Hello I'm trying to figure out what pins goes to what on the on the Xplained pro board. I tried to look online but I'm confused. I did mange to get a Arduino Zero bootloading to work but not sure on the rest. Can someone please help me?
Joseph
Trying to figure out what is i2c pins and spi pins. So i can add a Ethernet module and a Oled screen to my project.
The only defined Arduino pinout for the Xplained board I can find is here:
Note that the way the Xplained boards are implemented results in multiple connector pins having the SAME signal...
Hello west thank you. But i'm also wondering if changing the boot loader from a Xplained to a Zero boot loader would change the pin out?
I tried to do a simple blink on D2 because in the image says there is a LED on D2 and when i tried it nothing comes on.
Just a update i did a blink sketch on D13 and from the images on that link is different because of the boot loader the image says EXT header pin 4 is D13 but in the Arduino zero bootloader D13 is EXT 2 header pin 14 pa17 is D13 blink works on that. So in my case the mapping is different.
wondering if changing the boot loader from a Xplained to a Zero boot loader would change the pin out?
No, it won't. The bootloader has its own idea of which LED to manipulate to indicate bootloader start/activity/etc, but this doesn't have any effect at all on the pin assignment of sketches...
I changed the bootloader to the Zero bootloader.
If you notice it is different from what the Site image is because i have changed the Boot loader to Zero.
the image says EXT header pin 4 is D13 but in the Arduino zero bootloader D13 is EXT 2 header pin 14 pa17
Are you using the board package that I linked? The variant.cpp definitely shows D13 as being PA15
sketch operation should be completely determined by the variant.cpp/etc files.
I would swear that D13 is EXT3 pin 6 (or maybe pin5) in the image...
I have to admit that I don't see the logic of that set of pin assignments. It doesn't match the Zero, it doesn't group pins "logically" (D0..8 on one connector, A0..8 on another.). I guess the idea could be to have some digital and some analog pins on each of the EXT connectors, but it still seems weird. Compatibility with some sort of Xplained Pro Extension board, perhaps?
West no. I didnt use the defualt one from the site. I couldn't get that one to work. So i change the bootloader to a arduino zero bootloader.