Sam Thomas
This Project allows for you to see live engine data from your vehicle on the LCD display. Utilizing K64F platform,Nokia 5110 LCD and HC05 Bluetooth hardware to interface with an In-Vehicle ELM327 Bluetooth dongle connected to the OBDII port. The K64F system will query the ELM327 device for live engine data and display it onscreen.
Revision 0:969924e823b4, committed 2015-05-12
- Comitter:
- samthomas90
- Date:
- Tue May 12 03:32:11 2015 +0000
- Child:
- 1:2537162d070e
- Commit message:
- Initial Commit-Mode 3 Work in progress
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
| mbed.bld | Show annotated file Show diff for this revision Revisions of this file |
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Tue May 12 03:32:11 2015 +0000
@@ -0,0 +1,134 @@
+/*
+Enhanced Vehicle Diagnostics
+ELM327 Version Utilizing HC-05 Bluetooth hardware and ELM327
+*/
+#include "mbed.h"
+#include "N5110.h"
+#include <string>
+using namespace std;
+
+N5110 LCD(PTB2,PTD0,PTB9,PTB3,PTD2,PTD1,PTD0);
+Serial HC05(PTC17,PTC16);
+Serial SR(USBTX,USBRX);
+
+DigitalIn sw2(SW2);
+DigitalIn sw3(SW3);
+DigitalOut led(LED_RED);
+
+char OBD[3];
+
+char percent='%';
+int flag=1;
+char OBD[]={0x01}
+char zero[2]={0x01,0x0c,};
+char OBD[13];
+char RPM[13];
+char SPD[13];
+char TMP[13];
+char MAF[13];
+char THR[13];
+
+void OBDInit(void);
+void OBDLiveData(void);
+int main() {
+ char c;
+ HC05.format(8, Serial::None, 1);
+ HC05.baud(115200);
+ LCD.init();
+ LCD.clear();
+ led=1;
+ //Initialization message//
+ LCD.printString ("-ENHANCED-", 0, 0);
+ LCD.printString ("-VEHICLE-", 0, 1);
+ LCD.printString ("-DIAGNOSTICS-", 0, 2);
+ LCD.printString ("ECE 595", 0, 3);
+ LCD.printString ("SAM THOMAS", 0, 4);
+ wait(1);
+ LCD.clear();
+ LCD.printString ("-INITIALIZE-",0, 2);
+
+ wait(1);
+ LCD.clear();
+ //HC05.printf(zero);
+ while(1){
+ if(flag){//static display incase HC05 connection fails
+ LCD.printString("RPM 3000", 0, 0);
+
+ LCD.printString("SPD 65KMPH", 0, 1);
+
+ LCD.printString("TMP 80 C", 0, 2);
+
+ LCD.printString("MAF 190 g/s", 0, 3);
+
+ LCD.printString("THR 60", 0, 4);
+ }
+
+ }
+}
+void OBDInit(){
+ if(HC05.readable()){
+ HC05.printf("ATZ\r");
+ HC05.printf("ATSP0\r");
+ HC05.printf("0100\r");
+ return 1;
+ }
+ else
+ {
+ LCD.printString("Bluetooth NOT available");
+ return 0;
+ }
+}
+void OBDLiveData(){
+ if(HC05.readable()){
+ c =HC05.getc();
+
+
+ //SR.putc(c);
+ if(c=='~')//Get the initial character sent
+ {
+ flag=0;
+ //for(int i=0;i<14:i++){
+ LCD.clear();
+ //takes in the whole string sent to it From PC below
+ HC05.scanf("%s",&OBD);
+ //OBD[i]=HC05.getc();
+ //}
+ SR.printf(OBD);
+ sprintf(RPM,"RPM %c%c%c%c",OBD[0],OBD[1],OBD[2],OBD[3]);
+ sprintf(SPD,"SPEED %c%cKMPH",OBD[4],OBD[5]);
+ sprintf(TMP,"E.TMP %c%c F",OBD[6],OBD[7]);
+ sprintf(MAF,"MAF %c%c%c g/s",OBD[8],OBD[9],OBD[10]);
+ sprintf(THR,"THR %c%c %c",OBD[11],OBD[12],percent);
+ LCD.clear();
+ LCD.printString(RPM, 0, 0);
+ SR.printf(RPM);
+ LCD.printString(SPD, 0, 1);
+ SR.printf(SPD);
+ LCD.printString(TMP, 0, 2);
+ SR.printf(TMP);
+ LCD.printString(MAF, 0, 3);
+ SR.printf(MAF);
+ LCD.printString(THR, 0, 4);
+ SR.printf(THR);
+ //If SW2 is pressed Check Engine codes are displayed
+ if(!sw2){
+ if(!sw2){
+ LCD.clear();
+ LCD.printString ("CHECKING ", 0, 0);
+ LCD.printString ("ENGINE ", 0, 1);
+ LCD.printString ("Code(s) ", 0, 2);
+ wait(2);
+ LCD.clear();
+ LCD.printString ("DTC CODE: ", 0, 0);
+ LCD.printString ("P0103 ", 0, 1);
+ LCD.printString ("Mass Air Flow", 0, 2);
+ LCD.printString ("High Input", 0, 3);
+ led=0;
+ wait(2);
+ }
+ }
+ }
+
+ }
+
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Tue May 12 03:32:11 2015 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/8ab26030e058 \ No newline at end of file