uCOS

开发平台：

C/C++

dev_tp.c：源码内容

							
#include "panel.h"
#include "paneldrv.h"
#include "err.h"
#ifndef NULL
#define NULL 0
#endif
#define CYGNUM_HAL_INTERRUPT_TOUCH		3
 ts_info TsInfo = {CYGNUM_HAL_INTERRUPT_TOUCH};
int ts_open(void* priv)
{
	// Key related state,variable init.
	InitPanelQueue();
	InitTouchPen();    
	return 0;	
}
int ts_set_callback(void* priv,HDEV hdev, DEV_CALLBACK callback)	/* BIOS notify OS, called it in DSR typically */
{
	TsInfo.hdev = hdev;
  	TsInfo.callback = callback;
	return 0;
}
int ts_read(void* priv,unsigned char* buf, unsigned int* len)
{
    ts_event *ts_buffer = (ts_event *)buf;
	if( ts_buffer == NULL )
	{
		if( Is_penexist() )
			*len = sizeof(ts_event);
		else
			*len = 0;
		return 0;
	}
	
    /* may get multipl keys */
	if ( *len < sizeof(ts_event) )
		return -EINTR;
		
    cyg_scheduler_lock();  // Prevent interaction with DSR code
	if(GetPanelInf((PANEL_STRUC *)ts_buffer))
	{
		*len = sizeof(ts_event);
	    cyg_scheduler_unlock(); // Allow DSRs again
    	return ENOERR;
	}
	else
	{
		*len = 0;
	    cyg_scheduler_unlock(); // Allow DSRs again
		return -EAGAIN;
	}
}
int ts_setopt(unsigned int type, void *argp, unsigned int size)
{
	return ENOERR;
}
void ts_init(void){;}
BIOS_DEVIO_TABLE(	ts, 
					ts_open,
					NULL,
					ts_set_callback,
					ts_read,
					NULL,
					ts_setopt,
					NULL,
					NULL,
					NULL)
					
BIOS_DEVTAB_ENTRY(ts, DEV_SYNC_MODE_NONE,0)

						