Index: firmware/App/Modes/ModeTreatment.c =================================================================== diff -u -rc68065fe2cfcfee46eae9d8a8af68b42b662661c -r5815db0d9a40db034fd03dba2b8960ad518a9984 --- firmware/App/Modes/ModeTreatment.c (.../ModeTreatment.c) (revision c68065fe2cfcfee46eae9d8a8af68b42b662661c) +++ firmware/App/Modes/ModeTreatment.c (.../ModeTreatment.c) (revision 5815db0d9a40db034fd03dba2b8960ad518a9984) @@ -1095,6 +1095,9 @@ S32 timeDiff = 0; F32 rateDiff = 0.0; HD_OP_MODE_T currMode = getCurrentOperationMode(); + S32 txSecRem = CALC_TREAT_TIME_REMAINING_IN_SECS(); + S32 txMinEla = CALC_ELAPSED_TREAT_TIME_IN_SECS() / SEC_PER_MIN; + F32 txMinRem = (F32)txSecRem / (F32)SEC_PER_MIN; // Reset pending UF/time settings changes to current values in case request is rejected pendingUFVolumeChange = presMaxUFVolumeML; @@ -1109,9 +1112,12 @@ { DIALYSIS_STATE_T currDialysisState = getDialysisState(); UF_STATE_T currUFState = getUltrafiltrationState(); - F32 uFRate = uFVolume / ((F32)presTreatmentTimeSecs / (F32)SEC_PER_MIN); // What UF rate would be if user selected to adjust it - U32 trtTime = (S32)( uFVolume / presUFRate ) + 1; // What the treatment duration would be if user selected to adjust it - U32 dialVolume = getTreatmentParameterU32( TREATMENT_PARAM_DIALYSATE_FLOW ) * trtTime; // What dialysate volume would be if user selected to adjust time + F32 colUFVol = getUltrafiltrationReferenceVolume(); // How much UF volume have we taken so far? + F32 remUFVol = uFVolume - colUFVol; // What would remaining UF volume be after subtracting UF volume already taken + F32 remUFVolCap = RANGE( remUFVol, 0.0F, (F32)MAX_UF_VOLUME_ML ); // Enforce valid range on remaining UF volume + F32 uFRate = remUFVolCap / txMinRem; // What UF rate would be if user selected to adjust it + U32 trtTime = ( fabs( presUFRate ) < NEARLY_ZERO ? txMinEla + 1 : (S32)( remUFVolCap / presUFRate ) + txMinEla + 1 ); // What the treatment duration would be if user selected to adjust it + U32 dialVolume = getTreatmentParameterU32( TREATMENT_PARAM_DIALYSATE_FLOW ) * trtTime; // What dialysate volume would be if user selected to adjust time // UF should already be paused but let's make sure. if ( ( TREATMENT_DIALYSIS_STATE == currentTreatmentState ) && Index: firmware/App/Modes/Prime.c =================================================================== diff -u -rc68065fe2cfcfee46eae9d8a8af68b42b662661c -r5815db0d9a40db034fd03dba2b8960ad518a9984 --- firmware/App/Modes/Prime.c (.../Prime.c) (revision c68065fe2cfcfee46eae9d8a8af68b42b662661c) +++ firmware/App/Modes/Prime.c (.../Prime.c) (revision 5815db0d9a40db034fd03dba2b8960ad518a9984) @@ -47,8 +47,8 @@ #define BLOOD_PUMP_FAST_FLOW_RATE_CIRC_BLOOD_CIRCUIT_ML_MIN 300 ///< Blood pump fast flow rate during prime recirculate blood circuit state. #define BLOOD_PUMP_FLOW_RATE_SALINE_DIALYZER_ML_MIN 300 ///< Blood pump flow rate during prime the saline dialyzer dialysate state. #define DIALYSATE_PUMP_PRIME_FLOW_RATE_ML_MIN 300 ///< Dialysate pump flow rate during priming fluid path. -#define DIALYSATE_PUMP_FAST_PRIME_FLOW_RATE_ML_MIN 600 ///< Dialysate pump flow rate during priming fluid path. -#define DPO_PUMP_PRIME_FLOW_RATE_ML_MIN 225 ///< Dialysate outlet pump flow rate needed to match PWM with dialysate inlet pump @ 300 mL/min in open loop mode. +#define DIALYSATE_PUMP_FAST_PRIME_FLOW_RATE_ML_MIN 600 ///< Dialysate pump faster flow rate during