William Reynolds / Mbed 2 deprecated LPC_Bootloader

Dependencies:   mbed

ISP.cpp@1:0872c208795f, 2011-09-29 (annotated)

Committer:
daugihao
Date:
Thu Sep 29 11:32:52 2011 +0000
Revision:
1:0872c208795f
Parent:
0:15536fa79743
Child:
2:9e3ee0c6536b
Now no need to update main.cpp. Will load the first .lpc file it finds on the local filesystem.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
daugihao 0:15536fa79743 1 #include "mbed.h"
daugihao 0:15536fa79743 2 #include "LPC.h"
daugihao 0:15536fa79743 3
daugihao 0:15536fa79743 4 Serial pc(USBTX, USBRX);
daugihao 0:15536fa79743 5 LocalFileSystem local("fs");
daugihao 0:15536fa79743 6
daugihao 1:0872c208795f 7 int SerialBuffered::ProgramFile() {
daugihao 0:15536fa79743 8 sum20 = 0; readAll = false; bytesfilled=45; lines=1; firstencode = true;
daugihao 0:15536fa79743 9 char str0[] = "0"; //Command success string
daugihao 1:0872c208795f 10 char strRAM[40];
daugihao 0:15536fa79743 11
daugihao 0:15536fa79743 12 //Following arrays contain addresses and the size of the addresses
daugihao 0:15536fa79743 13 int sector[30] = {4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 4096, 32768, 32768, 32768, 32768, 32768, 32768, 32768, 32768, 32768, 32768, 32768, 32768, 32768, 32768};
daugihao 0:15536fa79743 14 int startadd[30] = {0x0, 0x1000, 0x2000, 0x3000, 0x4000, 0x5000, 0x6000, 0x7000, 0x8000, 0x9000, 0xA000, 0xB000, 0xC000, 0xD000, 0xE000, 0xF000, 0x10000, 0x18000, 0x20000, 0x28000, 0x30000, 0x38000, 0x40000, 0x48000, 0x50000, 0x58000, 0x60000, 0x68000, 0x70000, 0x78000};
daugihao 0:15536fa79743 15
daugihao 0:15536fa79743 16 pc.printf("**** LPC1xxx Flash Bootloader ****\n\n\r");
daugihao 0:15536fa79743 17 if(CheckTargetPresent()==0) {
daugihao 0:15536fa79743 18 pc.printf("ERROR: Communication failed with board. Ensure board reset and P2.10 pulled low before running mbed program!\r\n\n");
daugihao 0:15536fa79743 19 exit(0);
daugihao 0:15536fa79743 20 }
daugihao 0:15536fa79743 21
daugihao 1:0872c208795f 22 sprintf(strRAM, "W %d 1024", RAM);
daugihao 1:0872c208795f 23
daugihao 1:0872c208795f 24 DIR *d = opendir("/fs"); // Opens the root directory of the local file system
daugihao 1:0872c208795f 25 struct dirent *p;
daugihao 1:0872c208795f 26
daugihao 1:0872c208795f 27 fname[0] = 0;
daugihao 1:0872c208795f 28 while((p = readdir(d)) != NULL) { // Print the names of the files in the local file system
daugihao 1:0872c208795f 29 if ( strcmp(p->d_name+strlen(p->d_name)-3,"LPC") == 0 )
daugihao 1:0872c208795f 30 {
daugihao 1:0872c208795f 31 strcpy(fname,"/fs/");
daugihao 1:0872c208795f 32 strcat(fname,p->d_name);
daugihao 1:0872c208795f 33 }
daugihao 1:0872c208795f 34 }
daugihao 1:0872c208795f 35
daugihao 0:15536fa79743 36 f = fopen(fname, "r"); //Opens the binary file for reading
daugihao 0:15536fa79743 37 if (f == NULL) {
