Team Fox / Mbed 2 deprecated QM_BAE_review_1_EPS_updated

Updated EPS code with flowchart v2.3 (CDMS and HW faults)

Dependencies:   FreescaleIAP mbed-rtos mbed

Fork of QM_BAE_review_1_EPS_faults by Mohamed Azad

EPS.cpp@17:bb0d64656ba1, 2016-06-23 (annotated)

Committer:
azaddevarm
Date:
Thu Jun 23 12:14:28 2016 +0000
Revision:
17:bb0d64656ba1
Parent:
16:5f0f2a3f3e8d 
Updated EPS code with flowchart v2.3

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sakthipriya 0:7b4c00e3912f 1 #include "EPS.h"
sakthipriya 0:7b4c00e3912f 2 #include "pin_config.h"
sakthipriya 6:036d08b62785 3 #include "iostream"
sakthipriya 0:7b4c00e3912f 4 /***********************************************global variable declaration***************************************************************/
sakthipriya 0:7b4c00e3912f 5 extern uint32_t BAE_STATUS;
sakthipriya 0:7b4c00e3912f 6 extern uint32_t BAE_ENABLE;
sakthipriya 6:036d08b62785 7 extern uint8_t BAE_data[74];
sakthipriya 6:036d08b62785 8 extern char BAE_chardata[74];
sakthipriya 0:7b4c00e3912f 9
sakthipriya 0:7b4c00e3912f 10 //m_I2C.frequency(10000)
lakshya 15:e09aaaccf134 11 const char RCOMP0= 0x97;// don't know what it is now
sakthipriya 0:7b4c00e3912f 12 BAE_HK_actual actual_data;
sakthipriya 0:7b4c00e3912f 13 BAE_HK_quant quant_data;
sakthipriya 0:7b4c00e3912f 14 BAE_HK_min_max bae_HK_minmax;
sakthipriya 0:7b4c00e3912f 15 BAE_HK_arch arch_data;
sakthipriya 0:7b4c00e3912f 16
sakthipriya 5:bb592f3185cc 17
sakthipriya 0:7b4c00e3912f 18 //......................................Peripheral declarations.........................................................//
sakthipriya 0:7b4c00e3912f 19 Serial pc_eps(USBTX,USBRX);
sakthipriya 3:07e15677a75c 20
sakthipriya 0:7b4c00e3912f 21 I2C m_I2C(PIN85,PIN84);
sakthipriya 0:7b4c00e3912f 22 DigitalOut TRXY(TRXY_DR_EN); //active high
sakthipriya 0:7b4c00e3912f 23 DigitalOut TRZ(TRZ_DR_EN); //active high
sakthipriya 0:7b4c00e3912f 24 DigitalOut EN3V3A(ENBL3V3A);
sakthipriya 0:7b4c00e3912f 25 DigitalOut EN_BTRY_HT(BATT_HEAT);
sakthipriya 0:7b4c00e3912f 26 //DigitalIn BTRY_HT_OUTPUT(BATT_HEAT_OUTPUT);
sakthipriya 3:07e15677a75c 27 //AnalogIn Vbatt_ang(VBATT);
sakthipriya 3:07e15677a75c 28 AnalogIn Batt_voltage(PIN20); //Battery voltage
sakthipriya 3:07e15677a75c 29
lakshya 15:e09aaaccf134 30 SPI spi_bt(PIN99,PIN100,PIN98); //MOSI,MISO,SLK // battery temp something 3
lakshya 15:e09aaaccf134 31 DigitalOut ssn1(PIN19); //Slave select1 // low line master talks
sakthipriya 2:c823d84b4cb0 32 DigitalOut ssn2(PIN21);//Slave select2
sakthipriya 2:c823d84b4cb0 33 //DigitalOut PS(PTB0);
sakthipriya 2:c823d84b4cb0 34 //DigitalOut HS(PTB1);
sakthipriya 2:c823d84b4cb0 35
sakthipriya 3:07e15677a75c 36 AnalogIn CurrentInput(PIN54); // Input from Current Multiplexer //PIN54
sakthipriya 3:07e15677a75c 37 AnalogIn VoltageInput(PIN53); // Input from Voltage Multiplexer //PIN53
sakthipriya 3:07e15677a75c 38 AnalogIn BAE_temp_sensor(PIN55); //Input from BAE temp sensor
sakthipriya 3:07e15677a75c 39
lakshya 15:e09aaaccf134 40 /*mux for reading value one by one*/
sakthipriya 3:07e15677a75c 41 DigitalOut SelectLinea3 (PIN46); // MSB of Select Lines
sakthipriya 3:07e15677a75c 42 DigitalOut SelectLinea2 (PIN45);
sakthipriya 3:07e15677a75c 43 DigitalOut SelectLinea1 (PIN44);
sakthipriya 3:07e15677a75c 44 DigitalOut SelectLinea0 (PIN43); // LSB of Select Lines
sakthipriya 3:07e15677a75c 45
sakthipriya 3:07e15677a75c 46 DigitalOut SelectLineb3 (PIN56); // MSB of Select Lines
sakthipriya 3:07e15677a75c 47 DigitalOut SelectLineb2 (PIN57);
sakthipriya 3:07e15677a75c 48 DigitalOut SelectLineb1 (PIN58);
sakthipriya 3:07e15677a75c 49 DigitalOut SelectLineb0 (PIN59); // LSB of Select Lines
sakthipriya 0:7b4c00e3912f 50
sakthipriya 0:7b4c00e3912f 51 //*********************************************************flags********************************************************//
azaddevarm 17:bb0d64656ba1 52 extern uint8_t EPS_INIT_STATUS ;
azaddevarm 17:bb0d64656ba1 53 extern uint8_t EPS_BATTERY_GAUGE_STATUS ;
azaddevarm 17:bb0d64656ba1 54 extern uint8_t EPS_MAIN_STATUS;
azaddevarm 17:bb0d64656ba1 55 extern uint8_t EPS_BATTERY_TEMP_STATUS ;
azaddevarm 17:bb0d64656ba1 56 extern uint8_t EPS_STATUS ;
sakthipriya 0:7b4c00e3912f 57
azaddevarm 17:bb0d64656ba1 58 extern uint8_t EPS_BATTERY_HEATER_ENABLE ;
sakthipriya 0:7b4c00e3912f 59
azaddevarm 16:5f0f2a3f3e8d 60 //eps cdms fault
azaddevarm 16:5f0f2a3f3e8d 61 extern uint8_t CDMS_SW_STATUS;
azaddevarm 16:5f0f2a3f3e8d 62 extern bool CDMS_OC_FAULT;
azaddevarm 16:5f0f2a3f3e8d 63 extern bool CDMS_SW_ENABLE;
azaddevarm 16:5f0f2a3f3e8d 64 extern int CDMS_FAULT_COUNTER;
azaddevarm 16:5f0f2a3f3e8d 65
azaddevarm 16:5f0f2a3f3e8d 66 //eps hw faults
azaddevarm 16:5f0f2a3f3e8d 67
azaddevarm 16:5f0f2a3f3e8d 68 extern uint8_t ACS_TR_Z_SW_STATUS;
azaddevarm 16:5f0f2a3f3e8d 69 extern bool ACS_TR_Z_ENABLE;
azaddevarm 16:5f0f2a3f3e8d 70 extern bool ACS_TR_Z_OC_FAULT;
azaddevarm 16:5f0f2a3f3e8d 71 extern bool ACS_TR_Z_FAULT; //Driver IC fault
azaddevarm 16:5f0f2a3f3e8d 72 extern int ACS_TR_Z_FAULT_COUNTER;
azaddevarm 16:5f0f2a3f3e8d 73
azaddevarm 16:5f0f2a3f3e8d 74 extern uint8_t ACS_TR_XY_SW_STATUS;
azaddevarm 16:5f0f2a3f3e8d 75 extern bool ACS_TR_XY_ENABLE;
azaddevarm 16:5f0f2a3f3e8d 76 extern bool ACS_TR_XY_OC_FAULT;
azaddevarm 16:5f0f2a3f3e8d 77 extern bool ACS_TR_XY_FAULT; //Driver IC fault
azaddevarm 16:5f0f2a3f3e8d 78 extern int ACS_TR_XY_FAULT_COUNTER;
azaddevarm 16:5f0f2a3f3e8d 79
azaddevarm 16:5f0f2a3f3e8d 80 extern uint8_t ACS_ATS1_SW_STATUS;
azaddevarm 16:5f0f2a3f3e8d 81 extern bool ACS_ATS1_ENABLE;
azaddevarm 16:5f0f2a3f3e8d 82 extern bool ACS_ATS1_OC_FAULT;
azaddevarm 16:5f0f2a3f3e8d 83 extern int ACS_ATS1_FAULT_COUNTER;
azaddevarm 16:5f0f2a3f3e8d 84
azaddevarm 16:5f0f2a3f3e8d 85 extern uint8_t ACS_ATS2_SW_STATUS;
azaddevarm 16:5f0f2a3f3e8d 86 extern bool ACS_ATS2_ENABLE;
azaddevarm 16:5f0f2a3f3e8d 87 extern bool ACS_ATS2_OC_FAULT;
azaddevarm 16:5f0f2a3f3e8d 88 extern int ACS_ATS2_FAULT_COUNTER;
azaddevarm 16:5f0f2a3f3e8d 89
azaddevarm 16:5f0f2a3f3e8d 90 extern uint8_t BCN_TX_SW_STATUS;
azaddevarm 16:5f0f2a3f3e8d 91 extern bool BCN_TX_ENABLE;
azaddevarm 16:5f0f2a3f3e8d 92 extern bool BCN_TX_OC_FAULT;
azaddevarm 16:5f0f2a3f3e8d 93 extern int BCN_TX_FAULT_COUNTER;
azaddevarm 16:5f0f2a3f3e8d 94
azaddevarm 16:5f0f2a3f3e8d 95
