38 lines
1.4 KiB
C++
38 lines
1.4 KiB
C++
// Verbatim repro of the failing sketch reported in
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// https://github.com/davidmonterocrespo24/velxio/issues/129
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//
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// Symptom: on the ESP32-CAM board the LED wired to pin 13 never lights or
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// blinks. The user notes voltage is measurable at the pin but no toggling.
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//
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// This sketch uses the Arduino runtime (pinMode/digitalWrite/delay). On the
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// lcgamboa esp32-picsimlab QEMU machine those helpers live in cached flash
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// regions which are temporarily disabled while WiFi/BT init runs on core 1
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// — accessing them then crashes the firmware before the first toggle.
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//
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// Compile (FQBN must match esp32-cam, FlashMode dio):
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// arduino-cli compile \
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// --fqbn esp32:esp32:esp32cam:FlashMode=dio \
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// --output-dir test/esp32_cam/out_blink_pin13 \
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// test/esp32_cam/sketches/blink_pin13
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//
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// Merge to the 4 MB image lcgamboa expects:
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// esptool.py --chip esp32 merge_bin --fill-flash-size 4MB \
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// -o test/esp32_cam/binaries/blink_pin13.merged.bin \
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// --flash_mode dio --flash_size 4MB \
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// 0x1000 test/esp32_cam/out_blink_pin13/blink_pin13.ino.bootloader.bin \
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// 0x8000 test/esp32_cam/out_blink_pin13/blink_pin13.ino.partitions.bin \
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// 0x10000 test/esp32_cam/out_blink_pin13/blink_pin13.ino.bin
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#define LED_PIN 13
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void setup() {
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pinMode(LED_PIN, OUTPUT);
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}
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void loop() {
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digitalWrite(LED_PIN, HIGH);
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delay(1000);
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digitalWrite(LED_PIN, LOW);
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delay(1000);
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}
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