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Sem van der Hoeven
2024-11-12 00:14:45 +01:00
parent ac2c2d6643
commit cf24296f63
6 changed files with 168 additions and 40 deletions
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3
.vscode/c_cpp_properties.json vendored
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@@ -4,7 +4,8 @@
"name": "Linux",
"includePath": [
"${workspaceFolder}/**",
"/home/sem/.arduino15/packages/arduino/hardware/sam/1.6.12/system/CMSIS/Device/ATMEL/sam3xa/include"
"F:/User Files/Sem/Documents/Arduino/libraries/ELMDuino/src",
"F:/User Files/Sem/Documents/Arduino/libraries/**"
],
"defines": [],
"compilerPath": "/usr/bin/gcc",

23
due_obd2/bars.cpp Normal file
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@@ -0,0 +1,23 @@
#include "bars.h"
void draw_bar_horizontal(int start_x, int start_y, int width, int height, int value, int max_value, uint color, char fill_outline, UTFT *display)
{
display->setColor(color);
int bar_width = (int)((float)value / (float)max_value * width);
if (fill_outline)
{
display->drawRect(start_x, start_y, start_x + width, start_y + height);
}
display->fillRect(start_x, start_y, start_x + bar_width, start_y + height);
}
void draw_bar_vertical(int start_x, int start_y, int width, int height, int value, int max_value, uint color, char fill_outline, UTFT *display)
{
display->setColor(color);
int bar_height = (int)((float)value / (float)max_value * height);
if (fill_outline)
{
display->drawRect(start_x, start_y, start_x + width, start_y + height);
}
display->fillRect(start_x, (start_y + height) - bar_height, start_x + width, start_y + height);
}

34
due_obd2/bars.h Normal file
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@@ -0,0 +1,34 @@
#ifndef BARS_H
#define BARS_H
#include <UTFT.h>
/**
* @brief Draws a horizontal bar on the display
* @param start_x The start x position (top left)
* @param start_y The start y position (top left)
* @param width The width of the bar
* @param height The height of the bar
* @param value The value to be displayed
* @param max_value The maximum value of the bar
* @param color The color of the bar
* @param fill_outline Whether to fill the outline of the bar
* @param display The display object
*/
void draw_bar_horizontal(int start_x, int start_y, int width, int height, int value, int max_value, uint color, char fill_outline, UTFT *display);
/**
* @brief Draws a vertical bar on the display
* @param start_x The start x position (top left)
* @param start_y The start y position (top left)
* @param width The width of the bar
* @param height The height of the bar
* @param value The value to be displayed
* @param max_value The maximum value of the bar
* @param color The color of the bar
* @param fill_outline Whether to fill the outline of the bar
* @param display The display object
*/
void draw_bar_vertical(int start_x, int start_y, int width, int height, int value, int max_value, uint color, char fill_outline, UTFT *display);
#endif

54
due_obd2/due_obd2.ino
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@@ -4,6 +4,9 @@ Program to create a car monitor display using:
- a TFT display (https://www.tinytronics.nl/shop/en/displays/tft/3.5-inch-tft-display-320*480-pixels-mega-compatible-ili9486)
- ELM327 Bluetooth OBD2 scanner
- FSC-DB004 (BT 836B) bluetooth module
linux arduino library:
/home/sem/.arduino15/packages/arduino/hardware/sam/1.6.12/system/CMSIS/Device/ATMEL/sam3xa/include
*/
#include "Arduino.h"
@@ -15,6 +18,7 @@ Program to create a car monitor display using:
#include "statemachine.h"
#include "obd2_util.h"
#include "obd2_elm327.h"
#include "bars.h"
#define DEBUG 1
// #define RTT_MR 0x400E1A30U
@@ -90,6 +94,10 @@ char update_slow = 0;
obd2_elm327_t elm327;
int bar_1_x = 0;
int bar_2_x = 10;
int bar_3_y = 50;
void on_init_enter();
void on_init_run();
void on_init_exit();
@@ -107,6 +115,7 @@ state_t init_state =
.on_run = &on_init_run,
.on_exit = &on_init_exit};
state_t main_state =
{
.id = STATE_CAR_INFO,
@@ -318,6 +327,7 @@ void on_main_run()
if (update_slow)
{
update_slow = 0;
obd2_elm327_process_slow(&elm327);
} else {
obd2_elm327_process_fast(&elm327);
@@ -507,7 +517,6 @@ void query_slow_obd2_values()
}
void setup()
{
/* TODO change for TRNG (section 42 of datasheet)*/
@@ -567,24 +576,29 @@ void setup()
void loop()
{
statemachine_loop();
// delay(10);
// while (Serial1.available())
// {
// char rec = Serial1.read();
// #if (DEBUG == 1)
// Serial.println(rec);
// #endif
// }
draw_bar_horizontal(0,0,200,10,bar_1_x,100,VGA_AQUA,1,&display);
// if (should_clear)
// {
// display.clrScr();
// display.setColor(255, 0, 166);
// display.fillRect(LCD_W / 2 - 200, LCD_H / 2 - 100, LCD_W / 2 + 200, LCD_H / 2 + 100);
// display.setColor(0, 247, 255);
// display.print("OBD2 display yeet", CENTER, LCD_H / 2);
// delay(10);
// should_clear = 0;
// }
draw_bar_horizontal(0,20,200,11,bar_2_x,100,VGA_FUCHSIA,1,&display);
draw_bar_vertical(0,50,20,100,bar_3_y,100,VGA_BLUE,1,&display);
bar_1_x++;
if (bar_1_x > 100)
{
bar_1_x = 0;
}
bar_2_x++;
if (bar_2_x > 100)
{
bar_2_x = 10;
}
bar_3_y++;
if (bar_3_y > 100)
{
bar_3_y = 50;
}
display.clrScr();
delay(50);
//statemachine_loop();
}

