sem/OBD2-car-display
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Sem van der Hoeven
2025-04-03 00:22:07 +02:00
parent 2f325e3254
commit 48933e2bab
6 changed files with 218 additions and 92 deletions
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147
due_obd2/due_obd2.ino
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@@ -19,48 +19,7 @@ Program to create a car monitor display using:
#include "obd2_util.h"
#include "obd2_elm327.h"
#include "bars.h"
#define DEBUG 1
#define SKIP_BT_CHECK 1
// #define RTT_MR 0x400E1A30U
#define MS(x) x * 1000
#define S(x) MS(x) * 1000
#define INIT_TEXT_WIDTH 15
#define INIT_PERCENTAGE_WIDTH 4
#define FLAG_INIT_UPDATE_TEXT_POS 0x01
#define FLAG_INIT_CLEAR_POS 0x02
#define FLAG_INIT_UPDATE_PERCENT_POS 0x03
#define FLAG_DEVICE_LABEL_UPDATE_POS 0x04
#define FLAG_DEVICE_LABEL_SHOULD_UPDATE_POS 0x05 /* 0 if label should be updated, 1 if valyue should be updated */
#define FLAG_DEVICE_LABEL_UPDATE_KB_POS 0x06 /* count KB up */
#define FLAG_INIT_ELM327_DONE_POS 0x07 /* elm327 done initializing */
#define LOGO_MIN_STEP 20
#define LOGO_MAX_POS_Y 124
#define FLAG_LOGO_UPDATE 0x00
#define LOGO_TEXT_WIDTH 16
#define RAM_AMOUNT_KB 96
#define RAM_AMOUNT_B 98304
#define RAM_TEXT_WIDTH 9
#define DEV_LABEL_LENGTH 10
#define COLOR_ORANGE 255, 96, 33
/****************************************/
/* x and y positions for several gauges */
/****************************************/
/* box that holds temperature gauges */
#define TEMP_BOX_PADDING 5
#define TEMP_BOX_X_START 300
#define TEMP_BOX_Y_START TEMP_BOX_PADDING
#define TEMP_BOX_CONTENT_WIDTH 180 // witdth of the box to calculate the content in it
#define TEMP_BOX_WIDTH TEMP_BOX_CONTENT_WIDTH - TEMP_BOX_PADDING // width of the box to draw the outline
#define TEMP_BOX_HEIGHT 200 - TEMP_BOX_PADDING
#define TEMP_BOX_COLOR VGA_GRAY
#include "defines.h"
enum DeviceLabel
{
@@ -327,13 +286,16 @@ void on_main_enter()
Serial.println("Entering main loop");
#endif
Timer0.attachInterrupt(query_slow_obd2_values);
Timer0.start(MS(5000));
Timer0.start(MS(OBD2_SLOW_VALUES_QUERY_INTERVAL_MS));
// draw section for temps
display.setColor(TEMP_BOX_COLOR);
display.drawRect(TEMP_BOX_X_START, TEMP_BOX_Y_START, TEMP_BOX_X_START + TEMP_BOX_WIDTH, TEMP_BOX_Y_START + TEMP_BOX_HEIGHT);
display.setColor(VGA_AQUA);
// update slow values so we don't have to wait for the first time the timer fires
query_slow_obd2_values();
}
/**
@@ -343,6 +305,9 @@ void on_main_run()
{
if (update_slow)
{
#if (DEBUG == 1)
Serial.println("Updating slow values");
#endif
update_slow = 0;
obd2_elm327_process_slow(&elm327);
}
@@ -351,22 +316,22 @@ void on_main_run()
obd2_elm327_process_fast(&elm327);
}
if (elm327.value_updates & (1 << UPDATE_RPM_POS))
{
elm327.value_updates &= ~(1 << UPDATE_RPM_POS);
int width = (int)(display.getDisplayXSize() * ((float)elm327.rpm / 7000.0));
display.fillRect(0, 20, width, 20);
display.setColor(VGA_FUCHSIA);
display.print("rpm", 0, 20);
display.printNumI(elm327.engine_load, 30, 20, 4, '0');
display.setColor(VGA_AQUA);
}
if (elm327.value_updates & (1 << UPDATE_COOLANT_TEMP_POS))
{
elm327.value_updates &= ~(1 << UPDATE_COOLANT_TEMP_POS);
display.print("coolant temp", 0, 100);
display.printNumI(elm327.engine_coolant_temp, 200, 100, 4, '0');
display.setColor(VGA_FUCHSIA);
display.print("coo ", TEMP_BOX_CONTENT_X_START, TEMP_BOX_COOLANT_TEXT_Y_START);
display.setColor(VGA_AQUA);
display.printNumI(elm327.engine_coolant_temp, TEMP_BOX_CONTENT_X_START + (4 * display.getFontXsize()), TEMP_BOX_COOLANT_TEXT_Y_START, 4, '0');
bar_draw_horizontal(TEMP_BOX_CONTENT_X_START, TEMP_BOX_COOLANT_BAR_Y_START, TEMP_BOX_BAR_WIDTH, TEMP_BOX_BAR_HEIGHT, elm327.engine_coolant_temp, COOLANT_TEMP_MAX, COLOR_ORANGE, 1, &display);
