add PIN_BUTTON for some variants

Author: hathach

variants/feather_nrf52840_express/variant.h

@@ -55,13 +55,10 @@ extern "C"
 
 #define LED_STATE_ON         1         // State when LED is litted
 
-// Buttons
 /*
-#define PIN_BUTTON1             (2)
-#define PIN_BUTTON2             (3)
-#define PIN_BUTTON3             (4)
-#define PIN_BUTTON4             (5)
-*/
+ * Buttons
+ */
+#define PIN_BUTTON1             (7)
 
 /*
  * Analog pins

variants/metro_nrf52840_express/variant.h

@@ -55,13 +55,11 @@ extern "C"
 
 #define LED_STATE_ON         1         // State when LED is litted
 
-// Buttons
 /*
-#define PIN_BUTTON1             (2)
-#define PIN_BUTTON2             (3)
-#define PIN_BUTTON3             (4)
-#define PIN_BUTTON4             (5)
-*/
+ * Buttons
+ */
+#define PIN_BUTTON1             (37)
+#define PIN_BUTTON2             (36)
 
 /*
  * Analog pins

variants/pca10056/variant.h

@@ -54,6 +54,14 @@ extern "C"
 
 #define LED_STATE_ON         0         // State when LED is litted
 
+/*
+ * Buttons
+ */
+#define PIN_BUTTON1          11
+#define PIN_BUTTON2          12
+#define PIN_BUTTON3          24
+#define PIN_BUTTON4          25
+
 /*
  * Analog pins
  */

variants/raytac_mdbt50q_rx/variant.h

@@ -54,6 +54,11 @@ extern "C"
 
 #define LED_STATE_ON         0         // State when LED is litted
 
+/*
+ * Buttons
+ */
+#define PIN_BUTTON1          2
+
 #define PIN_DFU              2
 
 // Buttons