sakthipriya 0:7b4c00e3912f 96 //........................................... FUCTIONS.................................................//
sakthipriya 0:7b4c00e3912f 97
sakthipriya 0:7b4c00e3912f 98 void FCTN_EPS_INIT()
sakthipriya 0:7b4c00e3912f 99 {
sakthipriya 0:7b4c00e3912f 100 printf("\n\r eps init \n");
azaddevarm 17:bb0d64656ba1 101 EPS_INIT_STATUS = 1 ; //set EPS_INIT_STATUS flag
sakthipriya 3:07e15677a75c 102 // FLAG();
sakthipriya 0:7b4c00e3912f 103 FCTN_BATTERYGAUGE_INIT();
sakthipriya 0:7b4c00e3912f 104 EN3V3A = 1; //enable dc dc converter A
lakshya 15:e09aaaccf134 105 char value=alertFlags(); // initialization part of battery gauge
sakthipriya 0:7b4c00e3912f 106 unsigned short value_u= (short int )value;
sakthipriya 0:7b4c00e3912f 107 value_u &=0x0001;
sakthipriya 0:7b4c00e3912f 108 if(value_u ==0x0001) // battery gauge not initialised
sakthipriya 0:7b4c00e3912f 109 {
sakthipriya 0:7b4c00e3912f 110 actual_data.power_mode = 1;
azaddevarm 17:bb0d64656ba1 111 EPS_BATTERY_GAUGE_STATUS = 0; //clear EPS_BATTERY_GAUGE_STATUS
sakthipriya 0:7b4c00e3912f 112 }
sakthipriya 0:7b4c00e3912f 113 else
sakthipriya 0:7b4c00e3912f 114 {
sakthipriya 0:7b4c00e3912f 115 actual_data.Batt_gauge_actual[1] = soc();
lakshya 15:e09aaaccf134 116 actual_data.Batt_voltage_actual = Batt_voltage.read()*3.3; //1 corresponds to 3.3 scaling factor
sakthipriya 0:7b4c00e3912f 117 FCTN_EPS_POWERMODE(actual_data.Batt_gauge_actual[1]);
azaddevarm 17:bb0d64656ba1 118 EPS_BATTERY_GAUGE_STATUS = 1; //set EPS_BATTERY_GAUGE_STATUS
sakthipriya 0:7b4c00e3912f 119 }
sakthipriya 0:7b4c00e3912f 120
azaddevarm 17:bb0d64656ba1 121 FCTN_BATTTEMP_INIT();
azaddevarm 17:bb0d64656ba1 122 EPS_BATTERY_GAUGE_STATUS = 1;
azaddevarm 17:bb0d64656ba1 123
azaddevarm 17:bb0d64656ba1 124 EPS_INIT_STATUS = 0 ; //clear EPS_INIT_STATUS flag
sakthipriya 0:7b4c00e3912f 125
sakthipriya 0:7b4c00e3912f 126 }
sakthipriya 0:7b4c00e3912f 127
azaddevarm 16:5f0f2a3f3e8d 128 void FCTN_EPS_HANDLE_CDMS_FAULT()
azaddevarm 16:5f0f2a3f3e8d 129 { //Variable names from MMS structure, if not, marked as //Temp name
azaddevarm 16:5f0f2a3f3e8d 130 if(CDMS_SW_STATUS == 0b11) //powered on and oc fault
azaddevarm 16:5f0f2a3f3e8d 131 if(!CDMS_OC_FAULT)
azaddevarm 16:5f0f2a3f3e8d 132 CDMS_SW_STATUS = 0b01; //powered on and working
azaddevarm 16:5f0f2a3f3e8d 133 else
azaddevarm 16:5f0f2a3f3e8d 134 {
azaddevarm 16:5f0f2a3f3e8d 135 if(CDMS_SW_STATUS == 0b10) //powered off and oc fault
azaddevarm 16:5f0f2a3f3e8d 136 CDMS_SW_ENABLE = 1; //Temp name
azaddevarm 16:5f0f2a3f3e8d 137 if(CDMS_OC_FAULT == 0)
azaddevarm 16:5f0f2a3f3e8d 138 {
azaddevarm 16:5f0f2a3f3e8d 139 CDMS_FAULT_COUNTER = 0; //Temp name
azaddevarm 16:5f0f2a3f3e8d 140 CDMS_SW_STATUS = 0b01; //powered on and working
azaddevarm 16:5f0f2a3f3e8d 141 }
azaddevarm 16:5f0f2a3f3e8d 142 else
azaddevarm 16:5f0f2a3f3e8d 143 {
azaddevarm 16:5f0f2a3f3e8d 144 CDMS_FAULT_COUNTER++;
azaddevarm 16:5f0f2a3f3e8d 145 if(CDMS_FAULT_COUNTER == 3)
azaddevarm 16:5f0f2a3f3e8d 146 CDMS_SW_STATUS = 0b11; //powered on and oc fault
azaddevarm 16:5f0f2a3f3e8d 147 else
azaddevarm 16:5f0f2a3f3e8d 148 {
azaddevarm 16:5f0f2a3f3e8d 149 CDMS_SW_ENABLE = 0; //power OFF switch
azaddevarm 16:5f0f2a3f3e8d 150 CDMS_SW_STATUS = 0b10; //powered off and oc fault
azaddevarm 16:5f0f2a3f3e8d 151 }
azaddevarm 16:5f0f2a3f3e8d 152 }
azaddevarm 16:5f0f2a3f3e8d 153 }
azaddevarm 16:5f0f2a3f3e8d 154 }
azaddevarm 16:5f0f2a3f3e8d 155
azaddevarm 16:5f0f2a3f3e8d 156 void FCTN_EPS_HANDLE_HW_FAULTS()
azaddevarm 16:5f0f2a3f3e8d 157 { //Variable names from MMS structure, if not, marked as //Temp name
azaddevarm 16:5f0f2a3f3e8d 158
azaddevarm 16:5f0f2a3f3e8d 159 //--------ACS_TR_Z--------//
azaddevarm 16:5f0f2a3f3e8d 160 if(ACS_TR_Z_SW_STATUS != 0b11) //!disabled
azaddevarm 16:5f0f2a3f3e8d 161 {
azaddevarm 16:5f0f2a3f3e8d 162 if(ACS_TR_Z_SW_STATUS == 0b10) //oc fault and powered off
azaddevarm 16:5f0f2a3f3e8d 163 ACS_TR_Z_ENABLE = 1;
azaddevarm 16:5f0f2a3f3e8d 164 if(ACS_TR_Z_OC_FAULT || ACS_TR_Z_FAULT)
azaddevarm 16:5f0f2a3f3e8d 165 {
azaddevarm 16:5f0f2a3f3e8d 166 ACS_TR_Z_ENABLE = 0;
azaddevarm 16:5f0f2a3f3e8d 167 ACS_TR_Z_FAULT_COUNTER++; //Temp name
azaddevarm 16:5f0f2a3f3e8d 168 if(ACS_TR_Z_FAULT_COUNTER == 3)
azaddevarm 16:5f0f2a3f3e8d 169 ACS_TR_Z_SW_STATUS = 0b11; //disabled
azaddevarm 16:5f0f2a3f3e8d 170 //update in flash as default state at bootup
azaddevarm 16:5f0f2a3f3e8d 171 else ACS_TR_Z_SW_STATUS = 0b10; //oc fault and powered off
azaddevarm 16:5f0f2a3f3e8d 172 }
azaddevarm 16:5f0f2a3f3e8d 173 else
azaddevarm 16:5f0f2a3f3e8d 174 {
azaddevarm 16:5f0f2a3f3e8d 175 ACS_TR_Z_SW_STATUS = 0b01; //powered on and working;
azaddevarm 16:5f0f2a3f3e8d 176 //update in flash also
azaddevarm 16:5f0f2a3f3e8d 177 ACS_TR_Z_FAULT_COUNTER = 0;
azaddevarm 16:5f0f2a3f3e8d 178 }
azaddevarm 16:5f0f2a3f3e8d 179 }
azaddevarm 16:5f0f2a3f3e8d 180
azaddevarm 16:5f0f2a3f3e8d 181 //--------ACS_TR_XY--------//
azaddevarm 16:5f0f2a3f3e8d 182 //Same as ACS_TR_Z, just replace Z with XY
azaddevarm 16:5f0f2a3f3e8d 183
azaddevarm 16:5f0f2a3f3e8d 184 //--------ACS_ATS1--------//
azaddevarm 16:5f0f2a3f3e8d 185 //Same as ACS_ATS2
azaddevarm 16:5f0f2a3f3e8d 186
azaddevarm 16:5f0f2a3f3e8d 187 //--------ACS_ATS2--------//
azaddevarm 16:5f0f2a3f3e8d 188 if(ACS_ATS2_SW_STATUS & 0b1100 != 0b1100) //!disabled
azaddevarm 16:5f0f2a3f3e8d 189 {
azaddevarm 16:5f0f2a3f3e8d 190 if(ACS_ATS2_SW_STATUS & 0b1100 == 0b1000) //oc fault and powered off
azaddevarm 16:5f0f2a3f3e8d 191 ACS_ATS2_ENABLE = 1; //Temp name
azaddevarm 16:5f0f2a3f3e8d 192 if(ACS_ATS2_OC_FAULT)
azaddevarm 16:5f0f2a3f3e8d 193 {
azaddevarm 16:5f0f2a3f3e8d 194 ACS_ATS2_ENABLE = 0;
azaddevarm 16:5f0f2a3f3e8d 195 ACS_ATS2_FAULT_COUNTER++; //Temp name
azaddevarm 16:5f0f2a3f3e8d 196 if(ACS_ATS2_FAULT_COUNTER == 3)
azaddevarm 16:5f0f2a3f3e8d 197 ACS_ATS2_SW_STATUS = ACS_ATS2_SW_STATUS | 0b1100; //disabled
azaddevarm 16:5f0f2a3f3e8d 198 //update in flash as default state at bootup
azaddevarm 16:5f0f2a3f3e8d 199 else
azaddevarm 16:5f0f2a3f3e8d 200 {
azaddevarm 16:5f0f2a3f3e8d 201 ACS_ATS2_SW_STATUS = ACS_ATS2_SW_STATUS | 0b1000; //setting to 10xx
azaddevarm 16:5f0f2a3f3e8d 202 ACS_ATS2_SW_STATUS = ACS_ATS2_SW_STATUS & 0b1011; //oc fault and powered off
azaddevarm 16:5f0f2a3f3e8d 203 }
azaddevarm 16:5f0f2a3f3e8d 204 }
azaddevarm 16:5f0f2a3f3e8d 205 else
azaddevarm 16:5f0f2a3f3e8d 206 {
azaddevarm 16:5f0f2a3f3e8d 207 if(ACS_ATS2_SW_STATUS & 0b1100 == 0b1000) //Device oc fault?
