wiringPiISR and waitForInterrupt are changed.

[nopnop2002]

GPIO of OPI don't have interrupt function. poll function don't work. So read periodically /sys/class/gpio_sw/XXX/data.(/sys/class/gpio_sw/PA1/data) And change is judged.

[sercxjo]

GPIO has interrups in other driver enabled in Armbian. It works with the WereCatf's fork.

[nopnop2002]

I tried this code using WereCatf's fork. But even if a button was pressed, an event didn't occur. Is an additional driver somewhat necessary?

`#include

include

include

define pin 0

void signal(void){ printf("Signal\n"); }

int main(void){ if(wiringPiSetup() == -1) { printf("wiringPiSetup Error\n"); } pinMode(pin,INPUT); wiringPiISR(pin, INT_EDGE_FALLING, signal ); // wiringPiISR(pin, INT_EDGE_RISING, signal ); while(1) { sleep(10000); } return 0; } `

[sercxjo]

WereCatf's fork based on old version, I have merged it with the current fork, better see it.

1. Interrupts works only with PA... and PG... pins.
2. I use Ubuntu with recompiled kernel. Check that directory /sys/class/gpio/ is presented.

My example with button between pin 37 (PA20) and pin 39 (Ground):

#define DBTN 37
wiringPiSetupPhys();
pinMode(DBTN, INPUT);
pullUpDnControl(DBTN, PUD_UP);
wiringPiISR(DBTN, INT_EDGE_BOTH, &btn_interrupt) ;

[nopnop2002]

Hello sercxjo. Would your fork also work in Armbian? Is recompiled kernel needed?

[sercxjo]

I have not tried Armbian. Here is written that it works. I just ported kernel config-file from the last version of Armbian. Just add CONFIG_GPIO_SYSFS=y to the config.