daugihao 0:15536fa79743 38 pc.printf("ERROR: File not found. Ensure file exists in the mbed's local filesystem and is spelt correctly in the main.cpp\n\n\r");
daugihao 0:15536fa79743 39 exit(0);
daugihao 0:15536fa79743 40 return 1;
daugihao 0:15536fa79743 41 }
daugihao 0:15536fa79743 42 else pc.printf("%s opened successfully\n\n\r", fname);
daugihao 0:15536fa79743 43
daugihao 0:15536fa79743 44 TargetSendStringAndCR(strRAM);
daugihao 0:15536fa79743 45 readBytes(buf, 3);
daugihao 0:15536fa79743 46 if ( strncmp(buf,str0, 1) != 0 )
daugihao 0:15536fa79743 47 return 0;
daugihao 0:15536fa79743 48
daugihao 0:15536fa79743 49 pc.printf("Writing to chip (may take a couple of minutes)");
daugihao 0:15536fa79743 50
daugihao 0:15536fa79743 51 FirstEncode();
daugihao 0:15536fa79743 52 TargetSendString(uuline);
daugihao 0:15536fa79743 53 fclose(f);
daugihao 0:15536fa79743 54 f = fopen(fname, "r");
daugihao 0:15536fa79743 55 fseek(f, 45, SEEK_SET); //Skip forward past the 45 bytes already encoded in FirstEncode()
daugihao 0:15536fa79743 56 remove("/fs/delete.bin"); //Remove temporary file
daugihao 0:15536fa79743 57
daugihao 0:15536fa79743 58 int summation=0;
daugihao 0:15536fa79743 59 for (int i=0; i<30; i++) { //Works out number of sectors required and compares it with number available
daugihao 0:15536fa79743 60 summation+=sector[i];
daugihao 0:15536fa79743 61 if (summation>=filesize) {
daugihao 0:15536fa79743 62 maxsector = i;
daugihao 0:15536fa79743 63 break;
daugihao 0:15536fa79743 64 }
daugihao 0:15536fa79743 65 }
daugihao 0:15536fa79743 66 if (lastSector<maxsector) {
daugihao 0:15536fa79743 67 pc.printf("ERROR: File size too large for available FLASH memory\n\r");
daugihao 0:15536fa79743 68 exit(0);
daugihao 0:15536fa79743 69 }
daugihao 0:15536fa79743 70
daugihao 0:15536fa79743 71 int totalloaded=0;
daugihao 0:15536fa79743 72 for (int b=0; b<=maxsector; b++) {
daugihao 0:15536fa79743 73 int data = sector[b];
daugihao 0:15536fa79743 74 while (data>0) {
daugihao 0:15536fa79743 75 SectorFill(startadd[b]+(sector[b]-data));
daugihao 0:15536fa79743 76 data-=1024;
daugihao 0:15536fa79743 77 totalloaded+=1024;
daugihao 0:15536fa79743 78 if (totalloaded>=filesize)
daugihao 0:15536fa79743 79 break;
daugihao 0:15536fa79743 80 }
daugihao 0:15536fa79743 81 }
daugihao 0:15536fa79743 82
daugihao 0:15536fa79743 83 fclose(f);
daugihao 0:15536fa79743 84 pc.printf("\n\n\rFLASH COMPLETED!\n\n\r");
daugihao 0:15536fa79743 85 return 0;
daugihao 0:15536fa79743 86 }
daugihao 0:15536fa79743 87
daugihao 0:15536fa79743 88 int SerialBuffered::SectorFill(int add) {
daugihao 0:15536fa79743 89 char sendStr[64];
daugihao 0:15536fa79743 90 char str0[] = "0";
daugihao 1:0872c208795f 91 char strRAM[40];
daugihao 1:0872c208795f 92 sprintf(strRAM, "W %d 1024", RAM);
daugihao 0:15536fa79743 93
daugihao 0:15536fa79743 94 if (!firstencode) {
daugihao 0:15536fa79743 95 TargetSendStringAndCR(strRAM);
