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Dependencies: SDFileSystem mbed
Fork of SPI_SDcard_Helloworld_WIZwiki-W7500 by
main.cpp@1:f4d825b196e7, 2015-06-29 (annotated)
- Committer:
- eunkyoungkim
- Date:
- Mon Jun 29 01:38:35 2015 +0000
- Revision:
- 1:f4d825b196e7
- Parent:
- 0:bdbd3d6fc5d5
- Child:
- 2:343b407cf6aa
SD card read/Write; view the terminal window
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" |
eunkyoungkim | 1:f4d825b196e7 | 3 | |
eunkyoungkim | 1:f4d825b196e7 | 4 | #define MAX_SIZE 100 |
eunkyoungkim | 1:f4d825b196e7 | 5 | SDFileSystem sd(PB_3, PB_2, PB_1, PB_0, "sd"); // the pinout on the mbed Cool Components workshop board |
eunkyoungkim | 1:f4d825b196e7 | 6 | |
eunkyoungkim | 1:f4d825b196e7 | 7 | char sdread[MAX_SIZE]; |
mbed_official | 0:bdbd3d6fc5d5 | 8 | int main() { |
mbed_official | 0:bdbd3d6fc5d5 | 9 | printf("Hello World!\n"); |
mbed_official | 0:bdbd3d6fc5d5 | 10 | |
mbed_official | 0:bdbd3d6fc5d5 | 11 | mkdir("/sd/mydir", 0777); |
mbed_official | 0:bdbd3d6fc5d5 | 12 | |
mbed_official | 0:bdbd3d6fc5d5 | 13 | FILE *fp = fopen("/sd/mydir/sdtest.txt", "w"); |
mbed_official | 0:bdbd3d6fc5d5 | 14 | if(fp == NULL) { |
mbed_official | 0:bdbd3d6fc5d5 | 15 | error("Could not open file for write\n"); |
mbed_official | 0:bdbd3d6fc5d5 | 16 | } |
mbed_official | 0:bdbd3d6fc5d5 | 17 | fprintf(fp, "Hello fun SD Card World!"); |
mbed_official | 0:bdbd3d6fc5d5 | 18 | fclose(fp); |
eunkyoungkim | 1:f4d825b196e7 | 19 | |
eunkyoungkim | 1:f4d825b196e7 | 20 | printf("Reading from SD card...\r\n"); |
eunkyoungkim | 1:f4d825b196e7 | 21 | fp = fopen("/sd/mydir/sdtest.txt", "r"); |
eunkyoungkim | 1:f4d825b196e7 | 22 | if (fp != NULL) { |
eunkyoungkim | 1:f4d825b196e7 | 23 | fgets(sdread,MAX_SIZE,fp); |
eunkyoungkim | 1:f4d825b196e7 | 24 | printf("READ_STR = %s", sdread); |
eunkyoungkim | 1:f4d825b196e7 | 25 | fclose(fp); |
eunkyoungkim | 1:f4d825b196e7 | 26 | } else { |
eunkyoungkim | 1:f4d825b196e7 | 27 | printf("failed!\n"); |
eunkyoungkim | 1:f4d825b196e7 | 28 | } |
mbed_official | 0:bdbd3d6fc5d5 | 29 | } |