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| daugihao |
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1
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#include "mbed.h"
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| daugihao |
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2
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#include "LPC.h"
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3
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4
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Serial pc(USBTX, USBRX);
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5
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LocalFileSystem local("fs");
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6
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7
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int SerialBuffered::ProgramFile(char *fname) {
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8
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sum20 = 0; readAll = false; bytesfilled=45; lines=1; firstencode = true;
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9
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char str0[] = "0"; //Command success string
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10
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char strRAM[] = "W 268435968 1024"; //Command to state that the following 1024 bytes should be written to RAM
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11
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12
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//Following arrays contain addresses and the size of the addresses
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13
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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};
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| daugihao |
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14
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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};
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15
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16
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pc.printf("**** LPC1xxx Flash Bootloader ****\n\n\r");
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17
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if(CheckTargetPresent()==0) {
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18
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pc.printf("ERROR: Communication failed with board. Ensure board reset and P2.10 pulled low before running mbed program!\r\n\n");
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19
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exit(0);
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20
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}
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21
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22
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f = fopen(fname, "r"); //Opens the binary file for reading
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23
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if (f == NULL) {
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24
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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");
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exit(0);
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return 1;
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27
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}
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else pc.printf("%s opened successfully\n\n\r", fname);
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29
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30
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TargetSendStringAndCR(strRAM);
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31
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readBytes(buf, 3);
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32
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if ( strncmp(buf,str0, 1) != 0 )
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return 0;
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34
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35
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pc.printf("Writing to chip (may take a couple of minutes)");
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36
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FirstEncode();
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38
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TargetSendString(uuline);
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39
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fclose(f);
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f = fopen(fname, "r");
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41
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fseek(f, 45, SEEK_SET); //Skip forward past the 45 bytes already encoded in FirstEncode()
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remove("/fs/delete.bin"); //Remove temporary file
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43
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int summation=0;
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45
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for (int i=0; i<30; i++) { //Works out number of sectors required and compares it with number available
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46
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summation+=sector[i];
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47
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if (summation>=filesize) {
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48
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maxsector = i;
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break;
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}
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}
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if (lastSector<maxsector) {
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pc.printf("ERROR: File size too large for available FLASH memory\n\r");
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exit(0);
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}
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int totalloaded=0;
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for (int b=0; b<=maxsector; b++) {
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int data = sector[b];
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while (data>0) {
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SectorFill(startadd[b]+(sector[b]-data));
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data-=1024;
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totalloaded+=1024;
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64
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if (totalloaded>=filesize)
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65
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break;
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66
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}
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}
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68
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fclose(f);
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70
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pc.printf("\n\n\rFLASH COMPLETED!\n\n\r");
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71
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return 0;
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72
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}
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73
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74
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int SerialBuffered::SectorFill(int add) {
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char strRAM[] = "W 268435968 1024";
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char sendStr[64];
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char str0[] = "0";
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78
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79
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if (!firstencode) {
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80
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TargetSendStringAndCR(strRAM);
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81
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readBytes(buf, 3);
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}
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firstencode = false;
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while (bytesfilled<1024) {
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86
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if (bytesfilled>=990) { //If not enough room for a full UUEncoded line use EndUUEncode()
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EndUUEncode();
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88
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TargetSendString(enduuline);
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sprintf(sendStr, "%d\0", sum20);
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90
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TargetSendStringAndCR(sendStr);
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readBytes(buf, 10);
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pc.printf(".");
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break;
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}
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UUEncode();
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TargetSendString(uuline);
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97
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bytesfilled+=45;
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98
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lines++;
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99
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if (lines==20) {
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100
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sprintf(sendStr, "%d\0", sum20); //Checksum
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101
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TargetSendStringAndCR(sendStr);
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102
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readBytes(buf, 4);
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103
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sum20=0; lines=0;
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104
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}
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105
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}
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106
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| daugihao |
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107
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sprintf(sendStr, "P 0 %d", lastSector); //Fills the sendStr string with the prepare function specific to the chip as specified in the switch function
