LCD控制实验—孟明明

09计应一班孟明明 LCD控制实验

#include
#include
#include

#include // open() close()
#include // read() write()

#define DEVICE_NAME "/dev/fb0"

#define VERSION "PXA270RP-LCD-V1.00-090101"

void showversion(void)
{
printf("********************************************* ");
printf(" %s ", VERSION);
printf("********************************************* ");

}

//------------------------------------- main ----------------------------------------------------------------
int main(void)
{
int fd;
int ret;
int i;
int j;
int f=0;
int k=0;
unsigned short buf[480][800];

showversion();

printf(" start test_lcd test ");

fd = open(DEVICE_NAME, O_RDWR);

printf("fd = %d ",fd);

if (fd == -1)
{
printf("open device %s error ",DEVICE_NAME);
}
else
{

for(i=0;i<480;i++){
for(j=0;j<800;j++){

buf[i][j]=0x0001;
}
}
ret=write(fd,buf,sizeof(buf));

usleep(500000);
close(fd);
//----------------------------------------------
while(1){ //设置一个方块中嵌套方块的图片并向四周同时扩散
//也可将循环过程封装成一个函数，进行函数回调，效果会更好！

fd = open(DEVICE_NAME, O_RDWR);

for(i=0;i<480;i++){
for(j=0;j<f;j++){
buf[i][j]=0x0001;

}

}
ret=write(fd,buf,sizeof(buf));

//usleep(500000);
close(fd);
fd = open(DEVICE_NAME, O_RDWR);
for(i=200-f;i<280+f;i++){
for(j=340-k;j<460+k;j++){
buf[i][j]=0xf800;
}
}
for(i=220-f;i<260+f;i++){
for(j=370-k;j<430+k;j++){
buf[i][j]=0x0001;
}
}
for(i=240-f;i<240+f;i++){
for(j=400-k;j<400+k;j++){
buf[i][j]=0xf81f;
}
}

f=f+8;
k=k+12;
ret=write(fd,buf,sizeof(buf));
usleep(100000);
close(fd);

if(f>=200||k>=340){

for(i=0;i<480;i++){
for(j=0;j<800;j++){

buf[i][j]=0x0001;
}
}
f=0;
k=0;
}
}

if(getchar()>0){

system("cat fb >/dev/fb0");
system("cat apl_test/fb >/dev/fb0");
}

}

return 0;
}// end main

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