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/*************************************************************************
* Sample sketch for Freematics OBD-II UART Adapter
* Reads and prints several OBD-II PIDs value and MEMS sensor data
* Distributed under GPL v2.0
* Visit http://freematics.com for more information
* (C)2012-2015 Stanley Huang <stanleyhuangyc@gmail.com>
*************************************************************************/
#include <Arduino.h>
#include <Wire.h>
#include <SoftwareSerial.h>
#include <OBD.h>
SoftwareSerial mySerial(A2, A3);
COBD obd;
void testOut()
{
static const char PROGMEM cmds[][6] = {"ATZ\r", "ATL1\r", "ATH0\r", "ATRV\r", "0100\r", "010C\r", "0902\r"};
char buf[OBD_RECV_BUF_SIZE];
for (byte i = 0; i < sizeof(cmds) / sizeof(cmds[0]); i++) {
char cmd[6];
memcpy_P(cmd, cmds[i], sizeof(cmd));
mySerial.print("Sending ");
mySerial.println(cmd);
if (obd.sendCommand(cmd, buf)) {
char *p = strstr(buf, cmd);
if (p)
p += strlen(cmd);
else
p = buf;
while (*p == '\r') p++;
while (*p) {
mySerial.write(*p);
if (*p == '\r' && *(p + 1) != '\r')
mySerial.write('\n');
p++;
}
} else {
mySerial.println("Timeout");
}
delay(1000);
}
mySerial.println();
}
void readPID()
{
static const byte PROGMEM pidlist[] = {PID_ENGINE_LOAD, PID_COOLANT_TEMP, PID_RPM, PID_SPEED, PID_TIMING_ADVANCE, PID_INTAKE_TEMP, PID_THROTTLE, PID_FUEL_LEVEL};
for (byte i = 0; i < sizeof(pidlist) / sizeof(pidlist[0]); i++) {
byte pid = pgm_read_byte(pidlist + i);
bool valid = obd.isValidPID(pid);
mySerial.print('0');
mySerial.print((int)pid | 0x100, HEX);
mySerial.print('=');
if (valid) {
int value;
if (obd.read(pid, value)) {
byte n = mySerial.println(value);
}
} else {
mySerial.println('X');
}
}
}
void setup() {
delay(500);
mySerial.begin(9600);
obd.begin();
do {
testOut();
mySerial.println("Init...");
} while (!obd.init());
char buf[OBD_RECV_BUF_SIZE];
if (obd.getVIN(buf)) {
mySerial.print("VIN:");
mySerial.println(buf);
}
delay(1000);
}
void loop() {
readPID();
delay(500);
}
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