Kenji Arai / Mbed OS RAM_Disk_Control

RAM Disk function using Mbed os5 standard library

Please refer following my Notebook page.
/users/kenjiArai/notebook/sd-card-control-new/#

main.cpp@0:308d4fafaafb, 2018-04-07 (annotated)

Committer:
kenjiArai
Date:
Sat Apr 07 01:41:49 2018 +0000
Revision:
0:308d4fafaafb
Child:
1:58fc0cbd9a41
RAM Disk function using Mbed os5 standard library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kenjiArai 0:308d4fafaafb 1 /*
kenjiArai 0:308d4fafaafb 2 * Mbed Application program
kenjiArai 0:308d4fafaafb 3 * RAM Disck function with FatFs on Mbed-os5
kenjiArai 0:308d4fafaafb 4 *
kenjiArai 0:308d4fafaafb 5 * Copyright (c) 2018 Kenji Arai / JH1PJL
kenjiArai 0:308d4fafaafb 6 * http://www.page.sannet.ne.jp/kenjia/index.html
kenjiArai 0:308d4fafaafb 7 * https://os.mbed.com/users/kenjiArai/
kenjiArai 0:308d4fafaafb 8 * Created: April 7th, 2018
kenjiArai 0:308d4fafaafb 9 * Revised: April 7th, 2018
kenjiArai 0:308d4fafaafb 10 */
kenjiArai 0:308d4fafaafb 11
kenjiArai 0:308d4fafaafb 12 // Include --------------------------------------------------------------------
kenjiArai 0:308d4fafaafb 13 #include "mbed.h"
kenjiArai 0:308d4fafaafb 14 #include "FATFileSystem.h"
kenjiArai 0:308d4fafaafb 15 #include "HeapBlockDevice.h"
kenjiArai 0:308d4fafaafb 16 #include "mon.h"
kenjiArai 0:308d4fafaafb 17 #include <stdlib.h>
kenjiArai 0:308d4fafaafb 18 #include <stdio.h>
kenjiArai 0:308d4fafaafb 19 #include <errno.h>
kenjiArai 0:308d4fafaafb 20
kenjiArai 0:308d4fafaafb 21 // Definition -----------------------------------------------------------------
kenjiArai 0:308d4fafaafb 22 #if defined(TARGET_DISCO_F769NI)
kenjiArai 0:308d4fafaafb 23 #define USER_SW_ON 1
kenjiArai 0:308d4fafaafb 24 #else
kenjiArai 0:308d4fafaafb 25 #define USER_SW_ON 0
kenjiArai 0:308d4fafaafb 26 #endif
kenjiArai 0:308d4fafaafb 27
kenjiArai 0:308d4fafaafb 28 #define DISK_SIZE_LIMIT (5 * 512)
kenjiArai 0:308d4fafaafb 29
kenjiArai 0:308d4fafaafb 30 // Constructor ----------------------------------------------------------------
kenjiArai 0:308d4fafaafb 31 DigitalOut led(LED1);
kenjiArai 0:308d4fafaafb 32 DigitalIn user_sw(USER_BUTTON);
kenjiArai 0:308d4fafaafb 33 Serial pc(USBTX, USBRX, 115200);
kenjiArai 0:308d4fafaafb 34 HeapBlockDevice bd(128 * 512, 512); // Keep 64KB area
kenjiArai 0:308d4fafaafb 35 FATFileSystem fs("fs");
kenjiArai 0:308d4fafaafb 36
kenjiArai 0:308d4fafaafb 37 // RAM ------------------------------------------------------------------------
kenjiArai 0:308d4fafaafb 38
kenjiArai 0:308d4fafaafb 39 // ROM / Constant data --------------------------------------------------------
kenjiArai 0:308d4fafaafb 40 char *const opening_msg0 = "RAM Disk (use Heap area) test program";
kenjiArai 0:308d4fafaafb 41 char *const opening_msg1 = " -> run on Mbed OS-5\r\n";
kenjiArai 0:308d4fafaafb 42
kenjiArai 0:308d4fafaafb 43 // Function prototypes --------------------------------------------------------
kenjiArai 0:308d4fafaafb 44 void return_error (int ret_val);
kenjiArai 0:308d4fafaafb 45 void errno_error (void* ret_val);
kenjiArai 0:308d4fafaafb 46
kenjiArai 0:308d4fafaafb 47 //------------------------------------------------------------------------------
kenjiArai 0:308d4fafaafb 48 // Control Program
kenjiArai 0:308d4fafaafb 49 //------------------------------------------------------------------------------
kenjiArai 0:308d4fafaafb 50 int main()
kenjiArai 0:308d4fafaafb 51 {
kenjiArai 0:308d4fafaafb 52 time_t seconds;
kenjiArai 0:308d4fafaafb 53 uint32_t data0 = 10000U;
kenjiArai 0:308d4fafaafb 54 uint32_t data1 = 20000U;
kenjiArai 0:308d4fafaafb 55 uint32_t data2 = 30000U;
kenjiArai 0:308d4fafaafb 56 uint32_t data3 = 40000U;
kenjiArai 0:308d4fafaafb 57 uint32_t data4 = 50000U;
kenjiArai 0:308d4fafaafb 58 uint32_t data5 = 60000U;
kenjiArai 0:308d4fafaafb 59
kenjiArai 0:308d4fafaafb 60 if (user_sw == USER_SW_ON) {
