--- /dev/null
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <peripheral_clk_config.h>
+#include "filesystem.h"
+#include "watch.h"
+#include "lfs.h"
+#include "hpl_flash.h"
+
+int lfs_storage_read(const struct lfs_config *cfg, lfs_block_t block, lfs_off_t off, void *buffer, lfs_size_t size);
+int lfs_storage_prog(const struct lfs_config *cfg, lfs_block_t block, lfs_off_t off, const void *buffer, lfs_size_t size);
+int lfs_storage_erase(const struct lfs_config *cfg, lfs_block_t block);
+int lfs_storage_sync(const struct lfs_config *cfg);
+
+int lfs_storage_read(const struct lfs_config *cfg, lfs_block_t block, lfs_off_t off, void *buffer, lfs_size_t size) {
+ (void) cfg;
+ return !watch_storage_read(block, off, (void *)buffer, size);
+}
+
+int lfs_storage_prog(const struct lfs_config *cfg, lfs_block_t block, lfs_off_t off, const void *buffer, lfs_size_t size) {
+ (void) cfg;
+ return !watch_storage_write(block, off, (void *)buffer, size);
+}
+
+int lfs_storage_erase(const struct lfs_config *cfg, lfs_block_t block) {
+ (void) cfg;
+ return !watch_storage_erase(block);
+}
+
+int lfs_storage_sync(const struct lfs_config *cfg) {
+ (void) cfg;
+ return !watch_storage_sync();
+}
+
+const struct lfs_config cfg = {
+ // block device operations
+ .read = lfs_storage_read,
+ .prog = lfs_storage_prog,
+ .erase = lfs_storage_erase,
+ .sync = lfs_storage_sync,
+
+ // block device configuration
+ .read_size = 16,
+ .prog_size = NVMCTRL_PAGE_SIZE,
+ .block_size = NVMCTRL_ROW_SIZE,
+ .block_count = NVMCTRL_RWWEE_PAGES / 4,
+ .cache_size = NVMCTRL_PAGE_SIZE,
+ .lookahead_size = 16,
+ .block_cycles = 100,
+};
+
+static lfs_t lfs;
+static lfs_file_t file;
+static struct lfs_info info;
+
+static int _traverse_df_cb(void *p, lfs_block_t block) {
+ (void) block;
+ uint32_t *nb = p;
+ *nb += 1;
+ return 0;
+}
+
+int filesystem_get_free_space(void) {
+ int err;
+
+ uint32_t free_blocks = 0;
+ err = lfs_fs_traverse(&lfs, _traverse_df_cb, &free_blocks);
+ if(err < 0){
+ return err;
+ }
+
+ uint32_t available = cfg.block_count * cfg.block_size - free_blocks * cfg.block_size;
+
+ return available;
+}
+
+static int filesystem_ls(lfs_t *lfs, const char *path) {
+ lfs_dir_t dir;
+ int err = lfs_dir_open(lfs, &dir, path);
+ if (err) {
+ return err;
+ }
+
+ struct lfs_info info;
+ while (true) {
+ int res = lfs_dir_read(lfs, &dir, &info);
+ if (res < 0) {
+ return res;
+ }
+
+ if (res == 0) {
+ break;
+ }
+
+ switch (info.type) {
+ case LFS_TYPE_REG: printf("file "); break;
+ case LFS_TYPE_DIR: printf("dir "); break;
+ default: printf("? "); break;
+ }
+
+ printf("%4ld bytes ", info.size);
+
+ printf("%s\n", info.name);
+ }
+
+ err = lfs_dir_close(lfs, &dir);
+ if (err) {
+ return err;
+ }
+
+ return 0;
+}
+
+bool filesystem_init(void) {
+ int err = lfs_mount(&lfs, &cfg);
+
+ // reformat if we can't mount the filesystem
+ // this should only happen on the first boot
+ if (err) {
+ err = lfs_format(&lfs, &cfg);
+ if (err) return false;
+ err = lfs_mount(&lfs, &cfg) == LFS_ERR_OK;
+ }
+
+ return err == LFS_ERR_OK;
+}
+
+bool filesystem_file_exists(char *filename) {
+ info.type = 0;
+ lfs_stat(&lfs, filename, &info);
+ return info.type == LFS_TYPE_REG;
+}
+
+bool filesystem_rm(char *filename) {
+ info.type = 0;
+ lfs_stat(&lfs, filename, &info);
+ if (filesystem_file_exists(filename)) {
+ return lfs_remove(&lfs, filename) == LFS_ERR_OK;
+ } else {
+ printf("rm: %s: No such file\n", filename);
+ return false;
+ }
+}
+
+static int32_t filesystem_get_file_size(char *filename) {
+ if (filesystem_file_exists(filename)) {
+ return info.size; // info struct was just populated by filesystem_file_exists
+ }
+
+ return -1;
+}
+
+bool filesystem_read_file(char *filename, char *buf, int32_t length) {
+ memset(buf, 0, length);
+ int32_t file_size = filesystem_get_file_size(filename);
+ if (file_size > 0) {
+ int err = lfs_file_open(&lfs, &file, filename, LFS_O_RDONLY);
+ if (err) return false;
+ err = lfs_file_read(&lfs, &file, buf, min(length, file_size));
+ if (err) return false;
+ return lfs_file_close(&lfs, &file) == LFS_ERR_OK;
+ }
+
+ return false;
+}
+
+static void filesystem_cat(char *filename) {
+ info.type = 0;
+ lfs_stat(&lfs, filename, &info);
+ if (filesystem_file_exists(filename)) {
+ if (info.size > 0) {
+ char *buf = malloc(info.size + 1);
