Only enable wakeup via EXT_CHRG_DETECT if we shut down due to low power (#10263)

src/power.h

@@ -100,6 +100,7 @@ class Power : public concurrency::OSThread
     virtual int32_t runOnce() override;
     void setStatusHandler(meshtastic::PowerStatus *handler) { statusHandler = handler; }
     const uint16_t OCV[11] = {OCV_ARRAY};
+    bool isLowBattery() { return low_voltage_counter >= 10; };
 
 #ifdef ARCH_ESP32
     int beforeLightSleep(void *unused);

variants/nrf52840/ELECROW-ThinkNode-M6/variant.cpp

@@ -20,6 +20,7 @@
 
 #include "variant.h"
 #include "nrf.h"
+#include "power.h"
 #include "wiring_constants.h"
 #include "wiring_digital.h"
 
@@ -65,7 +66,11 @@ void variant_shutdown()
     nrf_gpio_pin_sense_t sense1 = NRF_GPIO_PIN_SENSE_LOW;
     nrf_gpio_cfg_sense_set(PIN_BUTTON1, sense1);
 
-    nrf_gpio_cfg_input(EXT_CHRG_DETECT, NRF_GPIO_PIN_PULLUP); // Configure the pin to be woken up as an input
+    // If we are sleeping because of low battery, wake up when the solar charger detects power.
-    nrf_gpio_pin_sense_t sense2 = NRF_GPIO_PIN_SENSE_LOW;
+    // But if the user intentionally put us to sleep with the button, don't wake up just because the lights are on
-    nrf_gpio_cfg_sense_set(EXT_CHRG_DETECT, sense2);
+    if (power->isLowBattery()) {
+        nrf_gpio_cfg_input(EXT_CHRG_DETECT, NRF_GPIO_PIN_PULLUP); // Configure the pin to be woken up as an input
+        nrf_gpio_pin_sense_t sense2 = NRF_GPIO_PIN_SENSE_LOW;
+        nrf_gpio_cfg_sense_set(EXT_CHRG_DETECT, sense2);
+    }
 }

variants/nrf52840/ELECROW-ThinkNode-M6/variant.h

@@ -138,7 +138,7 @@ static const uint8_t A0 = PIN_A0;
 
 #define HAS_SOLAR
 
-#define OCV_ARRAY 4080, 3990, 3935, 3880, 3825, 3770, 3715, 3660, 3605, 3550, 3450
+#define OCV_ARRAY 4080, 3990, 3935, 3880, 3825, 3770, 3715, 3660, 3605, 3550, 3490
 
 #ifdef __cplusplus
 }