Francesco Arrigo / Mbed OS AccellerationFileNV

AccellerationFileNV Assignment

Dependencies:   BSP_B-L475E-IOT01

main.cpp@25:65a9183a2178, 2018-09-26 (annotated)

Committer:
mbed_official
Date:
Wed Sep 26 15:01:07 2018 +0100
Revision:
25:65a9183a2178
Parent:
12:a07d0af60cc6
Child:
26:130bb1173866
Merge pull request #68 from ARMmbed/mbed-os-5.10.0-oob



Update to Mbed os 5.10.0

.

Commit copied from https://github.com/ARMmbed/mbed-os-example-filesystem

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:8e251d9511b8 1 /* mbed Microcontroller Library
mbed_official 0:8e251d9511b8 2 * Copyright (c) 2006-2013 ARM Limited
mbed_official 0:8e251d9511b8 3 *
mbed_official 0:8e251d9511b8 4 * Licensed under the Apache License, Version 2.0 (the "License");
mbed_official 0:8e251d9511b8 5 * you may not use this file except in compliance with the License.
mbed_official 0:8e251d9511b8 6 * You may obtain a copy of the License at
mbed_official 0:8e251d9511b8 7 *
mbed_official 0:8e251d9511b8 8 * http://www.apache.org/licenses/LICENSE-2.0
mbed_official 0:8e251d9511b8 9 *
mbed_official 0:8e251d9511b8 10 * Unless required by applicable law or agreed to in writing, software
mbed_official 0:8e251d9511b8 11 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 0:8e251d9511b8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 0:8e251d9511b8 13 * See the License for the specific language governing permissions and
mbed_official 0:8e251d9511b8 14 * limitations under the License.
mbed_official 0:8e251d9511b8 15 */
mbed_official 0:8e251d9511b8 16 #include "mbed.h"
mbed_official 0:8e251d9511b8 17 #include <stdio.h>
mbed_official 0:8e251d9511b8 18 #include <errno.h>
mbed_official 0:8e251d9511b8 19
mbed_official 0:8e251d9511b8 20 // Block devices
mbed_official 25:65a9183a2178 21 #if COMPONENT_SPIF
mbed_official 0:8e251d9511b8 22 #include "SPIFBlockDevice.h"
mbed_official 25:65a9183a2178 23 #endif
mbed_official 25:65a9183a2178 24
mbed_official 25:65a9183a2178 25 #if COMPONENT_DATAFLASH
mbed_official 1:2bfc377bcc2a 26 #include "DataFlashBlockDevice.h"
mbed_official 25:65a9183a2178 27 #endif
mbed_official 25:65a9183a2178 28
mbed_official 25:65a9183a2178 29 #if COMPONENT_SD
mbed_official 0:8e251d9511b8 30 #include "SDBlockDevice.h"
mbed_official 25:65a9183a2178 31 #endif
mbed_official 25:65a9183a2178 32
mbed_official 0:8e251d9511b8 33 #include "HeapBlockDevice.h"
mbed_official 0:8e251d9511b8 34
mbed_official 0:8e251d9511b8 35 // File systems
mbed_official 0:8e251d9511b8 36 #include "LittleFileSystem.h"
mbed_official 0:8e251d9511b8 37 #include "FATFileSystem.h"
mbed_official 0:8e251d9511b8 38
mbed_official 0:8e251d9511b8 39
mbed_official 0:8e251d9511b8 40 // Physical block device, can be any device that supports the BlockDevice API
mbed_official 0:8e251d9511b8 41 SPIFBlockDevice bd(
mbed_official 0:8e251d9511b8 42 MBED_CONF_SPIF_DRIVER_SPI_MOSI,
mbed_official 0:8e251d9511b8 43 MBED_CONF_SPIF_DRIVER_SPI_MISO,
mbed_official 0:8e251d9511b8 44 MBED_CONF_SPIF_DRIVER_SPI_CLK,
mbed_official 0:8e251d9511b8 45 MBED_CONF_SPIF_DRIVER_SPI_CS);
mbed_official 0:8e251d9511b8 46
mbed_official 0:8e251d9511b8 47 // File system declaration
mbed_official 0:8e251d9511b8 48 LittleFileSystem fs("fs");
mbed_official 0:8e251d9511b8 49
mbed_official 0:8e251d9511b8 50
mbed_official 0:8e251d9511b8 51 // Set up the button to trigger an erase
mbed_official 0:8e251d9511b8 52 InterruptIn irq(BUTTON1);
