Team Fox / Mbed 2 deprecated TFR_BAE_vr1_1_Debug153

To be debugged

Dependencies:   FreescaleIAP mbed-rtos mbed

Fork of TFR_BAE_vr1_1_Debug153 by Bragadeesh S

EPS.cpp@2:c823d84b4cb0, 2015-12-25 (annotated)

Committer:
sakthipriya
Date:
Fri Dec 25 15:25:44 2015 +0000
Revision:
2:c823d84b4cb0
Parent:
1:446a959e36ce
Child:
3:07e15677a75c
bg working

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 0:7b4c00e3912f 3 /***********************************************global variable declaration***************************************************************/
sakthipriya 0:7b4c00e3912f 4 extern uint32_t BAE_STATUS;
sakthipriya 0:7b4c00e3912f 5 extern uint32_t BAE_ENABLE;
sakthipriya 0:7b4c00e3912f 6
sakthipriya 0:7b4c00e3912f 7
sakthipriya 0:7b4c00e3912f 8 //m_I2C.frequency(10000)
sakthipriya 0:7b4c00e3912f 9 const char RCOMP0= 0x97;
sakthipriya 0:7b4c00e3912f 10 BAE_HK_actual actual_data;
sakthipriya 0:7b4c00e3912f 11 BAE_HK_quant quant_data;
sakthipriya 0:7b4c00e3912f 12 BAE_HK_min_max bae_HK_minmax;
sakthipriya 0:7b4c00e3912f 13 BAE_HK_arch arch_data;
sakthipriya 0:7b4c00e3912f 14
sakthipriya 0:7b4c00e3912f 15 //......................................Peripheral declarations.........................................................//
sakthipriya 0:7b4c00e3912f 16 Serial pc_eps(USBTX,USBRX);
sakthipriya 0:7b4c00e3912f 17 I2C m_I2C(PIN85,PIN84);
sakthipriya 0:7b4c00e3912f 18 DigitalOut TRXY(TRXY_DR_EN); //active high
sakthipriya 0:7b4c00e3912f 19 DigitalOut TRZ(TRZ_DR_EN); //active high
sakthipriya 0:7b4c00e3912f 20 DigitalOut EN3V3A(ENBL3V3A);
sakthipriya 0:7b4c00e3912f 21 DigitalOut EN_BTRY_HT(BATT_HEAT);
sakthipriya 0:7b4c00e3912f 22 //DigitalIn BTRY_HT_OUTPUT(BATT_HEAT_OUTPUT);
sakthipriya 0:7b4c00e3912f 23 AnalogIn Vbatt_ang(VBATT);
sakthipriya 2:c823d84b4cb0 24 SPI spi_bt(PIN99,PIN100,PIN98); //MOSI,MISO,SLK
sakthipriya 2:c823d84b4cb0 25 DigitalOut ssn1(PIN19); //Slave select1
sakthipriya 2:c823d84b4cb0 26 DigitalOut ssn2(PIN21);//Slave select2
sakthipriya 2:c823d84b4cb0 27 //DigitalOut PS(PTB0);
sakthipriya 2:c823d84b4cb0 28 //DigitalOut HS(PTB1);
sakthipriya 2:c823d84b4cb0 29
sakthipriya 0:7b4c00e3912f 30
sakthipriya 0:7b4c00e3912f 31 //*********************************************************flags********************************************************//
sakthipriya 0:7b4c00e3912f 32 extern char EPS_INIT_STATUS ;
sakthipriya 0:7b4c00e3912f 33 extern char EPS_BATTERY_GAUGE_STATUS ;
sakthipriya 0:7b4c00e3912f 34 extern char EPS_MAIN_STATUS;
sakthipriya 0:7b4c00e3912f 35 extern char EPS_BATTERY_TEMP_STATUS ;
sakthipriya 0:7b4c00e3912f 36 extern char EPS_STATUS ;
sakthipriya 0:7b4c00e3912f 37
sakthipriya 0:7b4c00e3912f 38 extern char EPS_BATTERY_HEAT_ENABLE ;
sakthipriya 0:7b4c00e3912f 39
sakthipriya 0:7b4c00e3912f 40 //........................................... FUCTIONS.................................................//
sakthipriya 0:7b4c00e3912f 41
sakthipriya 0:7b4c00e3912f 42 void FCTN_EPS_INIT()
sakthipriya 0:7b4c00e3912f 43 {
sakthipriya 0:7b4c00e3912f 44 printf("\n\r eps init \n");