+ filesystem_read_file(filename, buf, info.size);
+ printf("%s\n", buf);
+ free(buf);
+ } else {
+ printf("\n");
+ }
+ } else {
+ printf("cat: %s: No such file\n", filename);
+ }
+}
+
+bool filesystem_write_file(char *filename, char *text, int32_t length) {
+ int err = lfs_file_open(&lfs, &file, filename, LFS_O_RDWR | LFS_O_CREAT | LFS_O_TRUNC);
+ if (err) return false;
+ err = lfs_file_write(&lfs, &file, text, length);
+ if (err) return false;
+ return lfs_file_close(&lfs, &file) == LFS_ERR_OK;
+}
+
+void filesystem_process_command(char *line) {
+ printf("$ %s", line);
+ char *command = strtok(line, " \n");
+
+ if (strcmp(command, "ls") == 0) {
+ char *directory = strtok(NULL, " \n");
+ if (directory == NULL) {
+ filesystem_ls(&lfs, "/");
+ } else {
+ printf("usage: ls\n");
+ }
+ } else if (strcmp(command, "cat") == 0) {
+ char *filename = strtok(NULL, " \n");
+ if (filename == NULL) {
+ printf("usage: cat file\n");
+ } else {
+ filesystem_cat(filename);
+ }
+ } else if (strcmp(command, "df") == 0) {
+ printf("free space: %d bytes\n", filesystem_get_free_space());
+ } else if (strcmp(command, "rm") == 0) {
+ char *filename = strtok(NULL, " \n");
+ if (filename == NULL) {
+ printf("usage: rm file\n");
+ } else {
+ filesystem_rm(filename);
+ }
+ } else if (strcmp(command, "echo") == 0) {
+ char *text = malloc(248);
+ memset(text, 0, 248);
+ size_t pos = 0;
+ char *word = strtok(NULL, " \n");
+ while (strcmp(word, ">")) {
+ sprintf(text + pos, "%s ", word);
+ pos += strlen(word) + 1;
+ word = strtok(NULL, " \n");
+ if (word == NULL) break;
+ }
+ text[strlen(text) - 1] = 0;
+ char *filename = strtok(NULL, " \n");
+ if (filename == NULL) {
+ printf("usage: echo text > file\n");
+ } else if (strchr(filename, '/') || strchr(filename, '\\')) {
+ printf("subdirectories are not supported\n");
+ } else {
+ filesystem_write_file(filename, text, strlen(text));
+ }
+ free(text);
+ } else {
+ printf("%s: command not found\n", command);
+ }
+}
--- /dev/null
+/*
+ * MIT License
+ *
+ * Copyright (c) 2022 Joey Castillo
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef FILESYSTEM_H_
+#define FILESYSTEM_H_
+#include <stdio.h>
+#include <stdbool.h>
+#include "watch.h"
+
+/** @brief Initializes and mounts the tiny 8kb filesystem, formatting it if need be.
+ * @return true if the filesystem was mounted successfully.
+ */
+bool filesystem_init(void);
+
+/** @brief Gets the space available on the filesystem.
+ * @return the free space in bytes
+ */
+int filesystem_get_free_space(void);
+
+/** @brief Checks for the existence of a file on the filesystem.
+ * @param filename the file you wish to check
+ * @return true if the file exists; false otherwise
+ */
+bool filesystem_file_exists(char *filename);
+
+/** @brief Removes a file on the filesystem.
+ * @param filename the file you wish to remove
+ * @return true if the file was deleted successfully; false otherwise
+ */
+bool filesystem_rm(char *filename);
+
+/** @brief Reads a file from the filesystem into a buffer
+ * @param filename the file you wish to read
+ * @param buf A buffer of at least length bytes; the file will be read into this buffer
+ * @param length The number of bytes to read
+ * @return true if the read was successful; false otherwise
+ * @note This function will set buf to zero and read all bytes of the file into the buffer.
+ * If you are reading a raw value (say you wrote a uint32 to a file), you can read back
+ * the value by passing in the file's length for length. If you wish to treat the buffer
+ * as a null-terminated string, allocate a buffer one byte longer than the file's length,
+ * and the last byte will be guaranteed to be 0.
+ */
+bool filesystem_read_file(char *filename, char *buf, int32_t length);
+
+/** @brief Writes file to the filesystem
+ * @param filename the file you wish to write
+ * @param text The contents of the file
+ * @param length The number of bytes to write
+ * @return true if the write was successful; false otherwise
+ */
+bool filesystem_write_file(char *filename, char *text, int32_t length);
+
+/** @brief Handles the interactive file browser when Movement is plugged in to USB.
+ * @param line The command that the user typed into the serial console.
+ */
+void filesystem_process_command(char *line);
+
+#endif // FILESYSTEM_H_
projects / sensor-watch.git / commitdiff