Clarification of previous message

Embedded Devices Linux
1

When I add the application gpio_test to the kernel configuration screen, it created in the folder build / apps / gpio_test of my project the following files: 1) “gpio_test.c” 2) “Makefile” 3) “gpio.h” but the module “gpio.c” doesn’t add automatically as well so put it in the manual “Digi ConnectCore User’s Guide for Command Line Tools”.
The module “gpio.c” I created by: 1) make build_kernel 2) make kernel_modules and then putting the kernel image to the board. And my modules are in the folder build / modules /gpio of my project. So I understand that my module “gpio.c” is generic of DIGI and yours is your own because you created with the application gpio_test.
But to me, why the module can not automatically create with the application?

Thank you very much LeonidM

2

gpio_test is user space application. gpio module is a kernel module - it is accessing resources that cannot be accessed from user space.

3

So how can I use the function irq_handler of module gpio.c told me to work with interruptions? Please help me.

Thank you very much LeonidM

4

yes, you should be able to use it. just remember it is ISR so no printfs or anything using interrupts and it has to be short.

5

I don’t understand anything, sorry. You can explain me in more detail?

Thank you very much LeonidM