8000 Bump the stack size of the uart task · n3o59hf/circuitpython@b7d1147 · GitHub
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jeplerjepler
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Bump the stack size of the uart task
With DEBUG build and a consle UART, this would occur early during startup on makerfabs tft7: ``` I (0) cpu_start: Starting scheduler on APP CPU. I (10) uart: queue free spaces: 20 ***ERROR*** A stack overflow in task uart_event_task has been detected. Backtrace: 0x403786f2:0x3fce9f40 0x403820a9:0x3fce9f60 0x403850da:0x3fce9f80 0x40383a7d:0x3fcea000 0x40382158:0x3fcea030 0x4038214e:0xa5a5a5a5 |<-CORRUPTED ``` Decoded backtrace was not enlightening: ``` 0x403786f2: panic_abort at /home/jepler/src/circuitpython/ports/espressif/build-makerfabs_tft7/esp-idf/../../esp-idf/components/esp_system/panic.c:408 0x403820a9: esp_system_abort at /home/jepler/src/circuitpython/ports/espressif/build-makerfabs_tft7/esp-idf/../../esp-idf/components/esp_system/esp_system.c:137 0x403850da: vApplicationStackOverflowHook at /home/jepler/src/circuitpython/ports/espressif/build-makerfabs_tft7/esp-idf/../../esp-idf/components/freertos/port/xtensa/port.c:407 0x40383a7d: vTaskSwitchContext at /home/jepler/src/circuitpython/ports/espressif/build-makerfabs_tft7/esp-idf/../../esp-idf/components/freertos/tasks.c:3505 0x40382158: _frxt_dispatch at /home/jepler/src/circuitpython/ports/espressif/build-makerfabs_tft7/esp-idf/../../esp-idf/components/freertos/port/xtensa/portasm.S:436 0x4038214e: _frxt_int_exit at /home/jepler/src/circuitpython/ports/espressif/build-makerfabs_tft7/esp-idf/../../esp-idf/components/freertos/port/xtensa/portasm.S:231 0x00000000: ?? ??:0 ``` Adding an additional 512 bytes of stack allowed CircuitPython to start successfully.
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‎ports/espressif/common-hal/busio/UART.c

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -175,7 +175,7 @@ void common_hal_busio_uart_construct(busio_uart_obj_t *self,
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xTaskCreatePinnedToCore(
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uart_event_task,
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"uart_event_task",
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configMINIMAL_STACK_SIZE,
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configMINIMAL_STACK_SIZE + 512,
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self,
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CONFIG_PTHREAD_TASK_PRIO_DEFAULT,
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&self->event_task,

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