azaddevarm 16:5f0f2a3f3e8d 208 ACS_ATS2_ENABLE = 0;
azaddevarm 16:5f0f2a3f3e8d 209 ACS_ATS2_SW_STATUS = ACS_ATS2_SW_STATUS & 0b0011; //working but powered off
azaddevarm 16:5f0f2a3f3e8d 210 //Update in flash also
azaddevarm 16:5f0f2a3f3e8d 211 ACS_ATS2_FAULT_COUNTER = 0;
azaddevarm 16:5f0f2a3f3e8d 212 }
azaddevarm 16:5f0f2a3f3e8d 213 }
azaddevarm 16:5f0f2a3f3e8d 214
azaddevarm 16:5f0f2a3f3e8d 215 //--------BCN_TX----------//
azaddevarm 16:5f0f2a3f3e8d 216 if(BCN_TX_SW_STATUS != 0b11) //!disabled
azaddevarm 16:5f0f2a3f3e8d 217 {
azaddevarm 16:5f0f2a3f3e8d 218 if(BCN_TX_SW_STATUS == 0b10) //oc fault and powered off
azaddevarm 16:5f0f2a3f3e8d 219 BCN_TX_ENABLE = 1; //Temp name
azaddevarm 16:5f0f2a3f3e8d 220 if(BCN_TX_OC_FAULT)
azaddevarm 16:5f0f2a3f3e8d 221 {
azaddevarm 16:5f0f2a3f3e8d 222 BCN_TX_ENABLE = 0;
azaddevarm 16:5f0f2a3f3e8d 223 BCN_TX_FAULT_COUNTER++; //Temp name
azaddevarm 16:5f0f2a3f3e8d 224 if(BCN_TX_FAULT_COUNTER == 3)
azaddevarm 16:5f0f2a3f3e8d 225 BCN_TX_SW_STATUS = 0b11; //disabled
azaddevarm 16:5f0f2a3f3e8d 226 //update in flash as default state at bootup
azaddevarm 16:5f0f2a3f3e8d 227 else BCN_TX_SW_STATUS = 0b10; //oc fault and powered off
azaddevarm 16:5f0f2a3f3e8d 228 }
azaddevarm 16:5f0f2a3f3e8d 229 else
azaddevarm 16:5f0f2a3f3e8d 230 {
azaddevarm 16:5f0f2a3f3e8d 231 BCN_TX_SW_STATUS = 0b01; //powered on and working;
azaddevarm 16:5f0f2a3f3e8d 232 //update in flash also
azaddevarm 16:5f0f2a3f3e8d 233 BCN_TX_FAULT_COUNTER = 0;
azaddevarm 16:5f0f2a3f3e8d 234 }
azaddevarm 16:5f0f2a3f3e8d 235 }
azaddevarm 16:5f0f2a3f3e8d 236
azaddevarm 16:5f0f2a3f3e8d 237 }
azaddevarm 16:5f0f2a3f3e8d 238
sakthipriya 0:7b4c00e3912f 239 //----------------------------------------------------Power algo code--------------------------------------------------------------------//
lakshya 15:e09aaaccf134 240 /*update the power modes*/
lakshya 15:e09aaaccf134 241
sakthipriya 0:7b4c00e3912f 242 void FCTN_EPS_POWERMODE(float soc) //dummy algo
sakthipriya 0:7b4c00e3912f 243 {
sakthipriya 0:7b4c00e3912f 244 if(soc >= 80)
sakthipriya 0:7b4c00e3912f 245 actual_data.power_mode = 4;
sakthipriya 0:7b4c00e3912f 246 else if(soc >= 70 & soc < 80)
sakthipriya 0:7b4c00e3912f 247 actual_data.power_mode = 3;
sakthipriya 0:7b4c00e3912f 248 else if(soc >= 60 & soc < 70)
sakthipriya 0:7b4c00e3912f 249 actual_data.power_mode = 2;
sakthipriya 0:7b4c00e3912f 250 else if(soc < 60)
sakthipriya 0:7b4c00e3912f 251 actual_data.power_mode = 1;
sakthipriya 0:7b4c00e3912f 252 }
sakthipriya 0:7b4c00e3912f 253
sakthipriya 0:7b4c00e3912f 254 //...................................................HK...........................................//
lakshya 15:e09aaaccf134 255 /*reading values*/
sakthipriya 3:07e15677a75c 256
sakthipriya 3:07e15677a75c 257 void FCTN_HK_MAIN()
sakthipriya 3:07e15677a75c 258 {
sakthipriya 3:07e15677a75c 259 int Iteration=0;
sakthipriya 3:07e15677a75c 260
sakthipriya 3:07e15677a75c 261 SelectLinea0=0;
sakthipriya 3:07e15677a75c 262 SelectLinea1=0;
sakthipriya 3:07e15677a75c 263 SelectLinea2=0;
sakthipriya 3:07e15677a75c 264 SelectLinea3=0;
sakthipriya 3:07e15677a75c 265
sakthipriya 3:07e15677a75c 266 SelectLineb0=0;
sakthipriya 3:07e15677a75c 267 SelectLineb1=0;
sakthipriya 3:07e15677a75c 268 SelectLineb2=0;
sakthipriya 3:07e15677a75c 269 SelectLineb3=0;
sakthipriya 3:07e15677a75c 270
sakthipriya 3:07e15677a75c 271 //collecting data
azaddevarm 17:bb0d64656ba1 272 for(Iteration=0; Iteration<16; Iteration++)
azaddevarm 17:bb0d64656ba1 273 {
sakthipriya 3:07e15677a75c 274 actual_data.voltage_actual[Iteration]=VoltageInput.read();
sakthipriya 3:07e15677a75c 275 actual_data.current_actual[Iteration]=CurrentInput.read();
sakthipriya 3:07e15677a75c 276
sakthipriya 3:07e15677a75c 277 SelectLinea0=!(SelectLinea0);
sakthipriya 3:07e15677a75c 278 if(Iteration%2==1)
sakthipriya 3:07e15677a75c 279 SelectLinea1=!(SelectLinea1);
sakthipriya 3:07e15677a75c 280 if(Iteration%4==3)
sakthipriya 3:07e15677a75c 281 SelectLinea2=!(SelectLinea2);
sakthipriya 3:07e15677a75c 282 if(Iteration%8==7)
sakthipriya 3:07e15677a75c 283 SelectLinea3=!(SelectLinea3);
sakthipriya 3:07e15677a75c 284 int s0,s1,s2,s3;
sakthipriya 3:07e15677a75c 285 s0=SelectLineb0=SelectLinea0;
sakthipriya 3:07e15677a75c 286 s1=SelectLineb1=SelectLinea2;
sakthipriya 3:07e15677a75c 287 s2=SelectLineb2=SelectLinea2;
sakthipriya 3:07e15677a75c 288 s3=SelectLineb3=SelectLinea3;
sakthipriya 3:07e15677a75c 289 printf("\n\r %d %d %d %d", s0,s1,s2,s3);
sakthipriya 3:07e15677a75c 290
sakthipriya 3:07e15677a75c 291 }
azaddevarm 17:bb0d64656ba1 292 for(Iteration=0; Iteration<16; Iteration++)
azaddevarm 17:bb0d64656ba1 293 {
sakthipriya 3:07e15677a75c 294 if(Iteration==14)
sakthipriya 3:07e15677a75c 295 actual_data.voltage_actual[Iteration]= (-90.7*3.3*actual_data.voltage_actual[Iteration])+190.1543;
sakthipriya 3:07e15677a75c 296 else
sakthipriya 3:07e15677a75c 297 actual_data.voltage_actual[Iteration]= actual_data.voltage_actual[Iteration]*3.3*5.63;
sakthipriya 3:07e15677a75c 298 }
sakthipriya 3:07e15677a75c 299
sakthipriya 3:07e15677a75c 300 for(Iteration=0;Iteration<12;Iteration++){
sakthipriya 3:07e15677a75c 301 if(Iteration<8)
sakthipriya 3:07e15677a75c 302 actual_data.current_actual[Iteration]= actual_data.current_actual[Iteration]*3.3/(50*rsens);
sakthipriya 3:07e15677a75c 303 else
sakthipriya 3:07e15677a75c 304 actual_data.current_actual[Iteration]=actual_data.current_actual[Iteration]*3.3;
sakthipriya 3:07e15677a75c 305 int resistance;
sakthipriya 3:07e15677a75c 306
sakthipriya 3:07e15677a75c 307 resistance=24000*actual_data.current_actual[Iteration]/(3.3-actual_data.current_actual[Iteration]);
sakthipriya 3:07e15677a75c 308 if(actual_data.current_actual[Iteration]>1.47)
sakthipriya 3:07e15677a75c 309 {
sakthipriya 3:07e15677a75c 310 actual_data.current_actual[Iteration]=3694/log(24.032242*resistance);
sakthipriya 3:07e15677a75c 311 }
sakthipriya 3:07e15677a75c 312 else{
sakthipriya 3:07e15677a75c 313
sakthipriya 3:07e15677a75c 314 actual_data.current_actual[Iteration]=3365.4/log(7.60573*resistance);
sakthipriya 3:07e15677a75c 315 }
sakthipriya 3:07e15677a75c 316 }
sakthipriya 3:07e15677a75c 317 actual_data.BAE_temp_actual=(-90.7*3.3*actual_data.BAE_temp_actual)+190.1543;
sakthipriya 3:07e15677a75c 318
sakthipriya 3:07e15677a75c 319 actual_data.Batt_voltage_actual=Batt_voltage.read()*3.3*5.63;
