Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -r15919f0c12c0047d3b6331c1f97cdad1dafb3f1b -rb66c3225a5845574b9a4214b391fff4b213e7298
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 15919f0c12c0047d3b6331c1f97cdad1dafb3f1b)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision b66c3225a5845574b9a4214b391fff4b213e7298)
@@ -7,8 +7,8 @@
 *
 * @file    BloodFlow.c
 *
-* @author  (last)      Sean Nash
-* @date    (last)      09-Aug-2022
+* @author  (last)      Michael Garthwaite
+* @date    (last)      12-Oct-2022
 *
 * @author  (original)  Sean Nash
 * @date    (original)  07-Nov-2019
@@ -110,6 +110,8 @@
 #define BP_PWM_FROM_ML_PER_MIN(rate)        ( (rate) * BP_ML_PER_MIN_TO_PUMP_RPM_FACTOR * BP_GEAR_RATIO * BP_MOTOR_RPM_TO_PWM_DC_FACTOR + BP_PWM_ZERO_OFFSET )
 /// Conversion from PWM duty cycle % to commanded pump motor speed.
 #define BP_PWM_TO_MOTOR_SPEED_RPM(pwm)      ( ((pwm) - BP_PWM_ZERO_OFFSET) * 4000.0F )
+/// Conversion macro from mL/min to estimated PWM duty cycle %.
+#define BP_ML_PER_MIN_FROM_PWM(pwm)         ( ( ( pwm - BP_PWM_ZERO_OFFSET ) / ( BP_ML_PER_MIN_TO_PUMP_RPM_FACTOR * BP_GEAR_RATIO * BP_MOTOR_RPM_TO_PWM_DC_FACTOR ) ) )
 
 /// Measured blood flow is filtered w/ moving average.
 #define SIZE_OF_ROLLING_AVG                 ( ( MS_PER_SECOND / TASK_PRIORITY_INTERVAL ) * 1 )
@@ -1640,5 +1642,27 @@
 
     return result;
 }
+
+/*********************************************************************//**
+ * @brief
+ * The testSetBloodPumpTargetDutyCycle function sets the duty cycle of the
+ * blood pump by calling setBloodPumpTargetFlowRate.
+ * @details Inputs: none
+ * @details Outputs: none
+ * @param value duty cycle of the blood pump (as a percentage).
+ * @return TRUE if reset successful, FALSE if not
+ *************************************************************************/
+BOOL testSetBloodPumpTargetDutyCycle( F32 value )
+{
+    BOOL result = FALSE;
+
+    if ( TRUE == isTestingActivated() )
+    {
+        setBloodPumpTargetFlowRate( (U32)BP_ML_PER_MIN_FROM_PWM( value ), MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP );
+        result = TRUE;
+    }
+
+    return result;
+}
 
 /**@}*/