Masahiko Yamazaki / Mbed 2 deprecated Lab3-01_save_read_the_number_lite

Lab3-01_save_read_the_number_lite

Dependencies:   mbed HEPTA_CDH_lite

main.cpp

Committer:
heptasat2021
Date:
2021-08-20
Revision:
2:35a16011d7ce
Parent:
1:ddac5ec89167

File content as of revision 2:35a16011d7ce:

#include "mbed.h"
#include "HEPTA_CDH.h"
HEPTA_CDH cdh(PB_5, PB_4, PB_3, PA_8, "sd");
Serial pc(USBTX,USBRX,9600);
int main()
{
    char str[100];
    pc.printf("Hello World!\r\n");
    mkdir("/sd/mydir", 0777);
    FILE *fp = fopen("/sd/mydir/sdtest.txt", "w");
    if(fp == NULL) {
        error("Could not open file for write\r\n");
    }
    for(int i=0; i<10; i++){
        fprintf(fp,"decimal number = %d, floating-point number = %f\r\n",i,i*1.5);
    }
    fclose(fp);
    fp = fopen("/sd/mydir/sdtest.txt","r");
    for(int i = 0; i < 10; i++) {
        fgets(str,100,fp);
        pc.puts(str);
    }
    fclose(fp);
    pc.printf("Goodbye World!\r\n");
}