ESP32C3 I2S驱动支持回调函数获取数据吗
ESP32C3 I2S驱动支持回调函数获取数据吗
目前I2S驱动只看到i2s_read接口获取数据,但这是polling方式的。是否有注册回调函数,当数据到达是调用回头函数通知上层app?
Re: ESP32C3 I2S驱动支持回调函数获取数据吗
E (21287) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21297) AUDIO_RECORDER: network send -1
I (21297) AA: 640
E (21297) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21317) AUDIO_RECORDER: network send -1
I (21317) AA: 640
E (21317) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21327) AUDIO_RECORDER: network send -1
I (21327) AA: 640
E (21327) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21347) AUDIO_RECORDER: network send -1
I (21347) AA: 640
E (21347) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21357) AUDIO_RECORDER: network send -1
设置i2s参数的dma buffer大小是10ms的16khz 16bit stereo数据,个数为4. 但实际轮询读取时发现时间有跳跃,绝大多少是10ms一个640字节的数据,但有时是20ms才读取到640字节。这里就丢失了10ms的数据了。
I (21297) AUDIO_RECORDER: network send -1
I (21297) AA: 640
E (21297) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21317) AUDIO_RECORDER: network send -1
I (21317) AA: 640
E (21317) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21327) AUDIO_RECORDER: network send -1
I (21327) AA: 640
E (21327) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21347) AUDIO_RECORDER: network send -1
I (21347) AA: 640
E (21347) AUDIO_TOOLS: stereo2mono_16k16b buffer too small: 640 4
I (21357) AUDIO_RECORDER: network send -1
设置i2s参数的dma buffer大小是10ms的16khz 16bit stereo数据,个数为4. 但实际轮询读取时发现时间有跳跃,绝大多少是10ms一个640字节的数据,但有时是20ms才读取到640字节。这里就丢失了10ms的数据了。
Re: ESP32C3 I2S驱动支持回调函数获取数据吗
目前I2S驱动只看到i2s_read接口获取数据,但这是polling方式的。
--你好,这个i2s的接口在哪儿啊?相关的buffer和函数可以贴一下吗?谢谢
--你好,这个i2s的接口在哪儿啊?相关的buffer和函数可以贴一下吗?谢谢
-
- Posts: 184
- Joined: Fri Dec 15, 2017 2:45 am
Re: ESP32C3 I2S驱动支持回调函数获取数据吗
????
Code: Select all
/**
* @brief Read data from I2S DMA receive buffer
* @note If the built-in ADC mode is enabled, we should call i2s_adc_enable and i2s_adc_disable around the whole reading process,
* to prevent the data getting corrupted.
*
* @param i2s_num I2S device number
* @param dest Destination address to read into
* @param size Size of data in bytes
* @param[out] bytes_read Number of bytes read, if timeout, bytes read will be less than the size passed in.
* @param ticks_to_wait RX buffer wait timeout in RTOS ticks. If this many ticks pass without bytes becoming available in the DMA receive buffer, then the function will return (note that if data is read from the DMA buffer in pieces, the overall operation may still take longer than this timeout.) Pass portMAX_DELAY for no timeout.
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG Parameter error
*/
esp_err_t i2s_read(i2s_port_t i2s_num, void *dest, size_t size, size_t *bytes_read, TickType_t ticks_to_wait)
{
char *data_ptr, *dest_byte;
int bytes_can_read;
*bytes_read = 0;
dest_byte = (char *)dest;
ESP_RETURN_ON_FALSE((i2s_num < I2S_NUM_MAX), ESP_ERR_INVALID_ARG, TAG, "i2s_num error");
ESP_RETURN_ON_FALSE((p_i2s[i2s_num]->rx), ESP_ERR_INVALID_ARG, TAG, "RX mode is not enabled");
xSemaphoreTake(p_i2s[i2s_num]->rx->mux, (portTickType)portMAX_DELAY);
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_acquire(p_i2s[i2s_num]->pm_lock);
#endif
while (size > 0) {
if (p_i2s[i2s_num]->rx->rw_pos == p_i2s[i2s_num]->rx->buf_size || p_i2s[i2s_num]->rx->curr_ptr == NULL) {
if (xQueueReceive(p_i2s[i2s_num]->rx->queue, &p_i2s[i2s_num]->rx->curr_ptr, ticks_to_wait) == pdFALSE) {
break;
}
p_i2s[i2s_num]->rx->rw_pos = 0;
}
data_ptr = (char *)p_i2s[i2s_num]->rx->curr_ptr;
data_ptr += p_i2s[i2s_num]->rx->rw_pos;
bytes_can_read = p_i2s[i2s_num]->rx->buf_size - p_i2s[i2s_num]->rx->rw_pos;
if (bytes_can_read > (int)size) {
bytes_can_read = size;
}
memcpy(dest_byte, data_ptr, bytes_can_read);
size -= bytes_can_read;
dest_byte += bytes_can_read;
p_i2s[i2s_num]->rx->rw_pos += bytes_can_read;
(*bytes_read) += bytes_can_read;
}
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_release(p_i2s[i2s_num]->pm_lock);
#endif
xSemaphoreGive(p_i2s[i2s_num]->rx->mux);
return ESP_OK;
}
Who is online
Users browsing this forum: No registered users and 20 guests