liang brain / Mbed 2 deprecated my_example_Nucleo_Ex05_SD_zhangyuxiang2

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Dependencies:   SDFileSystem mbed

Fork of Nucleo_Ex05_SD by YX ZHANG

main.cpp@3:1e51c10aa4f2, 2018-05-03 (annotated)

Committer:
brainliang
Date:
Thu May 03 10:53:02 2018 +0000
Revision:
3:1e51c10aa4f2
Parent:
2:1c1602268656 
for robot arm training

Who changed what in which revision?

UserRevisionLine numberNew contents of line
beaglescout007 0:b0a3ecd53c7d 1 #include "mbed.h"
brainliang 3:1e51c10aa4f2 2 #include "TextLCD.h"
beaglescout007 0:b0a3ecd53c7d 3 #include "SDFileSystem.h"
beaglescout007 0:b0a3ecd53c7d 4
brainliang 3:1e51c10aa4f2 5 //LCD显示屏 rs, e, d4-d7, model
brainliang 3:1e51c10aa4f2 6 TextLCD lcd(PC_13, PC_14, PC_15, PA_0, PA_1, PA_4, TextLCD::LCD20x4); // rs, e, d4-d7, model V4版本
brainliang 3:1e51c10aa4f2 7
brainliang 3:1e51c10aa4f2 8 //SD卡 mosi, miso, sclk, cs, name 用SPI端口
brainliang 3:1e51c10aa4f2 9 SDFileSystem sd(PB_15, PB_14, PB_13, PB_12, "sd");
brainliang 3:1e51c10aa4f2 10 Serial pc(PA_9, PA_10); //与电脑通讯的串口
beaglescout007 0:b0a3ecd53c7d 11
brainliang 3:1e51c10aa4f2 12 int main() {
brainliang 2:1c1602268656 13 DirHandle *dh = opendir("/sd/"); //读取SD卡中的文件列表
brainliang 2:1c1602268656 14 if(!dh){
brainliang 2:1c1602268656 15 pc.printf("opendir error\n");
brainliang 2:1c1602268656 16 return 1;
brainliang 2:1c1602268656 17 }
brainliang 2:1c1602268656 18 dirent *entry;
brainliang 2:1c1602268656 19 for(;;){
brainliang 2:1c1602268656 20 entry = dh->readdir();
brainliang 2:1c1602268656 21 if(!entry)
brainliang 2:1c1602268656 22 break;
brainliang 2:1c1602268656 23 pc.printf("%s\r\n", entry->d_name);
brainliang 2:1c1602268656 24 }
brainliang 2:1c1602268656 25 dh->closedir();
brainliang 2:1c1602268656 26
brainliang 2:1c1602268656 27 // 写文件例子
brainliang 2:1c1602268656 28 FILE *fp2 = fopen("/sd/write.txt", "w");
brainliang 2:1c1602268656 29 if (fp2 == NULL)
brainliang 2:1c1602268656 30 {
brainliang 2:1c1602268656 31 pc.printf("open error2!!\r\n");
brainliang 2:1c1602268656 32 return 1;
brainliang 2:1c1602268656 33 }
brainliang 2:1c1602268656 34 pc.printf("file opened for write\r\n");
brainliang 2:1c1602268656 35 fprintf(fp2, "hello\r\n");
brainliang 2:1c1602268656 36 fprintf(fp2, "%d", 23333);
brainliang 2:1c1602268656 37 fclose(fp2); //写完文件要记得关闭，不然可能没保存上
brainliang 2:1c1602268656 38
zhangyx 1:d65338ce2e7c 39 // 读文件例子
zhangyx 1:d65338ce2e7c 40 FILE *fp = fopen("/sd/test.txt", "r"); //打开文件，路径以“/sd/”开头
beaglescout007 0:b0a3ecd53c7d 41
zhangyx 1:d65338ce2e7c 42 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 43 {
brainliang 2:1c1602268656 44 pc.printf("open error!!\r\n");
zhangyx 1:d65338ce2e7c 45 return 1;
zhangyx 1:d65338ce2e7c 46 }
brainliang 2:1c1602268656 47 pc.printf("file opened for read\r\n");
zhangyx 1:d65338ce2e7c 48 char buf[64];
zhangyx 1:d65338ce2e7c 49 while (fgets(buf, sizeof(buf), fp) != NULL) //读入一行的C函数
zhangyx 1:d65338ce2e7c 50 {
brainliang 2:1c1602268656 51 pc.printf("%s", buf);
zhangyx 1:d65338ce2e7c 52 }
zhangyx 1:d65338ce2e7c 53 fclose(fp); //关闭文件，释放资源
zhangyx 1:d65338ce2e7c 54
brainliang 2:1c1602268656 55 //pc.printf("card type is 0x%x\r\n" , sd.card_type());
beaglescout007 0:b0a3ecd53c7d 56
zhangyx 1:d65338ce2e7c 57 return 0;
brainliang 3:1e51c10aa4f2 58
brainliang 3:1e51c10aa4f2 59
brainliang 3:1e51c10aa4f2 60 lcd.printf("Hello World!");
brainliang 3:1e51c10aa4f2 61 wait_ms(1000); //等待1秒
brainliang 3:1e51c10aa4f2 62 lcd.cls(); //清屏
brainliang 3:1e51c10aa4f2 63
brainliang 3:1e51c10aa4f2 64 for(int i=0; i<10000; i+=4){
brainliang 3:1e51c10aa4f2 65 lcd.locate(0,0); //分别控制起始的列和行，从0开始
brainliang 3:1e51c10aa4f2 66 lcd.printf("%d", i);
brainliang 3:1e51c10aa4f2 67 wait_ms(1000); //等待1秒
brainliang 3:1e51c10aa4f2 68
brainliang 3:1e51c10aa4f2 69 lcd.locate(0,1);
brainliang 3:1e51c10aa4f2 70 lcd.printf("%d", i+1);
brainliang 3:1e51c10aa4f2 71 wait_ms(1000);
brainliang 3:1e51c10aa4f2 72
brainliang 3:1e51c10aa4f2 73 lcd.locate(0,2);
brainliang 3:1e51c10aa4f2 74 lcd.printf("%d", i+2);
brainliang 3:1e51c10aa4f2 75 wait_ms(1000);
brainliang 3:1e51c10aa4f2 76
brainliang 3:1e51c10aa4f2 77 lcd.locate(0,3);
brainliang 3:1e51c10aa4f2 78 lcd.printf("%d", i+3);
brainliang 3:1e51c10aa4f2 79 wait_ms(1000);
brainliang 3:1e51c10aa4f2 80
brainliang 3:1e51c10aa4f2 81 lcd.cls(); //清屏
brainliang 3:1e51c10aa4f2 82 }
brainliang 3:1e51c10aa4f2 83
brainliang 3:1e51c10aa4f2 84
brainliang 3:1e51c10aa4f2 85
beaglescout007 0:b0a3ecd53c7d 86 }