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>
38 lines
781 B
C
38 lines
781 B
C
/*
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* SPDX-FileCopyrightText: 2025 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Holds RPC defines common to Hosted Slave and Master
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*/
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#ifndef __ESP_HOSTED_RPC__H
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#define __ESP_HOSTED_RPC__H
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/*
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* check components/esp_common/src/esp_err_to_name.c for
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* unused error range
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*/
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#define ESP_ERR_HOSTED_BASE (0x2f00)
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enum {
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RPC_ERR_BASE = ESP_ERR_HOSTED_BASE,
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RPC_ERR_NOT_CONNECTED,
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RPC_ERR_NO_AP_FOUND,
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RPC_ERR_INVALID_PASSWORD,
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RPC_ERR_INVALID_ARGUMENT,
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RPC_ERR_OUT_OF_RANGE,
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RPC_ERR_MEMORY_FAILURE,
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RPC_ERR_UNSUPPORTED_MSG,
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RPC_ERR_INCORRECT_ARG,
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RPC_ERR_PROTOBUF_ENCODE,
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RPC_ERR_PROTOBUF_DECODE,
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RPC_ERR_SET_ASYNC_CB,
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RPC_ERR_TRANSPORT_SEND,
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RPC_ERR_REQUEST_TIMEOUT,
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RPC_ERR_REQ_IN_PROG,
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RPC_ERR_SET_SYNC_SEM,
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};
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#endif
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