Wrap the panic handler to disable the gdo uart pins and prevent door …

…openings.

components/secplus_gdo/secplus_gdo.cpp

@@ -171,4 +171,22 @@ namespace secplus_gdo {
     }
 
 } // namespace secplus_gdo
-} // namespace esphome
+} // namespace esphome
+
+// Need to wrap the panic handler to disable the GDO TX pin and pull the output high to
+// prevent spuriously triggering the GDO to open when the ESP32 panics.
+extern "C" {
+#include "hal/gpio_hal.h"
+
+void __real_esp_panic_handler(void*);
+
+void __wrap_esp_panic_handler(void* info) {
+    esp_rom_printf("PANIC: DISABLING GDO UART TX PIN!\n");
+    gpio_hal_iomux_func_sel(GPIO_PIN_MUX_REG[(gpio_num_t)GDO_UART_TX_PIN], PIN_FUNC_GPIO);
+    gpio_set_direction((gpio_num_t)GDO_UART_TX_PIN, GPIO_MODE_INPUT);
+    gpio_pulldown_en((gpio_num_t)GDO_UART_TX_PIN);
+
+    // Call the original panic handler
+    __real_esp_panic_handler(info);
+}
+} //extern "C"

garage-door-GDOv2-Q.yaml

@@ -188,4 +188,5 @@ esphome:
     lib_deps:
       - https://github.com/konnected-io/gdolib#76ba232
     build_flags:
-      - -DUART_SCLK_DEFAULT=UART_SCLK_APB
+      - -DUART_SCLK_DEFAULT=UART_SCLK_APB
+      - -Wl,--wrap=esp_panic_handler