mirror of
https://github.com/stevenhowes/MX5-Arduino-Speed.git
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Code
This commit is contained in:
Steve Howes
@@ -1 +1,28 @@
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# MX5-Arduino-Speed
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Target Hardware:
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Arduino ATMega328p
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2.42 Inch SS1309 128x64 Monocrhome OLED
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5v Beeper
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5v Speed sensor (#DSSA from www.carbuildersolutions.com)
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Pinout:
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OLED_MOSI 9
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OLED_CLK 10
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OLED_DC 11
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OLED_CS 12
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OLED_RESET 13
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Beeper 2 (and to GND)
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Speed sesor 4 (and 5v, GND)
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Configuration via USB, 115200. Commands are:
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ODO - Press return and then enter new odometer reading
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PPM - Press return and enter pulses per half mile (use CAL mode in preference)
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CAL - Enter calibration mode (see below)
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RUN - Exit calibration mode
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Calibration mode:
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In calibration mode it starts counting pulses immediately. Calibration should be done over a measured half a mile. Press enter when starting the half mile, and again at the end. The number of pulses will be displayed on the screen. To write this to EEPROM and return to normal mode type 'RUN'. If the data is not suitable (missed marker etc) then just repeat the measurement.
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@@ -0,0 +1,363 @@
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#include <Adafruit_SSD1306.h>
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#include <EEPROM.h>
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#include <math.h>
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//Define SPI Connections:
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#define OLED_MOSI 9
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#define OLED_CLK 10
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#define OLED_DC 11
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#define OLED_CS 12
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#define OLED_RESET 13
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#define LOGO_HEIGHT 64
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#define LOGO_WIDTH 64
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const unsigned char PROGMEM logo_bmp [] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xF0, 0x0F, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x03, 0xF0, 0x0F, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x37, 0xE0, 0x07, 0xE8, 0x00, 0x00,
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0x00, 0x00, 0xF7, 0xC0, 0x07, 0xEE, 0x00, 0x00, 0x00, 0x01, 0xEF, 0x80, 0x03, 0xEF, 0x80, 0x00,
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0x00, 0x03, 0xEF, 0x00, 0x01, 0xF7, 0xC0, 0x00, 0x00, 0x07, 0xCF, 0xC0, 0x03, 0xF7, 0xC0, 0x00,
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0x00, 0x07, 0xC7, 0xF8, 0x1F, 0xE3, 0xE0, 0x00, 0x00, 0x17, 0x87, 0xFE, 0x7F, 0xE3, 0xEC, 0x00,
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0x00, 0x37, 0x83, 0xFE, 0x7F, 0xC1, 0xEC, 0x00, 0x00, 0x77, 0xF9, 0xF0, 0x1F, 0xBF, 0xEC, 0x00,
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0x00, 0xF7, 0xFE, 0x00, 0x00, 0xFF, 0xCE, 0x00, 0x00, 0xF3, 0xFE, 0x00, 0x00, 0x7F, 0xCF, 0x00,
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0x00, 0xF1, 0xF8, 0x00, 0x00, 0x3F, 0x0F, 0x00, 0x00, 0xF0, 0xC0, 0x00, 0x00, 0x02, 0x07, 0x00,
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0x03, 0xFF, 0xC0, 0x00, 0x00, 0x03, 0xFF, 0xC0, 0x07, 0xFF, 0xC0, 0x00, 0x00, 0x03, 0xFE, 0xC0,
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0x07, 0xFF, 0x80, 0x00, 0x00, 0x01, 0xFE, 0xE0, 0x0F, 0x3F, 0x00, 0x00, 0x00, 0x00, 0xFC, 0xE0,
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0x0F, 0x1C, 0x00, 0x00, 0x00, 0x00, 0x39, 0xF0, 0x0F, 0x1C, 0x00, 0x00, 0x00, 0x00, 0x39, 0xF0,
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0x0F, 0x7C, 0x00, 0x00, 0x00, 0x00, 0x3D, 0xF0, 0x0F, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x3F, 0xF0,
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0x0F, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xE0, 0x07, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x1F, 0xE0,
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0x03, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x07, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x7F, 0xFF, 0xCE, 0xF3, 0xBC, 0x7D, 0xFD, 0xC7, 0x7F, 0xDF, 0xDE, 0xE3, 0xBE, 0xFB, 0xFF, 0xC7,
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0x7F, 0xFB, 0xDE, 0xE3, 0xFF, 0xFB, 0xFF, 0xCF, 0x1E, 0x3B, 0xDD, 0xE7, 0xFF, 0xFB, 0x9F, 0xFF,
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0x1E, 0x3F, 0xDD, 0xE7, 0xFF, 0xFB, 0xFF, 0xFE, 0x1C, 0x3F, 0xBD, 0xC7, 0xFF, 0xF7, 0xFF, 0xFE,
