ESP32C3 I2S Slave模式读取数据错误的原因？

i2s配置成slave ，tx/rx双工,具体参数如下，接收到的数据有错误。

I (43837) U_I2S: mode: 14

I (43837) U_I2S: sample_rate: 16000

I (43837) U_I2S: bits_per_sample: 16

I (43847) U_I2S: channel_format: 2

I (43847) U_I2S: communication_format: 1

I (43857) U_I2S: dma_buf_count: 4

I (43857) U_I2S: dma_buf_len: 1024

I (43857) U_I2S: use_apll: 1

I (43867) U_I2S: bck_io 6

I (43867) U_I2S: ws_io_num 5

I (43877) U_I2S: data_out_num 1

I (43877) U_I2S: data_in_num 0

I (43877) I2S: DMA Malloc info, datalen=blocksize=4092, dma_buf_count=4

I (43887) I2S: DMA Malloc info, datalen=blocksize=4092, dma_buf_count=4

I (43897) U_I2S: i2s_driver_install ret: 0

I (43897) I2S: set  ws/bck io rx

I (43907) U_I2S: i2s_set_pin ret: 0

I (43907) U_I2S: i2s_set_sample_rates ret: 0

I (43907) U_I2S: u_i2s_init return 0



Codec 在左右channel上报固定数据 0x11,0x22, 0x33,0x44 和 0xaa 0xbb 0xcc 0xdd。app调用i2s_read读取数据，但是只有部分数据是正确的，绝大多少都是错误数据。



err = i2s_read(CONFIG_I2S_PORT, pbuf, in_len, &out_len, portMAX_DELAY);



测试了几种参数，无论是读取32/320/640字节，都是同样情况，只有头部部分数据正确。log如下



读取32字节

I (46547) AUDIO_RECORDER: 32: 1 80 22 11 bb aa dd cc

I (46547) AUDIO_RECORDER: 32: fc 7 c4 2 7 0 0 0

I (46557) AUDIO_RECORDER: 32: 0 0 0 0 0 0 0 0

I (46557) AUDIO_RECORDER: 32: 39 1 8 82 84 8b 96 24

I (46567) AUDIO_RECORDER: 64: 22 11 44 33 bb aa dd cc

I (46567) AUDIO_RECORDER: 64: fc 7 c4 2 7 0 0 0

I (46577) AUDIO_RECORDER: 64: 0 0 0 0 0 0 0 0

I (46577) AUDIO_RECORDER: 64: 39 1 8 82 84 8b 96 24

I (46587) AUDIO_RECORDER: 96: 22 11 44 33 bb aa dd cc

I (46587) AUDIO_RECORDER: 96: fc 7 c4 2 7 0 0 0

I (46597) AUDIO_RECORDER: 96: 0 0 0 0 0 0 0 0

I (46607) AUDIO_RECORDER: 96: 39 1 8 82 84 8b 96 24

I (46607) AUDIO_RECORDER: 128: 22 11 44 33 bb aa dd cc

I (46617) AUDIO_RECORDER: 128: fc 7 c4 2 7 0 0 0

I (46617) AUDIO_RECORDER: 128: 0 0 0 0 0 0 0 0

I (46627) AUDIO_RECORDER: 128: 39 1 8 82 84 8b 96 24

I (46627) AUDIO_RECORDER: 160: 22 11 44 33 bb aa dd cc

I (46637) AUDIO_RECORDER: 160: fc 7 c4 2 7 0 0 0

I (46637) AUDIO_RECORDER: 160: 0 0 0 0 0 0 0 0

I (46647) AUDIO_RECORDER: 160: 39 1 8 82 84 8b 96 24

I (46647) AUDIO_RECORDER: 192: 22 11 44 33 bb aa dd cc

I (46657) AUDIO_RECORDER: 192: fc 7 c4 2 7 0 0 0

I (46667) AUDIO_RECORDER: 192: 0 0 0 0 0 0 0 0

I (46667) AUDIO_RECORDER: 192: 39 1 8 82 84 8b 96 24

I (46677) AUDIO_RECORDER: 224: 22 11 44 33 bb aa dd cc

I (46677) AUDIO_RECORDER: 224: fc 7 c4 2 7 0 0 0

I (46687) AUDIO_RECORDER: 224: 0 0 0 0 0 0 0 0

I (46687) AUDIO_RECORDER: 224: 39 1 8 82 84 8b 96 24

I (46697) AUDIO_RECORDER: 256: 22 11 44 33 bb aa dd cc

I (46697) AUDIO_RECORDER: 256: fc 7 c4 2 7 0 0 0

I (46707) AUDIO_RECORDER: 256: 0 0 0 0 0 0 0 0





读取640字节

I (44027) AUDIO_RECORDER: 640: 1 70 22 11 bb aa dd cc

I (44027) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44037) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44047) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44047) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44057) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44057) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44067) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44067) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44077) AUDIO_RECORDER: 640: 22 11 44 33 bb aa dd cc

