Frederick Huang / mbed-STM32L452

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Dependents:   STM32L452_Nucleo_ticker

Fork of mbed-dev by mbed official

Diff: targets/TARGET_STM/us_ticker_32b.c

Revision:
167:e84263d55307
Parent:
153:fa9ff456f731
Child:
168:9672193075cf
--- a/targets/TARGET_STM/us_ticker_32b.c	Thu Jun 08 15:02:37 2017 +0100
+++ b/targets/TARGET_STM/us_ticker_32b.c	Wed Jun 21 17:46:44 2017 +0100
@@ -48,6 +48,10 @@
     __HAL_TIM_SET_COMPARE(&TimMasterHandle, TIM_CHANNEL_1, (uint32_t)timestamp);
     // Enable IT
     __HAL_TIM_ENABLE_IT(&TimMasterHandle, TIM_IT_CC1);
+    // Check if timestamp has already passed, and if so, set the event immediately
+    if ((int32_t)(timestamp - TIM_MST->CNT) <= 0) {
+        LL_TIM_GenerateEvent_CC1(TimMasterHandle.Instance);
+    }
 }
 
 void us_ticker_disable_interrupt(void)