all: refactor all current drivers to use new machine.Pin interface

Signed-off-by: Ron Evans <ron@hybridgroup.com>

examples/espat/esphub/main.go

@@ -22,9 +22,9 @@ const pass = "YOURPASS"
 
 // change these to connect to a different UART or pins for the ESP8266/ESP32
 var (
-	uart       = machine.UART1
-	tx   uint8 = machine.D10
-	rx   uint8 = machine.D11
+	uart = machine.UART1
+	tx   = machine.D10
+	rx   = machine.D11
 
 	console = machine.UART0
 
@@ -38,8 +38,8 @@ func main() {
 	adaptor = espat.New(uart)
 	adaptor.Configure()
 
-	readyled := machine.GPIO{machine.LED}
-	readyled.Configure(machine.GPIOConfig{Mode: machine.GPIO_OUTPUT})
+	readyled := machine.LED
+	readyled.Configure(machine.PinConfig{Mode: machine.PinOutput})
 	readyled.High()
 
 	// first check if connected