Tick Tock / Mbed 2 deprecated CANcan

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Dependencies:   SDHCFileSystem mbed

main.cpp@18:a4cf0547bfc2, 2012-12-17 (annotated)

Committer:
TickTock
Date:
Mon Dec 17 02:57:31 2012 +0000
Revision:
18:a4cf0547bfc2
Parent:
17:f0209f149b3e
Child:
19:610a71236b6e
Fixed timestamp bug

Who changed what in which revision?

UserRevisionLine numberNew contents of line
TickTock 1:dafb963c3c14 1 //CANcan.cpp
TickTock 8:6872945e8e91 2 //A dual canbus monitoring "blackbox" application for the Nissan Leaf
TickTock 8:6872945e8e91 3 //Dumps all messages to a file on the SDRAM
TickTock 8:6872945e8e91 4 //Todo:
TickTock 15:3ff21ce810da 5 // Get timestamp on files
TickTock 8:6872945e8e91 6 //
TickTock 8:6872945e8e91 7 // Connections:
TickTock 1:dafb963c3c14 8 //LEAF OBD
TickTock 7:281df0ba57d0 9 //1:
TickTock 1:dafb963c3c14 10 //2:
TickTock 1:dafb963c3c14 11 //3: AVCAN-L White/Blue
TickTock 7:281df0ba57d0 12 //4:
TickTock 1:dafb963c3c14 13 //5: VSS Brown,White/Brown
TickTock 7:281df0ba57d0 14 //6: CARCAN-H Green --> VP230b:7
TickTock 1:dafb963c3c14 15 //7:
TickTock 1:dafb963c3c14 16 //8: 12V-SW Orange,White/Orange
TickTock 1:dafb963c3c14 17 //9:
TickTock 1:dafb963c3c14 18 //10:
TickTock 1:dafb963c3c14 19 //11: AVCAN-H Blue
TickTock 7:281df0ba57d0 20 //12: EVCAN-L White/Grey --> VP230a:6
TickTock 7:281df0ba57d0 21 //13: EVCAN-H Grey --> VP230a:7
TickTock 7:281df0ba57d0 22 //14: CARCAN-L White/Green --> VP230b:6
TickTock 7:281df0ba57d0 23 //15: 6V
TickTock 7:281df0ba57d0 24 //16: 12V-AON Red/Blue,Blue/Red ----|<---- LPC1768:2
TickTock 7:281df0ba57d0 25 //note 1: pins 4 & 5 longer
TickTock 7:281df0ba57d0 26 //note 2: pins 12 & 13 next to key
TickTock 7:281df0ba57d0 27 //note 3: pins 1 & 9 on right side looking into male connector with key on bottom
TickTock 1:dafb963c3c14 28
TickTock 8:6872945e8e91 29 //VP230{a,b}
TickTock 1:dafb963c3c14 30 //1:D
TickTock 1:dafb963c3c14 31 //2:GND
TickTock 1:dafb963c3c14 32 //3:VCC
TickTock 1:dafb963c3c14 33 //4:R
TickTock 1:dafb963c3c14 34 //5:Vref
TickTock 7:281df0ba57d0 35 //6:CANL --> OBD:12,14
TickTock 7:281df0ba57d0 36 //7:CANH --> OBD:13,6
TickTock 7:281df0ba57d0 37 //8:RS --> LPC1768:27,28
TickTock 0:1596b8644523 38
TickTock 0:1596b8644523 39 //LPC1768
TickTock 8:6872945e8e91 40 //1: VSS 6V
TickTock 8:6872945e8e91 41 //2: VIN (4.5-9V supply) ---->|---- OBD:16
TickTock 0:1596b8644523 42 //3: NC:VB
TickTock 0:1596b8644523 43 //4: NC:nR
TickTock 0:1596b8644523 44 //5: SPI:MOSI --> 6:SDRAM:DI
TickTock 0:1596b8644523 45 //6: SPI:MISO --> 2:SDRAM:DO
TickTock 0:1596b8644523 46 //7: SPI:SCLK --> 4:SDRAM:SCLK
TickTock 0:1596b8644523 47 //8: CS --> 7:SDRAM:CS
