Diff: targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/pwmout_api.c

Revision:

548:1abac31e188e

Parent:

544:1af5f1c39e80

Child:

554:edd95c0879f8

--- a/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/pwmout_api.c	Fri May 22 09:45:08 2015 +0100
+++ b/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/pwmout_api.c	Fri May 22 10:45:46 2015 +0100
@@ -33,22 +33,23 @@
 static int pwm_clockfreq;
 static int pwm_prescaler_div;
 
-uint32_t pwmout_get_channel_route(pwmout_t *obj) {
-	MBED_ASSERT(obj->channel != (PWMName) NC);
+uint32_t pwmout_get_channel_route(pwmout_t *obj)
+{
+    MBED_ASSERT(obj->channel != (PWMName) NC);
 
-	switch (obj->channel) {
-		case PWM_CH0:
-			return TIMER_ROUTE_CC0PEN;
-			break;
-		case PWM_CH1:
-			return TIMER_ROUTE_CC1PEN;
-			break;
-		case PWM_CH2:
-			return TIMER_ROUTE_CC2PEN;
-			break;
-		default:
-			return 0;
-	}
+    switch (obj->channel) {
+        case PWM_CH0:
+            return TIMER_ROUTE_CC0PEN;
+            break;
+        case PWM_CH1:
+            return TIMER_ROUTE_CC1PEN;
+            break;
+        case PWM_CH2:
+            return TIMER_ROUTE_CC2PEN;
+            break;
+        default:
+            return 0;
+    }
 }
 
 void pwmout_enable_pins(pwmout_t *obj, uint8_t enable)
@@ -63,8 +64,8 @@
 
 void pwmout_enable(pwmout_t *obj, uint8_t enable)
 {
-	/* Start with default CC (Compare/Capture) channel parameters */
-	TIMER_InitCC_TypeDef timerCCInit = TIMER_INITCC_DEFAULT;
+    /* Start with default CC (Compare/Capture) channel parameters */
+    TIMER_InitCC_TypeDef timerCCInit = TIMER_INITCC_DEFAULT;
     if (enable) {
         /* Set mode to PWM */
         timerCCInit.mode = timerCCModePWM;
@@ -76,33 +77,33 @@
 
 void pwmout_init(pwmout_t *obj, PinName pin)
 {
-	obj->channel = (PWMName) pinmap_peripheral(pin, PinMap_PWM);
-	obj->pin = pin;
-	MBED_ASSERT(obj->channel != (PWMName) NC);
+    obj->channel = (PWMName) pinmap_peripheral(pin, PinMap_PWM);
+    obj->pin = pin;
+    MBED_ASSERT(obj->channel != (PWMName) NC);
 
-	/* Turn on clock */
-	CMU_ClockEnable(PWM_TIMER_CLOCK, true);
+    /* Turn on clock */
+    CMU_ClockEnable(PWM_TIMER_CLOCK, true);
 
-	/* Turn on timer */
-	if(!(PWM_TIMER->STATUS & TIMER_STATUS_RUNNING)) {
-		TIMER_Init_TypeDef timerInit = TIMER_INIT_DEFAULT;
-		TIMER_Init(PWM_TIMER, &timerInit);
-	}
+    /* Turn on timer */
+    if(!(PWM_TIMER->STATUS & TIMER_STATUS_RUNNING)) {
+        TIMER_Init_TypeDef timerInit = TIMER_INIT_DEFAULT;
+        TIMER_Init(PWM_TIMER, &timerInit);
+    }
 
     /* Enable correct channel */
-	uint32_t routeloc = pwmout_get_channel_route(obj);
-	if(PWM_TIMER->ROUTE & routeloc) {
-		//This channel was already in use
-		//TODO: gracefully handle this case
-	} else {
-		//This channel was unused up to now
-		PWM_TIMER->ROUTE |= routeloc;
-		blockSleepMode(EM1);
+    uint32_t routeloc = pwmout_get_channel_route(obj);
+    if(PWM_TIMER->ROUTE & routeloc) {
+        //This channel was already in use
+        //TODO: gracefully handle this case
+    } else {
+        //This channel was unused up to now
+        PWM_TIMER->ROUTE |= routeloc;
+        blockSleepMode(EM1);
 
-		//TODO: check if any channel was up already, then don't re-init timer
-		pwmout_enable(obj, true);
-		pwmout_enable_pins(obj, true);
-	}
+        //TODO: check if any channel was up already, then don't re-init timer
+        pwmout_enable(obj, true);
+        pwmout_enable_pins(obj, true);
+    }
 
     /* Route correct channel to location 1 */
     PWM_TIMER->ROUTE &= ~_TIMER_ROUTE_LOCATION_MASK;
@@ -115,18 +116,19 @@
     pwmout_period(obj, 0.02);
 }
 
-void pwmout_free(pwmout_t *obj) {
-	uint32_t routeloc = pwmout_get_channel_route(obj);
-	if(PWM_TIMER->ROUTE & routeloc) {
-		//This channel was in use, so disable
-		PWM_TIMER->ROUTE &= ~routeloc;
-		pwmout_enable_pins(obj, false);
-		unblockSleepMode(EM1);
+void pwmout_free(pwmout_t *obj)
+{
+    uint32_t routeloc = pwmout_get_channel_route(obj);
+    if(PWM_TIMER->ROUTE & routeloc) {
+        //This channel was in use, so disable
+        PWM_TIMER->ROUTE &= ~routeloc;
+        pwmout_enable_pins(obj, false);
+        unblockSleepMode(EM1);
 
-		//TODO: check if all channels are down, then switch off timer
-	} else {
-		//This channel was disabled already
-	}
+        //TODO: check if all channels are down, then switch off timer
+    } else {
+        //This channel was disabled already
+    }
 }
 
 void pwmout_write(pwmout_t *obj, float value)