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ACS completed fully. All cases to be tested
Dependencies: FreescaleIAP mbed-rtos mbed
Fork of ACS_Flowchart_BAE by
EPS.cpp
- Committer:
- sakthipriya
- Date:
- 2015-12-24
- Revision:
- 0:7b4c00e3912f
- Child:
- 1:446a959e36ce
File content as of revision 0:7b4c00e3912f:
#include "EPS.h" #include "pin_config.h" /***********************************************global variable declaration***************************************************************/ extern uint32_t BAE_STATUS; extern uint32_t BAE_ENABLE; //m_I2C.frequency(10000) const char RCOMP0= 0x97; BAE_HK_actual actual_data; BAE_HK_quant quant_data; BAE_HK_min_max bae_HK_minmax; BAE_HK_arch arch_data; //......................................Peripheral declarations.........................................................// Serial pc_eps(USBTX,USBRX); I2C m_I2C(PIN85,PIN84); DigitalOut TRXY(TRXY_DR_EN); //active high DigitalOut TRZ(TRZ_DR_EN); //active high DigitalOut EN3V3A(ENBL3V3A); DigitalOut EN_BTRY_HT(BATT_HEAT); //DigitalIn BTRY_HT_OUTPUT(BATT_HEAT_OUTPUT); AnalogIn Vbatt_ang(VBATT); //*********************************************************flags********************************************************// extern char EPS_INIT_STATUS ; extern char EPS_BATTERY_GAUGE_STATUS ; extern char EPS_MAIN_STATUS; extern char EPS_BATTERY_TEMP_STATUS ; extern char EPS_STATUS ; extern char EPS_BATTERY_HEAT_ENABLE ; //........................................... FUCTIONS.................................................// void FCTN_EPS_INIT() { printf("\n\r eps init \n"); EPS_INIT_STATUS = 's' ; //set EPS_INIT_STATUS flag // FLAG(); FCTN_BATTERYGAUGE_INIT(); //FCTN_EPS_BTEMP_INIT(); EN3V3A = 1; //enable dc dc converter A char value=alertFlags(); unsigned short value_u= (short int )value; value_u &=0x0001; if(value_u ==0x0001) // battery gauge not initialised { actual_data.power_mode = 1; EPS_BATTERY_GAUGE_STATUS = 'c'; //clear EPS_BATTERY_GAUGE_STATUS } else { actual_data.Batt_gauge_actual[1] = soc(); actual_data.Batt_voltage_actual = Vbatt_ang.read()*3.3; FCTN_EPS_POWERMODE(actual_data.Batt_gauge_actual[1]); EPS_BATTERY_GAUGE_STATUS = 's'; //set EPS_BATTERY_GAUGE_STATUS } EPS_INIT_STATUS = 'c' ; //clear EPS_INIT_STATUS flag } //----------------------------------------------------Power algo code--------------------------------------------------------------------// void FCTN_EPS_POWERMODE(float soc) //dummy algo { if(soc >= 80) actual_data.power_mode = 4; else if(soc >= 70 & soc < 80) actual_data.power_mode = 3; else if(soc >= 60 & soc < 70) actual_data.power_mode = 2; else if(soc < 60) actual_data.power_mode = 1; } //...................................................HK...........................................// int quantiz(float start,float step,float x) { int y=(x-start)/step; if(y<=0)y=0; if(y>=255)y=255; return y; } void HK_main() { } //............................................BATTERY GAUGE......................................// void FCTN_BATTERYGAUGE_INIT() { disable_sleep(); disable_hibernate(); socChangeAlertEnabled(true); //enabling alert on soc changing by 1% emptyAlertThreshold(32);//setting empty alert threshold to 32% soc vAlertMinMaxThreshold();//set min, max value of Valrt register vResetThresholdSet();//set threshold voltage for reset vResetAlertEnabled(true);//enable alert on reset for V < Vreset } void FCTN_BATTERYGAUGE_MAIN(float Battery_parameters[4]) { 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. tempCompensation(temp); Battery_parameters[0]=vcell(); Battery_parameters[1]=soc(); Battery_parameters[2]=crate(); printf("\nVcell=%f",vcell()); //remove this for final code printf("\nSOC=%f",soc()); //remove this for final code printf("\nC_rate=%f",crate()); //remove this for final code if (alerting()== true) //alert is on { Battery_parameters[3]=alertFlags(); clearAlert();//clear alert clearAlertFlags();//clear all alert flags } } unsigned short read(char reg) { //Create a temporary buffer char buff[2]; //Select the register m_I2C.write(m_ADDR, ®, 1, true); //Read the 16-bit register m_I2C.read(m_ADDR, buff, 2); //Return the combined 16-bit value return (buff[0] << 8) | buff[1]; } void write(char reg, unsigned short data) { //Create a temporary buffer char buff[3]; //Load the register address and 16-bit data buff[0] = reg; buff[1] = data >> 8; buff[2] = data; //Write the data m_I2C.write(m_ADDR, buff, 3); } // Command the MAX17049 to perform a