sakthi priya amirtharaj
/
BAE_vr2_1_3
i2c working with old hk
Fork of BAE_vr2_1_1 by
Diff: HK.h
- Revision:
- 14:ef6be8ac6569
- Parent:
- 13:1b37d98840d3
diff -r 1b37d98840d3 -r ef6be8ac6569 HK.h --- a/HK.h Wed Dec 17 05:25:04 2014 +0000 +++ b/HK.h Wed Dec 17 06:06:59 2014 +0000 @@ -1,469 +1,36 @@ -//to be saved as HK.h - #include "mbed.h" #define tstart -40 #define tstep 8 -#define tstep_thermistor 8//verify!! -#define tstart_thermistor -40 #define vstart 3.3 #define vstep 0.84667 #define cstart 0.0691 #define cstep 0.09133 #define rsens 0.095 -#define Vcell_start 0 -#define Vcell_step 0.56//assuming vcell ranges from 0-8.4 -#define soc_start 0 //======== -#define soc_step 6.6667//assuming soc ranges from 0-100 -#define crate_start 0//------------ -#define crate_step 6.6667//assuming crate ranges from 0-100 -#define Bnewvalue_start -100//in microTesla...max possible field is .0001 T -#define Bnewvalue_step 13.333 -#define AngularSpeed_start -10//max possible ang. velocity in space is 10 deg/sec -#define AngularSpeed_step 1.3333 -typedef struct SensorData -{ - float Voltage[16]; - float Current[8]; - float Temperature[1]; - float PanelTemperature[4]; - float Vcell; - float soc; - char alerts; - //(alerts[0]=1)-> reset indicator=>dont care - //(alerts[1]=1)-> Vcell>ValrtMax(5.1V)->will always be on->dont care - //(alerts[2]=1)-> Vcell<ValrtMin(5.1V)->indicates deep discharge - //(alerts[3]=1)-> Vcell<Vreset(2.5V) - //(alerts[5]=1)-> Soc CROSSES the threshold value - //(alerts[6]=1)-> alert on (alerts[3]) enabled when Vcell<Vreset(here we set it to be 2.5V) - float crate; - float BatteryTemperature; //to be populated - char faultpoll; //polled faults - char faultir; //interrupted faults - char power_mode; //power modes - - float AngularSpeed[3]; //in order x,y,z - float Bnewvalue[3]; //in order Bx,By,Bz - - -} SensorData; + -typedef struct SensorDataQuantised { - char Voltage[8]; - char Current[4]; - char Temperature[1]; - char PanelTemperature[2];//read by the 4 thermistors on solar panels - char Vcell_soc;//MSBs correspond to Vcell, LSBs to Soc - char alerts;//UNQUANTISED - //(alerts[0]=1)-> reset indicator=>dont care - //(alerts[1]=1)-> Vcell>ValrtMax(5.1V)->will always be high->dont care - //(alerts[2]=1)-> Vcell<ValrtMin(5.1V)->indicates deep discharge - //(alerts[3]=1)-> Vcell<Vreset(2.5V) - //(alerts[5]=1)-> Soc CROSSES the threshold value - //(alerts[6]=1)-> alert on (alerts[3]) enabled when Vcell<Vreset(here we set it to be 2.5V) - char crate; - char BatteryTemperature; //to be populated - char faultpoll; //polled faults - char faultir; //interrupted faults - char power_mode; //power modes +struct SensorData { + char Voltage[10]; + char Current[10]; + char Temperature[10]; + char faultpoll; + char faultir; + char power_mode; + //float Battery[2]; +}; + + +typedef struct ShortBeacon { + char Voltage[1]; char AngularSpeed[2]; - char Bnewvalue[2]; - - //float magnetometer,gyro=>to be addes -} SensorDataQuantised; - - -typedef struct ShortBeacon -{ - char Voltage[1]; //battery voltage from gauge, needs to be quantised - char AngularSpeed[2]; //all the 3 data - char SubsystemStatus[1]; //power modes - char Temp[2]; //temp of solar panel - //Temp[0]'s LSB=> PanelTemperature[0], Temp[0]'s MSB=> PanelTemperature[1], Temp[1]'s LSB=> PanelTemperature[2], Temp[1]'s MSB=> PanelTemperature[3] - char ErrorFlag[1]; //fault -}ShortBeacy; - - + char SubsystemStatus[1]; + char Temp[3]; + char ErrorFlag[1]; +}ShortBeacy; + void FUNC_HK_MAIN(); int quantiz(float start,float step,float x); -void init_beacon(ShortBeacy* x,SensorDataQuantised y); - - -//--------------------------------following is header details for battery gauge------------------------------------------- - - - -#define MAX17048_H - -class MAX17048 -{ -public: - /** The default compensation value for the MAX17048 - */ - static const char RCOMP0= 0x97; - - /** Represents the different alert flags for the MAX17048 - */ - enum AlertFlags { - ALERT_RI = (1 << 0), /**< Reset indicator */ - ALERT_VH = (1 << 1), /**< Voltage high alert */ - ALERT_VL = (1 << 2), /**< Voltage low alert */ - ALERT_VR = (1 << 3), /**< Voltage reset alert */ - ALERT_HD = (1 << 4), /**< SOC low alert */ - ALERT_SC = (1 << 5) /**< SOC change alert */ - }; - - //parametrised constructor - MAX17048(PinName sda, PinName scl, int hz = 400000): m_I2C(sda, scl)//should it be same as the uC clock freq - { - //Set the I2C bus frequency - m_I2C.frequency(hz); - } - - // Probe for the MAX17048 and indicate if it's present on the bus - bool open() - { - //Probe for the MAX17048 using a Zero Length Transfer - if (!m_I2C.write(m_ADDR, NULL, 0)) { - //Return success - return true; - } else { - //Return failure - return false; - } - } - - - // Command the MAX17048 to perform a power-on reset - void reset() - { - //Write the POR command - write(REG_CMD, 0x5400); - } - - // Command the MAX17048 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 MAX17048 - void disable_hibernate() - { - write(REG_HIBRT, 0x0000); - } - - // Determine whether or not the SOC 1% change alert is enabled on the MAX17048 - bool socChangeAlertEnabled() - { - //Read the 16-bit register value - unsigned short value = read(REG_CONFIG); - - //Return the status of the ALSC bit - if (value & (1 << 6)) - return true; - else - return false; - } - - // Enable or disable the SOC 1% change alert on the MAX17048 - 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); -} - - // Determine whether or not the MAX17048 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; - } - - // Command the MAX17048 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); - } - // return The current SOC empty alert threshold in %. - char emptyAlertThreshold() - { - //Read the 16-bit register value - unsigned short value = read(REG_CONFIG); - - //Extract the threshold - return 32 - (value & 0x001F); - } - - //Set the SOC empty alert threshold of the MAX17048 - 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); - } - //return The current low voltage alert threshold in volts. - float vAlertMinThreshold() - { - //Read the 16-bit register value - unsigned short value = read(REG_VALRT); - - //Extract the alert threshold - return (value >> 8) * 0.02;//least count is 20mV - } - // Set the low and high voltage alert threshold of the MAX17048 - void vAlertMinMaxThreshold() - { - //Read the current 16-bit register value - unsigned short value = read(REG_VALRT); - - //Mask off the old value - - value = 0xFFFF; - - //Write the 16-bit register - write(REG_VALRT, value); - } - - //return The current high voltage alert threshold in volts. - float vAlertMaxThreshold() - { - //Read the 16-bit register value - unsigned short value = read(REG_VALRT); - - //Extract the active threshold - return (value & 0x00FF) * 0.02; - } - - //return The current reset voltage threshold in volts. - float vResetThreshold() - { - //Read the 16-bit register value - unsigned short value = read(REG_VRESET_ID); - - //Extract the threshold - return (value >> 9) * 0.04; - } - - // Set the reset voltage threshold of the MAX17048 - 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 |= 0x7C00;//corresponding to 2.5 V - - - //Write the 16-bit register - write(REG_VRESET_ID, value); - } - - // Get the factory programmed 8-bit ID of the MAX17048 - char id() - { - //Read the 16-bit register value - unsigned short value = read(REG_VRESET_ID); - - //Return only the ID bits - return value; - } - - // Determine whether or not the voltage reset alert is enabled on the MAX17048 - bool vResetAlertEnabled() - { - //Read the 16-bit register value - unsigned short value = read(REG_STATUS); - - //Return the status of the EnVR bit - if (value & (1 << 14)) - return true; - else - return false; - } - - // Enable or disable the voltage reset alert on the MAX17048 - 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 MAX17048 - //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 MAX17048 - 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 MAX17048 - float vcell() - { - //Read the 16-bit raw Vcell value - unsigned short value = read(REG_VCELL); - - //Return Vcell in volts - return value * 0.000078125; - } - - // Get the current state of charge measurement of the MAX17048 as a float - float soc() - { - //Read the 16-bit raw SOC value - unsigned short value = read(REG_SOC); - - //Return SOC in percent - return value * 0.00390625; - } - - // Get the current state of charge measurement of the MAX17048 as an int - int soc_int() - { - //Read the 16-bit raw SOC value - unsigned short value = read(REG_SOC); - - //Return only the top byte - return value >> 8; - } - - // Get the current C rate measurement of the MAX17048 - float crate() - { - //Read the 16-bit raw C/Rate value - short value = read(REG_CRATE); - - //Return C/Rate in %/hr - return value * 0.208; - } - - - //I2C register addresses - enum Register { - REG_VCELL = 0x02, - REG_SOC = 0x04, - REG_MODE = 0x06, - REG_VERSION = 0x08, - REG_HIBRT = 0x0A, - REG_CONFIG = 0x0C, - REG_VALRT = 0x14, - REG_CRATE = 0x16, - REG_VRESET_ID = 0x18, - REG_STATUS = 0x1A, - REG_TABLE = 0x40, - REG_CMD = 0xFE - }; - - //Member constants - static const int m_ADDR=(0x36 << 1); - - //Member variables - I2C m_I2C; - - //Internal functions - 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); - } -}; - - - void FUNC_BATTERYGAUGE_MAIN(float[]); +