sakthipriya 0:7b4c00e3912f 45 EPS_INIT_STATUS = 's' ; //set EPS_INIT_STATUS flag
sakthipriya 0:7b4c00e3912f 46 // FLAG();
sakthipriya 0:7b4c00e3912f 47 FCTN_BATTERYGAUGE_INIT();
sakthipriya 2:c823d84b4cb0 48 //FCTN_BATTTEMP_INIT();
sakthipriya 0:7b4c00e3912f 49 EN3V3A = 1; //enable dc dc converter A
sakthipriya 0:7b4c00e3912f 50 char value=alertFlags();
sakthipriya 0:7b4c00e3912f 51 unsigned short value_u= (short int )value;
sakthipriya 0:7b4c00e3912f 52 value_u &=0x0001;
sakthipriya 0:7b4c00e3912f 53 if(value_u ==0x0001) // battery gauge not initialised
sakthipriya 0:7b4c00e3912f 54 {
sakthipriya 0:7b4c00e3912f 55 actual_data.power_mode = 1;
sakthipriya 0:7b4c00e3912f 56 EPS_BATTERY_GAUGE_STATUS = 'c'; //clear EPS_BATTERY_GAUGE_STATUS
sakthipriya 0:7b4c00e3912f 57 }
sakthipriya 0:7b4c00e3912f 58 else
sakthipriya 0:7b4c00e3912f 59 {
sakthipriya 0:7b4c00e3912f 60 actual_data.Batt_gauge_actual[1] = soc();
sakthipriya 0:7b4c00e3912f 61 actual_data.Batt_voltage_actual = Vbatt_ang.read()*3.3;
sakthipriya 0:7b4c00e3912f 62 FCTN_EPS_POWERMODE(actual_data.Batt_gauge_actual[1]);
sakthipriya 0:7b4c00e3912f 63 EPS_BATTERY_GAUGE_STATUS = 's'; //set EPS_BATTERY_GAUGE_STATUS
sakthipriya 0:7b4c00e3912f 64 }
sakthipriya 0:7b4c00e3912f 65
sakthipriya 0:7b4c00e3912f 66 EPS_INIT_STATUS = 'c' ; //clear EPS_INIT_STATUS flag
sakthipriya 0:7b4c00e3912f 67
sakthipriya 0:7b4c00e3912f 68 }
sakthipriya 0:7b4c00e3912f 69
sakthipriya 0:7b4c00e3912f 70 //----------------------------------------------------Power algo code--------------------------------------------------------------------//
sakthipriya 0:7b4c00e3912f 71 void FCTN_EPS_POWERMODE(float soc) //dummy algo
sakthipriya 0:7b4c00e3912f 72 {
sakthipriya 0:7b4c00e3912f 73 if(soc >= 80)
sakthipriya 0:7b4c00e3912f 74 actual_data.power_mode = 4;
sakthipriya 0:7b4c00e3912f 75 else if(soc >= 70 & soc < 80)
sakthipriya 0:7b4c00e3912f 76 actual_data.power_mode = 3;
sakthipriya 0:7b4c00e3912f 77 else if(soc >= 60 & soc < 70)
sakthipriya 0:7b4c00e3912f 78 actual_data.power_mode = 2;
sakthipriya 0:7b4c00e3912f 79 else if(soc < 60)
sakthipriya 0:7b4c00e3912f 80 actual_data.power_mode = 1;
sakthipriya 0:7b4c00e3912f 81 }
sakthipriya 0:7b4c00e3912f 82
sakthipriya 0:7b4c00e3912f 83 //...................................................HK...........................................//
sakthipriya 0:7b4c00e3912f 84
sakthipriya 0:7b4c00e3912f 85 int quantiz(float start,float step,float x)
sakthipriya 0:7b4c00e3912f 86 {
sakthipriya 0:7b4c00e3912f 87 int y=(x-start)/step;
sakthipriya 0:7b4c00e3912f 88 if(y<=0)y=0;
sakthipriya 0:7b4c00e3912f 89 if(y>=255)y=255;
sakthipriya 0:7b4c00e3912f 90 return y;
sakthipriya 0:7b4c00e3912f 91 }
sakthipriya 0:7b4c00e3912f 92
sakthipriya 0:7b4c00e3912f 93 void HK_main()
sakthipriya 0:7b4c00e3912f 94 {
sakthipriya 0:7b4c00e3912f 95
sakthipriya 2:c823d84b4cb0 96
sakthipriya 0:7b4c00e3912f 97 }
sakthipriya 0:7b4c00e3912f 98
sakthipriya 0:7b4c00e3912f 99 //............................................BATTERY GAUGE......................................//
