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display.cpp
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display.cpp
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#include <Arduino.h>
// 128x64
#include "U8glib.h"
#include "display.h"
// SPI Com:
// SCK = en = 2
// MOSI = rw = 3
// CS = di = 4
U8GLIB_ST7920_128X64_4X u8g(PIN_SCK, PIN_MOSI, PIN_CS);
#include "display.h"
uint8_t pag_select = 1; // lcd page
void disaply_page_1()
{
char tmp_string[8] = {0};
u8g.setFont(u8g_font_fixed_v0);
// u8g.setFontRefHeightExtendedText();
// u8g.setDefaultForegroundColor();
u8g.setFontPosTop();
u8g.drawBox(0, 0, 90, 9);
u8g.setColorIndex(0);
u8g.drawStr(1, 0, "Main Display");
u8g.setColorIndex(1);
u8g.drawBox(0, 10, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(1, 10, "TKPH");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", vsstop);
u8g.drawStr(27, 10, tmp_string);
// u8g.drawStr(50, 10, "0");
u8g.drawBox(0, 20, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(1, 20, "AKPH");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", vssavg);
u8g.drawStr(27, 20, tmp_string);
u8g.drawFrame(46, 10, 44, 19);
u8g.setScale2x2();
sprintf(tmp_string, "%03d", ect);
u8g.drawStr(24, 5, tmp_string);
u8g.undoScale();
u8g.drawStr(83, 9, "o");
// u8g.drawStr(83, 19, "+");
u8g.drawFrame(1, 30, 89, 34);
u8g.setFont(u8g_font_DS_Digital_V1);
u8g.setFontPosTop();
sprintf(tmp_string, "%03d", vss);
u8g.drawStr(10, 35, tmp_string);
u8g.setFont(u8g_font_fixed_v0);
u8g.setFontPosTop();
u8g.drawStr(62, 50, "KPH");
u8g.drawLine(92, 0, 92, 63);
u8g.drawBox(94, 0, 33, 9);
u8g.setColorIndex(0);
u8g.drawStr(99, 0, "VOLT");
u8g.setColorIndex(1);
// dtostrf(volt2, 2, 1, tmp_string);
dtostrf(volt, 2, 1, tmp_string);
// sprintf(tmp_string, "%04d", volt);
u8g.drawStr(99, 11, tmp_string);
u8g.drawBox(94, 21, 33, 9);
u8g.setColorIndex(0);
u8g.drawStr(102, 21, "RPM");
u8g.setColorIndex(1);
sprintf(tmp_string, "%04d", rpm);
u8g.drawStr(99, 32, tmp_string);
u8g.drawBox(94, 42, 33, 9);
u8g.setColorIndex(0);
u8g.drawStr(99, 42, "TRIP");
u8g.setColorIndex(1);
sprintf(tmp_string, "%05d", trip_distance);
// dtostrf(trip_distance / 1000, 2, 1, tmp_string);
u8g.drawStr(96, 53, tmp_string);
// u8g.drawStr(116, 53, "98");
}
void disaply_page_2()
{
char tmp_string[8] = {0};
u8g.setFont(u8g_font_fixed_v0);
// u8g.setFontRefHeightExtendedText();
// u8g.setDefaultForegroundColor();
u8g.setFontPosTop();
u8g.drawBox(0, 0, 127, 9);
u8g.setColorIndex(0);
u8g.drawStr(1, 0, "Display Page 2");
u8g.setColorIndex(1);
u8g.drawFrame(0, 10, 127, 53);
// col 1
u8g.drawBox(4, 12, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 12, "RPM");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", rpm);
u8g.drawStr(32, 12, tmp_string);
u8g.drawBox(4, 22, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 22, "VSS");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", vss);
u8g.drawStr(32, 22, tmp_string);
u8g.drawBox(4, 32, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 32, "MAP");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", maps);
u8g.drawStr(32, 32, tmp_string);
u8g.drawBox(4, 42, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 42, "IAT");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", iat);
u8g.drawStr(32, 42, tmp_string);
u8g.drawBox(4, 52, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 52, "ECT");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", ect);
u8g.drawStr(32, 52, tmp_string);
// box: x,y,w,h
// str: x,y
// col 2
u8g.drawBox(70, 12, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 12, "TPS");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", tps);