TickTock 1:dafb963c3c14 48 //9: CAN1:RX --> 4:CAN1:R
TickTock 1:dafb963c3c14 49 //10: CAN1:TX --> 1:CAN1:D
TickTock 8:6872945e8e91 50 //11: NC:RS --> 4:LCD:RS
TickTock 8:6872945e8e91 51 //12: NC:E --> 6:LCD:E
TickTock 8:6872945e8e91 52 //13: NC:D4 --> 11:LCD:D4
TickTock 8:6872945e8e91 53 //14: NC:D5 --> 12:LCD:D5
TickTock 8:6872945e8e91 54 //15: NC:D6 --> 13:LCD:D6
TickTock 8:6872945e8e91 55 //16: NC:D7 --> 14:LCD:D7
TickTock 0:1596b8644523 56 //17: CD --> 1:SDRAM:CD
TickTock 8:6872945e8e91 57 //18: NC:MON12V --> 4K to 12V, 1K to VSS (To be implemented)
TickTock 0:1596b8644523 58 //19: PB2
TickTock 0:1596b8644523 59 //20: PB1
TickTock 8:6872945e8e91 60 //21: NC:Spkr+
TickTock 8:6872945e8e91 61 //22: NC:Spkr- (optional complimentary output for more volume)
TickTock 0:1596b8644523 62 //23: NC:pwm
TickTock 8:6872945e8e91 63 //24: NC:LEDBLU --> 18:LCD:BLU (only used for tri-color displays)
TickTock 8:6872945e8e91 64 //25: NC:LEDGRN --> 17:LCD:GRN (only used for tri-color displays)
TickTock 8:6872945e8e91 65 //26: NC:LEDRED --> 16:LCD:RED
TickTock 0:1596b8644523 66 //27: CAN1:Sleep --> 8:CAN1:RS
TickTock 0:1596b8644523 67 //28: CAN2:Sleep --> 8:CAN2:RS
TickTock 1:dafb963c3c14 68 //29: CAN2:TX --> 1:CAN2:D
TickTock 1:dafb963c3c14 69 //30: CAN2:RX --> 4:CAN2:R
TickTock 0:1596b8644523 70 //31: NC:USB_D+
TickTock 0:1596b8644523 71 //32: NC:USB_D-
TickTock 0:1596b8644523 72 //33: NC:Eth_TD+
TickTock 0:1596b8644523 73 //34: NC:Eth_TD-
TickTock 0:1596b8644523 74 //35: NC:Eth_RD+
TickTock 0:1596b8644523 75 //36: NC:Eth_RD-
TickTock 0:1596b8644523 76 //37: NC:IF+
TickTock 0:1596b8644523 77 //38: NC:IF-
TickTock 1:dafb963c3c14 78 //39: NC:5Vout (only available when connected as USB device)
TickTock 0:1596b8644523 79 //40: VCC3.3
TickTock 0:1596b8644523 80
TickTock 8:6872945e8e91 81 #include "mbed.h"
TickTock 8:6872945e8e91 82 #include "CAN.h"
TickTock 8:6872945e8e91 83 #include "SDHCFileSystem.h"
TickTock 11:d97071bf877b 84 #include "PowerControl/PowerControl.h"
TickTock 11:d97071bf877b 85 #include "PowerControl/EthernetPowerControl.h"
TickTock 8:6872945e8e91 86
TickTock 8:6872945e8e91 87 #define upLine "\033[1A"
TickTock 8:6872945e8e91 88 #define maxBufLen 2048
TickTock 8:6872945e8e91 89 #define canTimeout 5
TickTock 17:f0209f149b3e 90 #define maxFileNum 100
TickTock 8:6872945e8e91 91
TickTock 1:dafb963c3c14 92 void Log (char *message);
TickTock 1:dafb963c3c14 93 void LogErr (char *message);
TickTock 6:594d9717e609 94 extern "C" void mbed_reset();
TickTock 1:dafb963c3c14 95
TickTock 1:dafb963c3c14 96 time_t seconds ;
TickTock 9:8396b76e42fc 97 DigitalIn CD(p17);
TickTock 9:8396b76e42fc 98 DigitalIn PB1( p20 );
