Diff: targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K22F/us_ticker.c

Revision:

177:d650f5d4c87a

Parent:

174:b96e65c34a4d

Child:

182:a56a73fd2a6f

--- a/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K22F/us_ticker.c	Wed Oct 25 14:53:38 2017 +0100
+++ b/targets/TARGET_Freescale/TARGET_MCUXpresso_MCUS/TARGET_MCU_K22F/us_ticker.c	Wed Nov 08 13:50:44 2017 +0000
@@ -21,6 +21,16 @@
 
 static int us_ticker_inited = 0;
 
+static void pit_isr(void)
+{
+    PIT_ClearStatusFlags(PIT, kPIT_Chnl_3, PIT_TFLG_TIF_MASK);
+    PIT_ClearStatusFlags(PIT, kPIT_Chnl_2, PIT_TFLG_TIF_MASK);
+    PIT_StopTimer(PIT, kPIT_Chnl_2);
+    PIT_StopTimer(PIT, kPIT_Chnl_3);
+
+    us_ticker_irq_handler();
+}
+
 void us_ticker_init(void)
 {
     if (us_ticker_inited) {
@@ -47,7 +57,7 @@
     //Ticker
     PIT_SetTimerPeriod(PIT, kPIT_Chnl_2, busClock / 1000000 - 1);
     PIT_SetTimerChainMode(PIT, kPIT_Chnl_3, true);
-    NVIC_SetVector(PIT3_IRQn, (uint32_t)us_ticker_irq_handler);
+    NVIC_SetVector(PIT3_IRQn, (uint32_t)pit_isr);
     NVIC_EnableIRQ(PIT3_IRQn);
 }