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>
41 lines
1.4 KiB
C
41 lines
1.4 KiB
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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#ifndef __EXAMPLE_LIGHT_SLEEP_H__
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#define __EXAMPLE_LIGHT_SLEEP_H__
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#include "esp_err.h"
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/**
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* @brief Initialize automatic light sleep example
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*
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* This example demonstrates integration of TWO components:
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* 1. Host power save monitoring (host_power_save.c)
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* 2. Slave light sleep control (slave_light_sleep.c)
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*
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* The example shows automatic light sleep triggered by host power save events:
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* - Host enters deep sleep → callbacks invoked → slave enters light sleep
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* - Host wakes up → callbacks invoked → slave exits light sleep
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*
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* Users can customize this for different use cases:
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* - Use only host_power_save callbacks (for custom actions, logging, etc.)
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* - Use only slave_light_sleep APIs (manual control based on app logic)
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* - Use both together (automatic mode - shown in this example)
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* - Add custom conditions (battery level, idle time, task states, etc.)
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*
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* To use independently:
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* - Disable this example, call host_power_save_init() directly
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* - Disable this example, call slave_light_sleep_start/stop() directly
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*
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* @return
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* - ESP_OK: Success (even if light sleep component unavailable)
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* - ESP_ERR_*: Critical initialization failed
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*/
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esp_err_t example_light_sleep_init(void);
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#endif /* __EXAMPLE_LIGHT_SLEEP_H__ */
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