_len;
n++;
}
}
desc[n-1].next = NULL;
}
@ -380,12 +391,14 @@ bool adc_hal_check_event(adc_hal_context_t *hal, uint32_t mask)
}
#endif //#if !SOC_GDMA_SUPPORTED
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)
adc_hal_dma_desc_status_t adc_hal_get_reading_result(adc_hal_dma_ctx_t *hal, const intptr_t eof_desc_addr, uint8_t **buffer, uint32_t *len)
{
HAL_ASSERT(hal->cur_desc_ptr);
if (!hal->cur_desc_ptr->next) {
return ADC_HAL_DMA_DESC_NULL;
}
if ((intptr_t)hal->cur_desc_ptr == eof_desc_addr) {
return ADC_HAL_DMA_DESC_WAITING;
}
@ -393,6 +406,25 @@ adc_hal_dma_desc_status_t adc_hal_get_reading_result(adc_hal_context_t *hal, con
hal->cur_desc_ptr = hal->cur_desc_ptr->next;
*cur_desc = hal->cur_desc_ptr;
uint8_t *buffer_start = NULL;
uint32_t eof_len = 0;
dma_descriptor_t *eof_desc = hal->cur_desc_ptr;
//Find the eof list start
eof_desc = eof_desc->next;
buffer_start = eof_desc->buffer;
eof_len += eof_desc->dw0.length;
//Find the eof list end
for (int i = 1; i < hal->eof_step; i++) {
eof_desc = eof_desc->next;
eof_len += eof_desc->dw0.length;
}
hal->cur_desc_ptr = eof_desc;
*buffer = buffer_start;
*len = eof_len;
return ADC_HAL_DMA_DESC_VALID;
}

11
components/hal/include/hal/adc_hal.h
View File

@ -57,7 +57,8 @@ typedef enum adc_hal_dma_desc_status_t {
*/
typedef struct adc_hal_config_t {
void *dev; ///< DMA peripheral address
uint32_t desc_max_num; ///< Number of the descriptors linked once
uint32_t eof_desc_num; ///< Number of dma descriptors that is eof
uint32_t eof_step; ///< Number of linked descriptors that is one eof
uint32_t dma_chan; ///< DMA channel to be used
uint32_t eof_num; ///< Bytes between 2 in_suc_eof interrupts
} adc_hal_config_t;
@ -75,7 +76,8 @@ typedef struct adc_hal_context_t {
/**< these need to be configured by `adc_hal_config_t` via driver layer*/
void *dev; ///< DMA address
uint32_t desc_max_num; ///< Number of the descriptors linked once
uint32_t eof_desc_num; ///< Number of dma descriptors that is eof
uint32_t eof_step; ///< Number of linked descriptors that is one eof
uint32_t dma_chan; ///< DMA channel to be used
uint32_t eof_num; ///< Words between 2 in_suc_eof interrupts
} adc_hal_context_t;
@ -217,11 +219,12 @@ bool adc_hal_check_event(adc_hal_context_t *hal, uint32_t mask);
*
* @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``))
* @param[out] buffer ADC reading result buffer
* @param[out] len ADC reading result len
*
* @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);
adc_hal_dma_desc_status_t adc_hal_get_reading_result(adc_hal_dma_ctx_t *hal, const intptr_t eof_desc_addr, uint8_t **buffer, uint32_t *len);
/**
* @brief Clear interrupt

1
components/hal/include/hal/dma_types.h
View File

@ -44,6 +44,7 @@ ESP_STATIC_ASSERT(sizeof(dma_descriptor_t) == 12, "dma_descriptor_t should occup
#define DMA_DESCRIPTOR_BUFFER_OWNER_CPU (0) /*!< DMA buffer is allowed to be accessed by CPU */
#define DMA_DESCRIPTOR_BUFFER_OWNER_DMA (1) /*!< DMA buffer is allowed to be accessed by DMA engine */
#define DMA_DESCRIPTOR_BUFFER_MAX_SIZE (4095) /*!< Maximum size of the buffer that can be attached to descriptor */
#define DMA_DESCRIPTOR_BUFFER_MAX_SIZE_4B_ALIGNED (4095-3) /*!< Maximum size of the buffer that can be attached to descriptor, and aligned to 4B */
#ifdef __cplusplus
}