mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

Files at this revision

API Documentation at this revision

Revision 137:28723fa54344, committed 2016-05-23

Comitter:
mbed_official
Date:
Mon May 23 15:15:12 2016 +0100
Parent:
136:5728e9819171
Child:
138:881eab8cab64
Commit message:
Synchronized with git revision b395dd5956dcbb5c3f4336d2d917210041741871

Full URL: https://github.com/mbedmicro/mbed/commit/b395dd5956dcbb5c3f4336d2d917210041741871/

Changed in this revision

targets/hal/TARGET_NXP/TARGET_LPC81X/pwmout_api.c Show annotated file Show diff for this revision Revisions of this file 
--- a/targets/hal/TARGET_NXP/TARGET_LPC81X/pwmout_api.c	Mon May 23 14:15:16 2016 +0100
+++ b/targets/hal/TARGET_NXP/TARGET_LPC81X/pwmout_api.c	Mon May 23 15:15:12 2016 +0100
@@ -152,10 +152,18 @@
     uint32_t t_off = (uint32_t)((float)(obj->pwm->MATCHREL[0].U) * value);
     obj->pwm->MATCHREL[(obj->pwm_ch) + 1].U = t_off; // New endtime
 
+    // Clear OxRES (conflict resolution register) bit first, effect of simultaneous set and clear on output x
+    int offset = (obj->pwm_ch * 2);
+    obj->pwm->RES &= ~(0x3 << offset);
+
     if (value == 0.0f) { // duty is 0%
+        // Clear output
+        obj->pwm->RES |=  (0x2 << offset);
         // Set CLR event to be same as SET event, makes output to be 0 (low)
         obj->pwm->OUT[(obj->pwm_ch)].CLR = (1 << 0);
     } else {
+        // Set output
+        obj->pwm->RES |=  (0x1 << offset);
         // Use normal CLR event (current SCT ch + 1)
         obj->pwm->OUT[(obj->pwm_ch)].CLR = (1 << ((obj->pwm_ch) + 1));
     }