Revision 174:cd27e80f197d, committed 2014-01-05

Comitter:

TickTock

Date:

Sun Jan 05 05:02:41 2014 +0000

Parent:

173:9815b1467039

Child:

175:0357b4159b40

Commit message:

// Calibrate audible brake monitor. brkMonRate is units Wh; brkMonThr is units Wh/s

Changed in this revision

--- a/displayModes.cpp	Sun Dec 29 22:35:09 2013 +0000
+++ b/displayModes.cpp	Sun Jan 05 05:02:41 2014 +0000
@@ -1343,8 +1343,8 @@
     if(availableRegen>lar){
         tt.fillrect(273,238-availableRegen,275,239-lar,White);
         tt.fillrect(317,238-availableRegen,319,239-lar,White);
-        if(availableRegen>=24){
-            for(i=24;i<=availableRegen;i+=24){
+        if(availableRegen>0){
+            for(i=0;i<=availableRegen;i+=24){
                 tt.fillrect(270,238-i,272,239-i,White);
             }
         }

--- a/main.cpp	Sun Dec 29 22:35:09 2013 +0000
+++ b/main.cpp	Sun Jan 05 05:02:41 2014 +0000
@@ -11,8 +11,8 @@
 // * Add climate control impact to main max/min dte and new trip display
 // * Be more efficient with write buffer (use msgLen instead of always storing 8 bytes)
 
-// rev173
-// fixed bugs
+// rev174
+// Calibrated brake monitor. brkMonRate 378947 --> 1 chirp per 4Wh
 
 #include "mbed.h"
 #include "CAN.h"
@@ -23,7 +23,7 @@
 #include "displayModes.h"
 #include "TOUCH_TFTx2.h"
 
-char revStr[7] = "173";
+char revStr[7] = "174";
 unsigned long maxTarget = 1000;
 FATFS USBdrive;
 LocalFileSystem local("local");
@@ -130,7 +130,7 @@
 bool step = false;
 char header[5];
 char data[8];
-signed long motorRPM_x2;
+signed long motorRPM;
 unsigned char skin = ttSkin ;
 unsigned char dtePeriod = 14; //ten minute averaging interval
 float CCkWh_trip[3]={0};
@@ -921,7 +921,7 @@
                 // 227 would give more accurate mph for MXV4s@40psi - 11.75" distance from center of tire to pavement
                 // but then efficiency estimation would not track miles driven as read from the odometer so
                 // making CANary have the same error as the Leaf instrumentation
-                mph[0]=((float) motorRPM_x2)/numSsamples/220; 
+                mph[0]=((float) motorRPM)/numSsamples/110; 
             } else {
                 mph[0]=0;
             }
@@ -978,7 +978,7 @@
                 CCkWh_trip[1]=0;
             }
             
-            motorRPM_x2=0;
+            motorRPM=0;
             mWs_x4=0;
             
             // Compute ESR

--- a/utility.cpp	Sun Dec 29 22:35:09 2013 +0000
+++ b/utility.cpp	Sun Jan 05 05:02:41 2014 +0000
@@ -1,7 +1,7 @@
 // utility.cpp
 #include "utility.h"
-unsigned long brkMonRate = 400000;
-unsigned short brkMonThr = 4000;
+unsigned long brkMonRate = 378947;
+unsigned short brkMonThr = 1895;
 Timeout beepOff;
 unsigned char bCount = 2;
 float bFreq[2] = { 1000, 1000 };
@@ -50,7 +50,7 @@
     static unsigned char ii = 0;
     static unsigned char lasti = 0; // indexindex
     static unsigned char bdi=0;
-    static signed short imotorRPM_x2 = 0;
+    static signed short imotorRPM = 0;
     static unsigned short nLost = 0; // gg - overrun
  
