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>
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
#ifdef PROTO3
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#include "t/test-proto3.pb-c.h"
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#else
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#include "t/test.pb-c.h"
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#endif
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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int main(void)
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{
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Foo__Person__PhoneNumber__Comment comment = FOO__PERSON__PHONE_NUMBER__COMMENT__INIT;
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Foo__Person__PhoneNumber phone = FOO__PERSON__PHONE_NUMBER__INIT;
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Foo__Person__PhoneNumber *phone_numbers[1];
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Foo__Person person = FOO__PERSON__INIT;
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Foo__Person *person2;
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unsigned char simple_pad[8];
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size_t size, size2;
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unsigned char *packed;
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ProtobufCBufferSimple bs = PROTOBUF_C_BUFFER_SIMPLE_INIT (simple_pad);
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comment.comment = "protobuf-c guy";
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phone.number = "1234";
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#ifndef PROTO3
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phone.has_type = 1;
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#endif
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phone.type = FOO__PERSON__PHONE_TYPE__WORK;
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phone.comment = &comment;
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phone_numbers[0] = ☎
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person.name = "dave b";
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person.id = 42;
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person.n_phone = 1;
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person.phone = phone_numbers;
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size = foo__person__get_packed_size (&person);
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packed = malloc (size);
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assert (packed);
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size2 = foo__person__pack (&person, packed);
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assert (size == size2);
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foo__person__pack_to_buffer (&person, &bs.base);
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assert (bs.len == size);
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assert (memcmp (bs.data, packed, size) == 0);
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PROTOBUF_C_BUFFER_SIMPLE_CLEAR (&bs);
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person2 = foo__person__unpack (NULL, size, packed);
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assert (person2 != NULL);
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assert (person2->id == 42);
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#ifndef PROTO3
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assert (person2->email == NULL);
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#else
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assert (strcmp (person2->email, "") == 0);
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#endif
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assert (strcmp (person2->name, "dave b") == 0);
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assert (person2->n_phone == 1);
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assert (strcmp (person2->phone[0]->number, "1234") == 0);
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assert (person2->phone[0]->type == FOO__PERSON__PHONE_TYPE__WORK);
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assert (strcmp (person2->phone[0]->comment->comment, "protobuf-c guy") == 0);
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foo__person__free_unpacked (person2, NULL);
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free (packed);
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printf ("test succeeded.\n");
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return 0;
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}
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