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[STM32][common]更新rt_hw_us_delay函数,以支持设置更高延时

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* 未判断设置延时数是否会溢出
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wdfk-prog 2022-12-22 16:46:15 +08:00 committed by Man, Jianting (Meco)
parent 262392a69c
commit db6ee55379
1 changed files with 2 additions and 2 deletions
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4
bsp/stm32/libraries/HAL_Drivers/drv_common.c
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@ -133,11 +133,11 @@ void _Error_Handler(char *s, int num)
*/
void rt_hw_us_delay(rt_uint32_t us)
{
rt_uint32_t ticks;
rt_uint64_t ticks;
rt_uint32_t told, tnow, tcnt = 0;
rt_uint32_t reload = SysTick->LOAD;
ticks = us * reload / (1000000 / RT_TICK_PER_SECOND);
ticks = us * (reload / (1000000 / RT_TICK_PER_SECOND));
told = SysTick->VAL;
while (1)
{