daugihao 0:15536fa79743 96 readBytes(buf, 3);
daugihao 0:15536fa79743 97 }
daugihao 0:15536fa79743 98 firstencode = false;
daugihao 0:15536fa79743 99
daugihao 0:15536fa79743 100 while (bytesfilled<1024) {
daugihao 0:15536fa79743 101 if (bytesfilled>=990) { //If not enough room for a full UUEncoded line use EndUUEncode()
daugihao 0:15536fa79743 102 EndUUEncode();
daugihao 0:15536fa79743 103 TargetSendString(enduuline);
daugihao 1:0872c208795f 104 sprintf(sendStr, "%d", sum20); //Checksum
daugihao 0:15536fa79743 105 TargetSendStringAndCR(sendStr);
daugihao 1:0872c208795f 106 readBytes(buf, 4);
daugihao 1:0872c208795f 107 sum20=0; lines=0;
daugihao 0:15536fa79743 108 pc.printf(".");
daugihao 0:15536fa79743 109 break;
daugihao 0:15536fa79743 110 }
daugihao 0:15536fa79743 111 UUEncode();
daugihao 0:15536fa79743 112 TargetSendString(uuline);
daugihao 0:15536fa79743 113 bytesfilled+=45;
daugihao 0:15536fa79743 114 lines++;
daugihao 0:15536fa79743 115 if (lines==20) {
daugihao 1:0872c208795f 116 sprintf(sendStr, "%d", sum20); //Checksum
daugihao 0:15536fa79743 117 TargetSendStringAndCR(sendStr);
daugihao 0:15536fa79743 118 readBytes(buf, 4);
daugihao 0:15536fa79743 119 sum20=0; lines=0;
daugihao 0:15536fa79743 120 }
daugihao 0:15536fa79743 121 }
daugihao 0:15536fa79743 122
daugihao 0:15536fa79743 123 sprintf(sendStr, "P 0 %d", lastSector); //Fills the sendStr string with the prepare function specific to the chip as specified in the switch function
daugihao 0:15536fa79743 124 TargetSendStringAndCR(sendStr); //Prepares the Flash for writing to
daugihao 0:15536fa79743 125 readBytes(buf, 3);
daugihao 0:15536fa79743 126 if (strncmp(buf,str0,1)!=0)
daugihao 0:15536fa79743 127 return 0;
daugihao 0:15536fa79743 128
daugihao 1:0872c208795f 129 sprintf(sendStr, "C %d %d 1024", add, RAM); //Copies data from the RAM to FLASH
daugihao 0:15536fa79743 130 TargetSendStringAndCR(sendStr);
daugihao 0:15536fa79743 131 readBytes(buf, 3);
daugihao 0:15536fa79743 132 bytesfilled = 0; lines=0; sum20=0;
daugihao 0:15536fa79743 133 return 0;
daugihao 0:15536fa79743 134 }
daugihao 0:15536fa79743 135
daugihao 0:15536fa79743 136 int SerialBuffered::CheckTargetPresent() { //Synchronises the board with the mbed and prepares the RAM for writing to
daugihao 0:15536fa79743 137 char strQn[] = "?";
daugihao 0:15536fa79743 138 char str0[] = "0";
daugihao 0:15536fa79743 139 char strSpeed[] = "4000";
daugihao 0:15536fa79743 140 char strJ[] = "J";
daugihao 0:15536fa79743 141 char strEcho[] = "A 0";
daugihao 0:15536fa79743 142 char strSync[] = "Synchronized";
daugihao 0:15536fa79743 143 char strOk[] = "OK";
daugihao 0:15536fa79743 144 char strUnlock[] = "U 23130";
daugihao 0:15536fa79743 145 char sendStr[64];
daugihao 0:15536fa79743 146
daugihao 0:15536fa79743 147 TargetSendString(strQn); //Sends a question mark and looks for "Synchronized" (wish it was spelt with an 's') to be returned
