microSD Card control function for DISCO-F769NI based on BD_SD_DISCO_F746NG library by Roy Krikke
Dependencies: BD_SD_DISCO_F769NI BSP_DISCO_F769NI
Fork of DISCO-F746NG_BLOCK_DEVICE_WITH_FAT_FILESYSTEM_ON_SDCARD by
Please refer following my Notebook page.
/users/kenjiArai/notebook/sd-card-control-new/#
main.cpp@3:7f991a3d4e71, 2018-04-04 (annotated)
- Committer:
- roykrikke
- Date:
- Wed Apr 04 19:49:22 2018 +0000
- Revision:
- 3:7f991a3d4e71
- Parent:
- 2:993735af824b
- Child:
- 4:0f7797c2d3fe
Code Style & Formatting
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
roykrikke | 1:ffacc9d0b308 | 1 | /* Example file of using SD/MMC Block device Library for MBED-OS |
roykrikke | 1:ffacc9d0b308 | 2 | * Copyright 2017 Roy Krikke |
roykrikke | 3:7f991a3d4e71 | 3 | * |
roykrikke | 1:ffacc9d0b308 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
roykrikke | 1:ffacc9d0b308 | 5 | * you may not use this file except in compliance with the License. |
roykrikke | 1:ffacc9d0b308 | 6 | * You may obtain a copy of the License at |
roykrikke | 3:7f991a3d4e71 | 7 | * |
roykrikke | 1:ffacc9d0b308 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
roykrikke | 3:7f991a3d4e71 | 9 | * |
roykrikke | 1:ffacc9d0b308 | 10 | * Unless required by applicable law or agreed to in writing, software |
roykrikke | 1:ffacc9d0b308 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
roykrikke | 1:ffacc9d0b308 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
roykrikke | 1:ffacc9d0b308 | 13 | * See the License for the specific language governing permissions and |
roykrikke | 1:ffacc9d0b308 | 14 | * limitations under the License. |
roykrikke | 1:ffacc9d0b308 | 15 | * |
roykrikke | 1:ffacc9d0b308 | 16 | */ |
roykrikke | 1:ffacc9d0b308 | 17 | |
roykrikke | 0:4cdf28a602a8 | 18 | #include "mbed.h" |
roykrikke | 2:993735af824b | 19 | #include "FATFileSystem.h" |
roykrikke | 3:7f991a3d4e71 | 20 | #include "SDBlockDeviceDISCOF746NG.h" |
roykrikke | 2:993735af824b | 21 | #include <stdio.h> |
roykrikke | 2:993735af824b | 22 | #include <errno.h> |
roykrikke | 0:4cdf28a602a8 | 23 | |
roykrikke | 0:4cdf28a602a8 | 24 | DigitalOut led (LED1); |
roykrikke | 0:4cdf28a602a8 | 25 | |
roykrikke | 0:4cdf28a602a8 | 26 | // Instantiate the Block Device for sd card on DISCO-F746NG |
roykrikke | 3:7f991a3d4e71 | 27 | SDBlockDeviceDISCOF746NG bd; |
roykrikke | 2:993735af824b | 28 | FATFileSystem fs ("fs"); |
roykrikke | 2:993735af824b | 29 | |
roykrikke | 2:993735af824b | 30 | void |
roykrikke | 3:7f991a3d4e71 | 31 | return_error (int ret_val) |
roykrikke | 3:7f991a3d4e71 | 32 | { |
roykrikke | 3:7f991a3d4e71 | 33 | if(ret_val) |
roykrikke | 3:7f991a3d4e71 | 34 | printf ("Failure. %d\r\n", ret_val); |
roykrikke | 3:7f991a3d4e71 | 35 | else |
roykrikke | 3:7f991a3d4e71 | 36 | printf ("done.\r\n"); |
roykrikke | 2:993735af824b | 37 | } |
roykrikke | 2:993735af824b | 38 | |
roykrikke | 2:993735af824b | 39 | void |
roykrikke | 3:7f991a3d4e71 | 40 | errno_error (void* ret_val) |
roykrikke | 3:7f991a3d4e71 | 41 | { |
roykrikke | 3:7f991a3d4e71 | 42 | if(ret_val == NULL) |
roykrikke | 3:7f991a3d4e71 | 43 | printf (" Failure. %d \r\n", errno); |
roykrikke | 3:7f991a3d4e71 | 44 | else |
roykrikke | 3:7f991a3d4e71 | 45 | printf (" done.\r\n"); |
roykrikke | 2:993735af824b | 46 | } |
roykrikke | 0:4cdf28a602a8 | 47 | |
roykrikke | 0:4cdf28a602a8 | 48 | int |
roykrikke | 3:7f991a3d4e71 | 49 | main () |
roykrikke | 3:7f991a3d4e71 | 50 | { |
roykrikke | 3:7f991a3d4e71 | 51 | Serial pc (SERIAL_TX, SERIAL_RX); |
roykrikke | 3:7f991a3d4e71 | 52 | pc.baud(115200); |
roykrikke | 3:7f991a3d4e71 | 53 | printf("Start\n"); |