mbed_official 0:8e251d9511b8 53 void erase() {
mbed_official 0:8e251d9511b8 54 printf("Initializing the block device... ");
mbed_official 0:8e251d9511b8 55 fflush(stdout);
mbed_official 0:8e251d9511b8 56 int err = bd.init();
mbed_official 0:8e251d9511b8 57 printf("%s\n", (err ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 58 if (err) {
mbed_official 0:8e251d9511b8 59 error("error: %s (%d)\n", strerror(-err), err);
mbed_official 0:8e251d9511b8 60 }
mbed_official 0:8e251d9511b8 61
mbed_official 0:8e251d9511b8 62 printf("Erasing the block device... ");
mbed_official 0:8e251d9511b8 63 fflush(stdout);
mbed_official 0:8e251d9511b8 64 err = bd.erase(0, bd.size());
mbed_official 0:8e251d9511b8 65 printf("%s\n", (err ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 66 if (err) {
mbed_official 0:8e251d9511b8 67 error("error: %s (%d)\n", strerror(-err), err);
mbed_official 0:8e251d9511b8 68 }
mbed_official 0:8e251d9511b8 69
mbed_official 0:8e251d9511b8 70 printf("Deinitializing the block device... ");
mbed_official 0:8e251d9511b8 71 fflush(stdout);
mbed_official 0:8e251d9511b8 72 err = bd.deinit();
mbed_official 0:8e251d9511b8 73 printf("%s\n", (err ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 74 if (err) {
mbed_official 0:8e251d9511b8 75 error("error: %s (%d)\n", strerror(-err), err);
mbed_official 0:8e251d9511b8 76 }
mbed_official 0:8e251d9511b8 77 }
mbed_official 0:8e251d9511b8 78
mbed_official 0:8e251d9511b8 79
mbed_official 0:8e251d9511b8 80 // Entry point for the example
mbed_official 0:8e251d9511b8 81 int main() {
mbed_official 0:8e251d9511b8 82 printf("--- Mbed OS filesystem example ---\n");
mbed_official 0:8e251d9511b8 83
mbed_official 12:a07d0af60cc6 84 // Setup the erase event on button press, use the event queue
mbed_official 12:a07d0af60cc6 85 // to avoid running in interrupt context
mbed_official 12:a07d0af60cc6 86 irq.fall(mbed_event_queue()->event(erase));
mbed_official 0:8e251d9511b8 87
mbed_official 0:8e251d9511b8 88 // Try to mount the filesystem
mbed_official 0:8e251d9511b8 89 printf("Mounting the filesystem... ");
mbed_official 0:8e251d9511b8 90 fflush(stdout);
mbed_official 0:8e251d9511b8 91 int err = fs.mount(&bd);
mbed_official 0:8e251d9511b8 92 printf("%s\n", (err ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 93 if (err) {
mbed_official 0:8e251d9511b8 94 // Reformat if we can't mount the filesystem
mbed_official 0:8e251d9511b8 95 // this should only happen on the first boot
mbed_official 0:8e251d9511b8 96 printf("No filesystem found, formatting... ");
mbed_official 0:8e251d9511b8 97 fflush(stdout);
mbed_official 0:8e251d9511b8 98 err = fs.reformat(&bd);
mbed_official 0:8e251d9511b8 99 printf("%s\n", (err ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 100 if (err) {
mbed_official 0:8e251d9511b8 101 error("error: %s (%d)\n", strerror(-err), err);
mbed_official 0:8e251d9511b8 102 }
mbed_official 0:8e251d9511b8 103 }
mbed_official 0:8e251d9511b8 104
mbed_official 0:8e251d9511b8 105 // Open the numbers file
mbed_official 0:8e251d9511b8 106 printf("Opening \"/fs/numbers.txt\"... ");
mbed_official 0:8e251d9511b8 107 fflush(stdout);
mbed_official 0:8e251d9511b8 108 FILE *f = fopen("/fs/numbers.txt", "r+");
mbed_official 0:8e251d9511b8 109 printf("%s\n", (!f ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 110 if (!f) {
mbed_official 0:8e251d9511b8 111 // Create the numbers file if it doesn't exist
