machine: refactor pins to be of Pin type

src/machine/board_pca10040.go

@@ -7,47 +7,47 @@ const HasLowFrequencyCrystal = true
 
 // LEDs on the PCA10040 (nRF52832 dev board)
 const (
-	LED  = LED1
-	LED1 = 17
-	LED2 = 18
-	LED3 = 19
-	LED4 = 20
+	LED  Pin = LED1
+	LED1 Pin = 17
+	LED2 Pin = 18
+	LED3 Pin = 19
+	LED4 Pin = 20
 )
 
 // Buttons on the PCA10040 (nRF52832 dev board)
 const (
-	BUTTON  = BUTTON1
-	BUTTON1 = 13
-	BUTTON2 = 14
-	BUTTON3 = 15
-	BUTTON4 = 16
+	BUTTON  Pin = BUTTON1
+	BUTTON1 Pin = 13
+	BUTTON2 Pin = 14
+	BUTTON3 Pin = 15
+	BUTTON4 Pin = 16
 )
 
 // UART pins for NRF52840-DK
 const (
-	UART_TX_PIN = 6
-	UART_RX_PIN = 8
+	UART_TX_PIN Pin = 6
+	UART_RX_PIN Pin = 8
 )
 
 // ADC pins
 const (
-	ADC0 = 3
-	ADC1 = 4
-	ADC2 = 28
-	ADC3 = 29
-	ADC4 = 30
-	ADC5 = 31
+	ADC0 Pin = 3
+	ADC1 Pin = 4
+	ADC2 Pin = 28
+	ADC3 Pin = 29
+	ADC4 Pin = 30
+	ADC5 Pin = 31
 )
 
 // I2C pins
 const (
-	SDA_PIN = 26
-	SCL_PIN = 27
+	SDA_PIN Pin = 26
+	SCL_PIN Pin = 27
 )
 
 // SPI pins
 const (
-	SPI0_SCK_PIN  = 25
-	SPI0_MOSI_PIN = 23
-	SPI0_MISO_PIN = 24
+	SPI0_SCK_PIN  Pin = 25
+	SPI0_MOSI_PIN Pin = 23
+	SPI0_MISO_PIN Pin = 24
 )