I (44087) AUDIO_RECORDER: 640: e9 1c 1 0 14 0 cc 3f

I (44087) AUDIO_RECORDER: 640: 0 1 0 0 71 76 a0 2

I (44097) AUDIO_RECORDER: 640: 0 0 0 76 0 0 0 0

I (44097) AUDIO_RECORDER: 640: 61 72 32 2d e8 ae bf e5

I (44107) AUDIO_RECORDER: 640: 18 0 3d 16 b 7 4 0

I (44107) AUDIO_RECORDER: 640: 0 0 c0 5 0 0 0 c0

I (44117) AUDIO_RECORDER: 640: 0 0 0 0 0 dd 6 0

I (44117) AUDIO_RECORDER: 640: 3 a4 0 0 27 a4 0 0

I (44127) AUDIO_RECORDER: 640: 0 dd 9 0 3 7f 1 1

I (44127) AUDIO_RECORDER: 640: a0 f3 3b 98 c9 67 16 5

I (44137) AUDIO_RECORDER: 640: e2 c 1b a4 3c 94 9b 5d

I (44147) AUDIO_RECORDER: 640: e3 ff dd c af e2 4 7a

I (44147) AUDIO_RECORDER: 640: 84 7e 50 c6 fb e9 23 a1

I (44157) AUDIO_RECORDER: 640: 84 6a 5f c9 a1 52 20 8

I (44157) AUDIO_RECORDER: 640: ce 7d d4 84 bd 7b e2 bf

I (44167) AUDIO_RECORDER: 640: 1e 2f 0 61 17 fe 5e 23

I (44167) AUDIO_RECORDER: 640: f7 82 86 26 e2 6c 38 17

I (44177) AUDIO_RECORDER: 640: d2 4e 38 fb a7 89 53 d8

I (44187) AUDIO_RECORDER: 640: 1e 50 ca 0 14 65 88 7d

I (44187) AUDIO_RECORDER: 640: c7 19 b0 bf 45 e4 3 7c

I (44197) AUDIO_RECORDER: 640: 7e 24 9a 85 19 9f 68 91

I (44197) AUDIO_RECORDER: 640: d1 20 2b dc 25 7c 7e e

I (44207) AUDIO_RECORDER: 640: a5 e 66 3c e5 80 d 64

I (44207) AUDIO_RECORDER: 640: f 3b e0 97 67 40 9d 5d

I (44217) AUDIO_RECORDER: 640: 5 93 69 0 8e 50 b3 9e

I (44227) AUDIO_RECORDER: 640: d aa a0 df 95 a8 31 4c

I (44227) AUDIO_RECORDER: 640: 44 78 9 b6 c2 e8 c1 aa

I (44237) AUDIO_RECORDER: 640: ed c9 61 59 c0 de 80 6f

I (44237) AUDIO_RECORDER: 640: b 8d bd 2d e4 a9 8a d0

I (44247) AUDIO_RECORDER: 640: 17 e1 14 14 13 2a 2d df

I (44257) AUDIO_RECORDER: 640: 1e 2a 4b be 98 d7 9c 7d

I (44257) AUDIO_RECORDER: 640: e5 6c 8 b6 6e 5d 25 2d

I (44267) AUDIO_RECORDER: 640: 9d 5d 11 ea 28 de 93 15

I (44267) AUDIO_RECORDER: 640: af 4 e0 69 bf c9 43 8e

I (44277) AUDIO_RECORDER: 640: bd c5 ff cc f4 a7 15 5b

I (44277) AUDIO_RECORDER: 640: a3 15 64 72 7b eb 7a b5

I (44287) AUDIO_RECORDER: 640: 34 56 ac df e8 5d 4c 5e

I (44297) AUDIO_RECORDER: 640: e6 d4 b3 4 3c 5b ab 75

I (44297) AUDIO_RECORDER: 640: d0 61 ee b9 79 4 de 34

I (44307) AUDIO_RECORDER: 640: b9 7f 44 f3 b5 49 49 c

I (44307) AUDIO_RECORDER: 640: 6c c2 a 38 b8 fc 9b 2e

I (44317) AUDIO_RECORDER: 640: 7e dd c3 86 71 89 e1 3e

I (44317) AUDIO_RECORDER: 640: 3c d1 90 f0 62 6 fe 53

I (44327) AUDIO_RECORDER: 640: e0 5 1f d1 2a 7 2f 2b

I (44337) AUDIO_RECORDER: 640: 3b 88 69 96 f4 a3 6a dc

I (44337) AUDIO_RECORDER: 640: 26 fd 52 29 a0 2b a9 e0

I (44347) AUDIO_RECORDER: 640: d 6 cd d6 65 4a f4 2e

I (44347) AUDIO_RECORDER: 640: 51 14 92 5b df 81 1c 20

I (44357) AUDIO_RECORDER: 640: 1c 33 c2 c6 2d f7 c5 a4

I (44357) AUDIO_RECORDER: 640: 15 f6 7b e0 2f bb 1b e6

I (44367) AUDIO_RECORDER: 640: 5d ae 76 7f c9 d6 c9 6

I (44377) AUDIO_RECORDER: 640: 97 20 c3 ff e7 80 40 32

I (44377) AUDIO_RECORDER: 640: 1 45 29 20 b2 45 8 8

I (44387) AUDIO_RECORDER: 640: b1 47 1 47 8d 46 5 46

I (44387) AUDIO_RECORDER: 640: e7 a 3 a7 c7 a b7 6

I (44397) AUDIO_RECORDER: 640: 2d 2a 31 26 21 26 e1 22

