sakthi priya amirtharaj
/
BAE_vr2_1_3
i2c working with old hk
Fork of BAE_vr2_1_1 by
Diff: HK.cpp
- Revision:
- 13:1b37d98840d3
- Parent:
- 0:8b0d43fe6c05
- Child:
- 14:ef6be8ac6569
--- a/HK.cpp Tue Dec 16 11:07:33 2014 +0000 +++ b/HK.cpp Wed Dec 17 05:25:04 2014 +0000 @@ -1,79 +1,273 @@ #include "HK.h" -DigitalOut SelectLine3 (D4); // MSB of Select Lines -DigitalOut SelectLine2 (D3); -DigitalOut SelectLine1 (D2); -DigitalOut SelectLine0 (D1); // LSB of Select Lines + MAX17048 master(A4,A5,100000);//object for battery gauge class--CHECK SDA,SCL LINES,FREQUENCY + void FUNC_BATTERYGAUGE_INIT(); -AnalogIn CurrentInput(A1); // Input from Current Multiplexer -AnalogIn VoltageInput(A2); // Input from Voltage Multiplexer -AnalogIn TemperatureInput(A3); // input from Temperature Multiplexer +//GPIO pins used=> D2-D12, A0-A1 + +DigitalOut SelectLinesA[]={D2,D3,D4,D5};//to mux1=>voltage mux +DigitalOut SelectLinesB[]={PTB18,D7,PTB19};//to mux2=>current mux(differential mux) Is this 3 or 4? +DigitalOut SelectLinesC[]={PTC0,PTC4,PTC6,PTC7};//to mux3=>temp mux + +//--------------------------------------------MSB is SelectLines[0],LSB is SelectLines[3]-------------------------------- -SensorData Sensor; -int quantiz(float start,float step,float x) +AnalogIn CurrentInput(A0); // Input from Current Mux +AnalogIn VoltageInput(A1); // Input from Voltage Multiplexer +AnalogIn TemperatureInput(A2); /*Input from Temperature Multiplexer,thermistor Multiplexer- same multiplexer for both(lines 1-4 for thermistor,line 0 for temperature sensor)*/ + + + + +int quantiz(float start,float step,float x) // accepts min and measured values and step->quantises on a scale 0-15..(4 bit quantisation) { int y=(x-start)/step; if(y<=0)y=0; if(y>=15)y=15; return y; } -ShortBeacy Shortbeacon; -void init_beacon(ShortBeacy x){ - ; -} - -void FUNC_HK_MAIN() +void init_beacon(ShortBeacy* x,SensorDataQuantised y) { - printf("\nEntered function HK MAIN\n"); + (*x).Voltage[0]=y.Vcell_soc>>4;//quantised value + (*x).Temp[0]=y.PanelTemperature[0];//quantised value + (*x).Temp[1]=y.PanelTemperature[1];//quantised value + (*x).AngularSpeed[0]=y.AngularSpeed[0]; + (*x).AngularSpeed[1]=y.AngularSpeed[1]; - Shortbeacon.Voltage[0]=1; - Shortbeacon.AngularSpeed[0]=2; - Shortbeacon.AngularSpeed[1]=3; - Shortbeacon.SubsystemStatus[0]=145; - Shortbeacon.Temp[0]=1; - Shortbeacon.Temp[1]=2; - Shortbeacon.Temp[2]=3; - Shortbeacon.ErrorFlag[0]=3; + (*x).SubsystemStatus[0]=145;//dummy values----------to be changed------------------- + (*x).ErrorFlag[0]=3;//dummy values----------to be changed------------------- +} + SensorData SensorUQ; + SensorDataQuantised SensorQuantised; + ShortBeacy Shortbeacon; + +void FUNC_HK_MAIN() +{ + //define structure variables + + + + + //initialise all selectlines to zeroes->1st line of muxes selected + SelectLinesA[0]=SelectLinesA[1]=SelectLinesA[2]=SelectLinesA[3]=0; + SelectLinesB[0]=SelectLinesB[1]=SelectLinesB[2]=0; + SelectLinesC[0]=SelectLinesC[1]=SelectLinesC[2]=SelectLinesC[3]=0; int LoopIterator; + int SelectLineIterator; + + float resistance_thermistor,voltage_thermistor;//for thermistor - SelectLine0=0; - SelectLine1=0; - SelectLine2=0; - SelectLine3=0; + //measurement from voltage sensor=> 16 sensors in place + for(LoopIterator=0; LoopIterator<16; LoopIterator++) +{ + //following lines read the sensor values and stores them in 'SensorData' structure's variable 'Sensor' + SensorUQ.Voltage[LoopIterator]=(VoltageInput.read()*3.3*5.545454);//resistors in voltage divider=>15Mohm,3.3Mohm + + if(LoopIterator%2==0) + SensorQuantised.Voltage[LoopIterator/2]=quantiz(vstart,vstep,SensorUQ.Voltage[LoopIterator]); + + else + SensorQuantised.Voltage[(LoopIterator)/2]=SensorQuantised.Voltage[(LoopIterator)/2]<<4+quantiz(vstart,vstep,SensorUQ.Voltage[LoopIterator]); + + + + // The following lines are used to iterate the select lines from 0 to 15 + //following is an algorithm similar to counting binary numbers of 4 bit + for(SelectLineIterator=3;SelectLineIterator>=0;SelectLineIterator--) + { + if(SelectLinesA[SelectLineIterator]==0) + { + SelectLinesA[SelectLineIterator]=1; + break; + } + else SelectLinesA[SelectLineIterator]=0; + + } + + + wait_us(10.0); // A delay of 10 microseconds between each sensor output. Can be changed. - for(LoopIterator=0; LoopIterator<16; LoopIterator++) { + } + + + + + + //measurement from current sensor=> 8 sensors in place + + for(LoopIterator=0; LoopIterator<8; LoopIterator++) +{ + //following lines read the sensor values and stores them in 'SensorData' structure variable 'Sensor' + SensorUQ.Current[LoopIterator]=(CurrentInput.read()*3.3/(50*rsens)); + if(LoopIterator%2==0) + SensorQuantised.Current[LoopIterator/2]=quantiz(cstart,cstep,SensorUQ.Current[LoopIterator]); + else + SensorQuantised.Current[(LoopIterator)/2]=SensorQuantised.Current[(LoopIterator)/2]<<4+quantiz(cstart,cstep,SensorUQ.Current[LoopIterator]); + - if(LoopIterator%2==0) { - Sensor.Current[LoopIterator/2]=quantiz(cstart,cstep,((CurrentInput.read()*3.18)/(50*rsens))); - Sensor.Voltage[LoopIterator/2]=quantiz(vstart,vstep,(VoltageInput.read()*3.18*5.37)); - Sensor.Temperature[LoopIterator/2]=quantiz(tstart,tstep,(-90.7*3.18*TemperatureInput.read()+190.1543)); - } else { - Sensor.Current[(LoopIterator-1)/2]=(Sensor.Current[(LoopIterator-1)/2]<<4)+quantiz(cstart,cstep,((CurrentInput.read()*3.18)/(50*rsens))); - Sensor.Voltage[(LoopIterator-1)/2]=(Sensor.Voltage[(LoopIterator-1)/2]<<4)+quantiz(vstart,vstep,(VoltageInput.read()*3.18*5.37)); - Sensor.Temperature[(LoopIterator-1)/2]=(Sensor.Temperature[(LoopIterator-1)/2]<<4)+quantiz(tstart,tstep,(-90.7*3.18*TemperatureInput.read()+190.1543)); + // The following lines are used to iterate the select lines from 0 to 7 + //following is an algorithm similar to counting binary numbers of 3 bits + for(SelectLineIterator=2;SelectLineIterator>=0;SelectLineIterator--) + { + if(SelectLinesB[SelectLineIterator]==0) + { + SelectLinesB[SelectLineIterator]=1; + break; + } + else SelectLinesB[SelectLineIterator]=0; + } -// The following lines are used to iterate the select lines from 0 to 15 - SelectLine0=!(SelectLine0); - - if(LoopIterator%2==1) - SelectLine1=!(SelectLine1); - - if(LoopIterator%4==3) - SelectLine2=!(SelectLine2); - - if(LoopIterator%8==7) - SelectLine3=!(SelectLine3); - + + wait_us(10.0); // A delay of 10 microseconds between each sensor output. Can be changed. +} + + +//measurement of temperature +//temperature measurement=> 4 thermistors, 1 temperature sensor +//mux line 1=>temp sensor, mux lines 2 to 5 =>thermistors + + for(LoopIterator=0; LoopIterator<5; LoopIterator++) +{ + //following lines read the sensor values and stores them in 'SensorData' structure variable 'Sensor' + SensorUQ.Temperature[LoopIterator]=(-90.7*3.3*TemperatureInput.read()+190.1543); + voltage_thermistor=TemperatureInput.read()*3.3;//voltage across thermistor + resistance_thermistor=24000*voltage_thermistor/(3.3-voltage_thermistor);//resistance of thermistor + //PanelTemperature will be updated depending on voltage_thermistor value later in the lines to follow + + if(LoopIterator%2==0) + { + if(LoopIterator<1) //->corresponding to temperature sensor + SensorQuantised.Temperature[(LoopIterator)/2]=quantiz(tstart,tstep,SensorUQ.Temperature[LoopIterator]); + + else //->corresponding to thermistor + { + if(voltage_thermistor<1.378) //Temperature>12 degC + SensorUQ.PanelTemperature[(LoopIterator-1)]=(3694/log(24.032242*resistance_thermistor)); + + else + SensorUQ.PanelTemperature[(LoopIterator-1)]=(3365.4792/log(7.60404*resistance_thermistor)); + + + SensorQuantised.PanelTemperature[(LoopIterator-1)/2]=quantiz(tstart_thermistor,tstep_thermistor,SensorUQ.PanelTemperature[(LoopIterator-1)]); + + } + + } + + else + { + if(LoopIterator<1) + SensorQuantised.Temperature[(LoopIterator)/2]=SensorQuantised.Temperature[(LoopIterator)/2]<<4+quantiz(tstart,tstep,SensorUQ.Temperature[LoopIterator]); + + else + { + if(voltage_thermistor<1.378) //Temperature>12 degC + SensorUQ.PanelTemperature[LoopIterator-1]=(3694/log(24.032242*resistance_thermistor)); + + + else + SensorUQ.PanelTemperature[LoopIterator-1]=(3365.4792/log(7.60404*resistance_thermistor)); + + SensorQuantised.PanelTemperature[(LoopIterator-1)/2]=SensorQuantised.PanelTemperature[(LoopIterator-1)/2]<<4+quantiz(tstart_thermistor,tstep_thermistor,SensorUQ.PanelTemperature[LoopIterator-1]); + + } + + } + + + + +// The following lines are used to iterate the select lines from 0 to 4 + + //following is an algorithm similar to counting binary numbers of 4 bit + for(SelectLineIterator=3;SelectLineIterator>=0;SelectLineIterator--) + { + if(SelectLinesC[SelectLineIterator]==0) + { + SelectLinesC[SelectLineIterator]=1; + break; + } + else SelectLinesC[SelectLineIterator]=0; + + } + + + wait_us(10.0); // A delay of 10 microseconds between each sensor output. Can be changed. + +} + + + + //update battery gauge parameters-> + float batteryparameters[4];//to populate battery parameters of struct variable Sensor + FUNC_BATTERYGAUGE_MAIN(batteryparameters);//passing array to function + + SensorUQ.Vcell=batteryparameters[0]; + SensorUQ.soc=batteryparameters[1]; + SensorUQ.crate=batteryparameters[2]; + SensorUQ.alerts=batteryparameters[3]; + + SensorQuantised.Vcell_soc=quantiz(Vcell_start,Vcell_step,SensorUQ.Vcell); + SensorQuantised.Vcell_soc=SensorQuantised.Vcell_soc<<4+quantiz(soc_start,soc_step,SensorUQ.soc); + SensorQuantised.alerts=SensorUQ.alerts; + SensorQuantised.crate=quantiz(crate_start,crate_step,SensorUQ.crate); + + + //update magnetometer data-> + //populate values in structure variable 'Sensor' from data to be given by Green + SensorQuantised.AngularSpeed[0]=quantiz(AngularSpeed_start,AngularSpeed_step,SensorUQ.AngularSpeed[1]); + SensorQuantised.AngularSpeed[0]=SensorQuantised.AngularSpeed[0]<<4+quantiz(AngularSpeed_start,AngularSpeed_step,SensorUQ.AngularSpeed[0]); + SensorQuantised.AngularSpeed[1]=quantiz(AngularSpeed_start,AngularSpeed_step,SensorUQ.AngularSpeed[2]); + + //update gyro data-> + //populate values in structure variable 'Sensor' from data to be given by Green + SensorQuantised.Bnewvalue[0]=quantiz(Bnewvalue_start,Bnewvalue_step,SensorUQ.Bnewvalue[1]); + SensorQuantised.Bnewvalue[0]=SensorQuantised.Bnewvalue[0]<<4+quantiz(Bnewvalue_start,Bnewvalue_step,SensorUQ.Bnewvalue[0]); + SensorQuantised.Bnewvalue[1]=quantiz(Bnewvalue_start,Bnewvalue_step,SensorUQ.Bnewvalue[2]); + + + + + //update beacon structure + init_beacon(&Shortbeacon,SensorQuantised);//Shortbeacon is passed + + +} + + +void FUNC_BATTERYGAUGE_MAIN(float array[]) +{ + float vcell=master.vcell(); + float soc=master.soc(); + float crate=master.crate(); + + printf("\nVcell=%f",vcell); + printf("\nSOC=%f",soc); + printf("\nC_rate=%f",crate); + + array[0]=vcell; + array[1]=soc; + array[2]=crate; + if (master.alerting()== true) //alert is on + { + array[3]=master.alertFlags(); + master.clearAlert();//clear alert + master.clearAlertFlags();//clear all alert flags } - - printf("\nVoltage is %u\n",Shortbeacon.Voltage[0]); - printf("\nCurrent is %u\n",Shortbeacon.Temp[0]); - + - - printf("\nExited function HK MAIN\n"); } + +void FUNC_BATTERYGAUGE_INIT() +{ + master.disable_sleep(); + master.disable_hibernate(); + master.socChangeAlertEnabled(true);//enabling alert on soc changing by 1% + master.emptyAlertThreshold(1);//giving minimum value to disable it to disabling it---------------------- + master.vAlertMinMaxThreshold();//set min, max value of Valrt register + master.vResetThresholdSet();//set threshold voltage for reset + master.vResetAlertEnabled(true);//enable alert on reset for V < Vreset +} \ No newline at end of file