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Diff: targets/TARGET_Freescale/TARGET_K20XX/pwmout_api.c

Revision:
151:5eaa88a5bcc7
Parent:
149:156823d33999
--- a/targets/TARGET_Freescale/TARGET_K20XX/pwmout_api.c	Tue Nov 08 17:45:16 2016 +0000
+++ b/targets/TARGET_Freescale/TARGET_K20XX/pwmout_api.c	Thu Nov 24 17:03:03 2016 +0000
@@ -27,8 +27,11 @@
     PWMName pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
     MBED_ASSERT(pwm != (PWMName)NC);
 
+    uint32_t MGCOUTClock = SystemCoreClock * (1u + ((SIM->CLKDIV1 & SIM_CLKDIV1_OUTDIV1_MASK) >> SIM_CLKDIV1_OUTDIV1_SHIFT));
+    uint32_t BusClock = MGCOUTClock / (1u + ((SIM->CLKDIV1 & SIM_CLKDIV1_OUTDIV2_MASK) >> SIM_CLKDIV1_OUTDIV2_SHIFT));
+
     uint32_t clkdiv = 0;
-    float clkval = SystemCoreClock / 1000000.0f;
+    float clkval = BusClock / 1000000.0f;
 
     while (clkval > 1) {
         clkdiv++;