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BMS_new_180602_WiFi_tryPROGMEM.ino
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BMS_new_180602_WiFi_tryPROGMEM.ino
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#include <LiquidCrystal.h>
const char string_0[] PROGMEM = "HTTP/1.0 200 OK\r\nContent-Type: text/html\r\nContent-Length: xxx\r\n\r\n<!DOCTYPE html><html><head><title>Will's PowerWall</title></head>";
const char string_1[] PROGMEM = "<body background = \"https://cdn.wallpapersafari.com/18/9/3sTDBS.jpg\">";
const char string_2[] PROGMEM = "<h1><center><b>Will's PowerWall Status</b></center></h1><table border = \"0\" width = 100%>";
const char string_3[] PROGMEM = "<tr><td width = 33%><h2><center>Commanded </center></h2></td><td width = 34%><h2><center>Inverter Status</center></h2></td><td width = 33%><h2><center>Pack Voltage</center></h2></td></tr><tr><td><h3><center>";
const char string_4[] PROGMEM = "</center></h3></td><td><h3><center>";
const char string_5[] PROGMEM = " V</center></h3></td></tr><tr><td><h3></br></h3></td></tr><tr><td><h2><center>Lowest Cell</center></h2></td><td><h2><center>Why Off?</center></h2></td><td><h2><center>Charge Time</center></h2></td></tr><tr><td><h3><center>";
const char string_6[] PROGMEM = "v </center></h3></td><td><h3><center> ";
const char string_7[] PROGMEM = " </center></h3></td><td><h3><center> ";
const char string_8[] PROGMEM = " Mins</center></h3></td></tr></table></body></html>\r\n";
const char* const string_table[] PROGMEM =
{
string_0,
string_1,
string_2,
string_3,
string_4,
string_5,
string_6,
string_7,
string_8,
};
char longstring[1000];char str1[11];
const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);
int lowloaddisc = 1; //0 means disabled, 1 means enabled, 2, while running, means currently low-load powered-down
int RemoteEnable = 0;
int RemoteInputPin = 9;
int InverterControlPin = 6;
int InverterStatusPin = 8;
int ledpin = 13;
float TurnOnVoltage = 15.3;
float ShutdownVoltage = 11.80;
float ShutdownCellVoltage = 2.70;
unsigned long PowerDownMillis = 0;
unsigned long PowerUpMillis = 0;
unsigned long OnTime = 0;
unsigned long PUDelay = 300000; //300000 for 5 minutes-ish
int i;float myArray[5];
int CurrentInverterStatus = 2;
int UserDesiredInverterStatus;
float PackVoltage; float CellVoltage0; float CellVoltage1; float CellVoltage2; float CellVoltage3;
float LowestCellVoltage; float HighestCellVoltage; float cellArray[4];
int connectionId;
String cipSend;
void setup() {
Serial.begin(115200);
lcd.begin(16, 2);
pinMode(InverterControlPin, OUTPUT);
pinMode(ledpin, OUTPUT);
pinMode(InverterStatusPin, INPUT);
pinMode(RemoteInputPin, INPUT);
delay(2000);
sendData("AT+RST\r\n",6000); // reset module
// sendData("AT+CWMODE_DEF=1\r\n", 5000); // I used a command like this to setup esp8266 initially.
// sendData("AT+CWJAP_DEF=\"MySSIDhere\",\"mypassword\"\r\n", 5000); // this too for initial setup...remove the \ if sending directly
// sendData("AT+CWAUTOCONN=1\r\n", 5000); // might need this too for initial setup
// sendData("AT+UART_DEF=115200,8,1,0,0\r\n", 5000); // maybe this too for initial setup. I needed 115200 to get iOS to load the webpage.
