如果i2s_write_bytes 是一个库函数或第三方库提供的函数,你需要确保已经包含了定义该函数的头文件。例如,如果该函数定义在 i2s_lib.h 中,你需要在你的源文件中包含这个头文件: cpp #include "i2s_lib.h" 验证编译器是否支持或能够找到该函数所在的库: 如果i2s_write_bytes 是某个特定库的一部分,你需要确保...
WM8978_I2C_WriteRegister用于向WM8978芯片寄存器写入数值,达到配置芯片工作环境,函数有两个形参,一个是寄存器地址,可设置范围为0~57;另外一个是寄存器值,WM8978芯片寄存器总共有16bit,前7bit用于寻址,后9位才是数据,这里寄存器值形参使用uint16_t类型,只有低9位有效。 使用I2C通信,首先使用I2C_Send7bitAddress函数...
Normally, the i2c_write_bytes function blocks. You can just start up a thread that writes bytes as fast as it can using that function, and the blocking behaviour will make sure the timing is OK. Also, yes, I think the current behaviour of the I2S-driver is to repeat the last sample...
esp_err_ti2s_driver_uninstall(i2s_port_ti2s_num) 下面这个函数用来向DMA写数据,但是这个函数可能被官方取消,以后用I2S_write来取代: inti2s_write_bytes(i2s_port_ti2s_num,constvoid *src, size_tsize, TickType_tticks_to_wait) esp_err_ti2s_write(i2s_port_ti2s_num,constvoid *src, size_tsize...
{"write_flash_args":["--flash_mode","dio","--flash_size","detect","--flash_freq","80m"],"flash_settings":{"flash_mode":"dio","flash_size":"detect","flash_freq":"80m"},"flash_files":{"0x0":"bootloader/bootloader.bin","0x10000":"hello-world.bin","0x8000":"partition_table...
* @param pDesc A pointer to a I2S_BufDesc pointer. * * @return Returns the number of bytes that have been written to the I2S, * 0 on timeout. */ extern size_t I2S_writeReclaim(I2S_Handle handle, I2S_BufDesc **pDesc); 这些读写驱动,...
\n", i2s_bytes_write); } vTaskDelay(500 / portTICK_RATE_MS); } } static void i2s_recv(void *args) { uint16_t *read_data = malloc(I2S_BUFF_SIZE); if (!read_data) { ESP_LOGE(TAG, "No memory for read data buffer"); } size_t i2s_bytes_read = 0; while (1) { memset(...
CNend** @retval #>=0 Number of bytes that are actually read.CNcomment:实际读到数据的字节数。CNend* @retval #HI_ERR_FAILURE Data read error.CNcomment:读数据失败。CNend* @par 依赖:* @li hi_uart.h:Describes UART APIs.CNcomment:UART相关接口。CNend* @see hi_uart_write。*/hi_s32hi_...
written += i2s_write_bytes(outputPortNum, &buffer[written], size - written, portMAX_DELAY); } Apologies if the code isn't super clear, I've been moving things around / playing to try and resolve the crackling. The task loop relays audio, if any has been sent through. If it hasn'...
if (bytes_write > 0) { ESP_LOGI(TAG, "[music] i2s music played, %d bytes are written.", bytes_write); } else { ESP_LOGE(TAG, "[music] i2s music play falied."); abort(); } vTaskDelay(1000 / portTICK_PERIOD_MS); }