Diff: main.cpp

Revision:

0:0f6db11f0aad

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Dec 18 02:03:24 2020 +0000
@@ -0,0 +1,57 @@
+#include "mbed.h"
+#include "SDFileSystem.h"
+
+DigitalIn btn(D2);
+RawSerial  pc(PA_2, PA_3);
+//SDFileSystem sd(D11, D12, D13, D10, "sd", NC, SDFileSystem::SWITCH_NONE, 20000000); // mosi, miso, sclk, name, card detect, sw type, freq
+//SDFileSystem sd(PB_15, PB_14, PB_13, D4, "sd", NC, SDFileSystem::SWITCH_NONE, 20000000); // mosi, miso, sclk, CS,name, card detect, sw type, freq
+SDFileSystem sd(D11,D12,D13,A0, "sd", NC, SDFileSystem::SWITCH_NONE,10000000); // mosi, miso, sclk, CS,name, card detect, sw type, freq
+
+// trim '\n'
+void ntrim(char *str)
+{
+    int i;
+    for (i = 0; str[i] != 0; ++i);
+
+    if (i > 0 && str[i - 1] == '\n')
+        str[i - 1] = 0;
+}
+
+
+int main()
+{
+    pc.printf("Hello\r\n");
+    // SD filesystem
+//    SDFileSystem *sd = new SDFileSystem(D11, D12, D13, D10, "sd", NC, SDFileSystem::SWITCH_NONE, 20000000); // mosi, miso, sclk, name, card detect, sw type, freq
+
+    while (1)
+    {
+       // if (btn) continue;
+
+        // file open
+        FILE *fp = fopen("/sd/test.txt", "r");
+        if (fp == NULL)
+        {
+            printf("open error!!\r\n");
+            goto neww;
+            //while(1);
+        }
+        // read text file
+        char buf[1024];
+        while (fgets(buf, sizeof(buf), fp) != NULL)
+        {
+            ntrim(buf);            
+            printf("%s\r\n", buf);
+        }
+    
+        // file close
+        fclose(fp);      
+ neww:         
+     fp = fopen("/sd/test.txt", "a");
+     fprintf(fp,"test write\n");
+     fclose(fp);        
+     while(1);
+
+        wait(1);
+    }
+}