QSPI external flash block device for file system on external flash for DISCO_L475VG_IOT01
Dependencies: BSP_B-L475E-IOT01
main.cpp@0:0ca082ff5da6, 2018-04-26 (annotated)
- Committer:
- DoronRaifman
- Date:
- Thu Apr 26 09:25:47 2018 +0000
- Revision:
- 0:0ca082ff5da6
QSPI external flash block device for file system on external flash; for ST DISCO_L475VG_IOT01
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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DoronRaifman | 0:0ca082ff5da6 | 1 | /* mbed Microcontroller Library |
DoronRaifman | 0:0ca082ff5da6 | 2 | * Copyright (c) 2006-2013 ARM Limited |
DoronRaifman | 0:0ca082ff5da6 | 3 | * |
DoronRaifman | 0:0ca082ff5da6 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
DoronRaifman | 0:0ca082ff5da6 | 5 | * you may not use this file except in compliance with the License. |
DoronRaifman | 0:0ca082ff5da6 | 6 | * You may obtain a copy of the License at |
DoronRaifman | 0:0ca082ff5da6 | 7 | * |
DoronRaifman | 0:0ca082ff5da6 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
DoronRaifman | 0:0ca082ff5da6 | 9 | * |
DoronRaifman | 0:0ca082ff5da6 | 10 | * Unless required by applicable law or agreed to in writing, software |
DoronRaifman | 0:0ca082ff5da6 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
DoronRaifman | 0:0ca082ff5da6 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
DoronRaifman | 0:0ca082ff5da6 | 13 | * See the License for the specific language governing permissions and |
DoronRaifman | 0:0ca082ff5da6 | 14 | * limitations under the License. |
DoronRaifman | 0:0ca082ff5da6 | 15 | */ |
DoronRaifman | 0:0ca082ff5da6 | 16 | #include "mbed.h" |
DoronRaifman | 0:0ca082ff5da6 | 17 | #include <stdio.h> |
DoronRaifman | 0:0ca082ff5da6 | 18 | #include <errno.h> |
DoronRaifman | 0:0ca082ff5da6 | 19 | |
DoronRaifman | 0:0ca082ff5da6 | 20 | // Block devices |
DoronRaifman | 0:0ca082ff5da6 | 21 | #include "QSPIExtFlashBlockDevice.h" |
DoronRaifman | 0:0ca082ff5da6 | 22 | |
DoronRaifman | 0:0ca082ff5da6 | 23 | // File systems |
DoronRaifman | 0:0ca082ff5da6 | 24 | #include "LittleFileSystem.h" |
DoronRaifman | 0:0ca082ff5da6 | 25 | //#include "FATFileSystem.h" |
DoronRaifman | 0:0ca082ff5da6 | 26 | |
DoronRaifman | 0:0ca082ff5da6 | 27 | |
DoronRaifman | 0:0ca082ff5da6 | 28 | // Physical block device, can be any device that supports the BlockDevice API |
DoronRaifman | 0:0ca082ff5da6 | 29 | QSPIExtFlashBlockDevice m_cBlockDevice; |
DoronRaifman | 0:0ca082ff5da6 | 30 | // File system declaration |
DoronRaifman | 0:0ca082ff5da6 | 31 | LittleFileSystem m_cFileSystem("fs"); |
DoronRaifman | 0:0ca082ff5da6 | 32 | //FATFileSystem m_cFileSystem("fs", &m_cBlockDevice); |
DoronRaifman | 0:0ca082ff5da6 | 33 | |
DoronRaifman | 0:0ca082ff5da6 | 34 | |
DoronRaifman | 0:0ca082ff5da6 | 35 | |
