Merge pull request #174 from Sissors/master

emilmont · emilmont · commit 85837165133d · 2014-02-18T17:48:06.000Z
Properly round non integer bus-frequencies in MHz
diff --git a/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KLXX/us_ticker.c b/libraries/mbed/targets/hal/TARGET_Freescale/TARGET_KLXX/us_ticker.c
@@ -44,7 +44,7 @@ static void pit_init(void) {
     PIT->CHANNEL[1].TCTRL |= PIT_TCTRL_TEN_MASK;   // Start timer 1
     
     // Use channel 0 as a prescaler for channel 1
-    PIT->CHANNEL[0].LDVAL = bus_frequency() / 1000000 - 1;
+    PIT->CHANNEL[0].LDVAL = (bus_frequency() + 500000) / 1000000 - 1;
     PIT->CHANNEL[0].TCTRL = PIT_TCTRL_TEN_MASK;    // Start timer 0, disable interrupts
 }
 

Original file line number	Diff line number	Diff line change
`@@ -44,7 +44,7 @@ static void pit_init(void) {`
`44`	`44`	`PIT->CHANNEL[1].TCTRL \|= PIT_TCTRL_TEN_MASK; // Start timer 1`
`45`	`45`
`46`	`46`	`// Use channel 0 as a prescaler for channel 1`
`47`		`- PIT->CHANNEL[0].LDVAL = bus_frequency() / 1000000 - 1;`
	`47`	`+ PIT->CHANNEL[0].LDVAL = (bus_frequency() + 500000) / 1000000 - 1;`
`48`	`48`	`PIT->CHANNEL[0].TCTRL = PIT_TCTRL_TEN_MASK; // Start timer 0, disable interrupts`
`49`	`49`	`}`
`50`	`50`