如何使用 C 语言遍历 ARM AT91SAM7S256 微控制器中的 LED 列表

Question

I am writing a code for the ARM AT91SAM7S256 Microcontoller. I am trying to turn on the LED randomly.

Up until now, I have initialised the LEDS in an array.

My array is

short leds [] = {LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8};

The code line to set the led on is

SetLEDcolor(LEDNumber, RED);

The value of LEDNumber should come randomly from the array.

Answer 1

srand(time(NULL));

int ix = rand() % (sizeof(leds)/sizeof(*leds));
SetLEDcolor(leds[ix], RED);