Re: [ts-7000] 2.6.27.4 matt kernel's keypad question

[Matthieu Crapet <>]

Hi,

The drive is a regular input device driver.
It you are using my LCD console driver, you have nothing to do, the 
/dev/input/inputX will be handled.

On another way, you can compile your kernel with "Event interface" 
option and you will be able to read keys from userland. In short way:

#include <linux/input.h>

struct input_event event;
fd = open("/dev/input/event0");
read(fd, &event, sizeof(event));
if (event.type == EV_KEY) {
  Printf ("EV_EY: C:%u V:%u\n", event.code, event.value);
}
close(fd);

Best regards,
Matthieu



denx_ts wrote:
>
> Hi All,
>
> I have a silly question regading the 4x4 keypad kernel module from
> matt: how can I use it? I can inserted the modules (ep93xx_keypad and
> ts72xx_dio_4x4) but I can't find any usage example for it. As I
> realized it doesn't work as a standard keyboard, or maybe I did
> something wrong. The only change what I've find is the following lines
> in the /proc/interrupts file:
> 72: 3 GPIO kp-row0
> 73: 5 GPIO kp-row1
> 76: 3 GPIO kp-row2
> 78: 6 GPIO kp-row3
>
> Can I register it as a char device? Or is there any other way to use
> it in a program?
>
> Thanks for the answers in advance.
>
> Cheers,
> denx
>
>  


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