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0x1C, 0x7F, 0x3D, 0xC7, 0xFF, 0xF7, 0xF7, 0x9E, 0x3C, 0x77, 0x39, 0xCF, 0xEF, 0xF7, 0x07, 0x1E,
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0x3C, 0x77, 0xB9, 0xFE, 0xEF, 0xEF, 0x07, 0x1C, 0x38, 0x77, 0xF9, 0xFE, 0xEE, 0xEF, 0x07, 0x1C,
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0x38, 0x73, 0xF8, 0x78, 0xEE, 0xEE, 0x0F, 0x1C, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x1C, 0x00,
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0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x1C, 0x00, 0x00, 0x38, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x00,
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0x10, 0x38, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x18, 0x1C, 0x38, 0x00, 0x00, 0x00, 0x00, 0x3C, 0x78,
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0x1F, 0x38, 0x00, 0x00, 0x00, 0x00, 0x3D, 0xF8, 0x1F, 0xBA, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xF0,
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0x0F, 0xFB, 0x00, 0x00, 0x00, 0x01, 0xDF, 0xF0, 0x0F, 0xF3, 0x80, 0x00, 0x00, 0x03, 0xCF, 0xE0,
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0x03, 0xE3, 0xC0, 0x00, 0x00, 0x03, 0xC7, 0xC0, 0x00, 0x03, 0xC0, 0x00, 0x00, 0x03, 0xC0, 0x00,
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0x00, 0xE3, 0xD8, 0x00, 0x00, 0x1B, 0xC7, 0x00, 0x00, 0xFB, 0xDE, 0x00, 0x00, 0x7B, 0xDF, 0x00,
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0x00, 0xFF, 0xDF, 0x00, 0x00, 0xF3, 0xFE, 0x00, 0x00, 0x7F, 0x8F, 0x70, 0x0F, 0xF3, 0xFC, 0x00,
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0x00, 0x3F, 0x8F, 0xFC, 0x7F, 0xF1, 0xFC, 0x00, 0x00, 0x1F, 0x0F, 0xBE, 0xFD, 0xF0, 0xFC, 0x00,
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0x00, 0x00, 0x0F, 0xBF, 0xF9, 0xE0, 0x00, 0x00, 0x00, 0x03, 0xFF, 0x9F, 0xF9, 0xFF, 0xC0, 0x00,
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0x00, 0x03, 0xFF, 0x0F, 0xF1, 0xFF, 0xC0, 0x00, 0x00, 0x01, 0xFF, 0x07, 0xE0, 0xFF, 0x80, 0x00,
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0x00, 0x00, 0xFE, 0xFF, 0xFF, 0x7E, 0x00, 0x00, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0xC0, 0x00, 0x00,
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0x00, 0x00, 0x03, 0xFE, 0x7F, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x3F, 0x00, 0x00, 0x00
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};
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Adafruit_SSD1306 display(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
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// Boot graphics and screen refresh
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int prettylinecount = 64;
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byte screenrefresh = 0;
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byte mode = 0; //(0 = bootlogo, 1 = running, 2 = calibrate)
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// Pulse counting / pin state
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unsigned long pulsecount = 0;
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byte lastspeedstate = 0;
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bytespeedstate = 0;
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// Odometer and current mile pulses
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unsigned long odometer = 0;
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unsigned long currentmile = 0;
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// Calibration settings
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unsigned long pulsepermile = 0;
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byte calmultiplier = 2;
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void bootlogo(void)
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{
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display.clearDisplay();
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display.drawBitmap((display.width() - LOGO_WIDTH ) / 2, (display.height() - LOGO_HEIGHT) / 2, logo_bmp, LOGO_WIDTH, LOGO_HEIGHT, 1);
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display.display();
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delay(1000);
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}
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void prettyline()
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{
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display.clearDisplay();
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display.drawLine(prettylinecount, 45, 128 - prettylinecount, 45, WHITE);
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display.display();
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prettylinecount--;
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prettylinecount--;
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}
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void setup()
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{
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Serial.begin(115200);
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Serial.setTimeout(10);
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Serial.println();
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Serial.println();
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Serial.println("---- stevehowes/MX5-Arduino-Speed ----");
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display.begin(SSD1306_SWITCHCAPVCC, 0x3C); //Initialize with the I2C address 0x3C.