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108
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TargetSendStringAndCR(sendStr); //Prepares the Flash for writing to
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109
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readBytes(buf, 3);
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110
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if (strncmp(buf,str0,1)!=0)
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111
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return 0;
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112
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113
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sprintf(sendStr, "C %d 268435968 1024", add); //Copies data from the RAM to FLASH
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114
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TargetSendStringAndCR(sendStr);
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115
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readBytes(buf, 3);
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116
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bytesfilled = 0; lines=0; sum20=0;
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117
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return 0;
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118
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}
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119
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120
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int SerialBuffered::CheckTargetPresent() { //Synchronises the board with the mbed and prepares the RAM for writing to
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121
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char strQn[] = "?";
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122
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char str0[] = "0";
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123
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char strSpeed[] = "4000";
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124
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char strJ[] = "J";
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125
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char strEcho[] = "A 0";
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126
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char strSync[] = "Synchronized";
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127
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char strOk[] = "OK";
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128
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char strUnlock[] = "U 23130";
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129
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char sendStr[64];
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| daugihao |
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130
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131
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TargetSendString(strQn); //Sends a question mark and looks for "Synchronized" (wish it was spelt with an 's') to be returned
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132
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readBytes(buf, 14);
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133
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if (strncmp(buf,strSync, 12) != 0 )
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134
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return 0;
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135
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TargetSendStringAndCR(strSync); //Sends "Synchronized" back and looks for "OK" to be returned
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136
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readBytes(buf, 17);
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137
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if (strcspn(buf,strOk) == 17 )
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138
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return 0;
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139
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140
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TargetSendStringAndCR(strSpeed); //Sends "0" and waits for "OK" to be returned
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141
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readBytes(buf, 5+strlen(strSpeed));
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| daugihao |
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142
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if ( strcspn(buf,strOk) == 5+strlen(strSpeed) )
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| daugihao |
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143
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return 0;
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| daugihao |
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144
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| daugihao |
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145
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TargetSendStringAndCR(strEcho);
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| daugihao |
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146
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readBytes(buf,7);
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| daugihao |
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147
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if (strcspn(buf,str0) == 7 )
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| daugihao |
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148
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return 0;
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| daugihao |
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149
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| daugihao |
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150
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TargetSendStringAndCR(strJ); //Sends "J" (ID code request) and reads the returned int
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| daugihao |
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151
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readBytes(buf, 3);
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| daugihao |
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152
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if (strncmp(buf,str0,1) != 0 )
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| daugihao |
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153
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return 0;
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| daugihao |
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154
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readBytes(buf, 11);
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155
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for (int i=0; i<9; i++)
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156
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id = (id*10)+buf[i]-'0';
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| daugihao |
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157
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158
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IDCheck(id);
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| daugihao |
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159
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pc.printf("Chip to bootload: %s\n\r", strChipType);
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| daugihao |
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160
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| daugihao |
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161
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TargetSendStringAndCR(strUnlock); //Unlocks the Flash for writing to
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162
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readBytes(buf, 3);
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| daugihao |
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163
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if ( strncmp(buf,str0,1) != 0 )
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| daugihao |
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164
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return 0;
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| daugihao |
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165
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| daugihao |
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166
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sprintf(sendStr, "P 0 %d", lastSector); //Fills the sendStr string with the prepare function specific to the chip as specified in the switch function
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167
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TargetSendStringAndCR(sendStr); //Prepares the Flash for writing to
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| daugihao |
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168
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readBytes(buf, 3);
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| daugihao |
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169
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if ( strncmp(buf,str0,1) != 0 )
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| daugihao |
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170
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return 0;
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171
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172
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sprintf(sendStr, "E 0 %d", lastSector);
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173
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TargetSendStringAndCR(sendStr); //Erases the Flash completely, ready to be loaded
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| daugihao |
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174
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readBytes(buf, 3);
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| daugihao |
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175
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if ( strncmp(buf,str0,1) != 0 )
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| daugihao |
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176
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return 0;
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177
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| daugihao |
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178
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pc.printf("Ready to write to chip...\n\r");
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179
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return 1;
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180
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} |
William Reynolds