编译i2s_es8311使用echo回环播放没有声音是怎么回事？

I (257) cpu_start: ELF file SHA256:  3ba37c9ca1df85ac...

I (263) cpu_start: ESP-IDF:          v4.4.1-472-gc9140caf8c-dirty

I (270) heap_init: Initializing. RAM available for dynamic allocation:

I (277) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM

I (283) heap_init: At 3FFB2CD0 len 0002D330 (180 KiB): DRAM

I (290) heap_init: At 3FFE0440 len 00003AE0 (14 KiB): D/IRAM

I (296) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM

I (302) heap_init: At 4008CDA0 len 00013260 (76 KiB): IRAM

I (310) spi_flash: detected chip: gd

I (313) spi_flash: flash io: dio

W (317) spi_flash: Detected size(8192k) larger than the size in the binary image header(2048k). Using the size in the binary image header.

I (331) cpu_start: Starting scheduler on PRO CPU.

I (0) cpu_start: Starting scheduler on APP CPU.

I (342) I2S: DMA Malloc info, datalen=blocksize=256, dma_buf_count=8

I (352) I2S: DMA Malloc info, datalen=blocksize=256, dma_buf_count=8

I (352) I2S: I2S0, MCLK output by GPIO0

I (382) ES8311: ES8311 in Slave mode and I2S format

I (392) i2s_es8311: [echo] Echo start