在看官方给的 GD32VF103V_EVAL_Demo_Suites > 01_GPIO_Running_Led 中涉及的获取1ms延时中
#define TIMER_CTRL_ADDR 0xd1000000
//延时函数
void delay_1ms(uint32_t count)
{
uint64_t start_mtime, delta_mtime;
uint64_t tmp = get_timer_value();
do {
start_mtime = get_timer_value();
} while (start_mtime == tmp);
do {
delta_mtime = get_timer_value() - start_mtime;
}while(delta_mtime <(SystemCoreClock/4000.0 *count ));
}
uint32_t mtime_lo(void)
{
return *(volatile uint32_t *)(TIMER_CTRL_ADDR + TIMER_MTIME);
}
uint32_t mtime_hi(void)
{
return *(volatile uint32_t *)(TIMER_CTRL_ADDR + TIMER_MTIME + 4);
}
uint64_t get_timer_value()
{
while (1) {
uint32_t hi = mtime_hi(); //hi=high
uint32_t lo = mtime_lo(); //lo=low
if (hi == mtime_hi())
return ((uint64_t)hi << 32) | lo;
}
}
我想知道0xd1000000这个地址指向的寄存器以及配置说明
可是把user_manual和datasheet翻遍了也没找到
求大神能解答下