sendData("AT+CIPMUX=1\r\n",200); // configure for multiple connections
sendData("AT+CIPSERVER=1,80\r\n",500); // turn on server on port 80
digitalWrite(ledpin,HIGH);
}
void loop() {
OnTime = millis() / 1000; // In Seconds
if(CurrentInverterStatus == 1) PowerDownMillis = millis();
getInvStatus();
int AnalogInput0 = 0;
for (i=0;i<10;i=i+1) {
AnalogInput0 = AnalogInput0 + analogRead(A0);
delay(25);
}
AnalogInput0 = AnalogInput0 / 10;
int AnalogInput1 = analogRead(A1);
int AnalogInput2 = analogRead(A2);
int AnalogInput3 = analogRead(A3);
delay(1000);
PackVoltage = AnalogInput0 * .02087;
CellVoltage0 = PackVoltage - (AnalogInput1 * .0209);
CellVoltage1 = PackVoltage - CellVoltage0 - (AnalogInput2 * .0210);
CellVoltage3 = AnalogInput3 * .0210;
CellVoltage2 = (AnalogInput2 * .02085) - CellVoltage3;
MinMax();
if(bitRead(OnTime,2) == 0)
DisplayStatus();
if(bitRead(OnTime,2) == 1)
DisplayCells();
lcd.setCursor(0,1); lcd.print("Total "); lcd.print(PackVoltage);
lcd.setCursor(15,1);
if(UserDesiredInverterStatus == 1)lcd.print(".");
if(UserDesiredInverterStatus == 0)lcd.print(" ");
for (i=0;i<4;i=i+1) {myArray[i] = myArray[i+1];}
myArray[4] = PackVoltage;
if(PackVoltage > TurnOnVoltage && UserDesiredInverterStatus == 1 && lowloaddisc != 2 && CurrentInverterStatus == 0 && (PowerDownMillis + PUDelay) < millis()) PowerUp();
if((PackVoltage < ShutdownVoltage || LowestCellVoltage < ShutdownCellVoltage) && CurrentInverterStatus == 1) PowerDown();
if(lowloaddisc == 1 && myArray[0] != 0 && myArray[4] - 0.70 > myArray[0]) {lowloaddisc = 2; PowerDown();}
if (digitalRead(RemoteInputPin) == 1 && CurrentInverterStatus == 0 && RemoteEnable == 1) PowerUp();
if (digitalRead(RemoteInputPin) == 0 && CurrentInverterStatus == 1 && RemoteEnable == 1) PowerDown();
// SerStatus();
if(Serial.available())
{
if(Serial.find("+IPD,"))
{
delay(300);
connectionId = Serial.read()-48;
sendWebpage();
cipSend = "AT+CIPCLOSE=";
cipSend+=connectionId;
cipSend+="\r\n";
sendData(cipSend,300);
}
}
}
int DisplayStatus() {
lcd.setCursor(0,0); lcd.print(" ");
lcd.setCursor(0,0); lcd.print("LCM: ");lcd.print((PowerDownMillis - PowerUpMillis)/60000);
lcd.print(" ");
if(lowloaddisc == 2)lcd.print("LLD");
if(lowloaddisc != 2 && CurrentInverterStatus == 0 && UserDesiredInverterStatus == 1) lcd.print("LVD");
}
int DisplayCells() {
lcd.setCursor(0,0); lcd.print(" ");
lcd.setCursor(0,0); lcd.print(CellVoltage3,1);
lcd.print(" "); lcd.print(CellVoltage2,1);
lcd.print(" "); lcd.print(CellVoltage1,1);
lcd.print(" "); lcd.print(CellVoltage0,1);
}
int PowerDown() {
while(digitalRead(InverterStatusPin) == 1) {
// digitalWrite(ledpin,HIGH);
digitalWrite(InverterControlPin,HIGH);
delay(1000);
// digitalWrite(ledpin,LOW);
digitalWrite(InverterControlPin,LOW);
delay(3000);
}
for (i=0;i<5;i=i+1) {myArray[i] = 0;}
lcd.setCursor(12,1); lcd.print("OFF"); CurrentInverterStatus = 0;
PowerDownMillis = millis();
}
int PowerUp() {
while(digitalRead(InverterStatusPin) == 0) {