power-on reset void reset() { //Write the POR command write(REG_CMD, 0x5400); } // Command the MAX17049 to perform a QuickStart void quickStart() { //Read the current 16-bit register value unsigned short value = read(REG_MODE); //Set the QuickStart bit value |= (1 << 14); //Write the value back out write(REG_MODE, value); } //disable sleep void disable_sleep() { unsigned short value = read(REG_MODE); value &= ~(1 << 13); write(REG_MODE, value); } //disable the hibernate of the MAX17049 void disable_hibernate() { write(REG_HIBRT, 0x0000); } // Enable or disable the SOC 1% change alert on the MAX17049 void socChangeAlertEnabled(bool enabled) { //Read the current 16-bit register value unsigned short value = read(REG_CONFIG); //Set or clear the ALSC bit if (enabled) value |= (1 << 6); else value &= ~(1 << 6); //Write the value back out write(REG_CONFIG, value); } void compensation(char rcomp) { //Read the current 16-bit register value unsigned short value = read(REG_CONFIG); //Update the register value value &= 0x00FF; value |= rcomp << 8; //Write the value back out write(REG_CONFIG, value); } void tempCompensation(float temp) { //Calculate the new RCOMP value char rcomp; if (temp > 20.0) { rcomp = RCOMP0 + (temp - 20.0) * -0.5; } else { rcomp = RCOMP0 + (temp - 20.0) * -5.0; } //Update the RCOMP value compensation(rcomp); } // Command the MAX17049 to de-assert the ALRT pin void clearAlert() { //Read the current 16-bit register value unsigned short value = read(REG_CONFIG); //Clear the ALRT bit value &= ~(1 << 5); //Write the value back out write(REG_CONFIG, value); } //Set the SOC empty alert threshold of the MAX17049 void emptyAlertThreshold(char threshold) { //Read the current 16-bit register value unsigned short value = read(REG_CONFIG); //Update the register value value &= 0xFFE0; value |= 32 - threshold; //Write the 16-bit register write(REG_CONFIG, value); } // Set the low and high voltage alert threshold of the MAX17049 void vAlertMinMaxThreshold() { //Read the current 16-bit register value unsigned short value = read(REG_VALRT); //Mask off the old value value = 0x96D2; //Write the 16-bit register write(REG_VALRT, value); } // Set the reset voltage threshold of the MAX17049 void vResetThresholdSet() { //Read the current 16-bit register value unsigned short value = read(REG_VRESET_ID); //Mask off the old //value value &= 0x00FF;//Dis=0 value |= 0x9400;//corresponding to 2.5 V //Write the 16-bit register write(REG_VRESET_ID, value); } // Enable or disable the voltage reset alert on the MAX17049 void vResetAlertEnabled(bool enabled) { //Read the current 16-bit register value unsigned short value = read(REG_STATUS); //Set or clear the EnVR bit if (enabled) value |= (1 << 14); else value &= ~(1 << 14); //Write the value back out write(REG_STATUS, value); } //Get the current alert flags on the MAX17049 //refer datasheet-status registers section to decode it. char alertFlags() { //Read the 16-bit register value unsigned short value = read(REG_STATUS); //Return only the flag bits return (value >> 8) & 0x3F; } // Clear all the alert flags on the MAX17049 void clearAlertFlags() { //Read the current 16-bit register value unsigned short value = read(REG_STATUS); //Clear the specified flag bits value &= ~( 0x3F<< 8); //Write the value back out write(REG_STATUS, value); } // Get the current cell voltage measurement of the MAX17049 float vcell() { //Read the 16-bit raw Vcell value unsigned short value = read(REG_VCELL); //Return Vcell in volts return value * 0.000078125*2; } // Get the current state of charge measurement of the MAX17049 as a float float soc() { unsigned short value; char buff[2]; //Select the register m_I2C.write(m_ADDR, ®_SOC, 1, true); //Read the 16-bit register bool ack = true; ack = m_I2C.read(m_ADDR, buff, 2); //Return the combined 16-bit value value = (buff[0] << 8) | buff[1]; /* //Read the 16-bit raw SOC value unsigned short value = read(REG_SOC);*/ //Return SOC in percent if(ack == 0) return value * 0.00390625; else return 200; } // Get the current C rate measurement of the MAX17049 float crate() { //Read the 16-bit raw C/Rate value short value = read(REG_CRATE); //Return C/Rate in %/hr return value * 0.208; } // Determine whether or not the MAX17049 is asserting the ALRT pin bool alerting() { //Read the 16-bit register value unsigned short value = read(REG_CONFIG); //Return the status of the ALRT bit if (value & (1 << 5)) return true; else return false; }