Button: Handle Pinetime hardware button

The Pintime hardware button has to be enable before usage

Author: StarGate01

src/drivers/PinMap.h

@@ -8,7 +8,7 @@ namespace Pinetime {
       // Pinetime
       static constexpr uint8_t Charging = 12;
       static constexpr uint8_t Cst816sReset = 10;
-      static constexpr uint8_t Button = 13;      
+      static constexpr uint8_t Button = 13;
     #elif defined(TARGET_DEVICE_P8)
       // COLMI P8 and variants
       static constexpr uint8_t Charging = 19;
@@ -18,6 +18,7 @@ namespace Pinetime {
       #error Invalid TARGET_DEVICE
     #endif
 
+    static constexpr uint8_t ButtonEnable = 15;
     static constexpr uint8_t Cst816sIrq = 28;
     static constexpr uint8_t PowerPresent = 19;
     static constexpr uint8_t Bma421Irq = 8;

src/systemtask/SystemTask.cpp

@@ -179,6 +179,8 @@ void SystemTask::Work() {
   pinConfig.is_watcher = false;
 
   // Button
+  nrf_gpio_cfg_output(PinMap::ButtonEnable);
+  nrf_gpio_pin_set(PinMap::ButtonEnable);
   pinConfig.sense = NRF_GPIOTE_POLARITY_TOGGLE;
   pinConfig.pull = NRF_GPIO_PIN_PULLDOWN;
   nrfx_gpiote_in_init(PinMap::Button, &pinConfig, nrfx_gpiote_evt_handler);