#if (DEBUG == 1)
Serial.print("bar height ");
Serial.println(TEMP_BOX_BAR_HEIGHT);
Serial.print("coolant temp: ");
Serial.println(elm327.engine_coolant_temp);
#endif
}
if (elm327.value_updates & (1 << UPDATE_FUEL_PRESSURE_POS))
@@ -383,26 +348,50 @@ void on_main_run()
display.printNumF(elm327.fuel_level, 200, 140, 4, '0');
}
// if (elm327.value_updates & (1 << UPDATE_INTAKE_AIR_TEMP_POS))
// {
// elm327.value_updates &= ~(1 << UPDATE_INTAKE_AIR_TEMP_POS);
// display.print("intake air temp", 0, 160);
// display.printNumI(elm327.intake_air_temp, 200, 160, 4, '0');
// }
if (elm327.value_updates & (1 << UPDATE_INTAKE_AIR_TEMP_POS))
{
elm327.value_updates &= ~(1 << UPDATE_INTAKE_AIR_TEMP_POS);
display.setColor(VGA_FUCHSIA);
display.print("int ", TEMP_BOX_CONTENT_X_START, TEMP_BOX_INTAKE_AIR_TEXT_Y_START);
display.setColor(VGA_AQUA);
display.printNumI(elm327.intake_air_temp, TEMP_BOX_CONTENT_X_START + (4 * display.getFontXsize()), TEMP_BOX_INTAKE_AIR_TEXT_Y_START, 4, '0');
bar_draw_horizontal(TEMP_BOX_CONTENT_X_START, TEMP_BOX_INTAKE_AIR_BAR_Y_START, TEMP_BOX_BAR_WIDTH, TEMP_BOX_BAR_HEIGHT, elm327.intake_air_temp, INTAKE_AIR_TEMP_MAX, COLOR_ORANGE, 1, &display);
// if (elm327.value_updates & (1 << UPDATE_AMBIENT_AIR_TEMP_POS))
// {
// elm327.value_updates &= ~(1 << UPDATE_AMBIENT_AIR_TEMP_POS);
// display.print("ambient air temp", 0, 180);
// display.printNumI(elm327.ambient_air_temp, 200, 180, 4, '0');
// }
#if (DEBUG == 1)
Serial.print("intake air temp: ");
Serial.println(elm327.intake_air_temp);
#endif
}
// if (elm327.value_updates & (1 << UPDATE_OIL_TEMP_POS))
// {
// elm327.value_updates &= ~(1 << UPDATE_OIL_TEMP_POS);
// display.print("oil temp", 0, 200);
// display.printNumF(elm327.engine_oil_temp, 200, 200, 4, '0');
// }
if (elm327.value_updates & (1 << UPDATE_AMBIENT_AIR_TEMP_POS))
{
elm327.value_updates &= ~(1 << UPDATE_AMBIENT_AIR_TEMP_POS);
display.setColor(VGA_FUCHSIA);
display.print("amb ", TEMP_BOX_CONTENT_X_START, TEMP_BOX_AMBIENT_AIR_TEXT_Y_START);
display.setColor(VGA_AQUA);
display.printNumI(elm327.ambient_air_temp, TEMP_BOX_CONTENT_X_START + (4 * display.getFontXsize()), TEMP_BOX_AMBIENT_AIR_TEXT_Y_START, 4, '0');
bar_draw_horizontal(TEMP_BOX_CONTENT_X_START, TEMP_BOX_AMBIENT_AIR_BAR_Y_START, TEMP_BOX_BAR_WIDTH, TEMP_BOX_BAR_HEIGHT, elm327.ambient_air_temp, AMBIENT_AIR_TEMP_MAX, COLOR_ORANGE, 1, &display);
#if (DEBUG == 1)
Serial.print("ambient air temp: ");
Serial.println(elm327.ambient_air_temp);
#endif
}
if (elm327.value_updates & (1 << UPDATE_OIL_TEMP_POS))
{
elm327.value_updates &= ~(1 << UPDATE_OIL_TEMP_POS);
display.setColor(VGA_FUCHSIA);
display.print("oil ", TEMP_BOX_CONTENT_X_START, TEMP_BOX_OIL_TEXT_Y_START);
display.setColor(VGA_AQUA);
display.printNumI(elm327.engine_oil_temp, TEMP_BOX_CONTENT_X_START + (4 * display.getFontXsize()), TEMP_BOX_OIL_TEXT_Y_START, 4, '0');
bar_draw_horizontal(TEMP_BOX_CONTENT_X_START, TEMP_BOX_OIL_BAR_Y_START, TEMP_BOX_BAR_WIDTH, TEMP_BOX_BAR_HEIGHT, elm327.engine_oil_temp, OIL_TEMP_MAX, COLOR_ORANGE, 1, &display);
#if (DEBUG == 1)
Serial.print("oil temp: ");
Serial.println(elm327.engine_oil_temp);
#endif
}
if (elm327.value_updates & (1 << UPDATE_ENGINE_LOAD_POS))
{
@@ -574,16 +563,16 @@ void setup()
#endif
if (!obd2_elm327_init(&elm327))
{
#if (DEBUG == 1)
#if (DEBUG == 1)
Serial.println("Shit man its fucked");
#endif
#endif
}
elm327.on_state_change = &bt_state_changed;
#if (DEBUG == 1)
#if (DEBUG == 1)
Serial.println("done with elm327 init");
Serial.println(elm327.elm327->connected);
#endif
#endif
#if (SKIP_BT_CHECK == 1)
update_percent(10);
#endif