TickTock 1:dafb963c3c14 99 SDFileSystem sd(p5, p6, p7, p8, "sd" ); // SDFileSystem::SDFileSystem(PinName mosi, PinName miso, PinName sclk, PinName cs, const char* name)
TickTock 1:dafb963c3c14 100 Timer timer;
TickTock 0:1596b8644523 101 DigitalOut led1(LED1);
TickTock 0:1596b8644523 102 DigitalOut led2(LED2);
TickTock 0:1596b8644523 103 DigitalOut led3(LED3);
TickTock 0:1596b8644523 104 DigitalOut led4(LED4);
TickTock 1:dafb963c3c14 105 CAN can1(p9, p10); // CAN1 uses pins 9 and 10 (rx, tx) and pin 27 (rs)
TickTock 2:55b2357f0cf9 106 DigitalOut can1_SleepMode(p27); // Use pin 27 to control the sleep mode of can1
TickTock 1:dafb963c3c14 107 CAN can2(p30, p29); // CAN2 uses pins 30 and 29 (rx, tx) and pin 28 (rs)
TickTock 2:55b2357f0cf9 108 DigitalOut can2_SleepMode(p28); // Use pin 28 to control the sleep mode of can2
TickTock 3:51134a275609 109 bool logOpen = false;
TickTock 2:55b2357f0cf9 110 FILE *file;
TickTock 17:f0209f149b3e 111 FILE *fTemp;
TickTock 17:f0209f149b3e 112 char fileName[35] = "" ;
TickTock 4:fb373a391155 113 char writeBuffer[maxBufLen][13];
TickTock 13:544b15b00c2d 114 char c;
TickTock 12:7cd4e9303165 115 char sTemp[35] ;
TickTock 11:d97071bf877b 116 volatile int writePointer = 0;
TickTock 11:d97071bf877b 117 volatile int secsIdle = canTimeout;
TickTock 11:d97071bf877b 118 volatile bool canIdle = true;
TickTock 10:663bff0a6144 119 Serial pc(USBTX, USBRX);
TickTock 0:1596b8644523 120
TickTock 2:55b2357f0cf9 121 extern "C" void RTC_IRQHandler() {
TickTock 9:8396b76e42fc 122 timer.reset(); // zero ms at the-seconds-tic
TickTock 10:663bff0a6144 123 canIdle=(++secsIdle>canTimeout);
TickTock 8:6872945e8e91 124 LPC_RTC->ILR |= (1<<0); // clear interrupt to prepare for next
TickTock 2:55b2357f0cf9 125 }
TickTock 2:55b2357f0cf9 126
TickTock 2:55b2357f0cf9 127 extern "C" void RTC_Init (void) {
TickTock 2:55b2357f0cf9 128 LPC_RTC->ILR=0x00; // set up the RTC interrupts
TickTock 2:55b2357f0cf9 129 LPC_RTC->CIIR=0x01; // interrupts each second
TickTock 8:6872945e8e91 130 LPC_RTC->CCR = 0x01; // Clock enable
TickTock 9:8396b76e42fc 131 //NVIC_SetPriority( RTC_IRQn, 10 );
TickTock 2:55b2357f0cf9 132 NVIC_EnableIRQ( RTC_IRQn );
TickTock 2:55b2357f0cf9 133 }
TickTock 2:55b2357f0cf9 134
TickTock 2:55b2357f0cf9 135 unsigned short getTimeStamp() {
TickTock 2:55b2357f0cf9 136 int msec = timer.read_ms() ; // read ms from the timer
TickTock 2:55b2357f0cf9 137 unsigned long secs = time(NULL); // seconds past 12:00:00 AM 1 Jan 1900
TickTock 2:55b2357f0cf9 138 int isecs = secs%60 ; // modulo 60 for 0-59 seconds from RTC
TickTock 2:55b2357f0cf9 139 return ((isecs<<10)+msec) ; // return the two byte time stamp
TickTock 1:dafb963c3c14 140 }
