From 7b6035179821fd7a7553ac3b60f36e84fc1cccd4 Mon Sep 17 00:00:00 2001
From: Ludovic Pouzenc <ludovic@pouzenc.fr>
Date: Sat, 12 Jun 2021 00:42:19 +0200
Subject: Import inital sketch lpo pour dumper les DTC et des valeurs live

---
 lpo/MyLCD.h | 51 ++++++++++++++++++++++++++++++++++
 lpo/MyOBD.h | 32 +++++++++++++++++++++
 lpo/lpo.ino | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 175 insertions(+)
 create mode 100644 lpo/MyLCD.h
 create mode 100644 lpo/MyOBD.h
 create mode 100644 lpo/lpo.ino

(limited to 'lpo')

diff --git a/lpo/MyLCD.h b/lpo/MyLCD.h
new file mode 100644
index 0000000..565e110
--- /dev/null
+++ b/lpo/MyLCD.h
@@ -0,0 +1,51 @@
+#ifndef __MYLCD_H
+#define __MYLCD_H
+#undef PROGMEM
+#define PROGMEM
+#include <MultiLCD.h>
+class MyLCD : public LCD_ILI9325D {
+  /* 2.8" ILI9325 based LCD 320x240x16bpp*/
+  public:
+  uint8_t column, line;
+  MyLCD() {
+    LCD_ILI9325D::setFontSize(FONT_SIZE_SMALL);
+    this->clear();
+  }
+  byte getLines() { return 30; }
+  byte getCols() { return 53; }
+  void setCursor(uint8_t column, uint8_t line) {
+    /* column and line as in a terminal, start at line 1, col 1. each column is one character wide*/
+    this->column = (column==0)?1:column;
+    this->line = (column==0)?1:line;
+    LCD_ILI9325D::setCursor((column-1)*6, line-1);
+  }
+  void clear() {
+    LCD_ILI9325D::clear();
+    this->setCursor(1, 1);
+  }
+  size_t println() {
+    if ( this->line < this->getLines() ) {
+      this->setCursor(1, this->line+1);
+    } else {
+      this->clear();
+    }
+  }
+  void moveRight(size_t len) {
+    if ( this->column+len <= this->getCols() ) {
+      this->setCursor(this->column+len, this->line);
+    } else {
+      this->println();
+    }
+  }
+  size_t println(const String &s) {
+    size_t len = LCD_ILI9325D::print(s);
+    this->println();
+    return len;
+  }
+  size_t print(const String &s) {
+    size_t len = LCD_ILI9325D::print(s);
+    this->moveRight(len);
+    return len;
+  }
+};
+#endif
diff --git a/lpo/MyOBD.h b/lpo/MyOBD.h
new file mode 100644
index 0000000..ea143be
--- /dev/null
+++ b/lpo/MyOBD.h
@@ -0,0 +1,32 @@
+#ifndef __MYOBD_H
+#define __MYOBD_H
+#include <OBD.h>
+class MyOBD : public COBDI2C {
+  public:
+  /* Fake OBD for testing
+  int i;
+  MyOBD() {
+    i=0;
+  }
+  byte begin() {
+    delay(500);
+    return 1;
+  }
+  bool init() {
+    delay(500);
+    return ++i>4;
+  }
+  bool readPID(byte pid, int& result) {
+    result=millis();
+    if ( result%1000 == 0 ) { this->errors++; }
+    return true;
+  }
+  byte readDTC(uint16_t codes[], byte maxCodes = 1) {
+    codes[0]=6002;
+    codes[1]=6032;
+    codes[2]=12;
+    return 4;
+  }
+  */
+};
+#endif
diff --git a/lpo/lpo.ino b/lpo/lpo.ino
new file mode 100644
index 0000000..85a595b
--- /dev/null
+++ b/lpo/lpo.ino
@@ -0,0 +1,92 @@
+/*************************************************************************
+* Inpired from simple_obd_display.ino by Stanley Huang <stanley@freematics.com.au>
+* (Simple OBD Data Display for Freematics OBD-II Adapter)
+*************************************************************************/
+#include "MyLCD.h"
+#include "MyOBD.h"
+
+MyLCD lcd;
+MyOBD obd;
+
+void setup()
+{
+  lcd.begin();
+  lcd.print("obd.begin()");
+  obd.begin();
+  lcd.println(" done");
+  reconnect();
+  showDTC();
+  initScreen();
+}
+
+void reconnect()
+{
+  lcd.setCursor(1,2);
+  lcd.print("obd.init()                       ");
+  lcd.setCursor(11,2);
+  while (!obd.init()) {
+    lcd.print(".");
+  }
+  lcd.println(" done");
+}
+
+void showDTC() {
+  static char buf[10];
+  static uint16_t codes[16];
+  byte c, count = obd.readDTC(codes, 16);
+  lcd.print("DTC: ");
+  if ( count==0 ) {
+    lcd.println("none");
+  } else {
+    for (c=0; c<count; c++) {
+        sprintf(buf, "P%04u ", codes[c]);
+        lcd.print(buf);
+    }
+    lcd.println();
+  }
+}
+
+void loop()
+{
+  static byte pids[]= {PID_RPM, PID_SPEED, PID_ENGINE_LOAD, PID_THROTTLE};
+  static byte index = 0, prev_err=obd.errors;
+  byte pid = pids[index];
+  int value;
+  // send a query to OBD adapter for specified OBD-II pid
+  if (obd.readPID(pid, value)) {
+      showData(pid, value);
+  }
+  index = (index + 1) % sizeof(pids);
+
+  if (obd.errors > prev_err) {
+      showData(0, obd.errors);
+  }
+  if ( obd.errors > 10 ) {
+    obd.errors=0;
+    reconnect();
+  }
+}
+
+void initScreen()
+{
+  lcd.setCursor(1,4);
+  lcd.println("comm. errors:       ");
+  lcd.println("         rpm:       ");
+  lcd.println("       speed:        km/h");
+  lcd.println("       throt:        %");
+  lcd.println("        load:       ");
+  showData(0, obd.errors);
+}
+
+void showData(byte pid, int value)
+{
+  static char buf[10];
+  int res = sprintf(buf, "%6d", value);
+  switch (pid) {
+  case 0:               lcd.setCursor(15,4); lcd.print(buf); break;
+  case PID_RPM:         lcd.setCursor(15,5); lcd.print(buf); break;
+  case PID_SPEED:       lcd.setCursor(15,6); lcd.print(buf); break;
+  case PID_THROTTLE:    lcd.setCursor(15,7); lcd.print(buf); break;
+  case PID_ENGINE_LOAD: lcd.setCursor(15,8); lcd.print(buf); break;
+  }
+}
-- 
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