EMTime/libopencm3
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Added convenience funcions for timer input capture filter and prescaler.

Browse Source
This commit is contained in:
Gareth McMullin
2012-04-08 11:11:52 +12:00
parent 567faa9b61
commit a62473fbdf
2 changed files with 84 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
lib/stm32/f1/timer.c
View File

@@ -914,3 +914,48 @@ u32 timer_get_counter(u32 timer_peripheral)
{
return TIM_CNT(timer_peripheral);
}
void timer_ic_set_filter(u32 timer, enum tim_ic_id ic, enum tim_ic_filter flt)
{
switch (ic) {
case TIM_IC1:
TIM_CCMR1(timer) &= ~TIM_CCMR1_IC1F_MASK;
TIM_CCMR1(timer) |= flt << 4;
break;
case TIM_IC2:
TIM_CCMR1(timer) &= ~TIM_CCMR1_IC2F_MASK;
TIM_CCMR1(timer) |= flt << 12;
break;
case TIM_IC3:
TIM_CCMR2(timer) &= ~TIM_CCMR2_IC3F_MASK;
TIM_CCMR2(timer) |= flt << 4;
break;
case TIM_IC4:
TIM_CCMR2(timer) &= ~TIM_CCMR2_IC4F_MASK;
TIM_CCMR2(timer) |= flt << 12;
break;
}
}
void timer_ic_set_prescaler(u32 timer, enum tim_ic_id ic, enum tim_ic_psc psc)
{
switch (ic) {
case TIM_IC1:
TIM_CCMR1(timer) &= ~TIM_CCMR1_IC1PSC_MASK;
TIM_CCMR1(timer) |= psc << 2;
break;
case TIM_IC2:
TIM_CCMR1(timer) &= ~TIM_CCMR1_IC2PSC_MASK;
TIM_CCMR1(timer) |= psc << 10;
break;
case TIM_IC3:
TIM_CCMR2(timer) &= ~TIM_CCMR2_IC3PSC_MASK;
TIM_CCMR2(timer) |= psc << 4;
break;
case TIM_IC4:
TIM_CCMR2(timer) &= ~TIM_CCMR2_IC4PSC_MASK;
TIM_CCMR2(timer) |= psc << 10;
break;
}
}