sakthipriya 3:07e15677a75c 320
sakthipriya 3:07e15677a75c 321 //quantizing data
sakthipriya 3:07e15677a75c 322 for(Iteration=0; Iteration<16; Iteration++){
sakthipriya 3:07e15677a75c 323
sakthipriya 3:07e15677a75c 324 if(Iteration==14)
sakthipriya 3:07e15677a75c 325 quant_data.voltage_quant[Iteration]=quantiz(tstart,tstep,actual_data.voltage_actual[Iteration]);
sakthipriya 3:07e15677a75c 326 else
sakthipriya 3:07e15677a75c 327 quant_data.voltage_quant[Iteration]=quantiz(vstart,vstep,actual_data.voltage_actual[Iteration]);
sakthipriya 3:07e15677a75c 328
sakthipriya 3:07e15677a75c 329 }
sakthipriya 3:07e15677a75c 330 for(Iteration=0;Iteration<12;Iteration++){
sakthipriya 3:07e15677a75c 331 if(Iteration<8)
sakthipriya 3:07e15677a75c 332 quant_data.current_quant[Iteration]=quantiz(cstart,cstep,actual_data.current_actual[Iteration]);
sakthipriya 3:07e15677a75c 333 else
sakthipriya 3:07e15677a75c 334 quant_data.current_quant[Iteration]=quantiz(tstart_thermistor,tstep_thermistor,actual_data.current_actual[Iteration]);
sakthipriya 3:07e15677a75c 335 }
sakthipriya 3:07e15677a75c 336 for(Iteration=0;Iteration<2;Iteration++){
sakthipriya 3:07e15677a75c 337
sakthipriya 3:07e15677a75c 338 quant_data.Batt_temp_quant[Iteration]=quantiz(tstart,tstep,actual_data.Batt_temp_actual[Iteration]);
sakthipriya 3:07e15677a75c 339 }
sakthipriya 3:07e15677a75c 340
sakthipriya 3:07e15677a75c 341 quant_data.Batt_gauge_quant[0]=quantiz(vcell_start,vcell_step,actual_data.Batt_gauge_actual[0]);
sakthipriya 3:07e15677a75c 342 quant_data.Batt_gauge_quant[1]=quantiz(soc_start,soc_step,actual_data.Batt_gauge_actual[1]);
sakthipriya 3:07e15677a75c 343 quant_data.Batt_gauge_quant[2]=quantiz(crate_start,crate_step,actual_data.Batt_gauge_actual[2]);
sakthipriya 3:07e15677a75c 344 quant_data.Batt_gauge_alerts=actual_data.Batt_gauge_actual[3];
sakthipriya 3:07e15677a75c 345
sakthipriya 3:07e15677a75c 346 quant_data.BAE_temp_quant=quantiz(tstart,tstep,actual_data.BAE_temp_actual);
sakthipriya 3:07e15677a75c 347
sakthipriya 3:07e15677a75c 348 for(Iteration=0;Iteration<3;Iteration++){
sakthipriya 5:bb592f3185cc 349 quant_data.AngularSpeed_quant[Iteration]=actual_data.AngularSpeed_actual[Iteration];
sakthipriya 6:036d08b62785 350 printf("\n\r w value %f",quant_data.AngularSpeed_quant[Iteration]);
sakthipriya 3:07e15677a75c 351 }
sakthipriya 3:07e15677a75c 352
sakthipriya 3:07e15677a75c 353 for(Iteration=0;Iteration<3;Iteration++){
sakthipriya 3:07e15677a75c 354 quant_data.Bvalue_quant[Iteration]=actual_data.Bvalue_actual[Iteration];
sakthipriya 6:036d08b62785 355 printf("\n\r b value %f",quant_data.Bvalue_quant[Iteration]);
sakthipriya 3:07e15677a75c 356 }
sakthipriya 3:07e15677a75c 357
sakthipriya 3:07e15677a75c 358 quant_data.Batt_voltage_quant=quantiz(vstart,vstep,actual_data.Batt_voltage_actual);
sakthipriya 3:07e15677a75c 359
sakthipriya 3:07e15677a75c 360
sakthipriya 3:07e15677a75c 361 arch_data.Batt_1_temp=quant_data.Batt_temp_quant[0];
sakthipriya 3:07e15677a75c 362 arch_data.Batt_2_temp=quant_data.Batt_temp_quant[1];
sakthipriya 3:07e15677a75c 363 arch_data.EPS_PCB_temp=quant_data.voltage_quant[14];
sakthipriya 3:07e15677a75c 364 arch_data.Batt_SOC=quant_data.Batt_gauge_quant[1];
sakthipriya 3:07e15677a75c 365 arch_data.power_mode=actual_data.power_mode;
sakthipriya 5:bb592f3185cc 366 arch_data.faultPoll_status=actual_data.faultPoll_status;
sakthipriya 5:bb592f3185cc 367 arch_data.faultIr_status=actual_data.faultIr_status;
sakthipriya 3:07e15677a75c 368 arch_data.Batt_voltage=quant_data.Batt_voltage_quant;
sakthipriya 6:036d08b62785 369 printf("\n\r in hk");
sakthipriya 3:07e15677a75c 370
sakthipriya 3:07e15677a75c 371 }
sakthipriya 3:07e15677a75c 372
sakthipriya 5:bb592f3185cc 373 void FCTN_APPEND_HKDATA()
sakthipriya 5:bb592f3185cc 374 {
sakthipriya 5:bb592f3185cc 375 // quantized data
sakthipriya 5:bb592f3185cc 376 for (int i=0;i<16;i++)
sakthipriya 5:bb592f3185cc 377 BAE_data[i] = quant_data.voltage_quant[i];
sakthipriya 5:bb592f3185cc 378 for (int i=16;i<28;i++)
sakthipriya 5:bb592f3185cc 379 BAE_data[i] = quant_data.current_quant[i-16];
sakthipriya 5:bb592f3185cc 380 BAE_data[28] = quant_data.Batt_temp_quant[0];
sakthipriya 5:bb592f3185cc 381 BAE_data[29] = quant_data.Batt_temp_quant[1];
sakthipriya 5:bb592f3185cc 382 BAE_data[30] = quant_data.Batt_gauge_quant[1];
sakthipriya 5:bb592f3185cc 383 BAE_data[31] = quant_data.Batt_gauge_quant[1];
sakthipriya 5:bb592f3185cc 384 BAE_data[32] = quant_data.Batt_gauge_quant[1];
sakthipriya 5:bb592f3185cc 385 FCTN_CONVERT_FLOAT(quant_data.Batt_gauge_alerts,&BAE_data[33]);
sakthipriya 5:bb592f3185cc 386 BAE_data[37] = quant_data.BAE_temp_quant;
sakthipriya 5:bb592f3185cc 387 FCTN_CONVERT_FLOAT(quant_data.AngularSpeed_quant[0],&BAE_data[38]);
sakthipriya 6:036d08b62785 388 //printf("\n\r outside %d %d %d %d", BAE_data[38],BAE_data[39],BAE_data[40],BAE_data[41]);
sakthipriya 6:036d08b62785 389 //std:: cout << "\n\r uint8 outside " << BAE_data[38] << '\t' << BAE_data[39] << '\t' << BAE_data[40] << '\t' << BAE_data[41] <<std::endl;
sakthipriya 5:bb592f3185cc 390 FCTN_CONVERT_FLOAT(quant_data.AngularSpeed_quant[1],&BAE_data[42]);
sakthipriya 6:036d08b62785 391 //std:: cout << "\n\r uint8 outside " << BAE_data[42] << '\t' << BAE_data[43] << '\t' << BAE_data[44] << '\t' << BAE_data[45] <<std::endl;
sakthipriya 6:036d08b62785 392 // printf("\n\r outside %d %d %d %d", BAE_data[42],BAE_data[43],BAE_data[44],BAE_data[45]);
sakthipriya 5:bb592f3185cc 393 FCTN_CONVERT_FLOAT(quant_data.AngularSpeed_quant[2],&BAE_data[46]);
sakthipriya 6:036d08b62785 394 //printf("\n\r outside %d %d %d %d", BAE_data[46],BAE_data[47],BAE_data[48],BAE_data[49]);
sakthipriya 6:036d08b62785 395 //std:: cout << "\n\r uint8 outside " << BAE_data[46] << '\t' << BAE_data[47] << '\t' << BAE_data[48] << '\t' << BAE_data[49] <<std::endl;
sakthipriya 5:bb592f3185cc 396 FCTN_CONVERT_FLOAT(quant_data.Bvalue_quant[0],&BAE_data[50]);
sakthipriya 5:bb592f3185cc 397 FCTN_CONVERT_FLOAT(quant_data.Bvalue_quant[1],&BAE_data[54]);
sakthipriya 5:bb592f3185cc 398 FCTN_CONVERT_FLOAT(quant_data.Bvalue_quant[2],&BAE_data[58]);
sakthipriya 5:bb592f3185cc 399 BAE_data[62] = quant_data.Batt_voltage_quant;
sakthipriya 5:bb592f3185cc 400 BAE_data[63] = (uint8_t)actual_data.power_mode;
