run on mbed-os6.6.0

NumSD Card pinModule pinPin NamePort NameSPI
1CD/DAT3CSD10PB6-
2CMD/DISDID11PA_7MOSI
3VSS1GNDGND--
4VDD3.3V3V3--
5CLKCLKD13PA_5SCLK
6VSS2GNDGND--
7DAT0/DOSDOD12PA_6MISO
8DAT1----
9DAT2----

電源+/-を含め合計6本の結線で接続します。
Nucleoシリーズは、ボード上のLED(プログラムでLED1)がD13に接続されSPIモード設定時にSCLKとなる構成が多いので、LED1制御を止める必要があります。

For DISCO-F769NI
https://os.mbed.com/users/kenjiArai/code/DISCO-F769NI_BD_SD_Card_Control/
For DISCO-F469NI
https://os.mbed.com/users/kenjiArai/code/DISCO-F469NI_BD_SD_Card_Control/

Revision:
7:29fece78d927
Parent:
6:7f8bc932cede
--- a/main.cpp	Sat May 02 03:44:56 2020 +0000
+++ b/main.cpp	Thu Jan 14 00:07:07 2021 +0000
@@ -1,84 +1,70 @@
 /*
  * Mbed Application program
- *  SD Card file control function with FatFs on Mbed-os5 or os2
+ *  SD Card file control function with FatFs on Mbed-os6
  *
- * Copyright (c) 2018,'19,'20 Kenji Arai / JH1PJL
+ * Copyright (c) 2018,'19,'20,'21 Kenji Arai / JH1PJL
  *  http://www7b.biglobe.ne.jp/~kenjia/
  *  https://os.mbed.com/users/kenjiArai/
  *      Created:    April      4th, 2018
- *      Revised:    May        2nd, 2020
+ *      Revised:    January   14th, 2021
  */
 
 /*
-    Tested board on OS2:
-        Nucleo-F401RE, -F411RE, -F446RE, -L073RZ, -L152RE, -L476RG
-    Tested board on OS5.15.0
-        Nucleo-F401RE, -F411RE, -F446RE, -L152RE, -L073RZ, -L476RG          
+    Tested board on OS6.6.0
+        Nucleo-F446RE
+        FRDM-K64F
+    Tested board on OS5.15.0(Expected to work on OS6.6.0)
+        Nucleo-F401RE, -F411RE, -L152RE, -L073RZ, -L476RG
         nRF52840-DK, nRF52-DK
-        FRDM-K64F
  */
 
 //  Include --------------------------------------------------------------------
-#include    "mbed.h"
-#if (MBED_MAJOR_VERSION == 2)
-#include    "SDFileSystem.h"
-#elif (MBED_MAJOR_VERSION == 5)
-#include    "SDBlockDevice.h"
-#include    "FATFileSystem.h"
-#endif
-#include    "mon.h"
-#include    <stdlib.h>
+#include "mbed.h"
+#include "SDBlockDevice.h"
+#include "FATFileSystem.h"
+#include "mon.h"
+#include "uart_as_stdio.h"
+#include <stdlib.h>
 
 //  Definition -----------------------------------------------------------------
 #define     USER_SW_ON      0
-#if (MBED_MAJOR_VERSION == 2)
-#define     LOOP_TIME       100     // 100mS
-#elif (MBED_MAJOR_VERSION == 5)
-#define     LOOP_TIME       50      // 50mS
-#endif
+#define     LOOP_TIME       150      // 150mS
 
 #define DEBUG  0
 
 #if DEBUG
-#define DBG(...)    pc.printf(__VA_ARGS__)
+#define DBG(...)    printf(__VA_ARGS__)
 #else
 #define DBG(...)    {;}
 #endif
 
+//using namespace std::chrono;
+
 //  Constructor ----------------------------------------------------------------
-Serial          pc(USBTX, USBRX, 115200);
 #if defined(TARGET_NRF52840_DK) || defined(TARGET_NRF52_DK) ||\
     defined(TARGET_K64F)
 DigitalIn       user_sw(BUTTON1, PullUp);
 #else
 DigitalIn       user_sw(USER_BUTTON);
 #endif
-#if (MBED_MAJOR_VERSION == 5)
 #if defined(TARGET_NRF52840_DK) || defined(TARGET_NRF52_DK)
 SDBlockDevice   sd(D11, D12, D13, D10, 8000000);
 #else
 SDBlockDevice   sd(SPI_MOSI, SPI_MISO, SPI_SCK, SPI_CS, 12000000);
 #endif
 FATFileSystem   fs("fs");
-#endif
 Timer tmr;
 