DoronRaifman | 0:0ca082ff5da6 | 36 | // Entry point for the example |
DoronRaifman | 0:0ca082ff5da6 | 37 | int main() |
DoronRaifman | 0:0ca082ff5da6 | 38 | { |
DoronRaifman | 0:0ca082ff5da6 | 39 | int nRc = 0; |
DoronRaifman | 0:0ca082ff5da6 | 40 | int err; |
DoronRaifman | 0:0ca082ff5da6 | 41 | bool bIsToEraseChip = false; |
DoronRaifman | 0:0ca082ff5da6 | 42 | bool bIsToFirstFormat = false; |
DoronRaifman | 0:0ca082ff5da6 | 43 | |
DoronRaifman | 0:0ca082ff5da6 | 44 | printf("===> Qspi External flash filesystem example ---\n"); |
DoronRaifman | 0:0ca082ff5da6 | 45 | if(bIsToEraseChip) |
DoronRaifman | 0:0ca082ff5da6 | 46 | { |
DoronRaifman | 0:0ca082ff5da6 | 47 | nRc = m_cBlockDevice.init(); |
DoronRaifman | 0:0ca082ff5da6 | 48 | if(nRc != 0) |
DoronRaifman | 0:0ca082ff5da6 | 49 | { |
DoronRaifman | 0:0ca082ff5da6 | 50 | error("BlockDevice init error: %d\n", nRc); |
DoronRaifman | 0:0ca082ff5da6 | 51 | } |
DoronRaifman | 0:0ca082ff5da6 | 52 | nRc = m_cBlockDevice.EraseAllFlashMemory(); |
DoronRaifman | 0:0ca082ff5da6 | 53 | if(nRc != 0) |
DoronRaifman | 0:0ca082ff5da6 | 54 | { |
DoronRaifman | 0:0ca082ff5da6 | 55 | error("BlockDevice init error: %d\n", nRc); |
DoronRaifman | 0:0ca082ff5da6 | 56 | } |
DoronRaifman | 0:0ca082ff5da6 | 57 | nRc = m_cBlockDevice.deinit(); |
DoronRaifman | 0:0ca082ff5da6 | 58 | } |
DoronRaifman | 0:0ca082ff5da6 | 59 | |
DoronRaifman | 0:0ca082ff5da6 | 60 | // Try to mount the filesystem |
DoronRaifman | 0:0ca082ff5da6 | 61 | if(!bIsToFirstFormat) |
DoronRaifman | 0:0ca082ff5da6 | 62 | { |
DoronRaifman | 0:0ca082ff5da6 | 63 | printf("Mounting the filesystem... \n"); |
DoronRaifman | 0:0ca082ff5da6 | 64 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 65 | err = m_cFileSystem.mount((BlockDevice *) &m_cBlockDevice); |
DoronRaifman | 0:0ca082ff5da6 | 66 | printf("Mount %s, err=%d\n", (err ? "Fail :(" : "OK"), err); |
DoronRaifman | 0:0ca082ff5da6 | 67 | if(err) |
DoronRaifman | 0:0ca082ff5da6 | 68 | { |
DoronRaifman | 0:0ca082ff5da6 | 69 | printf("No filesystem found, "); |
DoronRaifman | 0:0ca082ff5da6 | 70 | } |
DoronRaifman | 0:0ca082ff5da6 | 71 | } |
DoronRaifman | 0:0ca082ff5da6 | 72 | else |
DoronRaifman | 0:0ca082ff5da6 | 73 | { |
DoronRaifman | 0:0ca082ff5da6 | 74 | err = -1; |
DoronRaifman | 0:0ca082ff5da6 | 75 | } |
DoronRaifman | 0:0ca082ff5da6 | 76 | if (err) |
DoronRaifman | 0:0ca082ff5da6 | 77 | { |
DoronRaifman | 0:0ca082ff5da6 | 78 | // Reformat if we can't mount the filesystem |
DoronRaifman | 0:0ca082ff5da6 | 79 | // this should only happen on the first boot |
DoronRaifman | 0:0ca082ff5da6 | 80 | printf("Formatting... \n"); |
DoronRaifman | 0:0ca082ff5da6 | 81 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 82 | err = m_cFileSystem.reformat((BlockDevice *) &m_cBlockDevice); |
DoronRaifman | 0:0ca082ff5da6 | 83 | printf("Format %s, err=%d\n", (err ? "Fail :(" : "OK"), err); |