sakthipriya 0:7b4c00e3912f 100 void FCTN_BATTERYGAUGE_INIT()
sakthipriya 0:7b4c00e3912f 101 {
sakthipriya 0:7b4c00e3912f 102 disable_sleep();
sakthipriya 0:7b4c00e3912f 103 disable_hibernate();
sakthipriya 0:7b4c00e3912f 104 socChangeAlertEnabled(true); //enabling alert on soc changing by 1%
sakthipriya 0:7b4c00e3912f 105 emptyAlertThreshold(32);//setting empty alert threshold to 32% soc
sakthipriya 0:7b4c00e3912f 106 vAlertMinMaxThreshold();//set min, max value of Valrt register
sakthipriya 0:7b4c00e3912f 107 vResetThresholdSet();//set threshold voltage for reset
sakthipriya 0:7b4c00e3912f 108 vResetAlertEnabled(true);//enable alert on reset for V < Vreset
sakthipriya 0:7b4c00e3912f 109 }
sakthipriya 0:7b4c00e3912f 110
sakthipriya 0:7b4c00e3912f 111 void FCTN_BATTERYGAUGE_MAIN(float Battery_parameters[4])
sakthipriya 0:7b4c00e3912f 112 {
sakthipriya 1:446a959e36ce 113 printf("\n\r battery gauge \n");
sakthipriya 0:7b4c00e3912f 114
sakthipriya 0:7b4c00e3912f 115 float temp=25; //=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 116 tempCompensation(temp);
sakthipriya 0:7b4c00e3912f 117
sakthipriya 0:7b4c00e3912f 118
sakthipriya 0:7b4c00e3912f 119 Battery_parameters[0]=vcell();
sakthipriya 0:7b4c00e3912f 120 Battery_parameters[1]=soc();
sakthipriya 0:7b4c00e3912f 121 Battery_parameters[2]=crate();
sakthipriya 0:7b4c00e3912f 122
sakthipriya 0:7b4c00e3912f 123 printf("\nVcell=%f",vcell()); //remove this for final code
sakthipriya 0:7b4c00e3912f 124 printf("\nSOC=%f",soc()); //remove this for final code
sakthipriya 0:7b4c00e3912f 125 printf("\nC_rate=%f",crate()); //remove this for final code
sakthipriya 0:7b4c00e3912f 126
sakthipriya 0:7b4c00e3912f 127
sakthipriya 0:7b4c00e3912f 128 if (alerting()== true) //alert is on
sakthipriya 0:7b4c00e3912f 129 {
sakthipriya 0:7b4c00e3912f 130 Battery_parameters[3]=alertFlags();
sakthipriya 0:7b4c00e3912f 131 clearAlert();//clear alert
sakthipriya 0:7b4c00e3912f 132 clearAlertFlags();//clear all alert flags
sakthipriya 0:7b4c00e3912f 133 }
sakthipriya 0:7b4c00e3912f 134
sakthipriya 0:7b4c00e3912f 135 }
sakthipriya 0:7b4c00e3912f 136
sakthipriya 0:7b4c00e3912f 137 unsigned short read(char reg)
sakthipriya 0:7b4c00e3912f 138 {
sakthipriya 0:7b4c00e3912f 139
sakthipriya 0:7b4c00e3912f 140 //Create a temporary buffer
sakthipriya 0:7b4c00e3912f 141 char buff[2];
sakthipriya 0:7b4c00e3912f 142
sakthipriya 0:7b4c00e3912f 143 //Select the register
sakthipriya 0:7b4c00e3912f 144 m_I2C.write(m_ADDR, &reg, 1, true);
sakthipriya 0:7b4c00e3912f 145
sakthipriya 0:7b4c00e3912f 146 //Read the 16-bit register
sakthipriya 0:7b4c00e3912f 147 m_I2C.read(m_ADDR, buff, 2);
sakthipriya 0:7b4c00e3912f 148
sakthipriya 0:7b4c00e3912f 149 //Return the combined 16-bit value
sakthipriya 0:7b4c00e3912f 150 return (buff[0] << 8) | buff[1];
sakthipriya 0:7b4c00e3912f 151 }
sakthipriya 0:7b4c00e3912f 152
sakthipriya 1:446a959e36ce 153 unsigned short read_soc(char reg , bool ack = true)
sakthipriya 1:446a959e36ce 154 {
sakthipriya 1:446a959e36ce 155