priming fluid path. +#define DPO_PUMP_PRIME_FLOW_RATE_ML_MIN 240 ///< Dialysate outlet pump flow rate needed to match PWM with dialysate inlet pump @ 300 mL/min in open loop mode. #define DIALYSATE_DIALYZER_TUBE_VOLUME_ML 115 ///< This total tube volume is used to calculate the Dpi & Dpo time out in the dialysate dialyzer state. #define DIALYSATE_DIALYZER_BYPASS_TUBE_VOLUME_ML 75 ///< This volume is used to calculate the DPi pump time out in the dialyzer bypass state. @@ -62,8 +62,10 @@ #define STEADY_VOLUME_COUNT_SEC ( 10000 / LOAD_CELL_STEADY_VOLUME_SAMPLING_TIME ) ///< Counter must be greater than 10 seconds before steady volume is true. #define STEADY_VOLUME_DIALYSATE_PRIME_TIME_LIMIT_MS ( 90 * MS_PER_SECOND ) ///< Time in msec for the reservoir volume to stabilize during dialysate prime state. #define STEADY_VOLUME_BYPASS_PRIME_TIME_LIMIT_MS ( 62 * MS_PER_SECOND ) ///< Time in msec for the reservoir volume to stabilize during bypass dialysate prime state. -#define STEADY_VOLUME_DIALYSATE_PRIME_HISTERESIS_ML ( 0.3F ) ///< mL of histeresis for the steady state check that determines when bypass line is primed. -#define STEADY_VOLUME_BYPASS_PRIME_HISTERESIS_ML ( 0.3F ) ///< mL of histeresis for the steady state check that determines when bypass line is primed. +#define STEADY_VOLUME_DIALYSATE_PRIME_HISTERESIS_ML 0.3F ///< mL of histeresis for the steady state check that determines when bypass line is primed. +#define STEADY_VOLUME_BYPASS_PRIME_HISTERESIS_ML 0.3F ///< mL of histeresis for the steady state check that determines when bypass line is primed. +#define PRESSURE_OFFSET_DIALYSATE_PRIME_MMHG 50.0F ///< +/- offset from start pressure that defines a range to keep PBo in during dialysate dialyzer prime state. +#define DPO_RATE_STEP_PER_SEC_DIALYSATE_PRIME_ML_MIN 1 ///< DPo rate step to maintain pressure during dialysate dialyzer prime state. #define VENOUS_PRESSURE_BUBBLE_CLEAR_MAX_MMHG ( 200.0F ) ///< Maximum venous pressure reading (in mmHg) for bubble clear. #define BUBBLE_CLEAR_WAIT_TIME_INITIAL_MS ( 10 * MS_PER_SECOND ) ///< Time in msec to wait for initial bubble clear pressure. @@ -134,6 +136,8 @@ static U32 primeSalineDialyzerStartTime; ///< Starting time of priming saline dialyzer circuit. static U32 primeSalineDialyzerBubbleClearStartTime; ///< Starting time of priming saline dialyzer bubble clear. static U32 primeDialysateDialyzerStartTime; ///< Starting time of priming dialysate dialyzer circuit. +static F32 primeDialysateDialyzerStartVenPres; ///< Starting venous pressure (mmHg) for dialysate dialyzer prime state. +static U32 primeDialysateDialyzerDPoRate; ///< Record of last given DPo target rate for dialysate dialyzer prime state. static U32 primeDialysateBypassStartTime; ///< Starting time of priming dialysate bypass circuit. static U32 steadyVolumeSamplingStartTime; ///< Load cell steady volume sampling interval starting time. static F32 minimumReservoirVolume; ///< Minimum reservoir volume in mL. @@ -731,13 +735,15 @@ signalBloodPumpHardStop(); setDialInPumpTargetFlowRate( DIALYSATE_PUMP_PRIME_FLOW_RATE_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP ); setDialOutPumpTargetRate( DPO_PUMP_PRIME_FLOW_RATE_ML_MIN, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP ); + primeDialysateDialyzerDPoRate = DPO_PUMP_PRIME_FLOW_RATE_ML_MIN; // Calculate the time out value that must passed prior to checking for the steady state volume in the reservoir - primeDialysateDialyzerTimeLimit = (U32)( ( ( DIALYSATE_DIALYZER_TUBE_VOLUME_ML + dialyzerDialysateVolume ) * SEC_PER_MIN * MS_PER_SECOND ) / DIALYSATE_PUMP_PRIME_FLOW_RATE_ML_MIN ); - minimumReservoirVolume = getLoadCellWeight( LOAD_CELL_RESERVOIR_1_PRIMARY ); - steadyVolumeCount = 0; - steadyVolumeSamplingStartTime = getMSTimerCount(); - primeDialysateDialyzerStartTime = getMSTimerCount(); + primeDialysateDialyzerTimeLimit = (U32)( ( ( DIALYSATE_DIALYZER_TUBE_VOLUME_ML + dialyzerDialysateVolume ) * SEC_PER_MIN * MS_PER_SECOND ) / DIALYSATE_PUMP_PRIME_FLOW_RATE_ML_MIN ); + minimumReservoirVolume = getLoadCellWeight( LOAD_CELL_RESERVOIR_1_PRIMARY ); + steadyVolumeCount = 0; + steadyVolumeSamplingStartTime = getMSTimerCount(); + primeDialysateDialyzerStartTime = getMSTimerCount(); + primeDialysateDialyzerStartVenPres = getFilteredVenousPressure(); #ifndef _RELEASE_ if ( SW_CONFIG_ENABLE_VALUE == getSoftwareConfigStatus( SW_CONFIG_DISABLE_PRIMING ) ) @@ -782,7 +788,7 @@ { if ( TRUE == didTimeout( steadyVolumeSamplingStartTime, LOAD_CELL_STEADY_VOLUME_SAMPLING_TIME ) ) { - F32 const currentReservoirVolume = getLoadCellWeight( LOAD_CELL_RESERVOIR_1_PRIMARY ); + F32 currentReservoirVolume = getLoadCellWeight( LOAD_CELL_RESERVOIR_1_PRIMARY ); if ( currentReservoirVolume >= ( minimumReservoirVolume - STEADY_VOLUME_DIALYSATE_PRIME_HISTERESIS_ML ) ) { @@ -799,12 +805,24 @@ { minimumReservoirVolume = currentReservoirVolume; } - - steadyVolumeSamplingStartTime = getMSTimerCount(); // re-armed the timer for the next dVolume/dt check } } - else + + // Adjust DPo speed to maintain venous pressure if necessary (re-using 1 sec steady volume timer to do this @ 1Hz) + if ( TRUE == didTimeout( steadyVolumeSamplingStartTime, LOAD_CELL_STEADY_VOLUME_SAMPLING_TIME ) ) { + F32 venPres = getFilteredVenousPressure(); + + if ( venPres > ( primeDialysateDialyzerStartVenPres + PRESSURE_OFFSET_DIALYSATE_PRIME_MMHG ) ) + { + primeDialysateDialyzerDPoRate += DPO_RATE_STEP_PER_SEC_DIALYSATE_PRIME_ML_MIN; + setDialOutPumpTargetRate( primeDialysateDialyzerDPoRate, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP ); + } + else if ( venPres < ( primeDialysateDialyzerStartVenPres - PRESSURE_OFFSET_DIALYSATE_PRIME_MMHG ) ) + { + primeDialysateDialyzerDPoRate -= DPO_RATE_STEP_PER_SEC_DIALYSATE_PRIME_ML_MIN; + setDialOutPumpTargetRate( primeDialysateDialyzerDPoRate, MOTOR_DIR_FORWARD, PUMP_CONTROL_MODE_OPEN_LOOP ); + } steadyVolumeSamplingStartTime = getMSTimerCount(); } Index: firmware/App/Modes/SelfTests.c =================================================================== diff -u -rc68065fe2cfcfee46eae9d8a8af68b42b662661c -r5815db0d9a40db034fd03dba2b8960ad518a9984 --- firmware/App/Modes/SelfTests.c (.../SelfTests.c) (revision c68065fe2cfcfee46eae9d8a8af68b42b662661c) +++ firmware/App/Modes/SelfTests.c (.../SelfTests.c) (revision 5815db0d9a40db034fd03dba2b8960ad518a9984) @@ -1071,8 +1071,8 @@ { setValvePosition( VDI, VALVE_POSITION_C_CLOSE ); setValvePosition( VDO, VALVE_POSITION_C_CLOSE ); - setValvePosition( VBA, VALVE_POSITION_C_CLOSE ); - setValvePosition( VBV, VALVE_POSITION_C_CLOSE ); + setValvePosition( VBA, VALVE_POSITION_B_OPEN ); // need open path from PBA to VBT + setValvePosition( VBV, VALVE_POSITION_B_OPEN ); // need open path from PBA to VBT setValveAirTrap( STATE_OPEN ); pressureSelfTestPreNormalStartTime = getMSTimerCount(); state = DRY_SELF_TESTS_PRESSURE_SENSORS_NORMAL_SETUP_STATE;