mirror of
https://github.com/firewalkwithm3/Sensor-Watch.git
synced 2024-11-23 03:30:30 +08:00
281 lines
8.3 KiB
C
281 lines
8.3 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <peripheral_clk_config.h>
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#include "filesystem.h"
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#include "watch.h"
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#include "lfs.h"
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#include "hpl_flash.h"
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int lfs_storage_read(const struct lfs_config *cfg, lfs_block_t block, lfs_off_t off, void *buffer, lfs_size_t size);
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int lfs_storage_prog(const struct lfs_config *cfg, lfs_block_t block, lfs_off_t off, const void *buffer, lfs_size_t size);
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int lfs_storage_erase(const struct lfs_config *cfg, lfs_block_t block);
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int lfs_storage_sync(const struct lfs_config *cfg);
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int lfs_storage_read(const struct lfs_config *cfg, lfs_block_t block, lfs_off_t off, void *buffer, lfs_size_t size) {
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(void) cfg;
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return !watch_storage_read(block, off, (void *)buffer, size);
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}
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int lfs_storage_prog(const struct lfs_config *cfg, lfs_block_t block, lfs_off_t off, const void *buffer, lfs_size_t size) {
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(void) cfg;
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return !watch_storage_write(block, off, (void *)buffer, size);
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}
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int lfs_storage_erase(const struct lfs_config *cfg, lfs_block_t block) {
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(void) cfg;
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return !watch_storage_erase(block);
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}
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int lfs_storage_sync(const struct lfs_config *cfg) {
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(void) cfg;
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return !watch_storage_sync();
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}
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const struct lfs_config cfg = {
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// block device operations
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.read = lfs_storage_read,
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.prog = lfs_storage_prog,
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.erase = lfs_storage_erase,
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.sync = lfs_storage_sync,
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// block device configuration
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.read_size = 16,
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.prog_size = NVMCTRL_PAGE_SIZE,
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.block_size = NVMCTRL_ROW_SIZE,
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.block_count = NVMCTRL_RWWEE_PAGES / 4,
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.cache_size = NVMCTRL_PAGE_SIZE,
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.lookahead_size = 16,
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.block_cycles = 100,
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};
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static lfs_t lfs;
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static lfs_file_t file;
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static struct lfs_info info;
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static int _traverse_df_cb(void *p, lfs_block_t block) {
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(void) block;
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uint32_t *nb = p;
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*nb += 1;
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return 0;
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}
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int32_t filesystem_get_free_space(void) {
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int err;
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uint32_t free_blocks = 0;
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err = lfs_fs_traverse(&lfs, _traverse_df_cb, &free_blocks);
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if(err < 0){
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return err;
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}
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uint32_t available = cfg.block_count * cfg.block_size - free_blocks * cfg.block_size;
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return (int32_t)available;
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}
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static int filesystem_ls(lfs_t *lfs, const char *path) {
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lfs_dir_t dir;
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int err = lfs_dir_open(lfs, &dir, path);
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if (err < 0) {
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return err;
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}
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struct lfs_info info;
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while (true) {
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int res = lfs_dir_read(lfs, &dir, &info);
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if (res < 0) {
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return res;
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}
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if (res == 0) {
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break;
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}
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switch (info.type) {
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case LFS_TYPE_REG: printf("file "); break;
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case LFS_TYPE_DIR: printf("dir "); break;
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default: printf("? "); break;
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}
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printf("%4ld bytes ", info.size);
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printf("%s\n", info.name);
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}
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err = lfs_dir_close(lfs, &dir);
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if (err < 0) {
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return err;
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}
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return 0;
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}
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bool filesystem_init(void) {
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int err = lfs_mount(&lfs, &cfg);
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// reformat if we can't mount the filesystem
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// this should only happen on the first boot
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if (err < 0) {
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printf("Ignore that error! Formatting filesystem...\n");
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err = lfs_format(&lfs, &cfg);
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if (err < 0) return false;
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err = lfs_mount(&lfs, &cfg) == LFS_ERR_OK;
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printf("Filesystem mounted with %ld bytes free.\n", filesystem_get_free_space());
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}
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return err == LFS_ERR_OK;
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}
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bool filesystem_file_exists(char *filename) {
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info.type = 0;
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lfs_stat(&lfs, filename, &info);
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return info.type == LFS_TYPE_REG;
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}
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bool filesystem_rm(char *filename) {
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info.type = 0;
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lfs_stat(&lfs, filename, &info);
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if (filesystem_file_exists(filename)) {
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return lfs_remove(&lfs, filename) == LFS_ERR_OK;
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} else {
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printf("rm: %s: No such file\n", filename);
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return false;
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}
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}
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int32_t filesystem_get_file_size(char *filename) {
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if (filesystem_file_exists(filename)) {
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return info.size; // info struct was just populated by filesystem_file_exists
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}
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return -1;