I (44397) AUDIO_RECORDER: 640: 89 e 97 20 c3 ff e7 80

I (44407) AUDIO_RECORDER: 640: 8 41 13 7 0 10 85 66

I (44417) AUDIO_RECORDER: 640: 85 c3 ef 20 20 21 37 76

I (44417) AUDIO_RECORDER: 640: f2 40 62 44 26 85 42 49

I (44427) AUDIO_RECORDER: 640: 97 20 c3 ff e7 80 40 e1

I (44427) AUDIO_RECORDER: 640: 37 7 e8 ff 7d 17 79 8d

I (44437) AUDIO_RECORDER: 640: e7 80 c0 d2 b1 47 e3 19

I (44437) AUDIO_RECORDER: 640: 5 0 17 23 c3 ff 67 0

I (44447) AUDIO_RECORDER: 640: 7d 55 b2 40 41 1 82 80

I (44457) AUDIO_RECORDER: 640: ef 30 70 3a 81 45 a 85

I (44457) AUDIO_RECORDER: 640: c3 ff e7 80 e0 4b 2a 86

I (44467) AUDIO_RECORDER: 640: f2 40 62 44 5 61 82 80

I (44467) AUDIO_RECORDER: 640: 1 46 81 45 13 5 f0 9

I (44477) AUDIO_RECORDER: 640: 6 3a b7 7 0 a 73 90

I (44477) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44487) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44497) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44497) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44507) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44507) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44517) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44527) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44527) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44537) AUDIO_RECORDER: 1280: 22 11 44 33 bb aa dd cc

I (44537) AUDIO_RECORDER: 1280: e9 1c 1 0 14 0 cc 3f

I (44547) AUDIO_RECORDER: 1280: 0 1 0 0 e8 ae a6 2

I (44547) AUDIO_RECORDER: 1280: 0 0 10 7f 0 0 0 0

I (44557) AUDIO_RECORDER: 1280: 61 72 32 2d e8 ae bf e5

I (44567) AUDIO_RECORDER: 1280: 18 0 3d 16 b 7 4 0

I (44567) AUDIO_RECORDER: 1280: 0 0 c0 5 0 0 0 c0

I (44577) AUDIO_RECORDER: 1280: 0 0 0 0 0 dd 6 0

I (44577) AUDIO_RECORDER: 1280: 0 0 27 a4 0 0 42 43

I (44587) AUDIO_RECORDER: 1280: 0 dd 9 0 3 7f 1 1

I (44587) AUDIO_RECORDER: 1280: a0 f3 3b 98 c9 67 16 5

I (44597) AUDIO_RECORDER: 1280: e2 c 1b a4 3c 94 9b 5d

I (44597) AUDIO_RECORDER: 1280: e3 ff dd c af e2 4 7a

I (44607) AUDIO_RECORDER: 1280: 84 7e 50 c6 fb e9 23 a1

I (44617) AUDIO_RECORDER: 1280: 84 6a 5f c9 a1 52 20 8

I (44617) AUDIO_RECORDER: 1280: ce 7d d4 84 bd 7b e2 bf

I (44627) AUDIO_RECORDER: 1280: 1e 2f 0 61 17 fe 5e 23

I (44627) AUDIO_RECORDER: 1280: f7 82 86 26 e2 6c 38 17

I (44637) AUDIO_RECORDER: 1280: d2 4e 38 fb a7 89 53 d8

I (44647) AUDIO_RECORDER: 1280: 1e 50 ca 0 14 65 88 7d

I (44647) AUDIO_RECORDER: 1280: c7 19 b0 bf 45 e4 3 7c

I (44657) AUDIO_RECORDER: 1280: 7e 24 9a 85 19 9f 68 91

I (44657) AUDIO_RECORDER: 1280: d1 20 2b dc 25 7c 7e e

I (44667) AUDIO_RECORDER: 1280: a5 e 66 3c e5 80 d 64

I (44667) AUDIO_RECORDER: 1280: f 3b e0 97 67 40 9d 5d

I (44677) AUDIO_RECORDER: 1280: 5 93 69 0 8e 50 b3 9e

I (44687) AUDIO_RECORDER: 1280: d aa a0 df 95 a8 31 4c

I (44687) AUDIO_RECORDER: 1280: 44 78 9 b6 c2 e8 c1 aa

I (44697) AUDIO_RECORDER: 1280: ed c9 61 59 c0 de 80 6f

I (44697) AUDIO_RECORDER: 1280: b 8d bd 2d e4 a9 8a d0

I (44707) AUDIO_RECORDER: 1280: 17 e1 14 14 13 2a 2d df

I (44717) AUDIO_RECORDER: 1280: 1e 2a 4b be 98 d7 9c 7d