TickTock 1:dafb963c3c14 141
TickTock 2:55b2357f0cf9 142 void readLog (){
TickTock 2:55b2357f0cf9 143 unsigned char c;
TickTock 2:55b2357f0cf9 144 int i=0;
TickTock 3:51134a275609 145 char lastMsgNum[]={0,0};
TickTock 3:51134a275609 146 char curMsgNum[]={0,0};
TickTock 3:51134a275609 147 char canNum=0;
TickTock 2:55b2357f0cf9 148 pc.printf("printing file\n");
TickTock 2:55b2357f0cf9 149 file = fopen(fileName, "r");
TickTock 2:55b2357f0cf9 150 if (file == NULL) {
TickTock 2:55b2357f0cf9 151 pc.printf("no file found\n");
TickTock 1:dafb963c3c14 152 }
TickTock 2:55b2357f0cf9 153 while (!feof(file)) {
TickTock 2:55b2357f0cf9 154 c=fgetc(file);
TickTock 2:55b2357f0cf9 155 pc.printf("%02x ",c);
TickTock 3:51134a275609 156 if (i==0){
TickTock 3:51134a275609 157 canNum=c;
TickTock 3:51134a275609 158 }else if (i==5){
TickTock 3:51134a275609 159 curMsgNum[canNum]=c;
TickTock 2:55b2357f0cf9 160 }
TickTock 2:55b2357f0cf9 161 if (++i>12) {
TickTock 3:51134a275609 162 if (curMsgNum[canNum]>(lastMsgNum[canNum]+1)) {
TickTock 2:55b2357f0cf9 163 pc.printf(" ***");
TickTock 2:55b2357f0cf9 164 }
TickTock 3:51134a275609 165 lastMsgNum[canNum]=curMsgNum[canNum];
TickTock 2:55b2357f0cf9 166 pc.printf("\n");
TickTock 2:55b2357f0cf9 167 i=0;
TickTock 2:55b2357f0cf9 168 }
TickTock 2:55b2357f0cf9 169 }
TickTock 10:663bff0a6144 170 pc.printf("\n\n");
TickTock 2:55b2357f0cf9 171 fclose(file);
TickTock 2:55b2357f0cf9 172 }
TickTock 1:dafb963c3c14 173
TickTock 2:55b2357f0cf9 174 void logCan (char mtype, CANMessage canRXmsg) {
TickTock 2:55b2357f0cf9 175 unsigned short ts = getTimeStamp();
TickTock 11:d97071bf877b 176 unsigned long secs = time(NULL); // seconds past 12:00:00 AM 1 Jan 1900
TickTock 9:8396b76e42fc 177 writeBuffer[writePointer][0]=mtype;
TickTock 11:d97071bf877b 178 writeBuffer[writePointer][1]=((secs%60)<<2)+((ts&0x300)>>8);
TickTock 9:8396b76e42fc 179 writeBuffer[writePointer][2]=ts&0xff;
TickTock 9:8396b76e42fc 180 writeBuffer[writePointer][3]=canRXmsg.id&0xff;
TickTock 9:8396b76e42fc 181 writeBuffer[writePointer][4]=(canRXmsg.id>>8)+(canRXmsg.len<<4);
TickTock 2:55b2357f0cf9 182 for (int i = 5; i<13; i++){
TickTock 9:8396b76e42fc 183 writeBuffer[writePointer][i]=canRXmsg.data[i-5];
TickTock 0:1596b8644523 184 }
TickTock 9:8396b76e42fc 185 if (++writePointer >= maxBufLen) {
TickTock 9:8396b76e42fc 186 writePointer = 0;
TickTock 4:fb373a391155 187 led4 = !led4;
TickTock 4:fb373a391155 188 }
TickTock 1:dafb963c3c14 189 }
TickTock 0:1596b8644523 190
TickTock 18:a4cf0547bfc2 191 void logTS () {
TickTock 18:a4cf0547bfc2 192 CANMessage tsMsg;
TickTock 18:a4cf0547bfc2 193 unsigned long secs = time(NULL); // seconds past 12:00:00 AM 1 Jan 1900