roykrikke | 0:4cdf28a602a8 | 54 | |
roykrikke | 3:7f991a3d4e71 | 55 | int error = 0; |
roykrikke | 3:7f991a3d4e71 | 56 | printf("Welcome to the filesystem example.\r\n" |
roykrikke | 3:7f991a3d4e71 | 57 | "Formatting a FAT, RAM-backed filesystem. "); |
roykrikke | 3:7f991a3d4e71 | 58 | error = FATFileSystem::format(&bd); |
roykrikke | 3:7f991a3d4e71 | 59 | return_error(error); |
roykrikke | 2:993735af824b | 60 | |
roykrikke | 3:7f991a3d4e71 | 61 | printf("Mounting the filesystem on \"/fs\". "); |
roykrikke | 3:7f991a3d4e71 | 62 | error = fs.mount(&bd); |
roykrikke | 3:7f991a3d4e71 | 63 | return_error(error); |
roykrikke | 2:993735af824b | 64 | |
roykrikke | 3:7f991a3d4e71 | 65 | printf("Opening a new file, numbers.txt."); |
roykrikke | 3:7f991a3d4e71 | 66 | FILE* fd = fopen("/fs/numbers.txt", "w"); |
roykrikke | 3:7f991a3d4e71 | 67 | errno_error(fd); |
roykrikke | 2:993735af824b | 68 | |
roykrikke | 3:7f991a3d4e71 | 69 | for (int i = 0; i < 20; i++) { |
roykrikke | 3:7f991a3d4e71 | 70 | printf("Writing decimal numbers to a file (%d/20)\r", i); |
roykrikke | 3:7f991a3d4e71 | 71 | fprintf(fd, "%d\r\n", i); |
roykrikke | 3:7f991a3d4e71 | 72 | } |
roykrikke | 3:7f991a3d4e71 | 73 | printf("Writing decimal numbers to a file (20/20) done.\r\n"); |
roykrikke | 2:993735af824b | 74 | |
roykrikke | 3:7f991a3d4e71 | 75 | printf("Closing file."); |
roykrikke | 3:7f991a3d4e71 | 76 | fclose(fd); |
roykrikke | 3:7f991a3d4e71 | 77 | printf(" done.\r\n"); |
roykrikke | 0:4cdf28a602a8 | 78 | |
roykrikke | 3:7f991a3d4e71 | 79 | printf("Re-opening file read-only."); |
roykrikke | 3:7f991a3d4e71 | 80 | fd = fopen("/fs/numbers.txt", "r"); |
roykrikke | 3:7f991a3d4e71 | 81 | errno_error(fd); |
roykrikke | 2:993735af824b | 82 | |
roykrikke | 3:7f991a3d4e71 | 83 | printf("Dumping file to screen.\r\n"); |
roykrikke | 3:7f991a3d4e71 | 84 | char buff[16] = { 0 }; |
roykrikke | 3:7f991a3d4e71 | 85 | while(!feof (fd)) { |
roykrikke | 3:7f991a3d4e71 | 86 | int size = fread(&buff[0], 1, 15, fd); |
roykrikke | 3:7f991a3d4e71 | 87 | fwrite(&buff[0], 1, size, stdout); |
roykrikke | 3:7f991a3d4e71 | 88 | } |
roykrikke | 3:7f991a3d4e71 | 89 | printf("EOF.\r\n"); |
roykrikke | 0:4cdf28a602a8 | 90 | |
roykrikke | 3:7f991a3d4e71 | 91 | printf("Closing file."); |
roykrikke | 3:7f991a3d4e71 | 92 | fclose(fd); |
roykrikke | 3:7f991a3d4e71 | 93 | printf(" done.\r\n"); |
roykrikke | 2:993735af824b | 94 | |
roykrikke | 3:7f991a3d4e71 | 95 | printf("Opening root directory."); |
roykrikke | 3:7f991a3d4e71 | 96 | DIR* dir = opendir("/fs/"); |
roykrikke | 3:7f991a3d4e71 | 97 | errno_error(fd); |
roykrikke | 2:993735af824b | 98 | |
roykrikke | 3:7f991a3d4e71 | 99 | struct dirent* de; |
roykrikke | 3:7f991a3d4e71 | 100 | printf("Printing all filenames:\r\n"); |
roykrikke | 3:7f991a3d4e71 | 101 | while((de = readdir (dir)) != NULL) { |
roykrikke | 3:7f991a3d4e71 | 102 | printf(" %s\r\n", &(de->d_name)[0]); |
roykrikke | 3:7f991a3d4e71 | 103 | } |
roykrikke | 0:4cdf28a602a8 | 104 | |
roykrikke | 3:7f991a3d4e71 | 105 | printf("Closeing root directory. "); |
roykrikke | 3:7f991a3d4e71 | 106 | error = closedir(dir); |
roykrikke | 3:7f991a3d4e71 | 107 | return_error(error); |
roykrikke | 3:7f991a3d4e71 | 108 | printf("Filesystem Demo complete.\r\n"); |
roykrikke | 0:4cdf28a602a8 | 109 | |
roykrikke | 3:7f991a3d4e71 | 110 | // Blink led with 2 Hz |
roykrikke | 3:7f991a3d4e71 | 111 | while(true) { |
roykrikke | 3:7f991a3d4e71 | 112 | led = !led; |
roykrikke | 3:7f991a3d4e71 | 113 | wait (0.5); |
roykrikke | 3:7f991a3d4e71 | 114 | } |
roykrikke | 0:4cdf28a602a8 | 115 | } |