Lu yunfeng wrote:
> Nidhi,
>
> here is my problem:
>
> a)normally an application can get key value just like the following function
> calls in the no embeded directFB if the Linux has a PS interface keybaord:
> 1)CreateInputEventBuffer( dfb, DICAPS_KEYS|DICAPS_BUTTONS|DICAPS_AXES,
> DFB_TRUE, &eventBuffer);
> 2)eventBuffer->WaitForEvent(eventBuffer);
> 3)eventBuffer->GetEvent(eventBuffer, &event);
> 4)keyvalue=event.input.type;
>
> b)however in my embedded Linux system, I have a remote controler which is
> connected to the target board through RS232 cable with embedded Linux on
> which the directFB is running.
> 1) first I press a key on remote(for example "1" key") control ,
> 2) because the remote controller is connected to the target board with
> RS232 cable, the firmware on the remote controller will send 0x31('1'
> character) to the UART2 port of the target directly.
> 3) Linux UART driver will receive the byte( 0x31) save it into a buffer.
> a simple application can get the key value into the user space memory.
>
> now I hope DirectFB can detect there is a key press event happened in this
> case, and DirectFB can get the key value(0x31) with the same function
> call(GetEvent), just like the event is caused by the pressing the '1' key on
> the local keyboard.
You can write a new input driver or use DiVine (CVS) with a small
program that reads from the serial and generates your events.
--
Best regards,
Denis Oliver Kropp
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