int main()
{
init_platform();
int pin1 = 0;
int pin2 = 0;
int pin3 = 0;
int pin4 = 0;
int all_pins = 0;
print("GPIO Demo\n\r");
GPIO_begin(&myDevice, XPAR_PMODGPIO_0_AXI_LITE_GPIO_BASEADDR, 0xFF);
while(1){
//read individually
pin1 = GPIO_getPin(&myDevice, 1);
pin2 = GPIO_getPin(&myDevice, 2);
pin3 = GPIO_getPin(&myDevice, 3);
pin4 = GPIO_getPin(&myDevice, 4);
//read all together
all_pins = GPIO_getPins(&myDevice);
//print individual reads and the total read masked to the first four bits
xil_printf("switch 1: %d switch 2: %d switch 3: %d switch 4: %d all pins: %d\n\r", pin1, pin2, pin3, pin4, all_pins & 0x0f);
}
cleanup_platform();
return 0;
}
/**
* \brief Liest den Status eines Ausganges ein.
* \param PIN Pinnummer des Ausganges der eingelesen werden soll.
*/
char GPIO_out_state( char pin )
{
char returnval=0;
if ( pin >= sizeof( GPIO_OUT_DATA ) )
return(0);
if ( GPIO_getPin( pgm_read_byte( &GPIO_OUT_DATA[ (int)pin ] ) ) != 0 )
returnval = 1;
return( returnval );
}
void LED_invert(USER_LED_t led)
{
if(LED_checkValidLed(led))
{
level_t actual = GPIO_getPin(GPIO1,led);
if(actual == HIGH)
{
GPIO_clrPin(GPIO1,led);
}
else
{
GPIO_setPin(GPIO1,led);
}
}
}