PortManipulation page lacks information about Arduino Mega

Community Website and Forum
1

Hi,

The PortManipulation page has the names and corresponding pins of the ports on the smaller arduino's but doesn't have this info for my new Arduino Mega 2560. I went through the schematic for the Mega 2560 and made a table of the ports and pins. I think this info should be included on the PortManipulation page, or linked to if that is more stream lined.

Here it is (also attached in a file):

For the Arduino Mega 2560

Pin Port Mapping
0 PORTE 0
1 PORTE 1
2 PORTE 4
3 PORTE 5
4 PORTG 5
5 PORTE 3
6 PORTH 3
7 PORTH 4

8 PORTH 5
9 PORTH 6
10 PORTB 4
11 PORTB 5
12 PORTB 6
13 PORTB 7

14 PORTJ 1
15 PORTJ 0
16 PORTH 1
17 PORTH 0
18 PORTD 3
19 PORTD 2
20 PORTD 1
21 PORTD 0

22 PORTA 0
23 PORTA 1
24 PORTA 2
25 PORTA 3
26 PORTA 4
27 PORTA 5
28 PORTA 6
29 PORTA 7

30 PORTB 7
31 PORTB 6
32 PORTB 5
33 PORTB 4
34 PORTB 3
35 PORTB 2
36 PORTB 1
37 PORTB 0

38 PORTD 7
39 PORTG 2
40 PORTG 1
41 PORTG 0
42 PORTL 7
43 PORTL 6
44 PORTL 5
45 PORTL 4

46 PORTL 3
47 PORTL 2
48 PORTL 1
49 PORTL 0
50 PORTB 3
51 PORTB 2
52 PORTB 1
53 PORTB 0

Mega port mapping (635 Bytes)

2

Thanks for this list, I'm desigining a Mega clone at present and it was good to have a second opinion to verify my own design against. I did in fact find two pins swapped because I checked against your list.

I also think I have found a bug in the list

30 PORTB 7
31 PORTB 6
32 PORTB 5
33 PORTB 4
34 PORTB 3
35 PORTB 2
36 PORTB 1
37 PORTB 0

30-37 == PC7-0 not PB.

I think the rest is correct, or at least the same as what I have :slight_smile:

Rob

3

Thank you soooooooooooooooooooooooooo muucchh!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

4

thanks,

I am sending this to the documentation team,

/d

5

The mapping is available in the schematic: http://arduino.cc/en/uploads/Main/arduino-mega2560-schematic.pdf

6

The mapping is available in the schematic:

True, but it's not in a convenient tabular form.

Rob

7

Please see http://arduino.cc/en/Hacking/PinMapping2560 for the 2560 pin mapping and convenient tablular presentation.

8

Vielen Dank für diese Aufstellung :smiley: ich habe schon den ganzen Tag daran gesessen dafür eine Lösung zu erarbeiten :smiley:

9

And the page lacks instructions about reading pins.
-Malhar

10