sakthipriya 5:bb592f3185cc 401 BAE_data[64] = actual_data.faultPoll_status;
sakthipriya 5:bb592f3185cc 402 BAE_data[65] = actual_data.faultIr_status;
sakthipriya 5:bb592f3185cc 403 // archived data
sakthipriya 5:bb592f3185cc 404 BAE_data[66] = arch_data.Batt_1_temp; //verify if uint8_t is right
sakthipriya 5:bb592f3185cc 405 BAE_data[67] = arch_data.Batt_2_temp;
sakthipriya 5:bb592f3185cc 406 BAE_data[68] = arch_data.EPS_PCB_temp;
sakthipriya 5:bb592f3185cc 407 BAE_data[69] = arch_data.Batt_SOC;
sakthipriya 5:bb592f3185cc 408 BAE_data[70] = (uint8_t)arch_data.power_mode;
sakthipriya 5:bb592f3185cc 409 BAE_data[71] = arch_data.faultPoll_status;
sakthipriya 5:bb592f3185cc 410 BAE_data[72] = arch_data.faultIr_status;
sakthipriya 5:bb592f3185cc 411 BAE_data[73] = arch_data.Batt_voltage;
sakthipriya 6:036d08b62785 412 for(int i=0; i<73;i++)
sakthipriya 6:036d08b62785 413 BAE_chardata[i] = (char)BAE_data[i];
sakthipriya 6:036d08b62785 414 BAE_chardata[73] = '\0';
sakthipriya 7:a46a1dee4497 415 printf("\n\r bae ats data %c %c %c", BAE_chardata[38],BAE_chardata[39],BAE_chardata[40]);
sakthipriya 6:036d08b62785 416 printf("\n\r BAE data is %s", BAE_chardata);
sakthipriya 5:bb592f3185cc 417
sakthipriya 5:bb592f3185cc 418 }
sakthipriya 5:bb592f3185cc 419
sakthipriya 5:bb592f3185cc 420 uint8_t quantiz(float start,float step,float x)
sakthipriya 0:7b4c00e3912f 421 {
sakthipriya 0:7b4c00e3912f 422 int y=(x-start)/step;
sakthipriya 0:7b4c00e3912f 423 if(y<=0)y=0;
sakthipriya 0:7b4c00e3912f 424 if(y>=255)y=255;
sakthipriya 0:7b4c00e3912f 425 return y;
sakthipriya 0:7b4c00e3912f 426 }
sakthipriya 0:7b4c00e3912f 427
sakthipriya 3:07e15677a75c 428 bool firstCount=true; // goes to EPS init
sakthipriya 3:07e15677a75c 429
sakthipriya 3:07e15677a75c 430
sakthipriya 3:07e15677a75c 431 void saveMin(char x,char y){
sakthipriya 3:07e15677a75c 432 if(y<x){
sakthipriya 3:07e15677a75c 433 x=y;
sakthipriya 3:07e15677a75c 434 }
sakthipriya 3:07e15677a75c 435
sakthipriya 3:07e15677a75c 436 }
sakthipriya 3:07e15677a75c 437 void saveMax(char x,char y){
sakthipriya 3:07e15677a75c 438 if (y>x)
sakthipriya 3:07e15677a75c 439 {
sakthipriya 3:07e15677a75c 440 x=y;
sakthipriya 3:07e15677a75c 441 }
sakthipriya 0:7b4c00e3912f 442 }
sakthipriya 0:7b4c00e3912f 443
sakthipriya 3:07e15677a75c 444
sakthipriya 3:07e15677a75c 445 void minMaxHkData(){
sakthipriya 3:07e15677a75c 446 if(firstCount==true){
sakthipriya 3:07e15677a75c 447 for (int i = 0; i < 16; ++i){
sakthipriya 3:07e15677a75c 448 bae_HK_minmax.voltage_min[i] = quant_data.voltage_quant[i];
sakthipriya 3:07e15677a75c 449 bae_HK_minmax.voltage_max[i] = quant_data.voltage_quant[i];
sakthipriya 3:07e15677a75c 450 }
sakthipriya 3:07e15677a75c 451 for (int i = 0; i < 12; ++i){
sakthipriya 3:07e15677a75c 452 bae_HK_minmax.current_min[i] = quant_data.current_quant[i];
sakthipriya 3:07e15677a75c 453 bae_HK_minmax.current_max[i] = quant_data.current_quant[i];
sakthipriya 3:07e15677a75c 454 }
sakthipriya 3:07e15677a75c 455
sakthipriya 3:07e15677a75c 456 for (int i = 0; i < 2; ++i){
sakthipriya 3:07e15677a75c 457 bae_HK_minmax.Batt_temp_min[i] = quant_data.Batt_temp_quant[i];
sakthipriya 3:07e15677a75c 458 bae_HK_minmax.Batt_temp_max[i] = quant_data.Batt_temp_quant[i];
sakthipriya 3:07e15677a75c 459 }
sakthipriya 3:07e15677a75c 460 for (int i = 0; i < 3; ++i){
sakthipriya 3:07e15677a75c 461 bae_HK_minmax.Batt_gauge_min[i] = quant_data.Batt_gauge_quant[i];
sakthipriya 3:07e15677a75c 462 bae_HK_minmax.Batt_gauge_max[i] = quant_data.Batt_gauge_quant[i];
sakthipriya 3:07e15677a75c 463 }
sakthipriya 3:07e15677a75c 464 for (int i = 0; i < 3; ++i){
sakthipriya 3:07e15677a75c 465 bae_HK_minmax.AngularSpeed_min[i] = quant_data.AngularSpeed_quant[i];
sakthipriya 3:07e15677a75c 466 bae_HK_minmax.AngularSpeed_max[i] = quant_data.AngularSpeed_quant[i];
sakthipriya 3:07e15677a75c 467 }
sakthipriya 3:07e15677a75c 468 for (int i = 0; i < 3; ++i){
sakthipriya 3:07e15677a75c 469 bae_HK_minmax.Bvalue_min[i] = quant_data.Bvalue_quant[i];
sakthipriya 3:07e15677a75c 470 bae_HK_minmax.Bvalue_max[i] = quant_data.Bvalue_quant[i];
sakthipriya 3:07e15677a75c 471 }
sakthipriya 3:07e15677a75c 472 bae_HK_minmax.BAE_temp_min=quant_data.BAE_temp_quant;
sakthipriya 3:07e15677a75c 473 bae_HK_minmax.BAE_temp_max=quant_data.BAE_temp_quant;
sakthipriya 3:07e15677a75c 474 bae_HK_minmax.Batt_voltage_min=quant_data.Batt_voltage_quant;
sakthipriya 3:07e15677a75c 475 bae_HK_minmax.Batt_voltage_max=quant_data.Batt_voltage_quant;
sakthipriya 3:07e15677a75c 476
sakthipriya 3:07e15677a75c 477 }
sakthipriya 3:07e15677a75c 478 else {
sakthipriya 3:07e15677a75c 479 for (int i = 0; i < 16; ++i)
sakthipriya 3:07e15677a75c 480 {
sakthipriya 3:07e15677a75c 481 saveMin(bae_HK_minmax.voltage_min[i],quant_data.voltage_quant[i]);
sakthipriya 3:07e15677a75c 482 saveMax(bae_HK_minmax.voltage_max[i],quant_data.voltage_quant[i]);
sakthipriya 3:07e15677a75c 483 }
sakthipriya 3:07e15677a75c 484 for (int i = 0; i < 12; ++i)
sakthipriya 3:07e15677a75c 485 {
sakthipriya 3:07e15677a75c 486 saveMin(bae_HK_minmax.current_min[i],quant_data.current_quant[i]);
sakthipriya 3:07e15677a75c 487 saveMax(bae_HK_minmax.current_max[i],quant_data.current_quant[i]);
sakthipriya 3:07e15677a75c 488 }
sakthipriya 3:07e15677a75c 489
sakthipriya 3:07e15677a75c 490 for (int i = 0; i < 2; ++i)
sakthipriya 3:07e15677a75c 491 {
sakthipriya 3:07e15677a75c 492 saveMin(bae_HK_minmax.Batt_temp_min[i],quant_data.Batt_temp_quant[i]);
sakthipriya 3:07e15677a75c 493 saveMax(bae_HK_minmax.Batt_temp_max[i],quant_data.Batt_temp_quant[i]);
sakthipriya 3:07e15677a75c 494 }
sakthipriya 3:07e15677a75c 495 for (int i = 0; i < 3; ++i)
sakthipriya 3:07e15677a75c 496 {
sakthipriya 3:07e15677a75c 497 saveMin(bae_HK_minmax.Batt_gauge_min[i], quant_data.Batt_gauge_quant[i]);
sakthipriya 3:07e15677a75c 498 saveMax(bae_HK_minmax.Batt_gauge_max[i], quant_data.Batt_gauge_quant[i]);
sakthipriya 3:07e15677a75c 499 }
sakthipriya 3:07e15677a75c 500 for (int i = 0; i < 3; ++i)
sakthipriya 3:07e15677a75c 501 {
sakthipriya 3:07e15677a75c 502 saveMin(bae_HK_minmax.AngularSpeed_min[i], quant_data.AngularSpeed_quant[i]);
sakthipriya 3:07e15677a75c 503 saveMax(bae_HK_minmax.AngularSpeed_max[i], quant_data.AngularSpeed_quant[i]);
sakthipriya 3:07e15677a75c 504 }
sakthipriya 3:07e15677a75c 505 for (int i = 0; i < 3; ++i)
