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/*************************************************************************
* Sample sketch based on OBD-II library for Arduino
* Using a OLED module to display realtime vehicle data
* Distributed under GPL v2.0
* Copyright (c) 2013 Stanley Huang <stanleyhuangyc@gmail.com>
* All rights reserved.
*************************************************************************/
#include <Arduino.h>
#include <Wire.h>
#include "OBD.h"
#include "ZtLib.h"
#define OLED_ADDRESS 0x27
#define LOOP_COUNT 50
const char PROGMEM font16x32[][32] = {
{0x00,0xE0,0xF8,0xFC,0xFE,0x1E,0x07,0x07,0x07,0x07,0x1E,0xFE,0xFC,0xF8,0xF0,0x00,0x00,0x07,0x0F,0x3F,0x3F,0x7C,0x70,0x70,0x70,0x70,0x7C,0x3F,0x1F,0x1F,0x07,0x00},/*0*/
{0x00,0x00,0x00,0x06,0x07,0x07,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0x7F,0x7F,0x7F,0x00,0x00,0x00,0x00,0x00,0x00},/*1*/
{0x00,0x38,0x3C,0x3E,0x3E,0x0F,0x07,0x07,0x07,0xCF,0xFF,0xFE,0xFE,0x38,0x00,0x00,0x00,0x40,0x40,0x60,0x70,0x78,0x7C,0x7E,0x7F,0x77,0x73,0x71,0x70,0x70,0x00,0x00},/*2*/
{0x00,0x18,0x1C,0x1E,0x1E,0x0F,0xC7,0xC7,0xE7,0xFF,0xFE,0xBE,0x9C,0x00,0x00,0x00,0x00,0x0C,0x1C,0x3C,0x3C,0x78,0x70,0x70,0x70,0x79,0x7F,0x3F,0x1F,0x0F,0x00,0x00},/*3*/
{0x00,0x00,0x80,0xC0,0xE0,0x70,0x38,0x1C,0x1E,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x06,0x07,0x07,0x07,0x06,0x06,0x06,0x06,0x06,0x7F,0x7F,0x7F,0x7F,0x06,0x06,0x00},/*4*/
{0x00,0x00,0x00,0x00,0xF0,0xFF,0xFF,0xFF,0xE7,0xE7,0xE7,0xE7,0xC7,0x87,0x00,0x00,0x00,0x00,0x38,0x78,0x71,0x70,0x70,0x70,0x70,0x70,0x39,0x3F,0x3F,0x1F,0x0F,0x00},/*5*/
{0x00,0x80,0xE0,0xF0,0xF8,0xFC,0x7F,0x7F,0x6F,0x67,0xE1,0xE1,0xC0,0x80,0x00,0x00,0x00,0x0F,0x1F,0x3F,0x3F,0x78,0x70,0x70,0x70,0x70,0x78,0x3F,0x3F,0x1F,0x0F,0x00},/*6*/
{0x00,0x07,0x07,0x07,0x07,0x07,0xC7,0xE7,0xF7,0xFF,0x7F,0x3F,0x1F,0x07,0x03,0x01,0x00,0x20,0x38,0x7C,0x7E,0x3F,0x0F,0x07,0x03,0x00,0x00,0x00,0x00,0x00,0x00,0x00},/*7*/
{0x00,0x00,0x00,0x1C,0xBE,0xFE,0xFF,0xE7,0xC3,0xC3,0xE7,0xFF,0xFE,0xBE,0x1C,0x00,0x00,0x00,0x0E,0x3F,0x3F,0x7F,0x71,0x60,0x60,0x60,0x71,0x7F,0x3F,0x3F,0x0F,0x00},/*8*/
{0x00,0x78,0xFC,0xFE,0xFE,0x8F,0x07,0x07,0x07,0x07,0x8F,0xFE,0xFE,0xFC,0xF8,0x00,0x00,0x00,0x00,0x01,0x43,0x43,0x73,0x7B,0x7F,0x7F,0x1F,0x0F,0x07,0x03,0x00,0x00},/*9*/
};
class COBDDash : public COBD
{
public:
void Connect()
{
char buf[16];
InitScreen();
for (int n = 1; !Init(); n++) {
sprintf(buf, "Connecting [%d]", n);
if (n <= 20)
DisplayString(buf);
else if (n == 21)
ClearScreen(); // blank screen after a while
}
DisplayString("Connected! ");
int value;
DisplayString("Wait ECU start", 0 , 2);
do {
delay(500);
} while (!ReadSensor(PID_RPM, value));
DisplayString("ECU started ", 0 , 4);
delay(500);
DisplayString("Wait ignition ", 0 , 6);
delay(500);
do {
delay(500);
} while (!ReadSensor(PID_RPM, value) || value == 0);
DisplayString("Engine started!", 0 , 6);
delay(1000);
}
void Loop()
{
int value;
byte count = 0;
ClearScreen();
DisplayString("rpm", 84, 0);
DisplayString("km/h", 84, 3);
for (;;) {
char buf[16];
if (count == 0) {
DisplayString("AIR: ", 0, 6);
if (ReadSensor(PID_INTAKE_TEMP, value)) {
sprintf(buf, "%4dC", value);
DisplayString(buf, 11 * 8, 6);
}
} else if (count == LOOP_COUNT / 2) {
DisplayString("ENGINE: ", 0, 6);
if (ReadSensor(PID_COOLANT_TEMP, value)) {
sprintf(buf, "%4dC", value);
DisplayString(buf, 11 * 8, 6);
}
}
if (count < LOOP_COUNT / 2) {
if (ReadSensor(PID_INTAKE_PRESSURE, value)) {
sprintf(buf, "%dkPa ", value);
DisplayString(buf, 5 * 8, 6);
}
} else {
if (ReadSensor(PID_ENGINE_LOAD, value)) {
sprintf(buf, "%d%% ", value);
DisplayString(buf, 8 * 8, 6);
}
}
if (ReadSensor(PID_RPM, value)) {
sprintf(buf, "%4d", value);
DisplayLargeNumber(buf, 16, 0);
}
if (ReadSensor(PID_SPEED, value)) {
sprintf(buf, "%3d", value);
DisplayLargeNumber(buf, 32, 3);
}
if (errors > 5) {
return;
}
count = (count + 1) % LOOP_COUNT;
}
}
private:
void DisplayString(const char* s, char x = 0, char y = 0)
{
ZT.ScI2cMxDisplay8x16Str(OLED_ADDRESS, y, x, s);
}
void DisplayLargeNumber(const char* s, char x = 0, char y = 0)
{
char data[32];
while (*s) {
if (*s >= '0' && *s <= '9') {
memcpy_P(data, font16x32[*s - '0'], 32);
ZT.ScI2cMxDisplayDot16x16(OLED_ADDRESS, y , x, data);
} else {
ZT.ScI2cMxFillArea(OLED_ADDRESS, y, y + 1, x, x + 16, 0);
}
x += 16;
s++;
}
}
void ClearScreen()
{
ZT.ScI2cMxFillArea(OLED_ADDRESS, 0, 7, 0, 127, 0);
delay(10);
}
void InitScreen()
{
ZT.I2cInit();
ZT.ScI2cMxReset(OLED_ADDRESS);
delay(10);
ClearScreen();
}
};
COBDDash dash;
void loop()
{
dash.Connect();
dash.Loop();
}
void setup()
{
OBDUART.begin(OBD_SERIAL_BAUDRATE);
}
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