Blink DS23 PS (Processing System a.k.a the ARM Cortex-A9) Led on the Xilinx ZC702 dev board

zc702_blink_ps_led.c

/*
* @brief Blink DS23 PS (Processing System) Led on the Xilinx ZC702 dev board
*
* To be used with the default BSP generated by Xilinx SDK.
*
* Inspired by:
* - https://forums.xilinx.com/t5/Embedded-Processor-System-Design/
*   ZC706-GPIO-LED-amp-Pushbutton-switch-quot-Magic-Number-quot/td-p/540639
*
* - http://www.xilinx.com/support/answers/51786.html
*
* @author 	Romain Maffina
* @date	23.05.2016
*/

#include "xgpiops.h"

#define DELAY(i,nticks) for (i = 0; i < nticks; i++)

#define GPIO_DEVICE_ID 0
#define MIO(x) x

#define LED_DELAY 	40000000
#define PS_LED_0  MIO(8)
#define PS_LED_1  MIO(10)

int main()
{
	int i;
	XGpioPs Gpio;
	XGpioPs_Config *ConfigPtr;
	
	// init GPIO driver
	ConfigPtr = XGpioPs_LookupConfig(GPIO_DEVICE_ID);
	s32 Status = XGpioPs_CfgInitialize(&Gpio, ConfigPtr, ConfigPtr->BaseAddr);
	Xil_AssertVoid(Status == XST_SUCCESS);
	
	// configure GPIO LED pin (optional, should be the default config)
	XGpioPs_SetDirectionPin(&Gpio, PS_LED_1, 1);
	XGpioPs_SetOutputEnablePin(&Gpio, PS_LED_1, 1);
	
	// blink forever
	while (1) {
		XGpioPs_WritePin(&Gpio, PS_LED_1, 0x0); // turn off
		DELAY(i,LED_DELAY);
		
		XGpioPs_WritePin(&Gpio, PS_LED_1, 0x1); // turn on
		DELAY(i,LED_DELAY);
	}
	
	return 0;
}