     char sTemp[40];    
@@ -348,21 +348,25 @@
                 incRmin=temp;
             }
             numWsamples++;
-        }else if((mType==1)&&(canRXmsg.id==0x1da)){ //Motor Speed
-            imotorRPM_x2=((canRXmsg.data[4]<<8)|(canRXmsg.data[5]));
-            if(imotorRPM_x2<0){ // take absolute value
-                imotorRPM_x2=-imotorRPM_x2;
-            }
-            motorRPM_x2+=imotorRPM_x2;
+        }else if((mType==2)&&(canRXmsg.id==0x176)){ //Motor Speed
+            imotorRPM=((canRXmsg.data[2]<<8)|(canRXmsg.data[3]));
+            motorRPM+=imotorRPM;
             numSsamples++;
+//        }else if((mType==1)&&(canRXmsg.id==0x1da)){ //Motor Speed
+//            imotorRPM_x2=((canRXmsg.data[4]<<8)|(canRXmsg.data[5]));
+//            if(imotorRPM_x2<0){ // take absolute value
+//                imotorRPM_x2=-imotorRPM_x2;
+//            }
+//            motorRPM_x2+=imotorRPM_x2;
+//            numSsamples++;
 //        }else if((mType==2)&&(canRXmsg.id==0x1ca)){ //Brake Pressure
         }else if((mType==2)&&(canRXmsg.id==0x292)){ //Brake Pressure
             if(brakeMon){
                 if(canRXmsg.data[0]<0xff){
-                    if((canRXmsg.data[6]*imotorRPM_x2)<brkMonThr){
+                    if((canRXmsg.data[6]*imotorRPM)<brkMonThr){ // brkMonThr = 3.6/.0019 = 1895 --> squelch threshold 1Wh/sec
                         chirpInt=0;
-                    }else{
-                        chirpInt=brkMonRate/imotorRPM_x2;
+                    }else{ // imotorRPM*data[6]*.0019=kW; 3.6/kW = seconds until 1Wh;
+                        chirpInt=brkMonRate/imotorRPM; // brkMonRate=3.6/.0019/.02=94736.8 --> 1 chirp per Wh
                         chirpInt/=canRXmsg.data[6];
                     }
                 }
@@ -516,10 +520,17 @@
     const int bufSize = 2048;
     char buffer[bufSize];
     char sTemp[16];
+
+    tt.set_font((unsigned char*) Arial12x12);
+    tt.background(Blue);
+    tt.foreground(Yellow);
+    tt.locate(0,10);
+    tt.cls();
+
     printMsg("Saving local config file.\n");
-    //wait(2);
+    printf("Saving local config file.\n");
     cfile = fopen("/local/config.txt", "w");    
-    fprintf(cfile,"format 10\r\n");
+    fprintf(cfile,"format 11\r\n");
     fprintf(cfile,"x0_off %d\r\n",tt.x0_off);
     fprintf(cfile,"y0_off %d\r\n",tt.y0_off);
     fprintf(cfile,"x0_pp %d\r\n",tt.x0_pp);
@@ -548,8 +559,8 @@
     fprintf(cfile, "firmware %d\r\n", fwCount );            
     fprintf(cfile,"showHealth %d\r\n",(showHealth?1:0));
     fprintf(cfile,"brakeMon %d\r\n",(heaterMon?4:0)+(brakeMon?2:0)+(regenMon?1:0));
-    fprintf(cfile,"brkMonRate %d\r\n", brkMonRate );            
-    fprintf(cfile,"brkMonThr %d\r\n", brkMonThr );            
+    fprintf(cfile,"brkMonRate %2.1f\r\n", (float) brkMonRate/94737 );            
+    fprintf(cfile,"brkMonThr %2.1f\r\n", (float) brkMonThr/1895);            
     for(char i=0;i<8;i++){
         sprintf(sTemp,"usrMsgId %04x",uMsgId[i]);
         fprintf(cfile,"%s\r\n", sTemp );
@@ -561,11 +572,10 @@
     
     // Make copy of CONFIG.TXT
     printMsg("Saving CONFIG.BAK.\n");
-    //wait(2);
     cfile = fopen("/local/CONFIG.TXT", "r");
     sfr = f_open(&efile,"CONFIG.BAK",FA_WRITE|FA_CREATE_NEW);    
     if((cfile != NULL)&&(sfr == FR_OK)){
-        printMsg("Copy config file to USB\n");
+        printf("Copy config file to USB\n");
         while (!feof(cfile))
         {
             bytesRW=fread(buffer, 1, bufSize, cfile);
@@ -578,11 +588,10 @@
 
     // Make copy of ehist.cny
     printMsg("Saving ehist.bak.\n");
-    //wait(2);
     cfile = fopen("/local/ehist.cny", "r");
     sfr = f_open(&efile,"ehist.bak",FA_WRITE|FA_CREATE_NEW);    
     if((cfile != NULL)&&(sfr == FR_OK)){
-        printMsg("Copy ehist file to USB\n");
+        printf("Copy ehist file to USB\n");
         while (!feof(cfile))
         {
             bytesRW=fread(buffer, 1, bufSize, cfile);
@@ -592,13 +601,14 @@
         fclose(cfile);
         f_close(&efile);
     }
-    //wait(2);
+    wait(3);
 }
 
 void readConfig(){
     FILE *cfile;
     int ff,readHex,readBool;
     char sTemp[16];
+    float readFloat;
 