TickTock 18:a4cf0547bfc2 194 tsMsg.id=0xfff;
TickTock 18:a4cf0547bfc2 195 tsMsg.len=0xf;
TickTock 18:a4cf0547bfc2 196 tsMsg.data[0]=secs&0xff;
TickTock 18:a4cf0547bfc2 197 tsMsg.data[1]=(secs>>8)&0xff;
TickTock 18:a4cf0547bfc2 198 tsMsg.data[2]=(secs>>16)&0xff;
TickTock 18:a4cf0547bfc2 199 tsMsg.data[3]=secs>>24;
TickTock 18:a4cf0547bfc2 200 tsMsg.data[4]=0xff;
TickTock 18:a4cf0547bfc2 201 tsMsg.data[5]=0xff;
TickTock 18:a4cf0547bfc2 202 tsMsg.data[6]=0xff;
TickTock 18:a4cf0547bfc2 203 tsMsg.data[7]=0xff;
TickTock 18:a4cf0547bfc2 204 logCan(0,tsMsg);
TickTock 18:a4cf0547bfc2 205 }
TickTock 0:1596b8644523 206 void recieve1() {
TickTock 2:55b2357f0cf9 207 CANMessage msg1;
TickTock 9:8396b76e42fc 208 secsIdle=0; // reset deadman switch
TickTock 0:1596b8644523 209 can1.read(msg1);
TickTock 11:d97071bf877b 210 if(logOpen)
TickTock 11:d97071bf877b 211 logCan(1, msg1);
TickTock 11:d97071bf877b 212 led1 = !led1;
TickTock 0:1596b8644523 213 }
TickTock 2:55b2357f0cf9 214
TickTock 0:1596b8644523 215 void recieve2() {
TickTock 2:55b2357f0cf9 216 CANMessage msg2;
TickTock 9:8396b76e42fc 217 secsIdle=0; // reset deadman switch
TickTock 0:1596b8644523 218 can2.read(msg2);
TickTock 11:d97071bf877b 219 if(logOpen)
TickTock 11:d97071bf877b 220 logCan(2, msg2);
TickTock 11:d97071bf877b 221 led2 = !led2;
TickTock 0:1596b8644523 222 }
TickTock 0:1596b8644523 223
TickTock 0:1596b8644523 224 int main() {
TickTock 9:8396b76e42fc 225 int readPointer=0;
TickTock 11:d97071bf877b 226 unsigned long secs;
TickTock 10:663bff0a6144 227 pc.baud(460800); // change serial interface to pc to 450800, 8N1
TickTock 7:281df0ba57d0 228 can1.frequency(500000);
TickTock 7:281df0ba57d0 229 can2.frequency(500000);
TickTock 10:663bff0a6144 230 can1_SleepMode = 1; // Monitor_only Mode
TickTock 10:663bff0a6144 231 can2_SleepMode = 1; // Monitor_only Mode
TickTock 0:1596b8644523 232 CD.mode(PullUp) ; //SDRAM Chip Detect
TickTock 2:55b2357f0cf9 233 PB1.mode(PullUp) ; //Pushbutton 1
TickTock 0:1596b8644523 234 can1.attach(&recieve1);
TickTock 0:1596b8644523 235 can2.attach(&recieve2);
TickTock 1:dafb963c3c14 236
TickTock 1:dafb963c3c14 237 timer.start() ;
TickTock 2:55b2357f0cf9 238 RTC_Init(); // start the RTC Interrupts that sync the timer
TickTock 12:7cd4e9303165 239
TickTock 12:7cd4e9303165 240 struct tm t; // pointer to a static tm structure
TickTock 12:7cd4e9303165 241
TickTock 12:7cd4e9303165 242 seconds = time(NULL);
TickTock 12:7cd4e9303165 243 t = *localtime(&seconds) ;
TickTock 14:ed5d2a503374 244 strftime(sTemp, 32, "%a %m/%d/%Y %X", &t);
TickTock 14:ed5d2a503374 245 pc.printf("\nCurrent time set to: %s\n", sTemp); // DAY MM/DD/YYYY HH:MM:SS
