mirror of
https://github.com/SemvdH/OBD2-car-display.git
synced 2025-12-15 04:01:04 +00:00
159 lines
3.2 KiB
C++
159 lines
3.2 KiB
C++
/**
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Program to create a car monitor display using:
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- Arduino Due
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- a TFT display (https://www.tinytronics.nl/shop/en/displays/tft/3.5-inch-tft-display-320*480-pixels-mega-compatible-ili9486)
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- ELM327 Bluetooth OBD2 scanner
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- FSC-DB004 (BT 836B) bluetooth module
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*/
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#include "Arduino.h"
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/* include UTFT library */
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#include <UTFT.h>
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#include <DueTimer.h>
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// #include "obd2_timer.h"
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#include "obd2_display.h"
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#include "statemachine.h"
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#define DEBUG 1
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// #define RTT_MR 0x400E1A30U
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/* pins */
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#define PIN_BT_RX 19
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#define PIN_BT_TX 18
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#define PIN_BT_STATE 3 /* connected/disconnected state of BT */
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#define MS(x) x * 1000
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#define S(x) MS(x) * 1000
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extern uint8_t BigFont[];
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extern uint8_t SmallFont[];
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char should_clear = 1;
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char led_state = LOW;
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char flag = 0;
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char counter_temp = 0;
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char main_color = 0;
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char init_text_i = 0;
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int init_text_x = 100;
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char init_text[] = "Initialising...";
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char text_temp[2] = {'a','\0'};
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void on_init_enter();
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void on_init_run();
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void on_init_exit();
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void on_main_enter();
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void on_main_run();
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void __state_none(){ /* do nothing */}
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state_t init_state =
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{
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.id = STATE_INIT,
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.next = STATE_CAR_INFO,
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.on_enter = &on_init_enter,
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.on_run = &on_init_run,
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.on_exit = &on_init_exit};
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state_t main_state =
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{
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.id = STATE_CAR_INFO,
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.next = STATE_CAR_INFO,
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.on_enter = &on_main_enter,
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.on_run = &on_main_run,
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.on_exit = &__state_none};
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/* Set the pins for the display and dev board */
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/* Standard Arduino Mega/Due shield : <display model>,38,39,40,41 */
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UTFT display(ILI9486, 38, 39, 40, 41);
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void on_init_enter()
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{
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display.clrScr();
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Serial.println("Entering init state!");
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}
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void on_init_run()
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{
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delay(500);
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Serial.println("init!");
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}
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void on_init_exit()
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{
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Serial.println("Exiting init state!");
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display.clrScr();
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}
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void on_main_enter()
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{
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Serial.println("Entering main loop");
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}
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void on_main_run()
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{
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delay(500);
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Serial.println("main!");
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}
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void timer_handler()
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{
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statemachine_next();
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}
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void setup()
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{
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/* TODO change for TRNG (section 42 of datasheet)*/
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randomSeed(analogRead(0));
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#if (DEBUG == 1)
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Serial.begin(9600);
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#endif
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/* Serial1 is bluetooth module, pin 18 and 19. */
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Serial1.begin(115200);
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/* Init display */
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display.InitLCD();
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display.setFont(BigFont);
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#if (DEBUG == 1)
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Serial.println("Starting");
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#endif
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pinMode(LED_BUILTIN, OUTPUT);
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statemachine_register_state(&init_state, STATE_INIT);
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statemachine_register_state(&main_state, STATE_CAR_INFO);
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statemachine_init();
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Timer3.attachInterrupt(timer_handler);
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Timer3.start(S(5));
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}
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void loop()
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{
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statemachine_loop();
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// Serial.println("Running");
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// delay(10);
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// while (Serial1.available())
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// {
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// char rec = Serial1.read();
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// #if (DEBUG == 1)
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// Serial.println(rec);
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// #endif
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// }
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// if (should_clear)
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// {
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// display.clrScr();
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// display.setColor(255, 0, 166);
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// display.fillRect(LCD_W / 2 - 200, LCD_H / 2 - 100, LCD_W / 2 + 200, LCD_H / 2 + 100);
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// display.setColor(0, 247, 255);
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// display.print("OBD2 display yeet", CENTER, LCD_H / 2);
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// delay(10);
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// should_clear = 0;
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// }
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}
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