u8g.drawStr(98, 12, tmp_string);
u8g.drawBox(70, 22, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 22, "IACV");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", iacv);
u8g.drawStr(98, 22, tmp_string);
u8g.drawBox(70, 32, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 32, "SFT");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", sft);
u8g.drawStr(98, 32, tmp_string);
u8g.drawBox(70, 42, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 42, "LFT");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", lft);
u8g.drawStr(98, 42, tmp_string);
u8g.drawBox(70, 52, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 52, "BARO");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", baro);
u8g.drawStr(98, 52, tmp_string);
}
void disaply_page_3()
{
char tmp_string[8] = {0};
u8g.setFont(u8g_font_fixed_v0);
// u8g.setFontRefHeightExtendedText();
// u8g.setDefaultForegroundColor();
u8g.setFontPosTop();
u8g.drawBox(0, 0, 127, 9);
u8g.setColorIndex(0);
u8g.drawStr(1, 0, "Display Page 3");
u8g.setColorIndex(1);
u8g.drawFrame(0, 10, 127, 53);
// col 1
u8g.drawBox(4, 12, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 12, "O2");
u8g.setColorIndex(1);
dtostrf(o2, 2, 1, tmp_string);
u8g.drawStr(32, 12, tmp_string);
u8g.drawBox(4, 22, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 22, "VOLT");
u8g.setColorIndex(1);
dtostrf(volt, 2, 1, tmp_string);
u8g.drawStr(32, 22, tmp_string);
u8g.drawBox(4, 32, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 32, "LMT");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", lmt);
u8g.drawStr(32, 32, tmp_string);
u8g.drawBox(4, 42, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 42, "IGN");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", ign);
u8g.drawStr(32, 42, tmp_string);
u8g.drawBox(4, 52, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 52, "INJ");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", inj);
u8g.drawStr(32, 52, tmp_string);
// box: x,y,w,h
// str: x,y
// col 2
u8g.drawBox(70, 12, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 12, "AC");
u8g.setColorIndex(1);
sprintf(tmp_string, "%01d", sw_aircon);
u8g.drawStr(98, 12, tmp_string);
u8g.drawBox(70, 22, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 22, "BRK");
u8g.setColorIndex(1);
sprintf(tmp_string, "%01d", sw_brake);
u8g.drawStr(98, 22, tmp_string);
u8g.drawBox(70, 32, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 32, "VTS");
u8g.setColorIndex(1);
sprintf(tmp_string, "%01d", sw_vtec);
u8g.drawStr(98, 32, tmp_string);
u8g.drawBox(70, 42, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 42, "KNOC");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", knoc);
u8g.drawStr(98, 42, tmp_string);
// u8g.drawBox(70, 52, 25, 9);
// u8g.setColorIndex(0);
// u8g.drawStr(71, 52, "DCE");
// u8g.setColorIndex(1);
// sprintf(tmp_string, "%03d", dlcChecksumError);
// u8g.drawStr(98, 52, tmp_string);
}
void disaply_page_4()
{
char tmp_string[8] = {0};
u8g.setFont(u8g_font_fixed_v0);
// u8g.setFontRefHeightExtendedText();
// u8g.setDefaultForegroundColor();
u8g.setFontPosTop();
u8g.drawBox(0, 0, 127, 9);
u8g.setColorIndex(0);
u8g.drawStr(1, 0, "Display Page 4");
u8g.setColorIndex(1);
u8g.drawFrame(0, 10, 127, 53);
// col 1
u8g.drawBox(4, 12, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 12, "VOLT2");
u8g.setColorIndex(1);
dtostrf(volt2, 2, 1, tmp_string);
u8g.drawStr(32, 12, tmp_string);
u8g.drawBox(4, 22, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 22, "AFR");
u8g.setColorIndex(1);
dtostrf(afr, 2, 1, tmp_string);
u8g.drawStr(32, 22, tmp_string);