sakthipriya 3:07e15677a75c 506 {
sakthipriya 3:07e15677a75c 507 saveMin(bae_HK_minmax.Bvalue_min[i], quant_data.Bvalue_quant[i]);
sakthipriya 3:07e15677a75c 508 saveMax(bae_HK_minmax.Bvalue_max[i], quant_data.Bvalue_quant[i]);
sakthipriya 3:07e15677a75c 509 }
sakthipriya 3:07e15677a75c 510 saveMin(bae_HK_minmax.BAE_temp_min,quant_data.BAE_temp_quant);
sakthipriya 3:07e15677a75c 511 saveMax(bae_HK_minmax.BAE_temp_max,quant_data.BAE_temp_quant);
sakthipriya 3:07e15677a75c 512 saveMin(bae_HK_minmax.Batt_voltage_min,quant_data.Batt_voltage_quant);
sakthipriya 3:07e15677a75c 513 saveMin(bae_HK_minmax.Batt_voltage_max,quant_data.Batt_voltage_quant);
sakthipriya 3:07e15677a75c 514
sakthipriya 3:07e15677a75c 515
sakthipriya 3:07e15677a75c 516 }
sakthipriya 3:07e15677a75c 517 firstCount=false;
sakthipriya 3:07e15677a75c 518 }
sakthipriya 3:07e15677a75c 519
sakthipriya 3:07e15677a75c 520
sakthipriya 0:7b4c00e3912f 521 //............................................BATTERY GAUGE......................................//
sakthipriya 0:7b4c00e3912f 522 void FCTN_BATTERYGAUGE_INIT()
sakthipriya 0:7b4c00e3912f 523 {
sakthipriya 0:7b4c00e3912f 524 disable_sleep();
sakthipriya 0:7b4c00e3912f 525 disable_hibernate();
sakthipriya 0:7b4c00e3912f 526 socChangeAlertEnabled(true); //enabling alert on soc changing by 1%
sakthipriya 0:7b4c00e3912f 527 emptyAlertThreshold(32);//setting empty alert threshold to 32% soc
sakthipriya 0:7b4c00e3912f 528 vAlertMinMaxThreshold();//set min, max value of Valrt register
sakthipriya 0:7b4c00e3912f 529 vResetThresholdSet();//set threshold voltage for reset
sakthipriya 0:7b4c00e3912f 530 vResetAlertEnabled(true);//enable alert on reset for V < Vreset
sakthipriya 0:7b4c00e3912f 531 }
sakthipriya 0:7b4c00e3912f 532
sakthipriya 0:7b4c00e3912f 533 void FCTN_BATTERYGAUGE_MAIN(float Battery_parameters[4])
sakthipriya 0:7b4c00e3912f 534 {
sakthipriya 1:446a959e36ce 535 printf("\n\r battery gauge \n");
sakthipriya 0:7b4c00e3912f 536
sakthipriya 3:07e15677a75c 537 float temp=30; //=Battery_temp (from temp sensor on battery board) //value of battery temperature in C currently given a dummy value. Should be updated everytime.
sakthipriya 0:7b4c00e3912f 538 tempCompensation(temp);
sakthipriya 0:7b4c00e3912f 539
sakthipriya 0:7b4c00e3912f 540
sakthipriya 0:7b4c00e3912f 541 Battery_parameters[0]=vcell();
sakthipriya 0:7b4c00e3912f 542 Battery_parameters[1]=soc();
sakthipriya 0:7b4c00e3912f 543 Battery_parameters[2]=crate();
sakthipriya 0:7b4c00e3912f 544
sakthipriya 0:7b4c00e3912f 545 printf("\nVcell=%f",vcell()); //remove this for final code
sakthipriya 0:7b4c00e3912f 546 printf("\nSOC=%f",soc()); //remove this for final code
sakthipriya 0:7b4c00e3912f 547 printf("\nC_rate=%f",crate()); //remove this for final code
sakthipriya 0:7b4c00e3912f 548
sakthipriya 0:7b4c00e3912f 549
sakthipriya 0:7b4c00e3912f 550 if (alerting()== true) //alert is on
sakthipriya 0:7b4c00e3912f 551 {
sakthipriya 0:7b4c00e3912f 552 Battery_parameters[3]=alertFlags();
sakthipriya 0:7b4c00e3912f 553 clearAlert();//clear alert
sakthipriya 0:7b4c00e3912f 554 clearAlertFlags();//clear all alert flags
sakthipriya 0:7b4c00e3912f 555 }
sakthipriya 0:7b4c00e3912f 556
sakthipriya 0:7b4c00e3912f 557 }
sakthipriya 0:7b4c00e3912f 558
sakthipriya 0:7b4c00e3912f 559 unsigned short read(char reg)
sakthipriya 0:7b4c00e3912f 560 {
sakthipriya 0:7b4c00e3912f 561
sakthipriya 0:7b4c00e3912f 562 //Create a temporary buffer
sakthipriya 0:7b4c00e3912f 563 char buff[2];
sakthipriya 0:7b4c00e3912f 564
sakthipriya 0:7b4c00e3912f 565 //Select the register
sakthipriya 0:7b4c00e3912f 566 m_I2C.write(m_ADDR, &reg, 1, true);
sakthipriya 0:7b4c00e3912f 567
sakthipriya 0:7b4c00e3912f 568 //Read the 16-bit register
sakthipriya 0:7b4c00e3912f 569 m_I2C.read(m_ADDR, buff, 2);
sakthipriya 0:7b4c00e3912f 570
sakthipriya 0:7b4c00e3912f 571 //Return the combined 16-bit value
sakthipriya 0:7b4c00e3912f 572 return (buff[0] << 8) | buff[1];
sakthipriya 0:7b4c00e3912f 573 }
sakthipriya 0:7b4c00e3912f 574
sakthipriya 3:07e15677a75c 575
sakthipriya 1:446a959e36ce 576
sakthipriya 3:07e15677a75c 577
sakthipriya 0:7b4c00e3912f 578
sakthipriya 0:7b4c00e3912f 579 void write(char reg, unsigned short data)
sakthipriya 0:7b4c00e3912f 580 {
sakthipriya 0:7b4c00e3912f 581 //Create a temporary buffer
sakthipriya 0:7b4c00e3912f 582 char buff[3];
sakthipriya 0:7b4c00e3912f 583
sakthipriya 0:7b4c00e3912f 584 //Load the register address and 16-bit data
sakthipriya 0:7b4c00e3912f 585 buff[0] = reg;
sakthipriya 0:7b4c00e3912f 586 buff[1] = data >> 8;
sakthipriya 0:7b4c00e3912f 587 buff[2] = data;
sakthipriya 0:7b4c00e3912f 588
sakthipriya 0:7b4c00e3912f 589 //Write the data
sakthipriya 0:7b4c00e3912f 590 m_I2C.write(m_ADDR, buff, 3);
sakthipriya 0:7b4c00e3912f 591 }
sakthipriya 0:7b4c00e3912f 592
sakthipriya 0:7b4c00e3912f 593
sakthipriya 0:7b4c00e3912f 594
sakthipriya 0:7b4c00e3912f 595 // Command the MAX17049 to perform a power-on reset
sakthipriya 0:7b4c00e3912f 596 void reset()
sakthipriya 0:7b4c00e3912f 597 {
sakthipriya 0:7b4c00e3912f 598 //Write the POR command
sakthipriya 0:7b4c00e3912f 599 write(REG_CMD, 0x5400);
sakthipriya 0:7b4c00e3912f 600 }
sakthipriya 0:7b4c00e3912f 601
sakthipriya 0:7b4c00e3912f 602 // Command the MAX17049 to perform a QuickStart
sakthipriya 0:7b4c00e3912f 603 void quickStart()
sakthipriya 0:7b4c00e3912f 604 {
sakthipriya 0:7b4c00e3912f 605 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 606 unsigned short value = read(REG_MODE);
lakshya 15:e09aaaccf134 607
sakthipriya 0:7b4c00e3912f 608 //Set the QuickStart bit
sakthipriya 0:7b4c00e3912f 609 value |= (1 << 14);
sakthipriya 0:7b4c00e3912f 610
sakthipriya 0:7b4c00e3912f 611 //Write the value back out
sakthipriya 0:7b4c00e3912f 612 write(REG_MODE, value);
sakthipriya 0:7b4c00e3912f 613 }
sakthipriya 0:7b4c00e3912f 614
sakthipriya 0:7b4c00e3912f 615
sakthipriya 0:7b4c00e3912f 616 //disable sleep
sakthipriya 0:7b4c00e3912f 617 void disable_sleep()
sakthipriya 0:7b4c00e3912f 618 {
sakthipriya 0:7b4c00e3912f 619 unsigned short value = read(REG_MODE);
sakthipriya 0:7b4c00e3912f 620 value &= ~(1 << 13);
sakthipriya 0:7b4c00e3912f 621 write(REG_MODE, value);
sakthipriya 0:7b4c00e3912f 622 }
sakthipriya 0:7b4c00e3912f 623
sakthipriya 0:7b4c00e3912f 624 //disable the hibernate of the MAX17049