sakthipriya 1:446a959e36ce 156 //Create a temporary buffer
sakthipriya 1:446a959e36ce 157 char buff[2];
sakthipriya 1:446a959e36ce 158
sakthipriya 1:446a959e36ce 159 //Select the register
sakthipriya 1:446a959e36ce 160 m_I2C.write(m_ADDR, &reg, 1, true);
sakthipriya 1:446a959e36ce 161
sakthipriya 1:446a959e36ce 162 //Read the 16-bit register
sakthipriya 1:446a959e36ce 163 ack = m_I2C.read(m_ADDR, buff, 2);
sakthipriya 1:446a959e36ce 164
sakthipriya 1:446a959e36ce 165 //Return the combined 16-bit value
sakthipriya 1:446a959e36ce 166 return (buff[0] << 8) | buff[1];
sakthipriya 1:446a959e36ce 167 }
sakthipriya 0:7b4c00e3912f 168
sakthipriya 0:7b4c00e3912f 169 void write(char reg, unsigned short data)
sakthipriya 0:7b4c00e3912f 170 {
sakthipriya 0:7b4c00e3912f 171 //Create a temporary buffer
sakthipriya 0:7b4c00e3912f 172 char buff[3];
sakthipriya 0:7b4c00e3912f 173
sakthipriya 0:7b4c00e3912f 174 //Load the register address and 16-bit data
sakthipriya 0:7b4c00e3912f 175 buff[0] = reg;
sakthipriya 0:7b4c00e3912f 176 buff[1] = data >> 8;
sakthipriya 0:7b4c00e3912f 177 buff[2] = data;
sakthipriya 0:7b4c00e3912f 178
sakthipriya 0:7b4c00e3912f 179 //Write the data
sakthipriya 0:7b4c00e3912f 180 m_I2C.write(m_ADDR, buff, 3);
sakthipriya 0:7b4c00e3912f 181 }
sakthipriya 0:7b4c00e3912f 182
sakthipriya 0:7b4c00e3912f 183
sakthipriya 0:7b4c00e3912f 184
sakthipriya 0:7b4c00e3912f 185 // Command the MAX17049 to perform a power-on reset
sakthipriya 0:7b4c00e3912f 186 void reset()
sakthipriya 0:7b4c00e3912f 187 {
sakthipriya 0:7b4c00e3912f 188 //Write the POR command
sakthipriya 0:7b4c00e3912f 189 write(REG_CMD, 0x5400);
sakthipriya 0:7b4c00e3912f 190 }
sakthipriya 0:7b4c00e3912f 191
sakthipriya 0:7b4c00e3912f 192 // Command the MAX17049 to perform a QuickStart
sakthipriya 0:7b4c00e3912f 193 void quickStart()
sakthipriya 0:7b4c00e3912f 194 {
sakthipriya 0:7b4c00e3912f 195 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 196 unsigned short value = read(REG_MODE);
sakthipriya 0:7b4c00e3912f 197
sakthipriya 0:7b4c00e3912f 198 //Set the QuickStart bit
sakthipriya 0:7b4c00e3912f 199 value |= (1 << 14);
sakthipriya 0:7b4c00e3912f 200
sakthipriya 0:7b4c00e3912f 201 //Write the value back out
sakthipriya 0:7b4c00e3912f 202 write(REG_MODE, value);
sakthipriya 0:7b4c00e3912f 203 }
sakthipriya 0:7b4c00e3912f 204
sakthipriya 0:7b4c00e3912f 205
sakthipriya 0:7b4c00e3912f 206 //disable sleep
sakthipriya 0:7b4c00e3912f 207 void disable_sleep()
sakthipriya 0:7b4c00e3912f 208 {
sakthipriya 0:7b4c00e3912f 209 unsigned short value = read(REG_MODE);
sakthipriya 0:7b4c00e3912f 210 value &= ~(1 << 13);
sakthipriya 0:7b4c00e3912f 211 write(REG_MODE, value);
sakthipriya 0:7b4c00e3912f 212 }
sakthipriya 0:7b4c00e3912f 213
sakthipriya 0:7b4c00e3912f 214 //disable the hibernate of the MAX17049
sakthipriya 0:7b4c00e3912f 215 void disable_hibernate()
sakthipriya 0:7b4c00e3912f 216 {
sakthipriya 0:7b4c00e3912f 217 write(REG_HIBRT, 0x0000);
sakthipriya 0:7b4c00e3912f 218 }
sakthipriya 0:7b4c00e3912f 219