mbed_official 0:8e251d9511b8 112 printf("No file found, creating a new file... ");
mbed_official 0:8e251d9511b8 113 fflush(stdout);
mbed_official 0:8e251d9511b8 114 f = fopen("/fs/numbers.txt", "w+");
mbed_official 0:8e251d9511b8 115 printf("%s\n", (!f ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 116 if (!f) {
mbed_official 0:8e251d9511b8 117 error("error: %s (%d)\n", strerror(errno), -errno);
mbed_official 0:8e251d9511b8 118 }
mbed_official 0:8e251d9511b8 119
mbed_official 0:8e251d9511b8 120 for (int i = 0; i < 10; i++) {
mbed_official 0:8e251d9511b8 121 printf("\rWriting numbers (%d/%d)... ", i, 10);
mbed_official 0:8e251d9511b8 122 fflush(stdout);
mbed_official 0:8e251d9511b8 123 err = fprintf(f, " %d\n", i);
mbed_official 0:8e251d9511b8 124 if (err < 0) {
mbed_official 0:8e251d9511b8 125 printf("Fail :(\n");
mbed_official 0:8e251d9511b8 126 error("error: %s (%d)\n", strerror(errno), -errno);
mbed_official 0:8e251d9511b8 127 }
mbed_official 0:8e251d9511b8 128 }
mbed_official 0:8e251d9511b8 129 printf("\rWriting numbers (%d/%d)... OK\n", 10, 10);
mbed_official 0:8e251d9511b8 130
mbed_official 0:8e251d9511b8 131 printf("Seeking file... ");
mbed_official 0:8e251d9511b8 132 fflush(stdout);
mbed_official 0:8e251d9511b8 133 err = fseek(f, 0, SEEK_SET);
mbed_official 0:8e251d9511b8 134 printf("%s\n", (err < 0 ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 135 if (err < 0) {
mbed_official 0:8e251d9511b8 136 error("error: %s (%d)\n", strerror(errno), -errno);
mbed_official 0:8e251d9511b8 137 }
mbed_official 0:8e251d9511b8 138 }
mbed_official 0:8e251d9511b8 139
mbed_official 0:8e251d9511b8 140 // Go through and increment the numbers
mbed_official 0:8e251d9511b8 141 for (int i = 0; i < 10; i++) {
mbed_official 0:8e251d9511b8 142 printf("\rIncrementing numbers (%d/%d)... ", i, 10);
mbed_official 0:8e251d9511b8 143 fflush(stdout);
mbed_official 0:8e251d9511b8 144
mbed_official 0:8e251d9511b8 145 // Get current stream position
mbed_official 0:8e251d9511b8 146 long pos = ftell(f);
mbed_official 0:8e251d9511b8 147
mbed_official 0:8e251d9511b8 148 // Parse out the number and increment
mbed_official 0:8e251d9511b8 149 int32_t number;
mbed_official 0:8e251d9511b8 150 fscanf(f, "%d", &number);
mbed_official 0:8e251d9511b8 151 number += 1;
mbed_official 0:8e251d9511b8 152
mbed_official 0:8e251d9511b8 153 // Seek to beginning of number
mbed_official 0:8e251d9511b8 154 fseek(f, pos, SEEK_SET);
mbed_official 0:8e251d9511b8 155
mbed_official 0:8e251d9511b8 156 // Store number
mbed_official 0:8e251d9511b8 157 fprintf(f, " %d\n", number);
mbed_official 10:38d6b74b0eb7 158
mbed_official 10:38d6b74b0eb7 159 // Flush between write and read on same file
mbed_official 10:38d6b74b0eb7 160 fflush(f);
mbed_official 0:8e251d9511b8 161 }
mbed_official 0:8e251d9511b8 162 printf("\rIncrementing numbers (%d/%d)... OK\n", 10, 10);
mbed_official 0:8e251d9511b8 163
mbed_official 0:8e251d9511b8 164 // Close the file which also flushes any cached writes
mbed_official 0:8e251d9511b8 165 printf("Closing \"/fs/numbers.txt\"... ");
mbed_official 0:8e251d9511b8 166 fflush(stdout);
mbed_official 0:8e251d9511b8 167 err = fclose(f);
mbed_official 0:8e251d9511b8 168 printf("%s\n", (err < 0 ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 169 if (err < 0) {
mbed_official 0:8e251d9511b8 170 error("error: %s (%d)\n", strerror(errno), -errno);
