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Added get flag and get counter functions to timer. Allow proper interrupt handling and recording timer counter values.

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This commit is contained in:
Piotr Esden-Tempski 2011-02-01 22:43:18 -08:00
parent d40fb96fcf
commit c7587f11ec
2 changed files with 17 additions and 0 deletions
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2
include/libopencm3/stm32/timer.h
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@ -855,6 +855,7 @@ enum tim_oc_mode {
void timer_reset(u32 timer_peripheral);
void timer_enable_irq(u32 timer_peripheral, u32 irq);
void timer_disable_irq(u32 timer_peripheral, u32 irq);
bool timer_get_flag(u32 timer_peripheral, u32 flag);
void timer_clear_flag(u32 timer_peripheral, u32 flag);
void timer_set_mode(u32 timer_peripheral, u8 clock_div,
u8 alignment, u8 direction);
@ -915,5 +916,6 @@ void timer_set_disabled_off_state_in_idle_mode(u32 timer_peripheral);
void timer_set_break_lock(u32 timer_peripheral, u32 lock);
void timer_set_deadtime(u32 timer_peripheral, u32 deadtime);
void timer_generate_event(u32 timer_peripheral, u32 event);
u32 timer_get_counter(u32 timer_peripheral);
#endif

15
lib/stm32/timer.c
View File

@ -104,6 +104,16 @@ void timer_disable_irq(u32 timer_peripheral, u32 irq)
TIM_DIER(timer_peripheral) &= ~irq;
}
bool timer_get_flag(u32 timer_peripheral, u32 flag)
{
if (((TIM_SR(timer_peripheral) & flag) != 0) &&
((TIM_DIER(timer_peripheral) & flag) != 0)) {
return true;
}
return false;
}
void timer_clear_flag(u32 timer_peripheral, u32 flag)
{
TIM_SR(timer_peripheral) &= ~flag;
@ -929,3 +939,8 @@ void timer_generate_event(u32 timer_peripheral, u32 event)
{
TIM_EGR(timer_peripheral) |= event;
}
u32 timer_get_counter(u32 timer_peripheral)
{
return TIM_CNT(timer_peripheral);
}