I-O DATA DEV2 / Mbed 2 deprecated Nucleo_SD_test

This example demonstrates the reading of the SD card in the Nucleo.

Dependencies:   mbed SDFileSystem

main.cpp@1:9d8797b91dda, 2020-12-03 (annotated)

Committer:
hakusan270
Date:
Thu Dec 03 11:25:46 2020 +0000
Revision:
1:9d8797b91dda
Parent:
0:b0a3ecd53c7d 
SD card

Who changed what in which revision?

UserRevisionLine numberNew contents of line
beaglescout007 0:b0a3ecd53c7d 1 #include "mbed.h"
beaglescout007 0:b0a3ecd53c7d 2 #include "SDFileSystem.h"
beaglescout007 0:b0a3ecd53c7d 3
beaglescout007 0:b0a3ecd53c7d 4 DigitalIn btn(USER_BUTTON);
beaglescout007 0:b0a3ecd53c7d 5
beaglescout007 0:b0a3ecd53c7d 6 // trim '\n'
beaglescout007 0:b0a3ecd53c7d 7 void ntrim(char *str)
beaglescout007 0:b0a3ecd53c7d 8 {
beaglescout007 0:b0a3ecd53c7d 9 int i;
beaglescout007 0:b0a3ecd53c7d 10 for (i = 0; str[i] != 0; ++i);
beaglescout007 0:b0a3ecd53c7d 11
beaglescout007 0:b0a3ecd53c7d 12 if (i > 0 && str[i - 1] == '\n')
beaglescout007 0:b0a3ecd53c7d 13 str[i - 1] = 0;
beaglescout007 0:b0a3ecd53c7d 14 }
beaglescout007 0:b0a3ecd53c7d 15
beaglescout007 0:b0a3ecd53c7d 16 int main()
beaglescout007 0:b0a3ecd53c7d 17 {
hakusan270 1:9d8797b91dda 18 printf("Hello\r\n");
beaglescout007 0:b0a3ecd53c7d 19 // SD filesystem
hakusan270 1:9d8797b91dda 20 SDFileSystem *sd = new SDFileSystem(D11, D12, D13, D10, "sd", NC, SDFileSystem::SWITCH_NONE, 20000000); // mosi, miso, sclk, name, card detect, sw type, freq
beaglescout007 0:b0a3ecd53c7d 21
beaglescout007 0:b0a3ecd53c7d 22 while (1)
beaglescout007 0:b0a3ecd53c7d 23 {
beaglescout007 0:b0a3ecd53c7d 24 if (btn) continue;
beaglescout007 0:b0a3ecd53c7d 25
beaglescout007 0:b0a3ecd53c7d 26 // file open
hakusan270 1:9d8797b91dda 27 FILE *fp = fopen("/sd/sd/test.txt", "r");
beaglescout007 0:b0a3ecd53c7d 28 if (fp == NULL)
beaglescout007 0:b0a3ecd53c7d 29 {
beaglescout007 0:b0a3ecd53c7d 30 printf("open error!!\r\n");
beaglescout007 0:b0a3ecd53c7d 31 while(1);
beaglescout007 0:b0a3ecd53c7d 32 }
hakusan270 1:9d8797b91dda 33 // fprintf(fp,"test write\n");
hakusan270 1:9d8797b91dda 34 // fclose(fp);
beaglescout007 0:b0a3ecd53c7d 35 // read text file
beaglescout007 0:b0a3ecd53c7d 36 char buf[1024];
beaglescout007 0:b0a3ecd53c7d 37 while (fgets(buf, sizeof(buf), fp) != NULL)
beaglescout007 0:b0a3ecd53c7d 38 {
beaglescout007 0:b0a3ecd53c7d 39 ntrim(buf);
beaglescout007 0:b0a3ecd53c7d 40 printf("%s\r\n", buf);
beaglescout007 0:b0a3ecd53c7d 41 }
beaglescout007 0:b0a3ecd53c7d 42
beaglescout007 0:b0a3ecd53c7d 43 // file close
beaglescout007 0:b0a3ecd53c7d 44 fclose(fp);
beaglescout007 0:b0a3ecd53c7d 45
beaglescout007 0:b0a3ecd53c7d 46 wait(1);
beaglescout007 0:b0a3ecd53c7d 47 }
beaglescout007 0:b0a3ecd53c7d 48 }