mbed_official 0:8e251d9511b8 171 }
mbed_official 0:8e251d9511b8 172
mbed_official 0:8e251d9511b8 173 // Display the root directory
mbed_official 0:8e251d9511b8 174 printf("Opening the root directory... ");
mbed_official 0:8e251d9511b8 175 fflush(stdout);
mbed_official 0:8e251d9511b8 176 DIR *d = opendir("/fs/");
mbed_official 0:8e251d9511b8 177 printf("%s\n", (!d ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 178 if (!d) {
mbed_official 0:8e251d9511b8 179 error("error: %s (%d)\n", strerror(errno), -errno);
mbed_official 0:8e251d9511b8 180 }
mbed_official 0:8e251d9511b8 181
mbed_official 0:8e251d9511b8 182 printf("root directory:\n");
mbed_official 0:8e251d9511b8 183 while (true) {
mbed_official 0:8e251d9511b8 184 struct dirent *e = readdir(d);
mbed_official 0:8e251d9511b8 185 if (!e) {
mbed_official 0:8e251d9511b8 186 break;
mbed_official 0:8e251d9511b8 187 }
mbed_official 0:8e251d9511b8 188
mbed_official 0:8e251d9511b8 189 printf(" %s\n", e->d_name);
mbed_official 0:8e251d9511b8 190 }
mbed_official 0:8e251d9511b8 191
mbed_official 0:8e251d9511b8 192 printf("Closing the root directory... ");
mbed_official 0:8e251d9511b8 193 fflush(stdout);
mbed_official 0:8e251d9511b8 194 err = closedir(d);
mbed_official 0:8e251d9511b8 195 printf("%s\n", (err < 0 ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 196 if (err < 0) {
mbed_official 0:8e251d9511b8 197 error("error: %s (%d)\n", strerror(errno), -errno);
mbed_official 0:8e251d9511b8 198 }
mbed_official 0:8e251d9511b8 199
mbed_official 0:8e251d9511b8 200 // Display the numbers file
mbed_official 0:8e251d9511b8 201 printf("Opening \"/fs/numbers.txt\"... ");
mbed_official 0:8e251d9511b8 202 fflush(stdout);
mbed_official 0:8e251d9511b8 203 f = fopen("/fs/numbers.txt", "r");
mbed_official 0:8e251d9511b8 204 printf("%s\n", (!f ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 205 if (!f) {
mbed_official 0:8e251d9511b8 206 error("error: %s (%d)\n", strerror(errno), -errno);
mbed_official 0:8e251d9511b8 207 }
mbed_official 0:8e251d9511b8 208
mbed_official 0:8e251d9511b8 209 printf("numbers:\n");
mbed_official 0:8e251d9511b8 210 while (!feof(f)) {
mbed_official 0:8e251d9511b8 211 int c = fgetc(f);
mbed_official 0:8e251d9511b8 212 printf("%c", c);
mbed_official 0:8e251d9511b8 213 }
mbed_official 0:8e251d9511b8 214
mbed_official 0:8e251d9511b8 215 printf("\rClosing \"/fs/numbers.txt\"... ");
mbed_official 0:8e251d9511b8 216 fflush(stdout);
mbed_official 0:8e251d9511b8 217 err = fclose(f);
mbed_official 0:8e251d9511b8 218 printf("%s\n", (err < 0 ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 219 if (err < 0) {
mbed_official 0:8e251d9511b8 220 error("error: %s (%d)\n", strerror(errno), -errno);
mbed_official 0:8e251d9511b8 221 }
mbed_official 0:8e251d9511b8 222
mbed_official 0:8e251d9511b8 223 // Tidy up
mbed_official 0:8e251d9511b8 224 printf("Unmounting... ");
mbed_official 0:8e251d9511b8 225 fflush(stdout);
mbed_official 0:8e251d9511b8 226 err = fs.unmount();
mbed_official 0:8e251d9511b8 227 printf("%s\n", (err < 0 ? "Fail :(" : "OK"));
mbed_official 0:8e251d9511b8 228 if (err < 0) {
mbed_official 0:8e251d9511b8 229 error("error: %s (%d)\n", strerror(-err), err);
mbed_official 0:8e251d9511b8 230 }
mbed_official 0:8e251d9511b8 231
mbed_official 0:8e251d9511b8 232 printf("Mbed OS filesystem example done!\n");
mbed_official 0:8e251d9511b8 233 }
mbed_official 0:8e251d9511b8 234