daugihao 0:15536fa79743 148 readBytes(buf, 14);
daugihao 0:15536fa79743 149 if (strncmp(buf,strSync, 12) != 0 )
daugihao 0:15536fa79743 150 return 0;
daugihao 0:15536fa79743 151 TargetSendStringAndCR(strSync); //Sends "Synchronized" back and looks for "OK" to be returned
daugihao 0:15536fa79743 152 readBytes(buf, 17);
daugihao 0:15536fa79743 153 if (strcspn(buf,strOk) == 17 )
daugihao 0:15536fa79743 154 return 0;
daugihao 0:15536fa79743 155
daugihao 0:15536fa79743 156 TargetSendStringAndCR(strSpeed); //Sends "0" and waits for "OK" to be returned
daugihao 0:15536fa79743 157 readBytes(buf, 5+strlen(strSpeed));
daugihao 0:15536fa79743 158 if ( strcspn(buf,strOk) == 5+strlen(strSpeed) )
daugihao 0:15536fa79743 159 return 0;
daugihao 0:15536fa79743 160
daugihao 0:15536fa79743 161 TargetSendStringAndCR(strEcho);
daugihao 0:15536fa79743 162 readBytes(buf,7);
daugihao 0:15536fa79743 163 if (strcspn(buf,str0) == 7 )
daugihao 0:15536fa79743 164 return 0;
daugihao 0:15536fa79743 165
daugihao 0:15536fa79743 166 TargetSendStringAndCR(strJ); //Sends "J" (ID code request) and reads the returned int
daugihao 0:15536fa79743 167 readBytes(buf, 3);
daugihao 0:15536fa79743 168 if (strncmp(buf,str0,1) != 0 )
daugihao 0:15536fa79743 169 return 0;
daugihao 0:15536fa79743 170 readBytes(buf, 11);
daugihao 0:15536fa79743 171 for (int i=0; i<9; i++)
daugihao 0:15536fa79743 172 id = (id*10)+buf[i]-'0';
daugihao 0:15536fa79743 173
daugihao 1:0872c208795f 174 int finish = IDCheck(id);
daugihao 0:15536fa79743 175 pc.printf("Chip to bootload: %s\n\r", strChipType);
daugihao 1:0872c208795f 176 if (finish==2) exit(0);
daugihao 0:15536fa79743 177
daugihao 0:15536fa79743 178 TargetSendStringAndCR(strUnlock); //Unlocks the Flash for writing to
daugihao 0:15536fa79743 179 readBytes(buf, 3);
daugihao 0:15536fa79743 180 if ( strncmp(buf,str0,1) != 0 )
daugihao 0:15536fa79743 181 return 0;
daugihao 0:15536fa79743 182
daugihao 0:15536fa79743 183 sprintf(sendStr, "P 0 %d", lastSector); //Fills the sendStr string with the prepare function specific to the chip as specified in the switch function
daugihao 0:15536fa79743 184 TargetSendStringAndCR(sendStr); //Prepares the Flash for writing to
daugihao 0:15536fa79743 185 readBytes(buf, 3);
daugihao 0:15536fa79743 186 if ( strncmp(buf,str0,1) != 0 )
daugihao 0:15536fa79743 187 return 0;
daugihao 0:15536fa79743 188
daugihao 0:15536fa79743 189 sprintf(sendStr, "E 0 %d", lastSector);
daugihao 0:15536fa79743 190 TargetSendStringAndCR(sendStr); //Erases the Flash completely, ready to be loaded
daugihao 0:15536fa79743 191 readBytes(buf, 3);
daugihao 0:15536fa79743 192 if ( strncmp(buf,str0,1) != 0 )
daugihao 0:15536fa79743 193 return 0;
daugihao 0:15536fa79743 194
daugihao 0:15536fa79743 195 pc.printf("Ready to write to chip...\n\r");
daugihao 0:15536fa79743 196 return 1;
daugihao 0:15536fa79743 197 }