     cfile = fopen("/local/config.txt", "r");
     if (cfile==NULL){ // if doesn't exist --> create
@@ -655,8 +665,17 @@
             brakeMon = (bool)(readBool&1);
             regenMon = (bool)(readBool&2);
             heaterMon = (bool)(readBool&4);
-            fscanf(cfile, "brkMonRate %d\r\n", &brkMonRate );        
-            fscanf(cfile, "brkMonThr %d\r\n", &brkMonThr );            
+            if(ff>10){
+                fscanf(cfile, "brkMonRate %f\r\n", &readFloat );
+                brkMonRate = 94737 * readFloat;
+                fscanf(cfile, "brkMonThr %f\r\n", &readFloat );
+                brkMonThr = 1895 * readFloat;
+            }else{
+                fscanf(cfile, "brkMonRate %d\r\n", &brkMonRate );
+                fscanf(cfile, "brkMonThr %d\r\n", &brkMonThr);
+                brkMonRate = 378948;
+                brkMonThr = 1895;
+            }
         }
         if(ff>7){
             for(char i=0;i<8;i++){
@@ -674,11 +693,11 @@
             fscanf(cfile, "kWperGid %f\r\n", &kWperGid );
             }
         fclose(cfile);
-        if((ff>10)||(ff<1)||(ledHi<0.1)||(scale12V<10)||(tt.x_mid<16000)||(ledHi>1)||(ledLo>1)||(dMode[0]>maxScreens)||(dMode[1]>maxScreens)){ //Sanity check a few things
+        if((ff>11)||(ff<1)||(ledHi<0.1)||(scale12V<10)||(tt.x_mid<16000)||(ledHi>1)||(ledLo>1)||(dMode[0]>maxScreens)||(dMode[1]>maxScreens)){ //Sanity check a few things
             //Something wrong. Load defaults
-            printf("Invalid config file.  Loading defaults.\n");
+            printMsg("Invalid config file.  Loading defaults.\n");
             wait(3);
-            ff=10;
+            ff=11;
             tt.x0_off=5732;
             tt.y0_off=34009;
             tt.x0_pp=77;
@@ -703,8 +722,8 @@
             brakeMon=true;
             regenMon=true;
             heaterMon=true;
-            brkMonRate=400000;
-            brkMonThr=4000;
+            brkMonRate=378947; // 4Wh per chirp
+            brkMonThr=1895; // 1Wh per second
             uMsgId[0]=0x5103;
             uMsgId[1]=0x50a3;
             uMsgId[2]=0x54a4;
@@ -717,9 +736,9 @@
             autoSync=false;
             kWperGid=0.080;
             }
-        if(ff<9){//If not latest format, save as latest format
+        if(ff<11){//If not latest format, save as latest format
             saveConfig();
-            printMsg("Config file format updated.\n"); // config forat updates
+            printMsg("Config file format updated.\n"); // config format updates
         }
         printMsg("Config file loaded.\n"); // config file loaded
     }
@@ -1050,6 +1069,8 @@
     tt.foreground(Yellow);
     tt.locate(0,10);
     tt.cls();
+    
+    printMsg("Copy config file from USB\n");
     // Check for config file on USB drive
     sfr = f_open(&efile,"CONFIG.TXT",FA_READ|FA_OPEN_EXISTING);    
     if(sfr == FR_OK){        
@@ -1070,6 +1091,7 @@
     }
 
     // Check for history file on USB drive
+    printMsg("Copy ehist file from USB\n");
     sfr = f_open(&efile,"ehist.cny",FA_READ|FA_OPEN_EXISTING);    
     if(sfr == FR_OK){        
         printf("Copy ehist file from USB\n");
@@ -1145,7 +1167,7 @@
 
 //Sample CONFIG.TXT
 /*
-format 9
+format 11
 x0_off 5732
 y0_off 34009
 x0_pp 77
@@ -1168,8 +1190,8 @@
 firmware 1
 showHealth 1
 brakeMon 1
-brkMonRate 400000
-brkMonThr 4000
+brkMonRate 4.0
+brkMonThr 1.0
 usrMsgId 5103
 usrMsgId 50a3
 usrMsgId 54a4
@@ -1180,5 +1202,5 @@
 usrMsgId 0000
 modelYear 2011
 autoSync 1
-kWperGid 0.080
+kWperGid 0.075
 */
\ No newline at end of file

--- a/utility.h	Sun Dec 29 22:35:09 2013 +0000
+++ b/utility.h	Sun Jan 05 05:02:41 2014 +0000
@@ -47,7 +47,7 @@
 extern float playbackInt;
 extern signed long mWs_x4;
 extern unsigned short numWsamples;
-extern signed long motorRPM_x2;
+extern signed long motorRPM;
 extern unsigned short numSsamples;
 extern unsigned char skin;
 extern unsigned char dtePeriod;