u8g.drawBox(4, 32, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 32, "FP");
u8g.setColorIndex(1);
dtostrf(fp, 2, 1, tmp_string);
u8g.drawStr(32, 32, tmp_string);
u8g.drawBox(4, 42, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(5, 42, "TH");
u8g.setColorIndex(1);
dtostrf(th, 2, 1, tmp_string);
u8g.drawStr(32, 42, tmp_string);
// u8g.drawBox(4, 52, 25, 9);
// u8g.setColorIndex(0);
// u8g.drawStr(5, 52, "ECT");
// u8g.setColorIndex(1);
// sprintf(tmp_string, "%03d", ect);
// u8g.drawStr(32, 52, tmp_string);
// box: x,y,w,h
// str: x,y
// col 2
u8g.drawBox(70, 12, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 12, "OBD");
u8g.setColorIndex(1);
sprintf(tmp_string, "%01d", obd_select);
u8g.drawStr(98, 12, tmp_string);
u8g.drawBox(70, 22, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 22, "DOOR");
u8g.setColorIndex(1);
sprintf(tmp_string, "%04d", 0);
u8g.drawStr(98, 22, tmp_string);
u8g.drawBox(70, 32, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 32, "SRN");
u8g.setColorIndex(1);
sprintf(tmp_string, "%01d", 0);
u8g.drawStr(98, 32, tmp_string);
u8g.drawBox(70, 42, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 42, "DTO");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", dlcTimeout);
u8g.drawStr(98, 42, tmp_string);
u8g.drawBox(70, 52, 25, 9);
u8g.setColorIndex(0);
u8g.drawStr(71, 52, "DCE");
u8g.setColorIndex(1);
sprintf(tmp_string, "%03d", dlcChecksumError);
u8g.drawStr(98, 52, tmp_string);
}
void displaySetup()
{
}
void displayLoop()
{
static unsigned long msTick = millis();
if (millis() - msTick >= 250)
{ // refresh rate 250 ms
msTick = millis();
readEcuData();
volt2 = readVoltage();
afr = readAirFuelRatio();
th = readThermistor();
fp = readFuelPressure();
// register top values
if (rpm > rpmtop)
rpmtop = rpm;
if (vss > vsstop)
vsstop = vss;
if (ect > ecttop)
ecttop = ect;
if (iat > iattop)
iattop = iat;
if (volt > volttop)
volttop = volt;
if (maps > mapstop)
mapstop = maps;
// trip computer essentials
if (rpm > 0)
{
if (vss > 0)
{ // running time
trip_run_time++;
trip_vss_sum += vss;
vssavg = (trip_vss_sum / trip_run_time);
float f;
// f = vssavg;
// f = ((f * 1000) / 14400) * running_time; // @ 250ms
// distance = round(f);
// formula: distance = speed * fps / 3600
// where: distance = kilometer(s), speed = km/h, fps in second(s)
f = vss;
f = f * 0.25 / 3600; // @ 250ms / km
f = f * 1000; // km to meters
trip_distance = trip_distance + round(f);
// time = distance / speed
}
else
{ // idle time
trip_idle_time++;
}
}
if (ect > ect_alarm) // engine temp alarm
digitalWrite(PIN_BUZZER, HIGH);
else if (vss > 100 && vss < 105) // car speed alarm/notification
digitalWrite(PIN_BUZZER, HIGH);
else
digitalWrite(PIN_BUZZER, LOW);
// aircon controller (replace the OEM one)
/*
if (th <= th_threshold)
{
digitalWrite(PIN_AC, LOW);
cp = 0;
}
else if (th >= (th_threshold + 10))
{
digitalWrite(PIN_AC, HIGH);
cp = 1;
}
*/
// IMAP = RPM * MAP / IAT / 2
// MAF = (IMAP/60)*(VE/100)*(Eng Disp)*(MMA)/(R)
// Where: VE = 80% (Volumetric Efficiency), R = 8.314 J/°K/mole, MMA = 28.97 g/mole (Molecular mass of air)
// int imap = rpm * maps / (iat + 273) / 2;
// ve = 75, ed = 1.595, afr = 14.7
// maf = (imap / 60) * (80 / 100) * 1.595 * 28.9644 / 8.314472;
// (gallons of fuel) = (grams of air) / (air/fuel ratio) / 6.17 / 454
// gof = maf / afr / 6.17 / 454;
// gear = vss / (rpm + 1) * 150 + 0.3;
// render display
u8g.firstPage();
do
{
if (pag_select == 1)
disaply_page_1();
else if (pag_select == 2)
disaply_page_2();
else if (pag_select == 3)
disaply_page_3();
else if (pag_select == 4)
disaply_page_4();
} while (u8g.nextPage());
}
}