EAPI_Test and GPIO

I need to configure pin 27 of CN25 (KSO10) as an ouput GPIO by using EAPI_Test program.
IIUC, I need to run something like this:
sudo ./EAPI_Test -gs 0 <param_2> <param_3> 0

It is not clear, however, what values I have to use for <param_2> and <param_3>:
<param_2> -> ID (see 9.1.1 in COM_EAPI_R1_0.pdf
<param_3> -> Bitmask (see 9.1 in COM_EAPI_R1_0.pdf

Any help would be appreciated.
Thank you.

 

I did some tests and found the following correlation between PIN # / FUNCTION / EAPI ID:




PIN >>> EAPI ID
13 >>> 0
14 >>> 5
15 >>> 1
16 >>> 6
17 >>> 2
18 >>> 7
19 >>> 3
20 >>> 8
21 >>> 4
22 >>> 9
23 >>> 10
24 >>> 13
25 >>> 11
26 >>> 14
27 >>> 12
28 >>> 15

so, in your case, to set the PIN 27 to output it should be:

Code:

EAPI_Test -gs 0 12 1 0

(I always use 1 for the bitmask)

and then you change the value with:

Code:

EAPI_Test -gf 0 12 1 0
EAPI_Test -gf 0 12 1 1

 

Thank you, Maximo.
It works perfectly.

 

I think it might me good for this relations between CN25 pin and EAPI ID to be on the Documentation in https://www.udoo.org/docs-bolt/Hardware_References/Pinout_Headers.html

 

Hi, I have a problem using GPIO via the EAPI_Test program. I am following the description by Maximo. The command sudo ./EAPI_Test -gp 0 0 seems to work since it produces output. Running the command "sudo ./EAPI_Test -gs 0 0 1 1" I get "EAPI_STATUS_TIMEOUT". The reason to use sudo is to avoid permission violation. My UDOO Bolt V8 runs Ubuntu 22.04. Is it possible that I have to change something in BIOS to get it work?? Where can I find source code for the EAPI to be able to debug this software?

 

Hi, problem is solved. I updated the BIOS to latest version, and it works now.