DoronRaifman | 0:0ca082ff5da6 | 84 | printf("Formatting terminated... \n"); |
DoronRaifman | 0:0ca082ff5da6 | 85 | } |
DoronRaifman | 0:0ca082ff5da6 | 86 | |
DoronRaifman | 0:0ca082ff5da6 | 87 | // Open the numbers file |
DoronRaifman | 0:0ca082ff5da6 | 88 | if(err == 0) |
DoronRaifman | 0:0ca082ff5da6 | 89 | { |
DoronRaifman | 0:0ca082ff5da6 | 90 | printf("Opening \"/fs/numbers.txt\"... "); |
DoronRaifman | 0:0ca082ff5da6 | 91 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 92 | FILE *f = fopen("/fs/numbers.txt", "r+"); |
DoronRaifman | 0:0ca082ff5da6 | 93 | printf("%s\n", (!f ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 94 | if (!f) { |
DoronRaifman | 0:0ca082ff5da6 | 95 | // Create the numbers file if it doesn't exist |
DoronRaifman | 0:0ca082ff5da6 | 96 | printf("No file found, creating a new file... "); |
DoronRaifman | 0:0ca082ff5da6 | 97 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 98 | f = fopen("/fs/numbers.txt", "w+"); |
DoronRaifman | 0:0ca082ff5da6 | 99 | printf("%s\n", (!f ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 100 | if (!f) { |
DoronRaifman | 0:0ca082ff5da6 | 101 | error("error: %s (%d)\n", strerror(errno), -errno); |
DoronRaifman | 0:0ca082ff5da6 | 102 | } |
DoronRaifman | 0:0ca082ff5da6 | 103 | |
DoronRaifman | 0:0ca082ff5da6 | 104 | for (int i = 0; i < 10; i++) { |
DoronRaifman | 0:0ca082ff5da6 | 105 | printf("\rWriting numbers (%d/%d)... ", i, 10); |
DoronRaifman | 0:0ca082ff5da6 | 106 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 107 | err = fprintf(f, " %d\n", i); |
DoronRaifman | 0:0ca082ff5da6 | 108 | if (err < 0) { |
DoronRaifman | 0:0ca082ff5da6 | 109 | printf("Fail :(\n"); |
DoronRaifman | 0:0ca082ff5da6 | 110 | error("error: %s (%d)\n", strerror(errno), -errno); |
DoronRaifman | 0:0ca082ff5da6 | 111 | } |
DoronRaifman | 0:0ca082ff5da6 | 112 | } |
DoronRaifman | 0:0ca082ff5da6 | 113 | printf("\rWriting numbers (%d/%d)... OK\n", 10, 10); |
DoronRaifman | 0:0ca082ff5da6 | 114 | |
DoronRaifman | 0:0ca082ff5da6 | 115 | printf("Seeking file... "); |
DoronRaifman | 0:0ca082ff5da6 | 116 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 117 | err = fseek(f, 0, SEEK_SET); |
DoronRaifman | 0:0ca082ff5da6 | 118 | printf("%s\n", (err < 0 ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 119 | if (err < 0) { |
DoronRaifman | 0:0ca082ff5da6 | 120 | error("error: %s (%d)\n", strerror(errno), -errno); |
DoronRaifman | 0:0ca082ff5da6 | 121 | } |
DoronRaifman | 0:0ca082ff5da6 | 122 | } |
DoronRaifman | 0:0ca082ff5da6 | 123 | |
DoronRaifman | 0:0ca082ff5da6 | 124 | // Go through and increment the numbers |
DoronRaifman | 0:0ca082ff5da6 | 125 | for (int i = 0; i < 10; i++) { |
DoronRaifman | 0:0ca082ff5da6 | 126 | printf("\rIncrementing numbers (%d/%d)... ", i, 10); |
