"
Dependencies: SDFileSystem mbed
Fork of SD_ReadWrite_K64 by
main.cpp@1:2cf8f0893afd, 2014-07-24 (annotated)
- Committer:
- bentrevett
- Date:
- Thu Jul 24 12:55:11 2014 +0000
- Revision:
- 1:2cf8f0893afd
- Parent:
- 0:bdbd3d6fc5d5
- Child:
- 2:b441f859191d
Reading and Writing to SD Card; ; Description:; ; A small project made with mbed (mbed.org) on the FRDM-KL64 using the SD card capabilities.; The program will open a file called test.txt in the root of the SD card, and will create one if it does not exi
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 0:bdbd3d6fc5d5 | 1 | #include "mbed.h" |
mbed_official | 0:bdbd3d6fc5d5 | 2 | #include "SDFileSystem.h" |
mbed_official | 0:bdbd3d6fc5d5 | 3 | |
bentrevett | 1:2cf8f0893afd | 4 | SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd"); //mosi, miso, sclk, cs |
bentrevett | 1:2cf8f0893afd | 5 | |
bentrevett | 1:2cf8f0893afd | 6 | |
bentrevett | 1:2cf8f0893afd | 7 | #define charlimit 100 |
bentrevett | 1:2cf8f0893afd | 8 | char words[charlimit]; |
bentrevett | 1:2cf8f0893afd | 9 | int n=0,c; |
bentrevett | 1:2cf8f0893afd | 10 | |
mbed_official | 0:bdbd3d6fc5d5 | 11 | int main() { |
bentrevett | 1:2cf8f0893afd | 12 | |
bentrevett | 1:2cf8f0893afd | 13 | //writing to SD card |
bentrevett | 1:2cf8f0893afd | 14 | printf("Opening SD card...\r\n"); |
bentrevett | 1:2cf8f0893afd | 15 | |
bentrevett | 1:2cf8f0893afd | 16 | FILE *fp = fopen("/sd/test.txt", "w"); |
bentrevett | 1:2cf8f0893afd | 17 | if(fp == NULL) { |
bentrevett | 1:2cf8f0893afd | 18 | error("Could not open file for write!\r\n"); |
bentrevett | 1:2cf8f0893afd | 19 | } |
mbed_official | 0:bdbd3d6fc5d5 | 20 | |
bentrevett | 1:2cf8f0893afd | 21 | printf("Writing to SD card...\r\n"); |
bentrevett | 1:2cf8f0893afd | 22 | fprintf(fp, "one two three four five\r\n"); |
mbed_official | 0:bdbd3d6fc5d5 | 23 | fclose(fp); |
bentrevett | 1:2cf8f0893afd | 24 | |
bentrevett | 1:2cf8f0893afd | 25 | //reading from SD card |
bentrevett | 1:2cf8f0893afd | 26 | FILE *fp1 =fopen("/sd/test.txt.", "r"); |
bentrevett | 1:2cf8f0893afd | 27 | if(fp1==NULL){ |
bentrevett | 1:2cf8f0893afd | 28 | error("Could not open file for read!\r\n"); |
bentrevett | 1:2cf8f0893afd | 29 | } |
bentrevett | 1:2cf8f0893afd | 30 | |
bentrevett | 1:2cf8f0893afd | 31 | printf("Reading from SD card...\r\n"); |
bentrevett | 1:2cf8f0893afd | 32 | |
bentrevett | 1:2cf8f0893afd | 33 | while((c=fgetc(fp1)) && c!=EOF){ |
bentrevett | 1:2cf8f0893afd | 34 | words[n]=c; |
bentrevett | 1:2cf8f0893afd | 35 | n++; |
bentrevett | 1:2cf8f0893afd | 36 | } |
bentrevett | 1:2cf8f0893afd | 37 | |
bentrevett | 1:2cf8f0893afd | 38 | printf("Read from SD card: %s",words); |
bentrevett | 1:2cf8f0893afd | 39 | |
bentrevett | 1:2cf8f0893afd | 40 | fclose(fp1); |
mbed_official | 0:bdbd3d6fc5d5 | 41 | |
mbed_official | 0:bdbd3d6fc5d5 | 42 | } |