jpmschweitzerandClaude Fable 5
cb5826e02b
Root cause (verified against our exact IDF tree, not the community guess): the "258" in "sdio_write_task: Failed to send data: 258" is NOT a timeout (that is 263). 258 = 0x102 = ESP_ERR_INVALID_ARG. On the ESP32-P4, block- mode CMD53 writes require the SOURCE buffer to be 64-byte (cache-line) aligned; the IDF sdmmc driver rejects a misaligned source with INVALID_ARG BEFORE any bus activity. esp_hosts write loop then declares "Unrecoverable host sdio state" and reboots the whole P4. The audio TX payload is not 64-aligned, so streaming mic audio wedged on the very FIRST frame (which is exactly what we saw: listening -> instant Failed to send -> reboot). This also explains why buffer/queue/clock/retry tuning all did nothing: the write never reached the bus. And why our symptom was instant, not after ~100 writes (the community block-mode-desync theory) — it is the first misaligned buffer, every time. Fix: vendored esp_hosted 2.12.11 as an editable local component (overrides the registry copy) and bounce a misaligned TX payload through one aligned DMA scratch buffer in hosted_sdio_write_block (port_esp_hosted_host_sdio.c). TX is serialized by the bus lock so a single static bounce buffer is safe; freed in hosted_sdio_deinit. Host-only change — no C6 reflash. VERIFIED ON HARDWARE (autonomous self-test): 40s of continuous mic-audio upstream streaming — the traffic that previously wedged on the first frame — ran clean, zero timeouts, zero reboots. A guarded SDIO_TX_SELFTEST harness is kept (compiled out) for future SDIO stress testing. Credit: root cause + patch designed via multi-agent investigation; the precise 258=INVALID_ARG decode (correcting the upstream community timeout assumption) came from checking our actual esp_err.h. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
31 lines
991 B
C
31 lines
991 B
C
#include <stdlib.h>
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#include <string.h>
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#include "t/issue440/issue440.pb-c.h"
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int main(void)
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{
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/* Output of $ echo "int: 1 int: -142342 int: 0 int: 423423222" | \
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* protoc issue440.proto --encode=Int | xxd -i:
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* 0x0a, 0x11, 0x01, 0xfa, 0xa7, 0xf7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
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* 0x01, 0x00, 0xf6, 0xd9, 0xf3, 0xc9, 0x01
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*
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* Output of $ echo "int: 1 int: -142342 int: 0 int: 423423222" | \
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* protoc issue440.proto --encode=Int | protoc issue440.proto \
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* --decode=Boolean: boolean: true boolean: true boolean: false boolean: true
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*/
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uint8_t protoc[] = {0x0a, 0x11, 0x01, 0xfa, 0xa7, 0xf7, 0xff, 0xff,
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0xff, 0xff, 0xff, 0xff, 0x01, 0x00, 0xf6, 0xd9, 0xf3, 0xc9,
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0x01};
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Boolean *msg = boolean__unpack (NULL, sizeof protoc, protoc);
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assert(msg);
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assert(msg->n_boolean == 4);
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assert(msg->boolean[0] == 1);
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assert(msg->boolean[1] == 1);
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assert(msg->boolean[2] == 0);
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assert(msg->boolean[3] == 1);
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boolean__free_unpacked (msg, NULL);
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return EXIT_SUCCESS;
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}
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