 //  RAM ------------------------------------------------------------------------
 
 //  ROM / Constant data --------------------------------------------------------
 const char *const opening_msg0 = "microSD Card test program";
-#if (MBED_MAJOR_VERSION == 2)
-char *const opening_msg1 = " -> run on Mbed Classic\r\n";
-#elif (MBED_MAJOR_VERSION == 5)
-const char *const opening_msg1 = " -> run on Mbed OS-5\r\n";
-#endif
+const char *const opening_msg1 = " -> run on Mbed OS-6\r\n";
 const char *const opening_msg2 = "microSD Card is ready for use\r\n";
 const char *const opening_msg3 = "Please hit any key to start!\r\n";
 
 //  Function prototypes --------------------------------------------------------
 extern void print_revision(void);
-extern uint32_t get_disk_freespace(void);
-extern uint32_t get_data_file_size(const char *const file_name);
 
 //------------------------------------------------------------------------------
 //  Control Program
@@ -93,68 +79,58 @@
     uint32_t data4 = 50000U;
     uint32_t data5 = 60000U;
 
-    pc.printf("\r\n\r\n");
+    printf("\r\n\r\n");
     print_revision();
     DBG("line:%d\r\n", __LINE__);
-#if (MBED_MAJOR_VERSION == 5)
     /* Init SD CARD reader */
     sd.init();
     fs.mount(&sd);
-#else
-    SDFileSystem    sd(D11, D12, D13, D10, "fs");  // do,di,clk,cs
-    wait_ms(100);
-#endif
     FILE* fp = fopen("/fs/mydata.txt", "a");
     if (fp != 0) {
         DBG("line:%d\r\n", __LINE__);
-        pc.printf("%s%s",  opening_msg0, opening_msg1);
+        printf("%s%s",  opening_msg0, opening_msg1);
         fprintf(fp,"%s%s", opening_msg0, opening_msg1);
-        pc.printf("%s",  opening_msg2);
+        printf("%s",  opening_msg2);
         fclose(fp);
     } else {
-        pc.printf("ERROR\r\n");
+        printf("ERROR\r\n");
     }
-    pc.printf("%s",  opening_msg3);
-    while (pc.readable() == 0) { ;}
-    char c = pc.getc(); // dummy read
+    printf("%s",  opening_msg3);
+    while (readable() == 0) { ;}
+    char c = getc(); // dummy read
     while (true) {
         DBG("line:%d\r\n", __LINE__);
         tmr.reset();
         tmr.start();
-        uint32_t size_disk = get_disk_freespace();
-        uint32_t size_file = get_data_file_size("mydata.txt");
-        pc.printf("free disk:%10u, file:%8u  ", size_disk, size_file);
+        float size_disk = get_disk_freespace() / (1024.0f * 1024.0f * 1024.0f);
+        uint32_t size_file = get_data_file_size("mydata.txt") / 1024;
+        printf(", free disk: %.3f GB, file: %u kB, ", size_disk, size_file);
         fp = fopen("/fs/mydata.txt", "a");
         if(fp != 0) {
             char tmp[64];
             DBG("line:%d\r\n", __LINE__);
             seconds = time(NULL);
             strftime(tmp, 64, "DATE %H:%M:%S,%Y/%m/%d,", localtime(&seconds));
-            pc.printf("%s", tmp);
+            printf("%s", tmp);
             fprintf(fp, "%s", tmp);
-            pc.printf("%08d;%08d;%08d;%08d;%08d;%08d\r\n",
-                      ++data0, ++data1, ++data2, ++data3, ++data4, ++data5);
+            printf("%08d;%08d;%08d;%08d;%08d;%08d\r\n",
+                   ++data0, ++data1, ++data2, ++data3, ++data4, ++data5);
             fprintf(fp, "%08d;%08d;%08d;%08d;%08d;%08d\r\n",
-                        data0,   data1,   data2,   data3,   data4,   data5);
+                    data0,   data1,   data2,   data3,   data4,   data5);
             fclose(fp);
         } else {
-            pc.printf("ERROR\r\n");
+            printf("ERROR\r\n");
         }
-        uint32_t time_sd = tmr.read_ms();
-        pc.printf("time:%3d ", time_sd);
-#if (MBED_MAJOR_VERSION == 2)
-        if (time_sd < LOOP_TIME -2){
-            wait_ms(LOOP_TIME - time_sd);
+        uint32_t time_sd = chrono::duration_cast<chrono::milliseconds>(
+                               tmr.elapsed_time()).count();
+        printf("time:%3d ", time_sd);
+        if (time_sd < LOOP_TIME -2) {
+            ThisThread::sleep_for(chrono::milliseconds(LOOP_TIME - time_sd));
         }
-#elif (MBED_MAJOR_VERSION == 5)
-        if (time_sd < LOOP_TIME -2){
-            ThisThread::sleep_for(LOOP_TIME - time_sd);
-        }
-#endif
         if (user_sw == USER_SW_ON) {
             break;
         }
-        if (pc.readable()) {
+        if (readable()) {
             mon();
         }
     }