diff options
| author | ZYH <[email protected]> | 2018-10-11 11:38:04 +0800 |
|---|---|---|
| committer | ZYH <[email protected]> | 2018-10-11 16:42:13 +0800 |
| commit | 0893e542930b1f0c81a4e2cc0893939a08c456bf (patch) | |
| tree | 9e5dc833e71bd6f9cceed300ddc3db787c09b917 | |
| parent | 6e5751d49bd9541902e13e0f673333af60145608 (diff) | |
[bsp][stm32f1xx-hal]修复当开启优化时m3_m4_delay_us延时失效问题
| -rw-r--r-- | bsp/stm32f10x-HAL/drivers/board.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/bsp/stm32f10x-HAL/drivers/board.c b/bsp/stm32f10x-HAL/drivers/board.c index 7ce0503f90..5c7e44c4f8 100644 --- a/bsp/stm32f10x-HAL/drivers/board.c +++ b/bsp/stm32f10x-HAL/drivers/board.c @@ -115,11 +115,12 @@ void SystemClock_Config(void) static void m3_m4_delay_us(rt_uint32_t us) { - int i = (HAL_RCC_GetHCLKFreq() / 4000000 * us); - while (i) + __IO uint32_t Delay = us * (SystemCoreClock / 8U / 1000000U); + do { - i--; - } + __NOP(); + } + while (Delay --); } void HAL_Delay(__IO uint32_t Delay) |