sakthipriya 0:7b4c00e3912f 625 void disable_hibernate()
sakthipriya 0:7b4c00e3912f 626 {
sakthipriya 0:7b4c00e3912f 627 write(REG_HIBRT, 0x0000);
sakthipriya 0:7b4c00e3912f 628 }
sakthipriya 0:7b4c00e3912f 629
sakthipriya 0:7b4c00e3912f 630
sakthipriya 0:7b4c00e3912f 631 // Enable or disable the SOC 1% change alert on the MAX17049
sakthipriya 0:7b4c00e3912f 632 void socChangeAlertEnabled(bool enabled)
sakthipriya 0:7b4c00e3912f 633 {
sakthipriya 0:7b4c00e3912f 634 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 635 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 636
sakthipriya 0:7b4c00e3912f 637 //Set or clear the ALSC bit
sakthipriya 0:7b4c00e3912f 638 if (enabled)
sakthipriya 0:7b4c00e3912f 639 value |= (1 << 6);
sakthipriya 0:7b4c00e3912f 640 else
sakthipriya 0:7b4c00e3912f 641 value &= ~(1 << 6);
sakthipriya 0:7b4c00e3912f 642
sakthipriya 0:7b4c00e3912f 643 //Write the value back out
sakthipriya 0:7b4c00e3912f 644 write(REG_CONFIG, value);
sakthipriya 0:7b4c00e3912f 645 }
sakthipriya 0:7b4c00e3912f 646
sakthipriya 0:7b4c00e3912f 647
sakthipriya 0:7b4c00e3912f 648 void compensation(char rcomp)
sakthipriya 0:7b4c00e3912f 649 {
sakthipriya 0:7b4c00e3912f 650 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 651 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 652
sakthipriya 0:7b4c00e3912f 653 //Update the register value
sakthipriya 0:7b4c00e3912f 654 value &= 0x00FF;
sakthipriya 0:7b4c00e3912f 655 value |= rcomp << 8;
sakthipriya 0:7b4c00e3912f 656
sakthipriya 0:7b4c00e3912f 657 //Write the value back out
sakthipriya 0:7b4c00e3912f 658 write(REG_CONFIG, value);
sakthipriya 0:7b4c00e3912f 659 }
sakthipriya 0:7b4c00e3912f 660
sakthipriya 0:7b4c00e3912f 661
sakthipriya 0:7b4c00e3912f 662 void tempCompensation(float temp)
sakthipriya 0:7b4c00e3912f 663 {
sakthipriya 0:7b4c00e3912f 664 //Calculate the new RCOMP value
sakthipriya 0:7b4c00e3912f 665 char rcomp;
sakthipriya 0:7b4c00e3912f 666 if (temp > 20.0) {
sakthipriya 0:7b4c00e3912f 667 rcomp = RCOMP0 + (temp - 20.0) * -0.5;
sakthipriya 0:7b4c00e3912f 668 } else {
sakthipriya 0:7b4c00e3912f 669 rcomp = RCOMP0 + (temp - 20.0) * -5.0;
sakthipriya 0:7b4c00e3912f 670 }
sakthipriya 0:7b4c00e3912f 671
sakthipriya 0:7b4c00e3912f 672 //Update the RCOMP value
sakthipriya 0:7b4c00e3912f 673 compensation(rcomp);
sakthipriya 0:7b4c00e3912f 674 }
sakthipriya 0:7b4c00e3912f 675
sakthipriya 0:7b4c00e3912f 676 // Command the MAX17049 to de-assert the ALRT pin
sakthipriya 0:7b4c00e3912f 677 void clearAlert()
sakthipriya 0:7b4c00e3912f 678 {
sakthipriya 0:7b4c00e3912f 679 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 680 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 681
sakthipriya 0:7b4c00e3912f 682 //Clear the ALRT bit
sakthipriya 0:7b4c00e3912f 683 value &= ~(1 << 5);
sakthipriya 0:7b4c00e3912f 684
sakthipriya 0:7b4c00e3912f 685 //Write the value back out
sakthipriya 0:7b4c00e3912f 686 write(REG_CONFIG, value);
sakthipriya 0:7b4c00e3912f 687 }
sakthipriya 0:7b4c00e3912f 688
sakthipriya 0:7b4c00e3912f 689
sakthipriya 0:7b4c00e3912f 690 //Set the SOC empty alert threshold of the MAX17049
sakthipriya 0:7b4c00e3912f 691 void emptyAlertThreshold(char threshold)
sakthipriya 0:7b4c00e3912f 692 {
sakthipriya 0:7b4c00e3912f 693 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 694 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 695
sakthipriya 0:7b4c00e3912f 696 //Update the register value
sakthipriya 0:7b4c00e3912f 697 value &= 0xFFE0;
sakthipriya 0:7b4c00e3912f 698 value |= 32 - threshold;
sakthipriya 0:7b4c00e3912f 699
sakthipriya 0:7b4c00e3912f 700 //Write the 16-bit register
sakthipriya 0:7b4c00e3912f 701 write(REG_CONFIG, value);
sakthipriya 0:7b4c00e3912f 702 }
sakthipriya 0:7b4c00e3912f 703
sakthipriya 0:7b4c00e3912f 704 // Set the low and high voltage alert threshold of the MAX17049
sakthipriya 0:7b4c00e3912f 705 void vAlertMinMaxThreshold()
sakthipriya 0:7b4c00e3912f 706 {
sakthipriya 0:7b4c00e3912f 707 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 708 unsigned short value = read(REG_VALRT);
sakthipriya 0:7b4c00e3912f 709
sakthipriya 0:7b4c00e3912f 710 //Mask off the old value
sakthipriya 0:7b4c00e3912f 711
sakthipriya 0:7b4c00e3912f 712 value = 0x96D2;
sakthipriya 0:7b4c00e3912f 713
sakthipriya 0:7b4c00e3912f 714 //Write the 16-bit register
sakthipriya 0:7b4c00e3912f 715 write(REG_VALRT, value);
sakthipriya 0:7b4c00e3912f 716 }
sakthipriya 0:7b4c00e3912f 717
sakthipriya 0:7b4c00e3912f 718
sakthipriya 0:7b4c00e3912f 719 // Set the reset voltage threshold of the MAX17049
sakthipriya 0:7b4c00e3912f 720 void vResetThresholdSet()
sakthipriya 0:7b4c00e3912f 721 {
sakthipriya 0:7b4c00e3912f 722 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 723 unsigned short value = read(REG_VRESET_ID);
sakthipriya 0:7b4c00e3912f 724
sakthipriya 0:7b4c00e3912f 725 //Mask off the old //value
sakthipriya 0:7b4c00e3912f 726 value &= 0x00FF;//Dis=0
sakthipriya 0:7b4c00e3912f 727
sakthipriya 0:7b4c00e3912f 728 value |= 0x9400;//corresponding to 2.5 V
sakthipriya 0:7b4c00e3912f 729
sakthipriya 0:7b4c00e3912f 730
sakthipriya 0:7b4c00e3912f 731 //Write the 16-bit register
sakthipriya 0:7b4c00e3912f 732 write(REG_VRESET_ID, value);
sakthipriya 0:7b4c00e3912f 733 }
sakthipriya 0:7b4c00e3912f 734
sakthipriya 0:7b4c00e3912f 735
sakthipriya 0:7b4c00e3912f 736 // Enable or disable the voltage reset alert on the MAX17049
sakthipriya 0:7b4c00e3912f 737 void vResetAlertEnabled(bool enabled)
sakthipriya 0:7b4c00e3912f 738 {
sakthipriya 0:7b4c00e3912f 739 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 740 unsigned short value = read(REG_STATUS);
sakthipriya 0:7b4c00e3912f 741
sakthipriya 0:7b4c00e3912f 742 //Set or clear the EnVR bit
sakthipriya 0:7b4c00e3912f 743 if (enabled)
sakthipriya 0:7b4c00e3912f 744 value |= (1 << 14);
sakthipriya 0:7b4c00e3912f 745 else
sakthipriya 0:7b4c00e3912f 746 value &= ~(1 << 14);
sakthipriya 0:7b4c00e3912f 747
sakthipriya 0:7b4c00e3912f 748 //Write the value back out
sakthipriya 0:7b4c00e3912f 749 write(REG_STATUS, value);
sakthipriya 0:7b4c00e3912f 750 }
sakthipriya 0:7b4c00e3912f 751
sakthipriya 0:7b4c00e3912f 752 //Get the current alert flags on the MAX17049
sakthipriya 0:7b4c00e3912f 753 //refer datasheet-status registers section to decode it.