TickTock 14:ed5d2a503374 246 wait(1.1); // give time to sync
TickTock 14:ed5d2a503374 247
TickTock 14:ed5d2a503374 248 if (PB1==0) { //set time if pb pressed
TickTock 12:7cd4e9303165 249
TickTock 13:544b15b00c2d 250 pc.printf("\nEnter year (yyyy):");
TickTock 13:544b15b00c2d 251 pc.scanf("%s", &sTemp);
TickTock 13:544b15b00c2d 252 t.tm_year = atoi(sTemp);
TickTock 13:544b15b00c2d 253
TickTock 13:544b15b00c2d 254 pc.printf("\nEnter month (mm):");
TickTock 13:544b15b00c2d 255 pc.scanf("%2s", &sTemp);
TickTock 13:544b15b00c2d 256 t.tm_mon = atoi(sTemp);
TickTock 13:544b15b00c2d 257
TickTock 13:544b15b00c2d 258 pc.printf("\nEnter day (dd):");
TickTock 13:544b15b00c2d 259 pc.scanf("%2s", &sTemp);
TickTock 13:544b15b00c2d 260 t.tm_mday = atoi(sTemp);
TickTock 13:544b15b00c2d 261
TickTock 13:544b15b00c2d 262 pc.printf("\nEnter hour (hh):");
TickTock 13:544b15b00c2d 263 pc.scanf("%2s", &sTemp);
TickTock 13:544b15b00c2d 264 t.tm_hour = atoi(sTemp);
TickTock 13:544b15b00c2d 265
TickTock 13:544b15b00c2d 266 pc.printf("\nEnter minute (mm):");
TickTock 13:544b15b00c2d 267 pc.scanf("%2s", &sTemp);
TickTock 13:544b15b00c2d 268 t.tm_min = atoi(sTemp);
TickTock 13:544b15b00c2d 269
TickTock 13:544b15b00c2d 270 pc.printf("\nEnter seconds (ss):");
TickTock 13:544b15b00c2d 271 pc.scanf("%2s", &sTemp);
TickTock 13:544b15b00c2d 272 t.tm_sec = atoi(sTemp);
TickTock 12:7cd4e9303165 273
TickTock 12:7cd4e9303165 274 // adjust for tm structure required values
TickTock 12:7cd4e9303165 275 t.tm_year = t.tm_year - 1900;
TickTock 12:7cd4e9303165 276 t.tm_mon = t.tm_mon - 1;
TickTock 12:7cd4e9303165 277
TickTock 12:7cd4e9303165 278 // set the RTC
TickTock 12:7cd4e9303165 279 set_time(mktime(&t));
TickTock 12:7cd4e9303165 280 seconds = time(NULL);
TickTock 12:7cd4e9303165 281
TickTock 14:ed5d2a503374 282 pc.printf("\nRTC set to: " );
TickTock 12:7cd4e9303165 283 strftime(sTemp, 32, "%a %m/%d/%Y %X", localtime(&seconds));
TickTock 12:7cd4e9303165 284 pc.printf("%s\n", sTemp); // DAY MM/DD/YYYY HH:MM:SS
TickTock 12:7cd4e9303165 285 }
TickTock 1:dafb963c3c14 286
TickTock 6:594d9717e609 287 while (true) {
TickTock 6:594d9717e609 288 if(CD == 1) {
TickTock 11:d97071bf877b 289 if (!logOpen) { // Open new file if one is not already open
TickTock 11:d97071bf877b 290 int fileNum = 0;
TickTock 11:d97071bf877b 291 sprintf(fileName,"/sd/cancan%d.alc",fileNum);
TickTock 15:3ff21ce810da 292 pc.printf("Checking file %s\n",fileName);
TickTock 6:594d9717e609 293 file = fopen(fileName, "r");
TickTock 15:3ff21ce810da 294 while (!(file == NULL)) {
TickTock 11:d97071bf877b 295 fclose(file);
TickTock 15:3ff21ce810da 296 fileNum=++fileNum%maxFileNum;