73
due_obd2/obd2_elm327.cpp
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@@ -3,6 +3,8 @@
#include "obd2_elm327.h"
#define DEBUG 1
#define KM_IN_MILES 1.6093440
#define RPM_MAX 7000
#define THROTTLE_MAX 100
@@ -86,24 +88,14 @@ void obd2_elm327_process_fast(obd2_elm327_t *elm327)
{
switch (current_value_fast)
{
case RPM_V:
{
float rpm = elm327->elm327->rpm();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
elm327->rpm = (uint16_t)rpm;
elm327->value_updates |= (1 << UPDATE_RPM_POS);
current_value_fast = ENGINE_LOAD_V;
}
else if (elm327->elm327->nb_rx_state != ELM_GETTING_MSG)
{
// elm327->elm327->printError();
current_value_fast = ENGINE_LOAD_V;
}
break;
}
case ENGINE_LOAD_V:
{
#if (DEBUG == 1)
float engine_load = 50;
current_value_fast = FUEL_PRESSURE_V;
elm327->engine_load = (uint8_t)engine_load;
elm327->value_updates |= (1 << UPDATE_ENGINE_LOAD_POS);
#else
float engine_load = elm327->elm327->engineLoad();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
@@ -116,10 +108,17 @@ void obd2_elm327_process_fast(obd2_elm327_t *elm327)
// elm327->elm327->printError();
current_value_fast = FUEL_PRESSURE_V;
}
#endif
break;
}
case FUEL_PRESSURE_V:
{
#if (DEBUG == 1)
float fuel_pressure = 8;
elm327->fuel_pressure = (uint16_t)fuel_pressure;
elm327->value_updates |= (1 << UPDATE_FUEL_PRESSURE_POS);
current_value_fast = MANIFOLD_PRESSURE_V;
#else
float fuel_pressure = elm327->elm327->fuelPressure();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
@@ -132,22 +131,30 @@ void obd2_elm327_process_fast(obd2_elm327_t *elm327)
// elm327->elm327->printError();
current_value_fast = MANIFOLD_PRESSURE_V;
}
#endif
break;
}
case MANIFOLD_PRESSURE_V:
{
#if (DEBUG == 1)
float manifold_pressure = 8;
elm327->manifold_pressure = (uint8_t)manifold_pressure;
elm327->value_updates |= (1 << UPDATE_MANIFOLD_PRESSURE_POS);
current_value_fast = ENGINE_LOAD_V;
#else
float manifold_pressure = elm327->elm327->manifoldPressure();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
elm327->manifold_pressure = (uint8_t)manifold_pressure;
elm327->value_updates |= (1 << UPDATE_MANIFOLD_PRESSURE_POS);
current_value_fast = RPM_V;
current_value_fast = ENGINE_LOAD_V;
}
else if (elm327->elm327->nb_rx_state != ELM_GETTING_MSG)
{
// elm327->elm327->printError();
current_value_fast = RPM_V;
current_value_fast = ENGINE_LOAD_V;
}
#endif
break;
}
}
@@ -160,6 +167,11 @@ void obd2_elm327_process_slow(obd2_elm327_t *elm327)
{
case COOLANT_TEMP_V:
{
#if (DEBUG == 1)
elm327->engine_coolant_temp = 102;
elm327->value_updates |= (1 << UPDATE_COOLANT_TEMP_POS);
current_value_slow = INTAKE_AIR_TEMP_V;
#else
float coolant_temp = elm327->elm327->engineCoolantTemp();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
@@ -172,10 +184,16 @@ void obd2_elm327_process_slow(obd2_elm327_t *elm327)
// elm327->elm327->printError();
current_value_slow = INTAKE_AIR_TEMP_V;
}
#endif
break;
}
case INTAKE_AIR_TEMP_V:
{
#if (DEBUG == 1)
elm327->intake_air_temp = 40;
elm327->value_updates |= (1 << UPDATE_INTAKE_AIR_TEMP_POS);
current_value_slow = AMBIENT_AIR_TEMP_V;
#else
float intake_air_temp = elm327->elm327->intakeAirTemp();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
@@ -188,10 +206,16 @@ void obd2_elm327_process_slow(obd2_elm327_t *elm327)
// elm327->elm327->printError();
current_value_slow = AMBIENT_AIR_TEMP_V;
}
#endif
break;
}
case AMBIENT_AIR_TEMP_V:
{
#if (DEBUG == 1)
elm327->ambient_air_temp = 20;
elm327->value_updates |= (1 << UPDATE_AMBIENT_AIR_TEMP_POS);
current_value_slow = OIL_TEMP_V;
#else
float ambient_air_temp = elm327->elm327->ambientAirTemp();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
@@ -204,10 +228,16 @@ void obd2_elm327_process_slow(obd2_elm327_t *elm327)
// elm327->elm327->printError();
current_value_slow = OIL_TEMP_V;
}
#endif
break;
}
case OIL_TEMP_V:
{
#if (DEBUG == 1)
elm327->engine_oil_temp = 80;
elm327->value_updates |= (1 << UPDATE_OIL_TEMP_POS);
current_value_slow = FUEL_LEVEL_V;
#else
float engine_oil_temp = elm327->elm327->oilTemp();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
@@ -220,10 +250,16 @@ void obd2_elm327_process_slow(obd2_elm327_t *elm327)
// elm327->elm327->printError();
current_value_slow = FUEL_LEVEL_V;
}
#endif
break;
}
case FUEL_LEVEL_V:
{
#if (DEBUG == 1)
elm327->fuel_level = 50;
elm327->value_updates |= (1 << UPDATE_FUEL_LEVEL_POS);
current_value_slow = COOLANT_TEMP_V;
#else
float fuel_level = elm327->elm327->fuelLevel();
if (elm327->elm327->nb_rx_state == ELM_SUCCESS)
{
@@ -236,6 +272,7 @@ void obd2_elm327_process_slow(obd2_elm327_t *elm327)
// elm327->elm327->printError();
current_value_slow = COOLANT_TEMP_V;
}
#endif
break;
}
default:

