Mirror/betaflight
1
0
Fork 0
mirror of https://github.com/betaflight/betaflight.git synced 2025-07-15 04:15:44 +03:00
Code Issues Wiki Activity

Fix timer period on STM32F303 TIM2

Browse source 
TIM2 is 32bit itmer, but we want 16bit period ...
This commit is contained in:
Petr Ledvina 2015-03-26 18:17:21 +01:00
parent a125228d1f
commit 68305a3929
1 changed files with 1 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/main/drivers/timer.c
View file

@ -366,7 +366,7 @@ void configTimeBase(TIM_TypeDef *tim, uint16_t period, uint8_t mhz)
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Period = period - 1; // AKA TIMx_ARR
TIM_TimeBaseStructure.TIM_Period = (period - 1) & 0xffff; // AKA TIMx_ARR
// "The counter clock frequency (CK_CNT) is equal to f CK_PSC / (PSC[15:0] + 1)." - STM32F10x Reference Manual 14.4.11
// Thus for 1Mhz: 72000000 / 1000000 = 72, 72 - 1 = 71 = TIM_Prescaler