DoronRaifman | 0:0ca082ff5da6 | 127 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 128 | |
DoronRaifman | 0:0ca082ff5da6 | 129 | // Get current stream position |
DoronRaifman | 0:0ca082ff5da6 | 130 | long pos = ftell(f); |
DoronRaifman | 0:0ca082ff5da6 | 131 | |
DoronRaifman | 0:0ca082ff5da6 | 132 | // Parse out the number and increment |
DoronRaifman | 0:0ca082ff5da6 | 133 | int32_t number; |
DoronRaifman | 0:0ca082ff5da6 | 134 | fscanf(f, "%d", &number); |
DoronRaifman | 0:0ca082ff5da6 | 135 | number += 1; |
DoronRaifman | 0:0ca082ff5da6 | 136 | |
DoronRaifman | 0:0ca082ff5da6 | 137 | // Seek to beginning of number |
DoronRaifman | 0:0ca082ff5da6 | 138 | fseek(f, pos, SEEK_SET); |
DoronRaifman | 0:0ca082ff5da6 | 139 | |
DoronRaifman | 0:0ca082ff5da6 | 140 | // Store number |
DoronRaifman | 0:0ca082ff5da6 | 141 | fprintf(f, " %d\n", number); |
DoronRaifman | 0:0ca082ff5da6 | 142 | } |
DoronRaifman | 0:0ca082ff5da6 | 143 | printf("\rIncrementing numbers (%d/%d)... OK\n", 10, 10); |
DoronRaifman | 0:0ca082ff5da6 | 144 | |
DoronRaifman | 0:0ca082ff5da6 | 145 | // Close the file which also flushes any cached writes |
DoronRaifman | 0:0ca082ff5da6 | 146 | printf("Closing \"/fs/numbers.txt\"... "); |
DoronRaifman | 0:0ca082ff5da6 | 147 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 148 | err = fclose(f); |
DoronRaifman | 0:0ca082ff5da6 | 149 | printf("%s\n", (err < 0 ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 150 | if (err < 0) { |
DoronRaifman | 0:0ca082ff5da6 | 151 | error("error: %s (%d)\n", strerror(errno), -errno); |
DoronRaifman | 0:0ca082ff5da6 | 152 | } |
DoronRaifman | 0:0ca082ff5da6 | 153 | |
DoronRaifman | 0:0ca082ff5da6 | 154 | // Display the root directory |
DoronRaifman | 0:0ca082ff5da6 | 155 | printf("Opening the root directory... "); |
DoronRaifman | 0:0ca082ff5da6 | 156 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 157 | DIR *d = opendir("/fs/"); |
DoronRaifman | 0:0ca082ff5da6 | 158 | printf("%s\n", (!d ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 159 | if (!d) { |
DoronRaifman | 0:0ca082ff5da6 | 160 | error("error: %s (%d)\n", strerror(errno), -errno); |
DoronRaifman | 0:0ca082ff5da6 | 161 | } |
DoronRaifman | 0:0ca082ff5da6 | 162 | |
DoronRaifman | 0:0ca082ff5da6 | 163 | printf("root directory:\n"); |
DoronRaifman | 0:0ca082ff5da6 | 164 | while (true) { |
DoronRaifman | 0:0ca082ff5da6 | 165 | struct dirent *e = readdir(d); |
DoronRaifman | 0:0ca082ff5da6 | 166 | if (!e) { |
DoronRaifman | 0:0ca082ff5da6 | 167 | break; |
DoronRaifman | 0:0ca082ff5da6 | 168 | } |
DoronRaifman | 0:0ca082ff5da6 | 169 | |
DoronRaifman | 0:0ca082ff5da6 | 170 | printf(" %s\n", e->d_name); |
DoronRaifman | 0:0ca082ff5da6 | 171 | } |
DoronRaifman | 0:0ca082ff5da6 | 172 | |
DoronRaifman | 0:0ca082ff5da6 | 173 | printf("Closing the root directory... "); |
