Kevin Braun / Mbed OS K64F-os5-fs

Simple SD File System test using mbed-os, FATFileSystem + sd-driver

Dependencies:  

Fork of mbed-os-example-fat-filesystem by mbed-os-examples

main.cpp@9:4cbf1601a4a5, 2017-08-02 (annotated)

Committer:
loopsva
Date:
Wed Aug 02 21:47:39 2017 +0000
Revision:
9:4cbf1601a4a5
Parent:
0:ab69df6f1c47 
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:ab69df6f1c47 1 #include "mbed.h"
mbed_official 0:ab69df6f1c47 2 #include "FATFileSystem.h"
loopsva 9:4cbf1601a4a5 3 #include "SDBlockDevice.h"
loopsva 9:4cbf1601a4a5 4
loopsva 9:4cbf1601a4a5 5 DigitalOut gpo(D0);
loopsva 9:4cbf1601a4a5 6 DigitalOut led(LED_RED);
loopsva 9:4cbf1601a4a5 7
loopsva 9:4cbf1601a4a5 8 RawSerial pc(USBTX, USBRX);
loopsva 9:4cbf1601a4a5 9 SDBlockDevice sd(MBED_CONF_SD_SPI_MOSI, MBED_CONF_SD_SPI_MISO, MBED_CONF_SD_SPI_CLK, MBED_CONF_SD_SPI_CS);
loopsva 9:4cbf1601a4a5 10 FATFileSystem fs("sd", &sd);
loopsva 9:4cbf1601a4a5 11
loopsva 9:4cbf1601a4a5 12 //--------------------------------------------------------------------------------------------------------------------------------------//
loopsva 9:4cbf1601a4a5 13 // Initialize the file system
loopsva 9:4cbf1601a4a5 14
loopsva 9:4cbf1601a4a5 15 #define FS_INIT_FILENAME "/sd/hello.txt"
mbed_official 0:ab69df6f1c47 16
loopsva 9:4cbf1601a4a5 17 void initFS() {
loopsva 9:4cbf1601a4a5 18 pc.printf("Initializing the SDFileSystem...\r\n");
loopsva 9:4cbf1601a4a5 19 FILE* fhr = fopen(FS_INIT_FILENAME, "r");
loopsva 9:4cbf1601a4a5 20 if(fhr != NULL) {
loopsva 9:4cbf1601a4a5 21 fclose(fhr);
loopsva 9:4cbf1601a4a5 22 pc.printf("Found test file %s\r\n...", FS_INIT_FILENAME);
loopsva 9:4cbf1601a4a5 23 } else {
loopsva 9:4cbf1601a4a5 24 pc.printf("File: %s not found. Creating\r\n", FS_INIT_FILENAME);
loopsva 9:4cbf1601a4a5 25 FILE* fhw = fopen(FS_INIT_FILENAME, "w");
loopsva 9:4cbf1601a4a5 26 if(fhw != NULL) {
loopsva 9:4cbf1601a4a5 27 fwrite("Hello World!", 12, 1, fhw);
loopsva 9:4cbf1601a4a5 28 fprintf(fhw, "Hello World!\n");
loopsva 9:4cbf1601a4a5 29 fclose(fhw);
loopsva 9:4cbf1601a4a5 30 } else {
loopsva 9:4cbf1601a4a5 31 pc.printf("*** Cannot write file: %s\r\n", FS_INIT_FILENAME);
loopsva 9:4cbf1601a4a5 32 }
loopsva 9:4cbf1601a4a5 33 }
mbed_official 0:ab69df6f1c47 34 }
mbed_official 0:ab69df6f1c47 35
loopsva 9:4cbf1601a4a5 36 //--------------------------------------------------------------------------------------------------------------------------------------//
loopsva 9:4cbf1601a4a5 37 // main
mbed_official 0:ab69df6f1c47 38
mbed_official 0:ab69df6f1c47 39 int main() {
loopsva 9:4cbf1601a4a5 40 pc.baud(230400);
loopsva 9:4cbf1601a4a5 41 pc.printf("\r\n\r\n--------------------------------------------------------------------------------\r\n");
loopsva 9:4cbf1601a4a5 42 pc.printf("FRDM-K64F + OS5 + FS");
loopsva 9:4cbf1601a4a5 43 pc.printf(" -> build: " __DATE__ " " __TIME__ "(UTC) K Braun\n");
loopsva 9:4cbf1601a4a5 44 initFS();
loopsva 9:4cbf1601a4a5 45 while (true) {
loopsva 9:4cbf1601a4a5 46 gpo = !gpo; // toggle pin
loopsva 9:4cbf1601a4a5 47 led = !led; // toggle led
loopsva 9:4cbf1601a4a5 48 wait(0.2f);
loopsva 9:4cbf1601a4a5 49 }
loopsva 9:4cbf1601a4a5 50 }