Hello again. I already used the gpio.c module, which in my case the function is “ns9xxx_gpio_irq_handler” but I get many errors “no such file or directory” of libraries "# include " " # include “,” # include “and many more and errors as " error: ‘GPIO_CFG_FUNC_2’ undeclared here (not in a function)”. I’m reading the book LINUX DEVICE DRIVERS and places that you must have a current version of kernel (I have the 2.26). Do you think that it can be the version of the Kernel the problem that to compile that give me so many errors?
Thank you very much LeonidM.