TickTock 11:d97071bf877b 297 sprintf(fileName,"/sd/cancan%d.alc",fileNum);
TickTock 15:3ff21ce810da 298 pc.printf("Checking file %s\n",fileName);
TickTock 11:d97071bf877b 299 file = fopen(fileName, "r");
TickTock 15:3ff21ce810da 300 pc.printf("Checked file %s\n",fileName);
TickTock 11:d97071bf877b 301 }
TickTock 17:f0209f149b3e 302 //close and reopen for write
TickTock 17:f0209f149b3e 303 //fclose(file);
TickTock 17:f0209f149b3e 304 wait(1);
TickTock 15:3ff21ce810da 305 pc.printf("Using file %s\n",fileName);
TickTock 11:d97071bf877b 306 file = fopen(fileName, "wb");
TickTock 15:3ff21ce810da 307
TickTock 11:d97071bf877b 308 if(file==NULL){
TickTock 11:d97071bf877b 309 pc.printf("\nUnable to open canlog\n\n\n\n");
TickTock 11:d97071bf877b 310 mbed_reset();
TickTock 11:d97071bf877b 311 } else {
TickTock 11:d97071bf877b 312 logOpen = true;
TickTock 11:d97071bf877b 313 readPointer=writePointer;
TickTock 17:f0209f149b3e 314 // delete next opening (only maxFileNum files allowed on SDRAM)
TickTock 17:f0209f149b3e 315 sprintf(sTemp,"/sd/cancan%d.alc",(fileNum+1)%maxFileNum);
TickTock 17:f0209f149b3e 316 remove(sTemp);
TickTock 17:f0209f149b3e 317 fTemp = fopen(sTemp, "r");
TickTock 17:f0209f149b3e 318 if (!(fTemp == NULL)) {
TickTock 17:f0209f149b3e 319 pc.printf("Unable to delete %s\n",sTemp);
TickTock 17:f0209f149b3e 320 } else {
TickTock 17:f0209f149b3e 321 pc.printf("Removed file %s\n",sTemp);
TickTock 17:f0209f149b3e 322 }
TickTock 15:3ff21ce810da 323 pc.printf("\nStarting Can Log %s\n",fileName);
TickTock 15:3ff21ce810da 324 // write full timestamp
TickTock 18:a4cf0547bfc2 325 logTS();
TickTock 11:d97071bf877b 326 fclose(file);
TickTock 11:d97071bf877b 327 }
TickTock 11:d97071bf877b 328 } // if (!logOpen)
TickTock 9:8396b76e42fc 329 do {
TickTock 17:f0209f149b3e 330 //pc.printf("loop\n");
TickTock 10:663bff0a6144 331 if (((writePointer+maxBufLen-readPointer)%maxBufLen)>(maxBufLen/2)||canIdle||(PB1==0)) {
TickTock 10:663bff0a6144 332 // Dump buffer if > 1/2 full, canbus has stopped, or PB1 pressed
TickTock 9:8396b76e42fc 333 if (logOpen) {
TickTock 9:8396b76e42fc 334 file = fopen(fileName, "ab");
TickTock 9:8396b76e42fc 335 if (file == NULL) {
TickTock 9:8396b76e42fc 336 logOpen = false;
TickTock 9:8396b76e42fc 337 pc.printf("Failed to append log file.\n\n");
TickTock 9:8396b76e42fc 338 } else {
TickTock 9:8396b76e42fc 339 while (readPointer != writePointer) {
TickTock 9:8396b76e42fc 340 for (int j = 0; j<13; j++){
TickTock 9:8396b76e42fc 341 fprintf(file,"%c",writeBuffer[readPointer][j]);
TickTock 9:8396b76e42fc 342 }
TickTock 9:8396b76e42fc 343 if(++readPointer >= maxBufLen)
TickTock 9:8396b76e42fc 344 readPointer=0;
