Prevent SD access from resetting ESP32 (#16690)
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@ -291,6 +291,16 @@ int32_t SdVolume::freeClusterCount() {
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for (uint16_t i = 0; i < n; i++)
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if (cacheBuffer_.fat32[i] == 0) free++;
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}
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#ifdef ESP32
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// Needed to reset the idle task watchdog timer on ESP32 as reading the complete FAT may easily
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// block for 10+ seconds. yield() is insufficient since it blocks lower prio tasks (e.g., idle).
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static millis_t nextTaskTime = 0;
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const millis_t ms = millis();
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if (ELAPSED(ms, nextTaskTime) {
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vTaskDelay(1); // delay 1 tick (Minimum. Usually 10 or 1 ms depending on skdconfig.h)
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nextTaskTime = ms + 1000; // tickle the task manager again in 1 second
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}
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#endif // ESP32
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}
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return free;
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}
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