sakthipriya 0:7b4c00e3912f 754 char alertFlags()
sakthipriya 0:7b4c00e3912f 755 {
sakthipriya 0:7b4c00e3912f 756 //Read the 16-bit register value
sakthipriya 0:7b4c00e3912f 757 unsigned short value = read(REG_STATUS);
sakthipriya 0:7b4c00e3912f 758
sakthipriya 0:7b4c00e3912f 759 //Return only the flag bits
sakthipriya 0:7b4c00e3912f 760 return (value >> 8) & 0x3F;
sakthipriya 0:7b4c00e3912f 761 }
sakthipriya 0:7b4c00e3912f 762
sakthipriya 0:7b4c00e3912f 763 // Clear all the alert flags on the MAX17049
sakthipriya 0:7b4c00e3912f 764 void clearAlertFlags()
sakthipriya 0:7b4c00e3912f 765 {
sakthipriya 0:7b4c00e3912f 766 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 767 unsigned short value = read(REG_STATUS);
sakthipriya 0:7b4c00e3912f 768
sakthipriya 0:7b4c00e3912f 769 //Clear the specified flag bits
sakthipriya 0:7b4c00e3912f 770 value &= ~( 0x3F<< 8);
sakthipriya 0:7b4c00e3912f 771
sakthipriya 0:7b4c00e3912f 772 //Write the value back out
sakthipriya 0:7b4c00e3912f 773 write(REG_STATUS, value);
sakthipriya 0:7b4c00e3912f 774 }
sakthipriya 0:7b4c00e3912f 775
sakthipriya 0:7b4c00e3912f 776 // Get the current cell voltage measurement of the MAX17049
sakthipriya 0:7b4c00e3912f 777 float vcell()
sakthipriya 0:7b4c00e3912f 778 {
sakthipriya 1:446a959e36ce 779
sakthipriya 0:7b4c00e3912f 780 //Read the 16-bit raw Vcell value
sakthipriya 0:7b4c00e3912f 781 unsigned short value = read(REG_VCELL);
sakthipriya 0:7b4c00e3912f 782
sakthipriya 0:7b4c00e3912f 783 //Return Vcell in volts
sakthipriya 0:7b4c00e3912f 784 return value * 0.000078125*2;
sakthipriya 0:7b4c00e3912f 785 }
sakthipriya 0:7b4c00e3912f 786
sakthipriya 0:7b4c00e3912f 787 // Get the current state of charge measurement of the MAX17049 as a float
sakthipriya 0:7b4c00e3912f 788 float soc()
sakthipriya 0:7b4c00e3912f 789 {
sakthipriya 3:07e15677a75c 790
sakthipriya 3:07e15677a75c 791 //Create a temporary buffer
sakthipriya 0:7b4c00e3912f 792 char buff[2];
sakthipriya 3:07e15677a75c 793 int ack = 1;
sakthipriya 3:07e15677a75c 794 //Select the register
sakthipriya 3:07e15677a75c 795 char reg = REG_SOC; // cannot pass the hash defined values directly
sakthipriya 3:07e15677a75c 796 m_I2C.write(m_ADDR, &reg, 1, true);
sakthipriya 3:07e15677a75c 797
sakthipriya 3:07e15677a75c 798
sakthipriya 3:07e15677a75c 799 //Read the 16-bit register
sakthipriya 3:07e15677a75c 800
sakthipriya 3:07e15677a75c 801 ack = m_I2C.read(m_ADDR, buff, 2);
sakthipriya 3:07e15677a75c 802
sakthipriya 3:07e15677a75c 803 printf("\n\r acknow %d", ack);
sakthipriya 0:7b4c00e3912f 804
sakthipriya 0:7b4c00e3912f 805 //Return SOC in percent
sakthipriya 2:c823d84b4cb0 806 if(ack == 0)
sakthipriya 3:07e15677a75c 807 return ((buff[0] << 8) | buff[1]) * 0.00390625;
sakthipriya 2:c823d84b4cb0 808 else
sakthipriya 2:c823d84b4cb0 809 return 200;
sakthipriya 0:7b4c00e3912f 810 }
sakthipriya 0:7b4c00e3912f 811
sakthipriya 0:7b4c00e3912f 812
sakthipriya 0:7b4c00e3912f 813
sakthipriya 0:7b4c00e3912f 814 // Get the current C rate measurement of the MAX17049
sakthipriya 0:7b4c00e3912f 815 float crate()
sakthipriya 0:7b4c00e3912f 816 {
sakthipriya 0:7b4c00e3912f 817 //Read the 16-bit raw C/Rate value
sakthipriya 0:7b4c00e3912f 818 short value = read(REG_CRATE);
sakthipriya 0:7b4c00e3912f 819
sakthipriya 0:7b4c00e3912f 820 //Return C/Rate in %/hr
sakthipriya 0:7b4c00e3912f 821 return value * 0.208;
sakthipriya 0:7b4c00e3912f 822 }
sakthipriya 0:7b4c00e3912f 823
sakthipriya 0:7b4c00e3912f 824 // Determine whether or not the MAX17049 is asserting the ALRT pin
sakthipriya 0:7b4c00e3912f 825 bool alerting()
sakthipriya 0:7b4c00e3912f 826 {
sakthipriya 0:7b4c00e3912f 827 //Read the 16-bit register value
sakthipriya 0:7b4c00e3912f 828 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 829
sakthipriya 0:7b4c00e3912f 830 //Return the status of the ALRT bit
sakthipriya 0:7b4c00e3912f 831 if (value & (1 << 5))
sakthipriya 0:7b4c00e3912f 832 return true;
sakthipriya 0:7b4c00e3912f 833 else
sakthipriya 0:7b4c00e3912f 834 return false;
sakthipriya 2:c823d84b4cb0 835 }
sakthipriya 2:c823d84b4cb0 836
sakthipriya 2:c823d84b4cb0 837 //.............................Battery board Temp sensor........................//
sakthipriya 2:c823d84b4cb0 838 void FCTN_BATTTEMP_INIT()
sakthipriya 2:c823d84b4cb0 839 {
sakthipriya 2:c823d84b4cb0 840 ssn1=1;ssn2=1;
sakthipriya 2:c823d84b4cb0 841 //PS=0;
sakthipriya 2:c823d84b4cb0 842 //HS=0;
sakthipriya 2:c823d84b4cb0 843 spi_bt.format(8,3);
sakthipriya 2:c823d84b4cb0 844 spi_bt.frequency(1000000);
azaddevarm 16:5f0f2a3f3e8d 845 EPS_BATTERY_TEMP_STATUS = 1;
sakthipriya 2:c823d84b4cb0 846 }
sakthipriya 2:c823d84b4cb0 847
sakthipriya 2:c823d84b4cb0 848 void FCTN_BATT_TEMP_SENSOR_MAIN(float temp[2])
sakthipriya 2:c823d84b4cb0 849 {
sakthipriya 2:c823d84b4cb0 850 uint8_t MSB, LSB;
sakthipriya 2:c823d84b4cb0 851 int16_t bit_data;
sakthipriya 2:c823d84b4cb0 852 float sensitivity=0.0078125; //1 LSB = sensitivity degree celcius
sakthipriya 2:c823d84b4cb0 853 wait_ms(320);
sakthipriya 2:c823d84b4cb0 854 ssn1=0;
sakthipriya 2:c823d84b4cb0 855
sakthipriya 2:c823d84b4cb0 856 spi_bt.write(0x80);//Reading digital data from Sensor 1
sakthipriya 2:c823d84b4cb0 857 LSB = spi_bt.write(0x00);//LSB first
sakthipriya 2:c823d84b4cb0 858 wait_ms(0);
sakthipriya 2:c823d84b4cb0 859 MSB = spi_bt.write(0x00);
sakthipriya 2:c823d84b4cb0 860 wait_ms(10);
sakthipriya 2:c823d84b4cb0 861 pc_eps.printf("%d %d\n",MSB,LSB);
sakthipriya 2:c823d84b4cb0 862 bit_data= ((uint16_t)MSB<<8)|LSB;
sakthipriya 2:c823d84b4cb0 863 wait_ms(10);
sakthipriya 2:c823d84b4cb0 864 temp[0]=(float)bit_data*sensitivity;//Converting into decimal value
sakthipriya 2:c823d84b4cb0 865 ssn1=1;
sakthipriya 2:c823d84b4cb0 866 wait_ms(10);
sakthipriya 2:c823d84b4cb0 867 ssn2=0;//Reading data from sensor 2
sakthipriya 2:c823d84b4cb0 868 spi_bt.write(0x80);
sakthipriya 2:c823d84b4cb0 869 LSB = spi_bt.write(0x00);
sakthipriya 2:c823d84b4cb0 870 wait_ms(10);
sakthipriya 2:c823d84b4cb0 871 MSB = spi_bt.write(0x00);
sakthipriya 2:c823d84b4cb0 872 wait_ms(10);
sakthipriya 2:c823d84b4cb0 873 bit_data= ((int16_t)MSB<<8)|LSB;
sakthipriya 2:c823d84b4cb0 874 wait_ms(10);
sakthipriya 2:c823d84b4cb0 875 temp[1]=(float)bit_data*sensitivity;
sakthipriya 2:c823d84b4cb0 876 ssn2=1;
sakthipriya 2:c823d84b4cb0 877
sakthipriya 2:c823d84b4cb0 878 }