sakthipriya 0:7b4c00e3912f 220
sakthipriya 0:7b4c00e3912f 221 // Enable or disable the SOC 1% change alert on the MAX17049
sakthipriya 0:7b4c00e3912f 222 void socChangeAlertEnabled(bool enabled)
sakthipriya 0:7b4c00e3912f 223 {
sakthipriya 0:7b4c00e3912f 224 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 225 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 226
sakthipriya 0:7b4c00e3912f 227 //Set or clear the ALSC bit
sakthipriya 0:7b4c00e3912f 228 if (enabled)
sakthipriya 0:7b4c00e3912f 229 value |= (1 << 6);
sakthipriya 0:7b4c00e3912f 230 else
sakthipriya 0:7b4c00e3912f 231 value &= ~(1 << 6);
sakthipriya 0:7b4c00e3912f 232
sakthipriya 0:7b4c00e3912f 233 //Write the value back out
sakthipriya 0:7b4c00e3912f 234 write(REG_CONFIG, value);
sakthipriya 0:7b4c00e3912f 235 }
sakthipriya 0:7b4c00e3912f 236
sakthipriya 0:7b4c00e3912f 237
sakthipriya 0:7b4c00e3912f 238 void compensation(char rcomp)
sakthipriya 0:7b4c00e3912f 239 {
sakthipriya 0:7b4c00e3912f 240 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 241 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 242
sakthipriya 0:7b4c00e3912f 243 //Update the register value
sakthipriya 0:7b4c00e3912f 244 value &= 0x00FF;
sakthipriya 0:7b4c00e3912f 245 value |= rcomp << 8;
sakthipriya 0:7b4c00e3912f 246
sakthipriya 0:7b4c00e3912f 247 //Write the value back out
sakthipriya 0:7b4c00e3912f 248 write(REG_CONFIG, value);
sakthipriya 0:7b4c00e3912f 249 }
sakthipriya 0:7b4c00e3912f 250
sakthipriya 0:7b4c00e3912f 251
sakthipriya 0:7b4c00e3912f 252 void tempCompensation(float temp)
sakthipriya 0:7b4c00e3912f 253 {
sakthipriya 0:7b4c00e3912f 254 //Calculate the new RCOMP value
sakthipriya 0:7b4c00e3912f 255 char rcomp;
sakthipriya 0:7b4c00e3912f 256 if (temp > 20.0) {
sakthipriya 0:7b4c00e3912f 257 rcomp = RCOMP0 + (temp - 20.0) * -0.5;
sakthipriya 0:7b4c00e3912f 258 } else {
sakthipriya 0:7b4c00e3912f 259 rcomp = RCOMP0 + (temp - 20.0) * -5.0;
sakthipriya 0:7b4c00e3912f 260 }
sakthipriya 0:7b4c00e3912f 261
sakthipriya 0:7b4c00e3912f 262 //Update the RCOMP value
sakthipriya 0:7b4c00e3912f 263 compensation(rcomp);
sakthipriya 0:7b4c00e3912f 264 }
sakthipriya 0:7b4c00e3912f 265
sakthipriya 0:7b4c00e3912f 266 // Command the MAX17049 to de-assert the ALRT pin
sakthipriya 0:7b4c00e3912f 267 void clearAlert()
sakthipriya 0:7b4c00e3912f 268 {
sakthipriya 0:7b4c00e3912f 269 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 270 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 271
sakthipriya 0:7b4c00e3912f 272 //Clear the ALRT bit
sakthipriya 0:7b4c00e3912f 273 value &= ~(1 << 5);
sakthipriya 0:7b4c00e3912f 274
sakthipriya 0:7b4c00e3912f 275 //Write the value back out
sakthipriya 0:7b4c00e3912f 276 write(REG_CONFIG, value);
sakthipriya 0:7b4c00e3912f 277 }
sakthipriya 0:7b4c00e3912f 278
sakthipriya 0:7b4c00e3912f 279
sakthipriya 0:7b4c00e3912f 280 //Set the SOC empty alert threshold of the MAX17049
sakthipriya 0:7b4c00e3912f 281 void emptyAlertThreshold(char threshold)
sakthipriya 0:7b4c00e3912f 282 {
