main.cpp

00001 #include "mbed.h"
00002 #include "SDFileSystem.h"
00003 
00004 DigitalIn btn(D2);
00005 RawSerial  pc(PA_2, PA_3);
00006 //SDFileSystem sd(D11, D12, D13, D10, "sd", NC, SDFileSystem::SWITCH_NONE, 20000000); // mosi, miso, sclk, name, card detect, sw type, freq
00007 //SDFileSystem sd(PB_15, PB_14, PB_13, D4, "sd", NC, SDFileSystem::SWITCH_NONE, 20000000); // mosi, miso, sclk, CS,name, card detect, sw type, freq
00008 SDFileSystem sd(D11,D12,D13,A0, "sd", NC, SDFileSystem::SWITCH_NONE,10000000); // mosi, miso, sclk, CS,name, card detect, sw type, freq
00009 
00010 // trim '\n'
00011 void ntrim(char *str)
00012 {
00013     int i;
00014     for (i = 0; str[i] != 0; ++i);
00015 
00016     if (i > 0 && str[i - 1] == '\n')
00017         str[i - 1] = 0;
00018 }
00019 
00020 
00021 int main()
00022 {
00023     pc.printf("Hello\r\n");
00024     // SD filesystem
00025 //    SDFileSystem *sd = new SDFileSystem(D11, D12, D13, D10, "sd", NC, SDFileSystem::SWITCH_NONE, 20000000); // mosi, miso, sclk, name, card detect, sw type, freq
00026 
00027     while (1)
00028     {
00029        // if (btn) continue;
00030 
00031         // file open
00032         FILE *fp = fopen("/sd/test.txt", "r");
00033         if (fp == NULL)
00034         {
00035             printf("open error!!\r\n");
00036             goto neww;
00037             //while(1);
00038         }
00039         // read text file
00040         char buf[1024];
00041         while (fgets(buf, sizeof(buf), fp) != NULL)
00042         {
00043             ntrim(buf);            
00044             printf("%s\r\n", buf);
00045         }
00046     
00047         // file close
00048         fclose(fp);      
00049  neww:         
00050      fp = fopen("/sd/test.txt", "a");
00051      fprintf(fp,"test write\n");
00052      fclose(fp);        
00053      while(1);
00054 
00055         wait(1);
00056     }
00057 }