21
due_obd2/obd2_elm327.h
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@@ -68,6 +68,25 @@ Be sure to disconnect the TX and RX pins from the BT module when programming the
#define UPDATE_MANIFOLD_PRESSURE_POS 0x0A
#define UPDATE_FUEL_LEVEL_POS 0x0B
#define COOLANT_TEMP_MIN 0
#define COOLANT_TEMP_MAX 120
#define INTAKE_AIR_TEMP_MIN -40
#define INTAKE_AIR_TEMP_MAX 120
#define AMBIENT_AIR_TEMP_MIN -40
#define AMBIENT_AIR_TEMP_MAX 120
#define OIL_TEMP_MIN -40
#define OIL_TEMP_MAX 120
#define ENGINE_LOAD_MIN 0
#define ENGINE_LOAD_MAX 100
#define BATTERY_VOLTAGE_MIN 0
#define BATTERY_VOLTAGE_MAX 16
#define FUEL_PRESSURE_MIN 0
#define FUEL_PRESSURE_MAX 765
#define MANIFOLD_PRESSURE_MIN 0
#define MANIFOLD_PRESSURE_MAX 255
#define FUEL_LEVEL_MIN 0
#define FUEL_LEVEL_MAX 100
enum BluetoothState
{
BT_INITIALISING = 0,
@@ -116,7 +135,7 @@ char obd2_elm327_init(obd2_elm327_t *elm327);
void obd2_elm327_process_fast(obd2_elm327_t *elm327);
/**
* @brief processes the bluetooth module communication with the OBD2 reader for variables that change slowly
* @brief processes the bluetooth module communication with the OBD2 reader for variables that change slowly (checks every 5 seconds)
*
* @param bt pointer to struct holding bluetooth driver data
*/