liang brain / Mbed 2 deprecated Ex_3Dprinter_copy

dsfa

Dependencies:   dsf SDFileSystem TextLCD mbed stepper_moter

Fork of my_example_Nucleo_Ex05_SD_zhangyuxiang2 by liang brain

main.cpp@2:1c1602268656, 2018-05-03 (annotated)

Committer:
brainliang
Date:
Thu May 03 10:36:22 2018 +0000
Revision:
2:1c1602268656
Parent:
1:d65338ce2e7c
Child:
3:1e51c10aa4f2
jkj

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
brainliang 2:1c1602268656 4 // mosi, miso, sclk, name 用SPI端口
brainliang 2:1c1602268656 5 //SDFileSystem sd(PB_15, PB_14, PB_13, PA_9, "sd");
brainliang 2:1c1602268656 6 //Serial pc(PA_2, PA_3);
brainliang 2:1c1602268656 7 SDFileSystem sd(PA_7, PA_6, PA_5, PA_15, "sd"); //教学板上的管脚
brainliang 2:1c1602268656 8 Serial pc(PA_9, PA_10); //教学板上与电脑通讯的串口
beaglescout007 0:b0a3ecd53c7d 9
beaglescout007 0:b0a3ecd53c7d 10 int main()
beaglescout007 0:b0a3ecd53c7d 11 {
brainliang 2:1c1602268656 12 DirHandle *dh = opendir("/sd/"); //读取SD卡中的文件列表
brainliang 2:1c1602268656 13 if(!dh){
brainliang 2:1c1602268656 14 pc.printf("opendir error\n");
brainliang 2:1c1602268656 15 return 1;
brainliang 2:1c1602268656 16 }
brainliang 2:1c1602268656 17 dirent *entry;
brainliang 2:1c1602268656 18 for(;;){
brainliang 2:1c1602268656 19 entry = dh->readdir();
brainliang 2:1c1602268656 20 if(!entry)
brainliang 2:1c1602268656 21 break;
brainliang 2:1c1602268656 22 pc.printf("%s\r\n", entry->d_name);
brainliang 2:1c1602268656 23 }
brainliang 2:1c1602268656 24 dh->closedir();
brainliang 2:1c1602268656 25
brainliang 2:1c1602268656 26 // 写文件例子
brainliang 2:1c1602268656 27 FILE *fp2 = fopen("/sd/write.txt", "w");
brainliang 2:1c1602268656 28 if (fp2 == NULL)
brainliang 2:1c1602268656 29 {
brainliang 2:1c1602268656 30 pc.printf("open error2!!\r\n");
brainliang 2:1c1602268656 31 return 1;
brainliang 2:1c1602268656 32 }
brainliang 2:1c1602268656 33 pc.printf("file opened for write\r\n");
brainliang 2:1c1602268656 34 fprintf(fp2, "hello\r\n");
brainliang 2:1c1602268656 35 fprintf(fp2, "%d", 23333);
brainliang 2:1c1602268656 36 fclose(fp2); //写完文件要记得关闭，不然可能没保存上
brainliang 2:1c1602268656 37
zhangyx 1:d65338ce2e7c 38 // 读文件例子
zhangyx 1:d65338ce2e7c 39 FILE *fp = fopen("/sd/test.txt", "r"); //打开文件，路径以“/sd/”开头
beaglescout007 0:b0a3ecd53c7d 40
zhangyx 1:d65338ce2e7c 41 if (fp == NULL) //打开失败，原因可能是文件不存在，或卡没有连接好
zhangyx 1:d65338ce2e7c 42 {
brainliang 2:1c1602268656 43 pc.printf("open error!!\r\n");
zhangyx 1:d65338ce2e7c 44 return 1;
zhangyx 1:d65338ce2e7c 45 }
brainliang 2:1c1602268656 46 pc.printf("file opened for read\r\n");
zhangyx 1:d65338ce2e7c 47 char buf[64];
zhangyx 1:d65338ce2e7c 48 while (fgets(buf, sizeof(buf), fp) != NULL) //读入一行的C函数
zhangyx 1:d65338ce2e7c 49 {
brainliang 2:1c1602268656 50 pc.printf("%s", buf);
zhangyx 1:d65338ce2e7c 51 }
zhangyx 1:d65338ce2e7c 52 fclose(fp); //关闭文件，释放资源
zhangyx 1:d65338ce2e7c 53
brainliang 2:1c1602268656 54 //pc.printf("card type is 0x%x\r\n" , sd.card_type());
beaglescout007 0:b0a3ecd53c7d 55
zhangyx 1:d65338ce2e7c 56 return 0;
beaglescout007 0:b0a3ecd53c7d 57 }