tfaour
1b9226326a
Two crashes found flashing to real hardware: - epd_display_stream's 4KB SPI chunk buffer was a stack local, but the default main task stack (3584 bytes) is smaller than that alone -- Guru Meditation stack protection fault. Made it static instead, and bumped CONFIG_ESP_MAIN_TASK_STACK_SIZE to 8192 for headroom in the rest of the boot call chain (provisioning -> QR render -> eventually the HTTP fetch cycle all run in this one task). - epd_wait_busy() polled with a 1ms vTaskDelay, which rounds down to 0 FreeRTOS ticks at the default 100Hz tick rate -- so it never actually blocked, tight-spinning the CPU for the panel's real refresh time (15-30+s for a full-color pass) and starving the idle task long enough to trip the 5s task watchdog. Bumped to 20ms, safely >=1 tick regardless of tick rate. Also updates the EPD pin defaults to the board's actual wiring (CLK=20 MOSI=19 CS=18 DC=9 RST=10 BUSY=11), confirmed working on hardware.
46 lines
1.3 KiB
Plaintext
46 lines
1.3 KiB
Plaintext
menu "E-Paper Display (epd7in3e) Configuration"
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config EPD_PIN_CLK
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int "SPI CLK (SCLK) GPIO"
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default 20
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help
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Defaults match the wiring on the reference build: CLK=20,
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MOSI(DIN)=19, CS=18, DC=9, RST=10, BUSY=11. Override to match
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your own wiring if different.
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Note: DC uses GPIO9, one of the ESP32-C6's strapping pins
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(sampled at reset to help select boot mode). It's only sampled
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during power-on/reset, so it's safe to drive as a normal output
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once the app is running -- but if flashing/boot ever misbehaves,
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check whether the EPD is pulling this line low during reset.
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config EPD_PIN_MOSI
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int "SPI MOSI (DIN) GPIO"
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default 19
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config EPD_PIN_CS
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int "SPI CS GPIO"
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default 18
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config EPD_PIN_DC
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int "Data/Command GPIO"
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default 9
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config EPD_PIN_RST
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int "Reset GPIO"
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default 10
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config EPD_PIN_BUSY
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int "Busy GPIO"
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default 11
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config EPD_SPI_CLOCK_HZ
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int "SPI clock speed (Hz)"
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default 4000000
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help
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The panel's SPI interface is rated well above this, but dupont
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wires/breadboards are often unreliable much past a few MHz.
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Raise this once the physical wiring is confirmed solid.
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endmenu
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