main.cpp

00001 #include "mbed.h"
00002 
00003 Serial pc(USBTX, USBRX);
00004 LocalFileSystem local("local");
00005 
00006 void get_from_pc(char* buffer) {
00007     char c;
00008     int i;
00009     for (i=0; i<64; i++) buffer[i] = '\0';
00010     i=0;
00011     pc.printf(": ");
00012     while ((i<64) && ((c = pc.getc()) != '\n')) {
00013         if (c == 0x7f) {
00014             if (i>0) {
00015                 i--;
00016                 buffer[i] = '\0';
00017                 pc.putc(8);
00018                 pc.putc(' ');
00019                 pc.putc(8);
00020             }
00021         } else {
00022             pc.putc(c);
00023             buffer[i] = c;
00024             i++;
00025         }
00026     }
00027     pc.printf("\n\r");
00028 }
00029 
00030 void ls() {
00031     DIR* d = opendir("/local");
00032     struct dirent *p;
00033     while ((p=readdir(d)) != NULL) pc.printf("%s\n\r", p->d_name);
00034     closedir(d);
00035 }
00036 
00037 void cat(char* buffer) {
00038     int i;
00039     signed char c;
00040     char filepath[19] = "/local/";
00041     for (i=0;i<60;i++) buffer[i] = buffer[i+4];
00042     for (i=7;i<19;i++) filepath[i] = buffer[i-7];
00043     FILE* file = fopen(filepath, "r");
00044     while ((c=fgetc(file)) != EOF) {
00045         pc.putc(c);
00046         if (c == '\n') pc.putc('\r');
00047     }
00048     fclose(file);
00049     pc.printf("\r");
00050 }
00051 
00052 void ed(char* buffer) {
00053     int i;
00054     signed char c;
00055     char filepath[19] = "/local/";
00056     for (i=0;i<61;i++) buffer[i] = buffer[i+3];
00057     for (i=7;i<19;i++) filepath[i] = buffer[i-7];
00058     FILE* file = fopen(filepath, "w");
00059     c = pc.getc();
00060     while ((c != 4) && (c != EOF)) {
00061         if (c == 0x7F) {
00062             pc.putc(8);
00063             pc.putc(' ');
00064             pc.putc(8);
00065             fseek(file, -1, SEEK_CUR);
00066         } else {
00067             pc.putc(c);
00068             fputc(c, file);
00069             if (c == '\n') pc.putc('\r');
00070         }
00071         c = pc.getc();
00072     }
00073     pc.printf("\n\r");
00074     fputc('\n', file);
00075     fflush(file);
00076     fclose(file);
00077 }
00078 
00079 int main() {
00080     char buffer[64];
00081     pc.baud(115200);
00082     pc.printf("Local Flash Filesystem Test\n\r");
00083     pc.printf("Nathan Lasseter 2010\n\n\r");
00084     pc.printf("Up to 64 characters input is allowed,\n\r\tup to 8 character filenames (excluding extension)\n\r");
00085     pc.printf("Commands: ls, cat filename, ed filename\n\n\r");
00086     while(1) {
00087         get_from_pc(buffer);
00088         if (strncmp(buffer, "ls", 2) == 0) {
00089             ls();
00090         } else if (strncmp(buffer, "cat", 3) == 0) {
00091             cat(buffer);
00092         } else if (strncmp(buffer, "ed", 2) == 0) {
00093             ed(buffer);
00094         } else if (strcmp(buffer, "") == 0) {
00095             pc.printf("! No command\n\r");
00096         } else {
00097             pc.printf("! Invalid Command <%s>\n\r", buffer);
00098         }
00099     }
00100 }