DoronRaifman | 0:0ca082ff5da6 | 174 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 175 | err = closedir(d); |
DoronRaifman | 0:0ca082ff5da6 | 176 | printf("%s\n", (err < 0 ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 177 | if (err < 0) { |
DoronRaifman | 0:0ca082ff5da6 | 178 | error("error: %s (%d)\n", strerror(errno), -errno); |
DoronRaifman | 0:0ca082ff5da6 | 179 | } |
DoronRaifman | 0:0ca082ff5da6 | 180 | |
DoronRaifman | 0:0ca082ff5da6 | 181 | // Display the numbers file |
DoronRaifman | 0:0ca082ff5da6 | 182 | printf("Opening \"/fs/numbers.txt\"... "); |
DoronRaifman | 0:0ca082ff5da6 | 183 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 184 | f = fopen("/fs/numbers.txt", "r"); |
DoronRaifman | 0:0ca082ff5da6 | 185 | printf("%s\n", (!f ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 186 | if (!f) { |
DoronRaifman | 0:0ca082ff5da6 | 187 | error("error: %s (%d)\n", strerror(errno), -errno); |
DoronRaifman | 0:0ca082ff5da6 | 188 | } |
DoronRaifman | 0:0ca082ff5da6 | 189 | |
DoronRaifman | 0:0ca082ff5da6 | 190 | printf("numbers:\n"); |
DoronRaifman | 0:0ca082ff5da6 | 191 | while (!feof(f)) { |
DoronRaifman | 0:0ca082ff5da6 | 192 | int c = fgetc(f); |
DoronRaifman | 0:0ca082ff5da6 | 193 | printf("%c", c); |
DoronRaifman | 0:0ca082ff5da6 | 194 | } |
DoronRaifman | 0:0ca082ff5da6 | 195 | |
DoronRaifman | 0:0ca082ff5da6 | 196 | printf("\rClosing \"/fs/numbers.txt\"... "); |
DoronRaifman | 0:0ca082ff5da6 | 197 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 198 | err = fclose(f); |
DoronRaifman | 0:0ca082ff5da6 | 199 | printf("%s\n", (err < 0 ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 200 | if (err < 0) |
DoronRaifman | 0:0ca082ff5da6 | 201 | { |
DoronRaifman | 0:0ca082ff5da6 | 202 | error("error: %s (%d)\n", strerror(errno), -errno); |
DoronRaifman | 0:0ca082ff5da6 | 203 | } |
DoronRaifman | 0:0ca082ff5da6 | 204 | |
DoronRaifman | 0:0ca082ff5da6 | 205 | // Tidy up |
DoronRaifman | 0:0ca082ff5da6 | 206 | printf("Unmounting... "); |
DoronRaifman | 0:0ca082ff5da6 | 207 | fflush(stdout); |
DoronRaifman | 0:0ca082ff5da6 | 208 | err = m_cFileSystem.unmount(); |
DoronRaifman | 0:0ca082ff5da6 | 209 | printf("%s\n", (err < 0 ? "Fail :(" : "OK")); |
DoronRaifman | 0:0ca082ff5da6 | 210 | if (err < 0) |
DoronRaifman | 0:0ca082ff5da6 | 211 | { |
DoronRaifman | 0:0ca082ff5da6 | 212 | error("error: %s (%d)\n", strerror(-err), err); |
DoronRaifman | 0:0ca082ff5da6 | 213 | } |
DoronRaifman | 0:0ca082ff5da6 | 214 | } |
DoronRaifman | 0:0ca082ff5da6 | 215 | m_cBlockDevice.deinit(); |
DoronRaifman | 0:0ca082ff5da6 | 216 | |
DoronRaifman | 0:0ca082ff5da6 | 217 | printf("==> Qspi External flash filesystem example done!\n"); |
DoronRaifman | 0:0ca082ff5da6 | 218 | } |
DoronRaifman | 0:0ca082ff5da6 | 219 |