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  • Author Author: phoenixcomm
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NexGen: Arduino Mega: Ports vs Pin Numbers

phoenixcomm
PINPORTsFunction
22 .PORTA 0
23  .PORTA 1
24   .PORTA 2
25   .PORTA 3
26  .PORTA 4
27   .PORTA 5
28  .PORTA 6
29   .PORTA 7
53.PORTB 0SPI_SS
52.PORTB 1SPI_SCK
51.PORTB 2SPI_MOSI
50.PORTB 3SPI_MISO
10  .PORTB 4
11   .PORTB 5
12   .PORTB 6
13   .PORTB 7
37  .PORTC 0
36   .PORTC 1
35   .PORTC 2
34   .PORTC 3
33   .PORTC 4
32   .PORTC 5
31   .PORTC 6
30   .PORTC 7
21   .PORTD 0SCL
20   .PORTD 1SDA
19   .PORTD 2USART1_RX
18   .PORTD 3USART1_TX
38 .PORTD 7
PINPORTsFunction
21   .PORTD 0SCL
20   .PORTD 1SDA
19   .PORTD 2USART1_RX
18   .PORTD 3USART1_TX
38 .PORTD 7
0  .PORTE 0USART0_RX
1   .PORTE 1USART0_TX
5PORTE 3
2   .PORTE 4PWM2
3  .PORTE 5PWM3
41PORTG 0
40 .PORTG 1
39 .PORTG 2
4     .PORTG 5
17.PORTH 0USART2_RX
16.PORTH 1USART2_TX
6   .PORTH 3PWM6
7   .PORTH 4PWM7
8   .PORTH 5PWM8
9   .PORTH 6PWM9
15   .PORTJ 0USART3_TX
14   .PORTJ 1USART3_RX
49 .PORTL 0
48  .PORTL 1
47 .PORTL 2
46   .PORTL 3
45 .PORTL 4
44  .PORTL 5
43 .PORTL 6
42 .PORTL 7

I built this table from https://github.com/arduino/ArduinoCore-avr/blob/master/variants/mega/pins_arduino.h, this table makes it easier to see the port  numbers and they are grouped PORTx0 -> PORTxnimage

 

~~Cris H.