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Added functions for timer input capture polarity and enable/disable.

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This commit is contained in:
Gareth McMullin 2012-04-08 13:55:16 +12:00
parent 4b041697f4
commit a8ec86a527
2 changed files with 27 additions and 0 deletions
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9
include/libopencm3/stm32/timer.h
View File

@ -897,6 +897,12 @@ enum tim_ic_input {
TIM_IC_IN_TI4 = 6,
};
/* Input Capture input prescaler */
enum tim_ic_pol {
TIM_IC_RISING,
TIM_IC_FALLING,
};
/* --- TIM functions ------------------------------------------------------- */
void timer_reset(u32 timer_peripheral);
void timer_enable_irq(u32 timer_peripheral, u32 irq);
@ -967,5 +973,8 @@ u32 timer_get_counter(u32 timer_peripheral);
void timer_ic_set_filter(u32 timer, enum tim_ic_id ic, enum tim_ic_filter flt);
void timer_ic_set_prescaler(u32 timer, enum tim_ic_id ic, enum tim_ic_psc psc);
void timer_ic_set_input(u32 timer, enum tim_ic_id ic, enum tim_ic_input in);
void timer_ic_set_polarity(u32 timer, enum tim_ic_id ic, enum tim_ic_pol pol);
void timer_ic_enable(u32 timer, enum tim_ic_id ic);
void timer_ic_disable(u32 timer, enum tim_ic_id ic);
#endif

18
lib/stm32/f1/timer.c
View File

@ -989,3 +989,21 @@ void timer_ic_set_input(u32 timer, enum tim_ic_id ic, enum tim_ic_input in)
}
}
void timer_ic_set_polarity(u32 timer, enum tim_ic_id ic, enum tim_ic_pol pol)
{
if (pol)
TIM_CCER(timer) |= (0x2 << (ic * 4));
else
TIM_CCER(timer) &= ~(0x2 << (ic * 4));
}
void timer_ic_enable(u32 timer, enum tim_ic_id ic)
{
TIM_CCER(timer) |= (0x1 << (ic * 4));
}
void timer_ic_disable(u32 timer, enum tim_ic_id ic)
{
TIM_CCER(timer) &= ~(0x1 << (ic * 4));
}