// digitalWrite(ledpin,HIGH);
digitalWrite(InverterControlPin,HIGH);
delay(1000);
// digitalWrite(ledpin,LOW);
digitalWrite(InverterControlPin,LOW);
delay(3000);
}
for (i=0;i<5;i=i+1) {myArray[i] = 0;}
lcd.setCursor(12,1); lcd.print(" ON"); CurrentInverterStatus = 1;
PowerUpMillis = millis();
}
int getInvStatus() {
if (digitalRead(InverterStatusPin) == 1) {
lcd.setCursor(12,1); lcd.print(" ON");
if (CurrentInverterStatus != 1) {
UserDesiredInverterStatus = 1;
if (lowloaddisc == 2) lowloaddisc = 1;
for (i=0;i<5;i=i+1) {myArray[i] = 0;}
PowerUpMillis = millis();
CurrentInverterStatus = 1;
}
}
else {
lcd.setCursor(12,1); lcd.print("OFF");
if (CurrentInverterStatus != 0) {
UserDesiredInverterStatus = 0;
for (i=0;i<5;i=i+1) {myArray[i] = 0;}
CurrentInverterStatus = 0;
}
}
}
int MinMax() {
float cellArray[4] = {CellVoltage3, CellVoltage2, CellVoltage1, CellVoltage0};
LowestCellVoltage = 10; //set to unreasonable values
HighestCellVoltage = 0; //ditto
for(i=0;i<4;i=i+1) {
LowestCellVoltage = min(LowestCellVoltage,cellArray[i]);
HighestCellVoltage = max(HighestCellVoltage,cellArray[i]);
}
}
void sendData(String command, const int timeout)
{
// String response = "";
Serial.print(command);
long int time = millis();
while( (time+timeout) > millis())
{
while(Serial.available())
{
char c = Serial.read(); // read the next character.
// response+=c;
}
}
}
void sendWebpage()
{
longstring[0] = '\0';
strcat_P(longstring, (char*)pgm_read_word(&(string_table[0])));
strcat_P(longstring, (char*)pgm_read_word(&(string_table[1])));
strcat_P(longstring, (char*)pgm_read_word(&(string_table[2])));
strcat_P(longstring, (char*)pgm_read_word(&(string_table[3])));
if(UserDesiredInverterStatus == 1){strcpy(str1,"On");}else{strcpy(str1,"Off");}strcat(longstring, str1);
strcat_P(longstring, (char*)pgm_read_word(&(string_table[4])));
if(CurrentInverterStatus == 1){strcpy(str1,"On");}else{strcpy(str1,"Off");}strcat(longstring,str1);
strcat_P(longstring, (char*)pgm_read_word(&(string_table[4])));
dtostrf(PackVoltage,5,2,str1);strcat(longstring,str1);
strcat_P(longstring, (char*)pgm_read_word(&(string_table[5])));
dtostrf(LowestCellVoltage,3,1,str1);strcat(longstring,str1);
strcat_P(longstring, (char*)pgm_read_word(&(string_table[6])));
if(CurrentInverterStatus == 0 && UserDesiredInverterStatus == 1 && lowloaddisc != 2){strcpy(str1,"Batt Dead ");}else{strcpy(str1,"Too Soon ");}
if(lowloaddisc == 2){strcpy(str1,"Bike Full ");}strcat(longstring,str1);
strcat_P(longstring, (char*)pgm_read_word(&(string_table[7])));
dtostrf((PowerDownMillis - PowerUpMillis)/60000,3,0,str1);strcat(longstring,str1);
strcat_P(longstring, (char*)pgm_read_word(&(string_table[8])));
int len = strlen(longstring);
String cipSend = "AT+CIPSEND=";
cipSend += connectionId;
cipSend += ",";
cipSend +=len;
cipSend +="\r\n";
sendData(cipSend,200); // was 100
dtostrf(len - 67,3,0,str1);
for(int i = 58;i<61;i++){longstring[i] = str1[i-58];}
for(int i = 0;i<len;i++){
Serial.print(longstring[i]);
}
}