mbed official
mbed library sources
Dependents: Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more
Superseded
This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.
Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.
If you are looking for a stable and tested release, please import one of the official mbed library releases:
Import librarymbed
The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.
Last commit 20 Feb 2019 by 
mbed official
Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/lp_ticker.c
- Revision:
- 548:1abac31e188e
- Parent:
- 525:c320967f86b9
- Child:
- 627:4fa1328d9c60
--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/lp_ticker.c Fri May 22 09:45:08 2015 +0100
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/lp_ticker.c Fri May 22 10:45:46 2015 +0100
@@ -27,53 +27,57 @@
rtc_set_comp0_handler((uint32_t)lp_ticker_irq_handler);
}
-void lp_ticker_set_interrupt(timestamp_t timestamp) {
- uint64_t timestamp_ticks;
+void lp_ticker_set_interrupt(timestamp_t timestamp)
+{
+ uint64_t timestamp_ticks;
uint64_t current_ticks = RTC_CounterGet();
timestamp_t current_time = ((uint64_t)(current_ticks * 1000000) / (LOW_ENERGY_CLOCK_FREQUENCY / RTC_CLOCKDIV_INT));
-
-
+
+
/* calculate offset value */
timestamp_t offset = timestamp - current_time;
if(offset > 0xEFFFFFFF) offset = 100;
-
+
/* map offset to RTC value */
- // ticks = offset * RTC frequency div 1000000
- timestamp_ticks = ((uint64_t)offset * (LOW_ENERGY_CLOCK_FREQUENCY / RTC_CLOCKDIV_INT)) / 1000000;
+ // ticks = offset * RTC frequency div 1000000
+ timestamp_ticks = ((uint64_t)offset * (LOW_ENERGY_CLOCK_FREQUENCY / RTC_CLOCKDIV_INT)) / 1000000;
timestamp_ticks += current_ticks;
- /* RTC has 24 bit resolution */
- timestamp_ticks &= 0xFFFFFF;
+ /* RTC has 24 bit resolution */
+ timestamp_ticks &= 0xFFFFFF;
/* check for RTC limitation */
if((timestamp_ticks - RTC_CounterGet()) >= 0x800000) timestamp_ticks = RTC_CounterGet() + 2;
-
- /* Set callback */
- RTC_FreezeEnable(true);
- RTC_CompareSet(0, (uint32_t)timestamp_ticks);
- RTC_IntEnable(RTC_IF_COMP0);
- RTC_FreezeEnable(false);
+
+ /* Set callback */
+ RTC_FreezeEnable(true);
+ RTC_CompareSet(0, (uint32_t)timestamp_ticks);
+ RTC_IntEnable(RTC_IF_COMP0);
+ RTC_FreezeEnable(false);
}
-inline void lp_ticker_disable_interrupt() {
- RTC_IntDisable(RTC_IF_COMP0);
+inline void lp_ticker_disable_interrupt()
+{
+ RTC_IntDisable(RTC_IF_COMP0);
}
-inline void lp_ticker_clear_interrupt() {
- RTC_IntClear(RTC_IF_COMP0);
+inline void lp_ticker_clear_interrupt()
+{
+ RTC_IntClear(RTC_IF_COMP0);
}
-timestamp_t lp_ticker_read() {
- uint64_t ticks_temp;
- uint64_t ticks = RTC_CounterGet();
+timestamp_t lp_ticker_read()
+{
+ uint64_t ticks_temp;
+ uint64_t ticks = RTC_CounterGet();
- /* ticks = counter tick value
- * timestamp = value in microseconds
- * timestamp = ticks * 1.000.000 / RTC frequency
- */
+ /* ticks = counter tick value
+ * timestamp = value in microseconds
+ * timestamp = ticks * 1.000.000 / RTC frequency
+ */
- ticks_temp = (ticks * 1000000) / (LOW_ENERGY_CLOCK_FREQUENCY / RTC_CLOCKDIV_INT);
- return (timestamp_t) (ticks_temp & 0xFFFFFFFF);
+ ticks_temp = (ticks * 1000000) / (LOW_ENERGY_CLOCK_FREQUENCY / RTC_CLOCKDIV_INT);
+ return (timestamp_t) (ticks_temp & 0xFFFFFFFF);
}
#endif