TickTock 9:8396b76e42fc 345 }
TickTock 9:8396b76e42fc 346 led3 = !led3;
TickTock 9:8396b76e42fc 347 fclose(file);
TickTock 9:8396b76e42fc 348 }
TickTock 10:663bff0a6144 349 } // if (logOpen)
TickTock 17:f0209f149b3e 350 } // if > 1/2 full, canbus has stopped, or PB1 pressed
TickTock 10:663bff0a6144 351 if (canIdle) { // canbus idle --> sleep to save power
TickTock 17:f0209f149b3e 352 pc.printf("Putting uC to sleep.\n");
TickTock 13:544b15b00c2d 353 //LPC_RTC->CIIR=0x00; // block RTC interrupts
TickTock 10:663bff0a6144 354 led1=0;
TickTock 10:663bff0a6144 355 led2=0;
TickTock 10:663bff0a6144 356 led3=0;
TickTock 10:663bff0a6144 357 led4=0;
TickTock 11:d97071bf877b 358 secs = time(NULL); // seconds past 12:00:00 AM 1 Jan 1900
TickTock 10:663bff0a6144 359 while (secsIdle>canTimeout)
TickTock 11:d97071bf877b 360 //DeepPowerDown();
TickTock 10:663bff0a6144 361 __wfi(); // freeze CPU and wait for interrupt (from canbus)
TickTock 18:a4cf0547bfc2 362 if (time(NULL)>(secs+3600)) {
TickTock 11:d97071bf877b 363 logOpen = false; // Start new file if asleep for more than an hour
TickTock 18:a4cf0547bfc2 364 } else { // insert timestamp on each wake
TickTock 18:a4cf0547bfc2 365 file = fopen(fileName, "ab");
TickTock 18:a4cf0547bfc2 366 logTS();
TickTock 18:a4cf0547bfc2 367 fclose(file);
TickTock 18:a4cf0547bfc2 368 }
TickTock 13:544b15b00c2d 369 //LPC_RTC->CIIR=0x01; // re-enable RTC interrupts
TickTock 9:8396b76e42fc 370 }
TickTock 17:f0209f149b3e 371 wait(0.2); // We get >2K messages per second
TickTock 11:d97071bf877b 372 } while ((PB1==1)&&(CD==1)&&logOpen); // keep going until button or SDram removed
TickTock 9:8396b76e42fc 373
TickTock 11:d97071bf877b 374 if (PB1==0) {
TickTock 11:d97071bf877b 375 led1=0;
TickTock 11:d97071bf877b 376 led2=0;
TickTock 11:d97071bf877b 377 led3=0;
TickTock 11:d97071bf877b 378 led4=0;
TickTock 11:d97071bf877b 379 pc.printf("Log stopped\n\n");
TickTock 11:d97071bf877b 380 logOpen=false;
TickTock 11:d97071bf877b 381 wait(5); // wait 5 seconds to give time to remove SDRAM if desired
TickTock 17:f0209f149b3e 382 if (PB1==0)
TickTock 17:f0209f149b3e 383 readLog(); // dump file if PB still pressed
TickTock 11:d97071bf877b 384 }
TickTock 11:d97071bf877b 385 } else {
TickTock 11:d97071bf877b 386 pc.printf("\nNo SDRAM Inserted.\n\n");
TickTock 6:594d9717e609 387 logOpen=false;
TickTock 11:d97071bf877b 388 led1=!led1;
TickTock 11:d97071bf877b 389 led2=led1;
TickTock 11:d97071bf877b 390 led3=led1;
TickTock 11:d97071bf877b 391 led4=led1;
TickTock 11:d97071bf877b 392 wait(5);
TickTock 10:663bff0a6144 393 } //if (CD==1)
TickTock 9:8396b76e42fc 394 } //while (true)
TickTock 9:8396b76e42fc 395 }
TickTock 9:8396b76e42fc 396