i am started to work in keypad interface with sololite
my kernel is 3.0. and kitkat 4.4.2.
i have keypad controller tca8418.. in this controller int pin is connected to processor gpio.
i have compiled successfully with tca8418_keypad.c driver file. and while booting keypad is probing,
in the /dev/input/event0 is created.
but when i run cat /dev/input/event0 there is no data .. then i added executable file.
fd = open("/dev/input/event0", O_RDONLY);
struct input_event ev;
read(fd, &ev, sizeof(struct input_event));
if(ev.type == 1)
//printf("key %i state %i\n", ev.code, ev.value);
if(ev.value == 0)
printf("Pressed key value:%d\n ", ev.code);
i didnt get anything its not entering into while...
can you suggest me how to check keypad controller with sololite .