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// Beeper
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pinMode(2, OUTPUT);
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// Speed Input
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pinMode(4, INPUT);
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// Do wanky Triumph Logo
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bootlogo();
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// POST beep
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digitalWrite(2, HIGH);
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delay(50);
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digitalWrite(2, LOW);
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// Get calibrated data and odometer from EEPROM
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EEPROM.get(0, pulsepermile);
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EEPROM.get(4, odometer);
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// Output debug data
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Serial.print("PPM Calibration: ");
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Serial.println(pulsepermile);
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Serial.print("Start Odometer: ");
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Serial.println(odometer);
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Serial.print("Calibration multiplier: ");
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Serial.print(calmultiplier);
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Serial.print(" (");
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Serial.print(1.0/calmultiplier);
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Serial.println(" miles)");
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}
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void loop()
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{
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if (mode == 0) // Boot mode
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{
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// Boot styling, when it expires default to run
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if (prettylinecount > 0)
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{
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prettyline();
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return;
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} else {
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mode = 1;
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}
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}
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else if (mode == 1) // Run mode
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{
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// If we have serial
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if (Serial.available() > 0)
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{
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String input = Serial.readString();
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// See if it's a cal request
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if (input == "CAL\n")
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{
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// Change to calibrate mode
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mode = 2;
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// Notify user
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Serial.println("---- Calibration Mode ----");
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digitalWrite(2, HIGH);
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delay(500);
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digitalWrite(2, LOW);
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// Draw the calibration screen
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screenrefresh = 1;
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}
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else if (input == "PPM\n")
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{
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// Notify user
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Serial.print("Enter PPM: ");
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digitalWrite(2, HIGH);
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delay(50);
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digitalWrite(2, LOW);
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while (Serial.available() <= 0)
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{}
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pulsepermile = Serial.parseInt();
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Serial.println(pulsepermile);
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EEPROM.put(0, pulsepermile);
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Serial.print(pulsepermile);
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Serial.println(" written to EEPROM at address 0");
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}
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else if (input == "ODO\n")
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{
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// Notify user
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Serial.print("Enter ODO: ");
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digitalWrite(2, HIGH);
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delay(50);
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digitalWrite(2, LOW);
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while (Serial.available() <= 0)
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{}
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odometer = Serial.parseInt();
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Serial.println(odometer);
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EEPROM.put(4, odometer);
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Serial.print(odometer);
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Serial.println(" written to EEPROM at address 4");
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}
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}
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else
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{
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runmode();
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}
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}
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else if (mode == 2) // Calibration mode
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{
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calmode();
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}
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}
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void calmode()
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{
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// If we're re-drawing the screen
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if (screenrefresh > 0)
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{
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// Clear display and re-draw our dividing line
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display.clearDisplay();
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display.drawLine(0, 45, 127, 45, WHITE);
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// Display our last pulse count
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display.setTextColor(WHITE);
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display.setCursor(10, 10);
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display.setTextSize(2);
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display.println(pulsecount);
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// Mode
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display.setTextSize(1);
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display.setCursor(70, 48);
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display.println("Calibrate");
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// Draw it and clear flag
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display.display();
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screenrefresh = 0;
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// Save our count (will be multipied up later)
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pulsepermile = pulsecount;
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// Reset counter
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pulsecount = 0;
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}
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// until we get serial input, count as quickly as possible
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while (Serial.available() <= 0)
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{
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// Read pin
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speedstate = digitalRead(4);
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// If it has changed
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if (speedstate != lastspeedstate)
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{
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// If we have gone high
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if (speedstate == 1)
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{
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pulsecount++;
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}
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}
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// Record recent state
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lastspeedstate = speedstate;
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}
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if (Serial.readString() == "RUN\n")
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{
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// Calibrate over distances other than one mile (half mile sensible)
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pulsepermile = pulsepermile * calmultiplier;
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EEPROM.put(0, pulsepermile);
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Serial.print(pulsepermile);
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Serial.println(" written to EEPROM at address 0");
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mode = 1;
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screenrefresh = 1;
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} else {
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screenrefresh = 1;
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}
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}
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void runmode()
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{
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screenrefresh = 1;
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// If we're re-drawing the screen
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if (screenrefresh > 0)
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{
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// Used for any strings sent to screen
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char buf[16];
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// Clear display and re-draw our dividing line
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display.clearDisplay();
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display.drawLine(0, 45, 127, 45, WHITE);
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// Display our Speed, offset differently if > 100 (don't routely show third digit)
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display.setTextColor(WHITE);
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if((pulsecount * 2 * 3600 / pulsepermile) > 100)
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{
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display.setCursor(20, 10);
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display.setTextSize(4);
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sprintf(buf,"%03d",(pulsecount * 2 * 3600 / pulsepermile));
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}else{
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display.setCursor(42, 10);
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display.setTextSize(4);
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sprintf(buf,"%02d",(pulsecount * 2 * 3600 / pulsepermile));
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}
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display.println(buf);
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display.setTextSize(1);
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display.setCursor(90, 32);
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display.println("mph");
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// Display odometer as well
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display.setCursor(5, 48);
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display.setTextSize(1);
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sprintf(buf,"%06d miles",odometer);
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display.println(buf);
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// Draw it and clear flag
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display.display();
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screenrefresh = 0;
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}
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// Add measured pulses to current mile
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currentmile = currentmile + pulsecount;
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// If we have completed a mile
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if (currentmile > pulsepermile)
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{
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// Bump up odometer
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odometer++;
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// Take away a mile
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currentmile = currentmile - pulsepermile;
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// Save to EEPROM
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EEPROM.put(4, odometer);
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}
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// Reset count
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pulsecount = 0;
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// Take samples for half a second
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unsigned long timestamp = micros();
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while (micros() < (timestamp + 500000))
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{
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// Read pin
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speedstate = digitalRead(4);
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// If it has changed
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if (speedstate != lastspeedstate)
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{
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// If we have gone high
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if (speedstate == 1)
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{
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pulsecount++;
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}
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}
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// Record recent state
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lastspeedstate = speedstate;
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}
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}
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