static void doWriteByte (int argc, char *argv [])
{
int val ;
if (argc != 3)
{
fprintf (stderr, "Usage: %s wb value\n", argv [0]) ;
exit (1) ;
}
val = (int)strtol (argv [2], NULL, 0) ;
digitalWriteByte (val) ;
}
static void ledPercent (int percent)
{
unsigned int output = 0 ;
if (percent > 11) output |= 0x01 ;
if (percent > 22) output |= 0x02 ;
if (percent > 33) output |= 0x04 ;
if (percent > 44) output |= 0x08 ;
if (percent > 55) output |= 0x10 ;
if (percent > 66) output |= 0x20 ;
if (percent > 77) output |= 0x40 ;
if (percent > 88) output |= 0x80 ;
digitalWriteByte (output) ;
}
int main(void)
{
int i;
if(wiringPiSetup() < 0){ // setup wiringPi
printf("wiringPi setup failed !\n");
return -1;
}
for(i = 0; i < 8; i++){ // set pin mode as output(GPIO0~GPIO7)
pinMode(i, OUTPUT);
}
while(1){
for(i = 0; i < sizeof(SegCode)/sizeof(uchar); i++){ // display 0~9,A~F
digitalWriteByte(SegCode[i]);
delay(500);
}
digitalWriteByte(0x00); //segment off
delay(1000);
}
return 0;
}
static void write_gpio (uint8_t val)
{
//Set GPIO buffer to output
set_gpio_output ();
//Disable IC3 for a moment
digitalWrite (IC3_CE, IC3_DISABLE);
//Write to output buffer
digitalWriteByte (val);
output_waiting = true;
//Clock the data into IC4, ready for the WPC to pick it up
out_clk ();
//Set GPIO buffer back to input
digitalWrite (IC3_CE, IC3_ENABLE);
set_gpio_input ();
}