sakthipriya 0:7b4c00e3912f 283 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 284 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 285
sakthipriya 0:7b4c00e3912f 286 //Update the register value
sakthipriya 0:7b4c00e3912f 287 value &= 0xFFE0;
sakthipriya 0:7b4c00e3912f 288 value |= 32 - threshold;
sakthipriya 0:7b4c00e3912f 289
sakthipriya 0:7b4c00e3912f 290 //Write the 16-bit register
sakthipriya 0:7b4c00e3912f 291 write(REG_CONFIG, value);
sakthipriya 0:7b4c00e3912f 292 }
sakthipriya 0:7b4c00e3912f 293
sakthipriya 0:7b4c00e3912f 294 // Set the low and high voltage alert threshold of the MAX17049
sakthipriya 0:7b4c00e3912f 295 void vAlertMinMaxThreshold()
sakthipriya 0:7b4c00e3912f 296 {
sakthipriya 0:7b4c00e3912f 297 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 298 unsigned short value = read(REG_VALRT);
sakthipriya 0:7b4c00e3912f 299
sakthipriya 0:7b4c00e3912f 300 //Mask off the old value
sakthipriya 0:7b4c00e3912f 301
sakthipriya 0:7b4c00e3912f 302 value = 0x96D2;
sakthipriya 0:7b4c00e3912f 303
sakthipriya 0:7b4c00e3912f 304 //Write the 16-bit register
sakthipriya 0:7b4c00e3912f 305 write(REG_VALRT, value);
sakthipriya 0:7b4c00e3912f 306 }
sakthipriya 0:7b4c00e3912f 307
sakthipriya 0:7b4c00e3912f 308
sakthipriya 0:7b4c00e3912f 309 // Set the reset voltage threshold of the MAX17049
sakthipriya 0:7b4c00e3912f 310 void vResetThresholdSet()
sakthipriya 0:7b4c00e3912f 311 {
sakthipriya 0:7b4c00e3912f 312 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 313 unsigned short value = read(REG_VRESET_ID);
sakthipriya 0:7b4c00e3912f 314
sakthipriya 0:7b4c00e3912f 315 //Mask off the old //value
sakthipriya 0:7b4c00e3912f 316 value &= 0x00FF;//Dis=0
sakthipriya 0:7b4c00e3912f 317
sakthipriya 0:7b4c00e3912f 318 value |= 0x9400;//corresponding to 2.5 V
sakthipriya 0:7b4c00e3912f 319
sakthipriya 0:7b4c00e3912f 320
sakthipriya 0:7b4c00e3912f 321 //Write the 16-bit register
sakthipriya 0:7b4c00e3912f 322 write(REG_VRESET_ID, value);
sakthipriya 0:7b4c00e3912f 323 }
sakthipriya 0:7b4c00e3912f 324
sakthipriya 0:7b4c00e3912f 325
sakthipriya 0:7b4c00e3912f 326 // Enable or disable the voltage reset alert on the MAX17049
sakthipriya 0:7b4c00e3912f 327 void vResetAlertEnabled(bool enabled)
sakthipriya 0:7b4c00e3912f 328 {
sakthipriya 0:7b4c00e3912f 329 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 330 unsigned short value = read(REG_STATUS);
sakthipriya 0:7b4c00e3912f 331
sakthipriya 0:7b4c00e3912f 332 //Set or clear the EnVR bit
sakthipriya 0:7b4c00e3912f 333 if (enabled)
sakthipriya 0:7b4c00e3912f 334 value |= (1 << 14);
sakthipriya 0:7b4c00e3912f 335 else
sakthipriya 0:7b4c00e3912f 336 value &= ~(1 << 14);
sakthipriya 0:7b4c00e3912f 337
sakthipriya 0:7b4c00e3912f 338 //Write the value back out
sakthipriya 0:7b4c00e3912f 339 write(REG_STATUS, value);
sakthipriya 0:7b4c00e3912f 340 }
sakthipriya 0:7b4c00e3912f 341
sakthipriya 0:7b4c00e3912f 342 //Get the current alert flags on the MAX17049
sakthipriya 0:7b4c00e3912f 343 //refer datasheet-status registers section to decode it.