kenjiArai 0:308d4fafaafb 61 mon();
kenjiArai 0:308d4fafaafb 62 }
kenjiArai 0:308d4fafaafb 63 //pc.printf("line:%d\r\n", __LINE__);
kenjiArai 0:308d4fafaafb 64 pc.printf("\r\nStart\r\n");
kenjiArai 0:308d4fafaafb 65 int error = 0;
kenjiArai 0:308d4fafaafb 66 pc.printf("Welcome to the filesystem example.\r\n");
kenjiArai 0:308d4fafaafb 67 pc.printf("Mounting the filesystem on \"/fs\". \r\n");
kenjiArai 0:308d4fafaafb 68 pc.printf("Formatting a FAT, RAM-backed filesystem.\r\n");
kenjiArai 0:308d4fafaafb 69 error = FATFileSystem::format(&bd);
kenjiArai 0:308d4fafaafb 70 return_error(error);
kenjiArai 0:308d4fafaafb 71 pc.printf("Mounting the filesystem on \"/fs\". \r\n");
kenjiArai 0:308d4fafaafb 72 error = fs.mount(&bd);
kenjiArai 0:308d4fafaafb 73 return_error(error);
kenjiArai 0:308d4fafaafb 74
kenjiArai 0:308d4fafaafb 75 FILE* fp = fopen("/fs/mydata.txt", "a");
kenjiArai 0:308d4fafaafb 76 errno_error(fp);
kenjiArai 0:308d4fafaafb 77 if (fp != 0) {
kenjiArai 0:308d4fafaafb 78 pc.printf("%s%s", opening_msg0, opening_msg1);
kenjiArai 0:308d4fafaafb 79 fprintf(fp,"%s%s", opening_msg0, opening_msg1);
kenjiArai 0:308d4fafaafb 80 } else {
kenjiArai 0:308d4fafaafb 81 pc.printf("ERROR\r\n");
kenjiArai 0:308d4fafaafb 82 }
kenjiArai 0:308d4fafaafb 83 fclose(fp);
kenjiArai 0:308d4fafaafb 84 while (pc.readable()) {
kenjiArai 0:308d4fafaafb 85 char c = pc.getc(); // dummy read
kenjiArai 0:308d4fafaafb 86 }
kenjiArai 0:308d4fafaafb 87 while (true) {
kenjiArai 0:308d4fafaafb 88 uint32_t size = get_disk_freespace();
kenjiArai 0:308d4fafaafb 89 pc.printf("free %u ", size);
kenjiArai 0:308d4fafaafb 90 fp = fopen("/fs/mydata.txt", "a");
kenjiArai 0:308d4fafaafb 91 if (size <= DISK_SIZE_LIMIT) {
kenjiArai 0:308d4fafaafb 92 pc.printf("Reached RAM Disk size limitation!!\r\n");
kenjiArai 0:308d4fafaafb 93 break;
kenjiArai 0:308d4fafaafb 94 }
kenjiArai 0:308d4fafaafb 95 if(fp != 0) {
kenjiArai 0:308d4fafaafb 96 char tmp[64];
kenjiArai 0:308d4fafaafb 97 seconds = time(NULL);
kenjiArai 0:308d4fafaafb 98 strftime(tmp, 64, "DATE %H:%M:%S,%Y/%m/%d,", localtime(&seconds));
kenjiArai 0:308d4fafaafb 99 pc.printf(tmp);
kenjiArai 0:308d4fafaafb 100 fprintf(fp, "%s", tmp);
kenjiArai 0:308d4fafaafb 101 pc.printf("%08d;%08d;%08d;%08d;%08d;%08d\r\n",
kenjiArai 0:308d4fafaafb 102 ++data0, ++data1, ++data2, ++data3, ++data4, ++data5);
kenjiArai 0:308d4fafaafb 103 fprintf(fp, "%08d;%08d;%08d;%08d;%08d;%08d\r\n",
kenjiArai 0:308d4fafaafb 104 data0, data1, data2, data3, data4, data5);
kenjiArai 0:308d4fafaafb 105 } else {
kenjiArai 0:308d4fafaafb 106 pc.printf("ERROR\r\n");
kenjiArai 0:308d4fafaafb 107 }
kenjiArai 0:308d4fafaafb 108 fclose(fp);
kenjiArai 0:308d4fafaafb 109 Thread::wait(100);
kenjiArai 0:308d4fafaafb 110 if (user_sw == USER_SW_ON) {
kenjiArai 0:308d4fafaafb 111 break;
kenjiArai 0:308d4fafaafb 112 }
kenjiArai 0:308d4fafaafb 113 if (pc.readable()) {
kenjiArai 0:308d4fafaafb 114 mon();
kenjiArai 0:308d4fafaafb 115 }
kenjiArai 0:308d4fafaafb 116 led = !led;
kenjiArai 0:308d4fafaafb 117 }
kenjiArai 0:308d4fafaafb 118 while(true) {
kenjiArai 0:308d4fafaafb 119 mon();
kenjiArai 0:308d4fafaafb 120 NVIC_SystemReset();
kenjiArai 0:308d4fafaafb 121 }
kenjiArai 0:308d4fafaafb 122 }
kenjiArai 0:308d4fafaafb 123
kenjiArai 0:308d4fafaafb 124 void return_error (int ret_val)
kenjiArai 0:308d4fafaafb 125 {
kenjiArai 0:308d4fafaafb 126 if (ret_val) {
kenjiArai 0:308d4fafaafb 127 pc.printf("retrun error/Failure. %d\r\n", ret_val);
kenjiArai 0:308d4fafaafb 128 }
kenjiArai 0:308d4fafaafb 129 }
kenjiArai 0:308d4fafaafb 130
kenjiArai 0:308d4fafaafb 131 void errno_error (void* ret_val)
kenjiArai 0:308d4fafaafb 132 {
kenjiArai 0:308d4fafaafb 133 if (ret_val == NULL) {
kenjiArai 0:308d4fafaafb 134 pc.printf("error #/Failure. %d \r\n", errno);
kenjiArai 0:308d4fafaafb 135 }
kenjiArai 0:308d4fafaafb 136 }