发布时间 : 星期三 文章Minigui移植uClinux更新完毕开始阅读8d147661172ded630a1cb65b
if( matrixPtr->Divider != 0 ) {
/* Operation order is important since we are doing integer */ /* math. Make sure you add all terms together before */ /* dividing, so that the remainder is not rounded off */ /* prematurely. */
displayPtr->x = ( (matrixPtr->An * screenPtr->x) + (matrixPtr->Bn * screenPtr->y) + matrixPtr->Cn
) / matrixPtr->Divider ;
displayPtr->y = ( (matrixPtr->Dn * screenPtr->x) + (matrixPtr->En * screenPtr->y) + matrixPtr->Fn
) / matrixPtr->Divider ; } else {
retvalue = -1 ; }
return( retvalue ) ;
} /* end of getDisplayPoint() */
Readpos.c 程序，帮助你读取触摸屏的值
#include
typedef struct {
unsigned short pressure; unsigned short x; unsigned short y; unsigned short pad; } TS_EVENT;
static TS_EVENT ts_event;
static int ts;
int main() {
ts = open (\ if (ts < 0) {
fprintf (stderr, \ return 0; }
while(1) {
if( read (ts, &ts_event, sizeof (TS_EVENT))) {
printf(\ } } }