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}
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bool filesystem_read_file(char *filename, char *buf, int32_t length) {
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memset(buf, 0, length);
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int32_t file_size = filesystem_get_file_size(filename);
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if (file_size > 0) {
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int err = lfs_file_open(&lfs, &file, filename, LFS_O_RDONLY);
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if (err < 0) return false;
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err = lfs_file_read(&lfs, &file, buf, min(length, file_size));
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if (err < 0) return false;
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return lfs_file_close(&lfs, &file) == LFS_ERR_OK;
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}
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return false;
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}
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bool filesystem_read_line(char *filename, char *buf, int32_t *offset, int32_t length) {
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memset(buf, 0, length + 1);
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int32_t file_size = filesystem_get_file_size(filename);
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if (file_size > 0) {
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int err = lfs_file_open(&lfs, &file, filename, LFS_O_RDONLY);
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if (err < 0) return false;
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err = lfs_file_seek(&lfs, &file, *offset, LFS_SEEK_SET);
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if (err < 0) return false;
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err = lfs_file_read(&lfs, &file, buf, min(length - 1, file_size - *offset));
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if (err < 0) return false;
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for(int i = 0; i < length; i++) {
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(*offset)++;
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if (buf[i] == '\n') {
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buf[i] = 0;
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break;
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}
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}
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return lfs_file_close(&lfs, &file) == LFS_ERR_OK;
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}
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return false;
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}
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static void filesystem_cat(char *filename) {
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info.type = 0;
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lfs_stat(&lfs, filename, &info);
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if (filesystem_file_exists(filename)) {
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if (info.size > 0) {
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char *buf = malloc(info.size + 1);
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filesystem_read_file(filename, buf, info.size);
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printf("%s\n", buf);
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free(buf);
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} else {
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printf("\n");
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}
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} else {
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printf("cat: %s: No such file\n", filename);
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}
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}
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bool filesystem_write_file(char *filename, char *text, int32_t length) {
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int err = lfs_file_open(&lfs, &file, filename, LFS_O_RDWR | LFS_O_CREAT | LFS_O_TRUNC);
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if (err < 0) return false;
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err = lfs_file_write(&lfs, &file, text, length);
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if (err < 0) return false;
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return lfs_file_close(&lfs, &file) == LFS_ERR_OK;
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}
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bool filesystem_append_file(char *filename, char *text, int32_t length) {
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int err = lfs_file_open(&lfs, &file, filename, LFS_O_WRONLY | LFS_O_CREAT | LFS_O_APPEND);
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if (err < 0) return false;
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err = lfs_file_write(&lfs, &file, text, length);
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if (err < 0) return false;
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return lfs_file_close(&lfs, &file) == LFS_ERR_OK;
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}
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void filesystem_process_command(char *line) {
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printf("$ %s", line);
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char *command = strtok(line, " \n");
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if (strcmp(command, "ls") == 0) {
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char *directory = strtok(NULL, " \n");
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if (directory == NULL) {
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filesystem_ls(&lfs, "/");
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} else {
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printf("usage: ls\n");
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}
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} else if (strcmp(command, "cat") == 0) {
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char *filename = strtok(NULL, " \n");
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if (filename == NULL) {
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printf("usage: cat file\n");
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} else {
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filesystem_cat(filename);
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}
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} else if (strcmp(command, "df") == 0) {
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printf("free space: %ld bytes\n", filesystem_get_free_space());
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} else if (strcmp(command, "rm") == 0) {
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char *filename = strtok(NULL, " \n");
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if (filename == NULL) {
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printf("usage: rm file\n");
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} else {
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filesystem_rm(filename);
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}
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} else if (strcmp(command, "echo") == 0) {
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char *text = malloc(248);
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memset(text, 0, 248);
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size_t pos = 0;
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char *word = strtok(NULL, " \n");
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while (strcmp(word, ">") && strcmp(word, ">>")) {
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sprintf(text + pos, "%s ", word);
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pos += strlen(word) + 1;
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word = strtok(NULL, " \n");
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if (word == NULL) break;
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}
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text[strlen(text) - 1] = 0;
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char *filename = strtok(NULL, " \n");
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if (filename == NULL) {
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printf("usage: echo text > file\n");
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} else if (strchr(filename, '/') || strchr(filename, '\\')) {
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printf("subdirectories are not supported\n");
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} else if (!strcmp(word, ">")) {
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filesystem_write_file(filename, text, strlen(text));
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filesystem_append_file(filename, "\n", 1);
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} else if (!strcmp(word, ">>")) {
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filesystem_append_file(filename, text, strlen(text));
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filesystem_append_file(filename, "\n", 1);
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}
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free(text);
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} else {
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printf("%s: command not found\n", command);
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}
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}
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