WhyCan Forum(哇酷开发者社区)

void gpio_a_set(uint8_t pin, uint8_t value)
{
    if(value>=1)
        (*(volatile unsigned int *)(addr_a)) |= (1<<pin);
    else
        (*(volatile unsigned int *)(addr_a)) &= ~(1<<pin);
}

void main(void)
{
      初始化。。。。。
      while(1){
          gpio_a_set(CLK0,1);
          gpio_a_set(CLK0,0);
      }
}