sakthipriya 0:7b4c00e3912f 344 char alertFlags()
sakthipriya 0:7b4c00e3912f 345 {
sakthipriya 0:7b4c00e3912f 346 //Read the 16-bit register value
sakthipriya 0:7b4c00e3912f 347 unsigned short value = read(REG_STATUS);
sakthipriya 0:7b4c00e3912f 348
sakthipriya 0:7b4c00e3912f 349 //Return only the flag bits
sakthipriya 0:7b4c00e3912f 350 return (value >> 8) & 0x3F;
sakthipriya 0:7b4c00e3912f 351 }
sakthipriya 0:7b4c00e3912f 352
sakthipriya 0:7b4c00e3912f 353 // Clear all the alert flags on the MAX17049
sakthipriya 0:7b4c00e3912f 354 void clearAlertFlags()
sakthipriya 0:7b4c00e3912f 355 {
sakthipriya 0:7b4c00e3912f 356 //Read the current 16-bit register value
sakthipriya 0:7b4c00e3912f 357 unsigned short value = read(REG_STATUS);
sakthipriya 0:7b4c00e3912f 358
sakthipriya 0:7b4c00e3912f 359 //Clear the specified flag bits
sakthipriya 0:7b4c00e3912f 360 value &= ~( 0x3F<< 8);
sakthipriya 0:7b4c00e3912f 361
sakthipriya 0:7b4c00e3912f 362 //Write the value back out
sakthipriya 0:7b4c00e3912f 363 write(REG_STATUS, value);
sakthipriya 0:7b4c00e3912f 364 }
sakthipriya 0:7b4c00e3912f 365
sakthipriya 0:7b4c00e3912f 366 // Get the current cell voltage measurement of the MAX17049
sakthipriya 0:7b4c00e3912f 367 float vcell()
sakthipriya 0:7b4c00e3912f 368 {
sakthipriya 1:446a959e36ce 369
sakthipriya 0:7b4c00e3912f 370 //Read the 16-bit raw Vcell value
sakthipriya 0:7b4c00e3912f 371 unsigned short value = read(REG_VCELL);
sakthipriya 0:7b4c00e3912f 372
sakthipriya 0:7b4c00e3912f 373 //Return Vcell in volts
sakthipriya 0:7b4c00e3912f 374 return value * 0.000078125*2;
sakthipriya 0:7b4c00e3912f 375 }
sakthipriya 0:7b4c00e3912f 376
sakthipriya 0:7b4c00e3912f 377 // Get the current state of charge measurement of the MAX17049 as a float
sakthipriya 0:7b4c00e3912f 378 float soc()
sakthipriya 0:7b4c00e3912f 379 {
sakthipriya 1:446a959e36ce 380 //unsigned short value;
sakthipriya 0:7b4c00e3912f 381 char buff[2];
sakthipriya 1:446a959e36ce 382 bool ack;
sakthipriya 0:7b4c00e3912f 383 //Read the 16-bit raw SOC value
sakthipriya 1:446a959e36ce 384 unsigned short value = read_soc(REG_SOC, ack);
sakthipriya 0:7b4c00e3912f 385
sakthipriya 0:7b4c00e3912f 386 //Return SOC in percent
sakthipriya 2:c823d84b4cb0 387 if(ack == 0)
sakthipriya 0:7b4c00e3912f 388 return value * 0.00390625;
sakthipriya 2:c823d84b4cb0 389 else
sakthipriya 2:c823d84b4cb0 390 return 200;
sakthipriya 0:7b4c00e3912f 391 }
sakthipriya 0:7b4c00e3912f 392
sakthipriya 0:7b4c00e3912f 393
sakthipriya 0:7b4c00e3912f 394
sakthipriya 0:7b4c00e3912f 395 // Get the current C rate measurement of the MAX17049
sakthipriya 0:7b4c00e3912f 396 float crate()
sakthipriya 0:7b4c00e3912f 397 {
sakthipriya 0:7b4c00e3912f 398 //Read the 16-bit raw C/Rate value
sakthipriya 0:7b4c00e3912f 399 short value = read(REG_CRATE);
sakthipriya 0:7b4c00e3912f 400
sakthipriya 0:7b4c00e3912f 401 //Return C/Rate in %/hr
sakthipriya 0:7b4c00e3912f 402 return value * 0.208;
