Pin Definitions - Mango-kid/maciot GitHub Wiki

The below table defines all of the pins on the board and how they will be used in software. The column Arduino Pin refers to the physical label on the MacIoT Board.

An Image of some of the pin labels

For an example lets say you wanted to setup the LED number 0 as an output so that we can later blink it. We would refer to the LED in software as below.

pinMode(LED0, OUTPUT); // setup the pin connected to LED0 as an output

Another example would be that we wanted to use a pin on the Arduino header as an input because it is connected to an external limit switch. In that case we would use the following

pinMode(D4, INPUT) // setup Arduino pin 4 as a digital input

A final example is if we want to connect to one of the sensor pins. Lets say we want to read the value of the battery voltage pin. We would use the command below. Keep in mind this doesnt return a voltage it returns an ineger value that must be converted.

int sensorVal = analogRead(VBATT_SENSE)

Arduino Pin	Software Name	Other Resource
A0	A0	N/A
A1	A1	N/A
A2	A2	N/A
A3	A3	N/A
A4	A4	N/A
A5	A5	Touch Sense
0	D0	UART: RX
1	D1	UART: TX
2	D2	Touch Sense
3	D3
4	D4
5	D5	Touch Sense
6	D6
7	D7
8	D8	Touch Sense
9	D9
10	D10	SPI: SS(CS)
11	D11	SPI: MOSI
12	D12	SPI: MISO
13	D13	SPI: SCK
N/A	SCL; SWICTH2	I2C: SCL; Switch 2
N/A		I2C: SDA
N/A	SWITCH1	Switch 1
N/A	SWICTH0	Switch 0
N/A	LED0	LED 0 (Top)
N/A	LED1	LED 1
N/A	LED2	LED 2
N/A	LED3	LED 3 (Bottom)
N/A	LDR_SENSE	Light Sensor
N/A	VBATT_SENSE	Battery Voltage (VPP)