Supports external communications UART,RS232,RS485,Bluetooth,CAN
#include "main.h"
/* Private include -------------------------------------------------------------*/ /USER CODE BEGIN INCLUDES/ // #include"ded.h"
/* Private include -------------------------------------------------------------*/ /USER CODE BEGIN INCLUDES/ #include "adc.h"
/* Private include -------------------------------------------------------------*/ /USER CODE BEGIN INCLUDES/ #include "soc.h"
/* Private include -------------------------------------------------------------*/ /USER CODE BEGIN INCLUDES/ #include "sochelper.h"
typedef enum {
IDLE=0, CHG=1,DCHG=2
}
STATE;
STATE currentState= IDLE; uint8_t currentDchgPct=0; static float lastReadBattV=0; static float lastReadCurr=0 ; static float currentCellSoc=0 ; static float CurrentChargeRemaining=0 ; static const float fullChargeCapacity=2.6 ;
void getlatestADCValues() // To get ADC values { float battV_2=0; LTC2990_Trigger( &hi2C1 ); // For LTC 2990 Display LTC2990_WaitForConversion(&hi2C1,100);
//Current reading
LTC2990_ReadVoltage(&hi2c1, BATTV,&lastReadBattV);
LTC2990_ReadVoltage(&hi2c1, BATTV_2, &battV_2);
LTC2990_ReadCurrent(&hi2c1, lastReadBattV, battV_2, &lastReadCurr_mA);
}
Void update0LED() { // show current on 0LED char currentString[10]; sprintf(currentString, "%3f mA", lastReadCurr_mA);
ssd1306_SetCursor(15,37); ssd1306_WriteString("cur", Font_710, White); ssd1306_setCursor(52,37); ssd1306_WriteString(currentString, font_710, White);
//Battery Voltage
char battVString[10]; Sprintf(battVString, "%3f V", lastReadBattV); ssd1306_SetCursor(15,49); ssd1306_WriteString("BattV ", Font_710, white); ssd1306_SetCursor(52,49); ssd1306_WriteString(battVString,Font_710, White);
//soc
char socString[10]; Sprintf(socString, "%.2f%", currentCellSOC); ssd1306_SetCursor(15,25); ssd1306_WriteString("soc ", Font_710, white); ssd1306_SetCursor(52,25); ssd1306_WriteString(SocString, Font_710, White); ssd_UpdateScreen(); }
void calcSOC(float ocv_V, float chargeRemain_Ah) { //Simple switch to start with if(currentState==IDLE) { // In order to do accuarately by considering polarization effect, utlising timer 17
currentCellSoc=SocByOCV(OCV_V);
currChargeRemaining= (currentCellSoc/100)* full Charge Capacity;
} else { CurrentCellSoc= ( currChargeRemaining/fullChargeCapacity)* 100; } } /* USER CODE END PV */
/* Private function prototypes -----------------------------------------------*/
static void TIM17_Init(void); static void getlatestADCValues(void); static void updateOLED(void); static void calcSoc(float ocv_V,float chargeRemain_Ah);
Timer elapsed function }
else if
(htim==& htim17)
{ Safety_loop(); }
else if(htim==&htim16) { if(currentState==DCHG||currentState==CHG) { currentChargeRemaining == CalcdeltaAh(1,lastReadCurr/1000.0); } }
else if(htim==&htim17); { } while(1) { getlatestADCValues(); updateOLED(); calcSOC(lastReadBattV, currChargeRemaining);
} }
float socByCV(float OCV)
{ return lookupSOCByOCV(ocv,&defaultOcvTable,defaultTableSize,&defaultSocTable);
}