Index: firmware/App/Controllers/BloodLeak.c
===================================================================
diff -u -r431e1dbb713aa2ce5529e807f86b34239b4210de -r65a0cb19291eda2643e3dd6271b9e278d8cc59ab
--- firmware/App/Controllers/BloodLeak.c	(.../BloodLeak.c)	(revision 431e1dbb713aa2ce5529e807f86b34239b4210de)
+++ firmware/App/Controllers/BloodLeak.c	(.../BloodLeak.c)	(revision 65a0cb19291eda2643e3dd6271b9e278d8cc59ab)
@@ -149,13 +149,16 @@
 /*********************************************************************//**
  * @brief
  * The execBloodLeak function executes the blood leak detector driver.
- * @details Inputs: FPGA blood leak status GPIO pin state
- * @details Outputs: bloodLeakStatus
+ * @details Inputs: bloodLeakGetCalStartTime
+ * @details Outputs: bloodLeakStatus, bloodLeakGetCalStartTime
  * @return none
  *************************************************************************/
 void execBloodLeak( void )
 {
-    // Check if there is a new calibration data available
+    // Check if there is a new calibration data available and whether there has been sufficient time elapsed from the last data calibration get
+    // The elapsed time is used to make sure the prepare buffer is not called several time when the new calibration signal is TRUE for one second
+    // otherwise, the prepareSetPointSeq is called multiple time and zeros the start index. In the mean time, the state might have changed to set
+    // the set point and with the start index being reset to 0, it keeps sending the first character of the set point ('S').
     if ( ( TRUE == isNewCalibrationRecordAvailable() ) && ( calcTimeSince( bloodLeakGetCalStartTime ) > BLOOD_LEAK_MIN_WAIT_TIME_2_GET_CAL_MS ) )
     {
         U32 length = sizeof( HD_BLOOD_LEAK_SENSOR_CAL_RECORD_T );
@@ -167,6 +170,7 @@
         // the calibration data
         bloodLeakState = BLOOD_LEAK_SET_SET_POINT_STATE;
 
+        // Set the calibration start time to make sure the prepare buffer is not set multiple times in a row
         bloodLeakGetCalStartTime = getMSTimerCount();
     }
 
@@ -268,6 +272,8 @@
 
     U32 command = BLOOD_LEAK_START_UP_SEQUENCE[ bloodLeakUARTCmdIndex ];
 
+    // Check if ^U index <= index <= 0 to Tx index. If the current value is either ^U or the 0 to command the FIFO to stop writing
+    // use the transmit function otherwise, use the UART control.
     if ( ( bloodLeakUARTCmdIndex >= BLOOD_LEAK_START_FIFO_CTRL_U_INDEX ) && ( bloodLeakUARTCmdIndex <= BLOOD_LEAK_START_FIFO_STOP_INDEX ) )
     {
         setFPGABloodLeakUARTTransmit( (U08)command );
@@ -277,6 +283,7 @@
         setFPGABloodLeakUARTControl( (U08)command );
     }
 
+    // Done with writing all the commands, reset the index and transition
     if ( bloodLeakUARTCmdIndex >= ( BLOOD_LEAK_STARTUP_SEQ_LENGTH - 1 ) )
     {
         bloodLeakUARTCmdIndex = 0;
@@ -573,9 +580,7 @@
 static void prepareSetPointSeq( void )
 {
     U08 i;
-    // Set the local variables. Create a local char buffer with the maximum possible length
-    // The set point can be maximum 3 digits and when it is converted to string, the null character
-    // is the extra character at the end of the buffer so it maximum length is 4 bytes.
+    // Set the local variables.
     U32 digitCount;
     U32 setPoint    = bloodLeakCalRecord.setPoint;
     U32 bufferIndex = BLOOD_LEAK_SET_POINT_START_CHAR_INDEX;