Vehicle Communicator rev_02

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    - Project: Vehicle Communicator
    - Source Code NOT compiled for: Arduino Mega
    - Source Code created on: 2025-07-11 20:41:48

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* send translate data over bluetooth */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <SoftwareSerial.h>

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
float T_interpolate(byte DS_Temp); // Prototype added

/***** DEFINITION OF Software Serial *****/
const uint8_t hc05_HC05_mySerial_PIN_SERIAL_TX_A0 = A0;
const uint8_t hc05_HC05_mySerial_PIN_SERIAL_RX_A1 = A1;
SoftwareSerial hc05_HC05_mySerial(hc05_HC05_mySerial_PIN_SERIAL_RX_A1, hc05_HC05_mySerial_PIN_SERIAL_TX_A0);

// ***** Variable declariations
const byte ALDLTestPin = 4; // Input used to listen for 160 BAUD ALDL activity before commanding 8192 BAUD
const byte DecodeDataOutputPin = 5; // Setting this input pin LOW will put decoded data out on the serial port
const byte HexDataOutputPin = 6; // Setting this input LOW will output hex data on the serial port
int ALDLbyte = 0; // One byte of aldl data
int bytecounter = 0; // count bytes for line spacing in output
const int linecount = 64; // 32 bytes per line
byte M1Cmd[4] = {0x80, 0x56, 0x01, 0x29}; // Mode 1 command to start 8192 Mode 1 DataStream (80 56 01 29 HEX)
byte Preamble[3] = {0x80, 0x95, 0x01}; // Preamble from ECM indicates start of 8192 Mode 1 DataStream (80 95 01 HEX)
bool PreambleFound = false; // Reset preamble found flag
bool SilenceFound = false; // Flag to indicate that ECM silence in 160 baud mode has been found
bool CommInit8192 = false; // Flag indicates that 8192 baud communications has been initialized
const double SilenceWait = 15000; // Minimum silence period before transmitting a Mode 1 command
unsigned long PreambleTimer; // Timeout timer for preamble
const int ByteCount = 64; // Number of data bytes following preamble in data stream including checksum
byte DataBytes[ByteCount]; // Array to hold the serial data stream
int DataStreamIndex = 1; // Data stream byte Index, start at 1 and end at 63 to match Assembly listing
int i = 0; // Preamble index counter
unsigned long StartTime; // Microsecond counter for measuring the time of incoming data
unsigned int CheckTotal; // Total of bytes received for calculating the checksum
byte CheckSum; // Actual calculated Checksum

// Variables specifically for the decoded data stream
float RPM; // Engine RPM
float TPS; // Percent TPS
float MAF; // Mass Air Flow gm/sec
float InjPW; // Injector Pulse Width
float O2mv; // O2 sensor MV
int BLCELL; // Currently used block learn cell #. There are 16 cells organized by RPM and air flow 0, is idle, 15 is max RPM & Airflow
int BLM; // Block Learn Value for cell being currently used
int INTEGRATOR; // Current fueling control integrator value over 128 indicates fuel is added, under 128 fuel is taken out, 160 max
float MAT; // Intake Manifold Air Temperature
unsigned int Runtime; // Engine Run time

// ***** Hardware configuration
//HardwareSerial Serial1(2); // Define uart2 as Serial1 - **** USED ONLY ON ESP32 *****

void setup()
{
  // **** I/O configuration and setup first
  pinMode(ALDLTestPin, INPUT); // define D4 as an input pin to listen for the 160 baud input data
  pinMode(HexDataOutputPin, INPUT_PULLUP); // User convenience pin. Grounding this pin will send Decoded Data to the Serial Port
  pinMode(HexDataOutputPin, INPUT_PULLUP); // User convenience pin. Grounding this pin will send HEX Data to the Serial Port
  // **** Now, start the serial functions
  Serial.begin(115200); // Open serial monitoring port
  Serial1.begin(8192); // Test the capability of esp 8222 to run at 8192 baud directly
  delay(1500); // delay for diagnostic print
  Serial.println("Ready for data capture");
  // Initialize Bluetooth serial
  hc05_HC05_mySerial.begin(9600);
  // Initialize the variables, flags, etc
  i = 0; // Reset the preamble index flag
}

void loop() {
  // Existing data capture and decoding code...
  // After processing data, send translated data over Bluetooth
  // For demonstration, send a simple message periodically or when new data is received
  static unsigned long lastSendTime = 0;
  unsigned long currentTime = millis();

  // Example: send data every 5 seconds
  if (currentTime - lastSendTime >= 5000) {
    lastSendTime = currentTime;
    // Compose a message to send
    String message = "Engine RPM: ";
    message += String(RPM);
    message += " | TPS: ";
    message += String(TPS);
    message += " | MAF: ";
    message += String(MAF);
    // Send over Bluetooth
    hc05_HC05_mySerial.println(message);
  }

  // Rest of your existing loop code...
  // (Include your data decoding and processing code here)
}

/* END CODE */