main.cpp

00001 // reference : http://mbed.org/users/pangsk/programs/ecu_reader/
00002 // Only read CAN-bus data, (not send any data)
00003 // v1.0
00004 
00005 /*
00006 
00007 mbed Can-Bus demo
00008 
00009 This program is to demonstrate the CAN-bus capability of the mbed module.
00010 
00011 http://www.skpang.co.uk/catalog/product_info.php?products_id=741
00012 
00013 v1.0 July 2010
00014 
00015 ********************************************************************************
00016 
00017 WARNING: Use at your own risk, sadly this software comes with no guarantees.
00018 This software is provided 'free' and in good faith, but the author does not
00019 accept liability for any damage arising from its use.
00020 
00021 ********************************************************************************
00022 
00023 
00024 */
00025 
00026 #include "mbed.h"
00027 #include "ecu_reader.h"
00028 #include "globals.h"
00029 #include "TextLCD.h"
00030 #include "SDFileSystem.h"
00031 
00032 //GPS gps(p28, p27);
00033 TextLCD lcd(p24, p26, p27, p28, p29, p30); // rs, e, d0, d1, d2, d3, for starboard orange
00034 SDFileSystem sd(p5, p6, p7, p8, "sd"); //for starboard orange
00035 
00036 /*DigitalIn click(p21);   // Joystick inputs
00037 DigitalIn right(p22);
00038 DigitalIn down(p23);
00039 DigitalIn left(p24);
00040 DigitalIn up(p25);*/
00041 
00042 ecu_reader obdii(CANSPEED_500);     //Create object and set CAN speed
00043 //void gps_demo(void);
00044 void sd_demo(void);
00045 //Timer CANTimer;
00046 Timer CANTimer2;
00047 
00048 int main() {
00049     
00050 //    char buffer[20];
00051  
00052     lcd.locate(0,0);                // Set LCD cursor position
00053     lcd.printf("CAN-Bus demo");
00054     
00055     lcd.locate(0,1);
00056     lcd.printf("www.skpang.co.uk");
00057     pc.baud(460800);
00058     pc.printf("\n\rCAN-bus demo...");
00059     
00060     wait(3);
00061     lcd.cls();
00062     
00063 
00064 /*    while(1)    // Wait until option is selected by the joystick
00065     {
00066    
00067         if(down == 0) gps_demo();
00068         if(left == 0) sd_demo(); 
00069         if(up == 0) break;
00070         
00071     }*/
00072 
00073     while(1) {  // Main CAN loop
00074         led2 = 1;
00075         wait(0.1);
00076         led2 = 0;
00077         wait(0.1);
00078         
00079         CANTimer2.reset();
00080         CANTimer2.start();
00081         pc.printf("CANTimer.start\n");
00082         
00083         while (CANTimer2.read_ms() < TIMEOUT) {
00084 //            pc.printf("CANTimer.read_ms(): %dms ", CANTimer2.read_ms());
00085             
00086             // http://mbed.org/cookbook/OBDII-Can-Bus
00087             
00088             if (can2.read(can_MsgRx)) {
00089                 pc.printf("Message read\n\r");
00090                 
00091                  //print message id
00092                 pc.printf("can_MsgRx.id: %x\n\r", can_MsgRx.id);
00093 
00094                 //print length of message
00095                 pc.printf("Hex: can_MsgRx.len: %x\n\r", can_MsgRx.len);
00096 
00097                 //print data[2]
00098                 //pc.printf("can_MsgRx.data[2]: %x\n\r", can_MsgRx.data[2]);
00099 
00100                 for (int i = 0; i < (int)can_MsgRx.len; i++) {
00101                     pc.printf("can_MsgRx.data[%d]: %x\n\r", i, can_MsgRx.data[i]);
00102                 }
00103             }
00104         }
00105     }
00106 
00107 
00108 
00109 
00110         
00111         
00112 /*        if(obdii.request(ENGINE_RPM,buffer) == 1)   // Get engine rpm and display on LCD
00113         {
00114             lcd.locate(0,0);
00115             lcd.printf(buffer);
00116         }   
00117          
00118         if(obdii.request(ENGINE_COOLANT_TEMP,buffer) == 1)
00119         {
00120             lcd.locate(9,0);
00121             lcd.printf(buffer);
00122         }
00123         
00124         if(obdii.request(VEHICLE_SPEED,buffer) == 1)
00125         {
00126             lcd.locate(0,1);
00127             lcd.printf(buffer);
00128         }
00129      
00130         if(obdii.request(THROTTLE,buffer) ==1 )
00131         {
00132             lcd.locate(9,1);
00133             lcd.printf(buffer);          
00134         }
00135 */
00136        
00137 }
00138 
00139 /*void gps_demo(void)
00140 {
00141     lcd.cls();
00142     lcd.printf("GPS demo");
00143     lcd.locate(0,1);
00144     lcd.printf("Waiting for lock");
00145  
00146     wait(3);    
00147     lcd.cls();
00148    
00149     while(1)
00150     {
00151       if(gps.sample()) {
00152          lcd.cls();
00153         lcd.printf("Long:%f", gps.longitude);
00154            lcd.locate(0,1);
00155         lcd.printf("Lat:%f", gps.latitude);
00156             pc.printf("I'm at %f, %f\n", gps.longitude, gps.latitude);
00157         } else {
00158             pc.printf("Oh Dear! No lock :(\n");
00159             lcd.cls();
00160             lcd.printf("Waiting for lock");
00161    
00162         }
00163     }
00164  
00165 }*/
00166 
00167 /*
00168 void sd_demo(void)
00169 {
00170     lcd.cls();
00171     lcd.printf("SD demo");
00172     wait(2);      
00173     lcd.cls();
00174     
00175     FILE *fp = fopen("/sd/sdtest2.txt", "w");
00176     if(fp == NULL) {
00177         lcd.cls();
00178         lcd.printf("Could not open file for write\n");
00179     }
00180     fprintf(fp, "Hello fun SD Card World! testing 1234");
00181     fclose(fp); 
00182     lcd.locate(0,1);
00183     lcd.printf("Writtern to SD card");
00184         
00185     while(1)
00186     {
00187         led2 = 1;
00188         wait(0.1);
00189         led2 = 0;
00190         wait(0.1);
00191    
00192     }
00193  
00194 }
00195 */