Diff: FixedRefresh.cpp

Revision:

7:28f3a76792cd

Parent:

6:076fcae78bac

--- a/FixedRefresh.cpp	Wed Jun 29 19:04:28 2016 +0000
+++ b/FixedRefresh.cpp	Wed Jun 29 21:41:55 2016 +0000
@@ -10,7 +10,7 @@
 
 
 FixedRefresh::FixedRefresh()
-:waitSemaphore(1) {
+:waitSemaphore(0) {
     // Start the timer that measures the time between successive calls.
     elapsedTime.start();
 }
@@ -25,12 +25,10 @@
 
 bool FixedRefresh::refresh_us(uint32_t micros) {
     /* Capture the elapsed time. */
-    uint32_t elapsedTimeCapture = elapsedTime.read_us() + 12;
+    uint32_t elapsedTimeCapture = elapsedTime.read_us() + 7;
     // If the elapsed time is less than the set time, then we can wait.
     if(elapsedTimeCapture < micros) {
         uint32_t waitTime = micros - elapsedTimeCapture;
-        // Call the semaphore's wait function, thereby locking it.
-        waitSemaphore.wait();
         // Activate the timer callback.
         waitTimer.attach_us(this, &FixedRefresh::timerCallback, waitTime);
         // Call the wait function again. Since we have called wait before, it is locked.
@@ -46,6 +44,5 @@
 void FixedRefresh::timerCallback() {
     elapsedTime.reset();
     waitSemaphore.release();
-    waitSemaphore.release();
 }