sakthipriya 0:7b4c00e3912f 403 }
sakthipriya 0:7b4c00e3912f 404
sakthipriya 0:7b4c00e3912f 405 // Determine whether or not the MAX17049 is asserting the ALRT pin
sakthipriya 0:7b4c00e3912f 406 bool alerting()
sakthipriya 0:7b4c00e3912f 407 {
sakthipriya 0:7b4c00e3912f 408 //Read the 16-bit register value
sakthipriya 0:7b4c00e3912f 409 unsigned short value = read(REG_CONFIG);
sakthipriya 0:7b4c00e3912f 410
sakthipriya 0:7b4c00e3912f 411 //Return the status of the ALRT bit
sakthipriya 0:7b4c00e3912f 412 if (value & (1 << 5))
sakthipriya 0:7b4c00e3912f 413 return true;
sakthipriya 0:7b4c00e3912f 414 else
sakthipriya 0:7b4c00e3912f 415 return false;
sakthipriya 2:c823d84b4cb0 416 }
sakthipriya 2:c823d84b4cb0 417
sakthipriya 2:c823d84b4cb0 418 //.............................Battery board Temp sensor........................//
sakthipriya 2:c823d84b4cb0 419 void FCTN_BATTTEMP_INIT()
sakthipriya 2:c823d84b4cb0 420 {
sakthipriya 2:c823d84b4cb0 421 ssn1=1;ssn2=1;
sakthipriya 2:c823d84b4cb0 422 //PS=0;
sakthipriya 2:c823d84b4cb0 423 //HS=0;
sakthipriya 2:c823d84b4cb0 424 spi_bt.format(8,3);
sakthipriya 2:c823d84b4cb0 425 spi_bt.frequency(1000000);
sakthipriya 2:c823d84b4cb0 426 }
sakthipriya 2:c823d84b4cb0 427
sakthipriya 2:c823d84b4cb0 428 void FCTN_BATT_TEMP_SENSOR_MAIN(float temp[2])
sakthipriya 2:c823d84b4cb0 429 {
sakthipriya 2:c823d84b4cb0 430 uint8_t MSB, LSB;
sakthipriya 2:c823d84b4cb0 431 int16_t bit_data;
sakthipriya 2:c823d84b4cb0 432 float sensitivity=0.0078125; //1 LSB = sensitivity degree celcius
sakthipriya 2:c823d84b4cb0 433 wait_ms(320);
sakthipriya 2:c823d84b4cb0 434 ssn1=0;
sakthipriya 2:c823d84b4cb0 435
sakthipriya 2:c823d84b4cb0 436 spi_bt.write(0x80);//Reading digital data from Sensor 1
sakthipriya 2:c823d84b4cb0 437 LSB = spi_bt.write(0x00);//LSB first
sakthipriya 2:c823d84b4cb0 438 wait_ms(0);
sakthipriya 2:c823d84b4cb0 439 MSB = spi_bt.write(0x00);
sakthipriya 2:c823d84b4cb0 440 wait_ms(10);
sakthipriya 2:c823d84b4cb0 441 pc_eps.printf("%d %d\n",MSB,LSB);
sakthipriya 2:c823d84b4cb0 442 bit_data= ((uint16_t)MSB<<8)|LSB;
sakthipriya 2:c823d84b4cb0 443 wait_ms(10);
sakthipriya 2:c823d84b4cb0 444 temp[0]=(float)bit_data*sensitivity;//Converting into decimal value
sakthipriya 2:c823d84b4cb0 445 ssn1=1;
sakthipriya 2:c823d84b4cb0 446 wait_ms(10);
sakthipriya 2:c823d84b4cb0 447 ssn2=0;//Reading data from sensor 2
sakthipriya 2:c823d84b4cb0 448 spi_bt.write(0x80);
sakthipriya 2:c823d84b4cb0 449 LSB = spi_bt.write(0x00);
sakthipriya 2:c823d84b4cb0 450 wait_ms(10);
sakthipriya 2:c823d84b4cb0 451 MSB = spi_bt.write(0x00);
sakthipriya 2:c823d84b4cb0 452 wait_ms(10);
sakthipriya 2:c823d84b4cb0 453 bit_data= ((int16_t)MSB<<8)|LSB;
sakthipriya 2:c823d84b4cb0 454 wait_ms(10);
sakthipriya 2:c823d84b4cb0 455 temp[1]=(float)bit_data*sensitivity;
sakthipriya 2:c823d84b4cb0 456 ssn2=1;
sakthipriya 2:c823d84b4cb0 457
sakthipriya 2:c823d84b4cb0 458 }