Emulation of LocalFileSystem with virtual COM.
Dependents: KL46Z-lpc81isp lpcterm2
#include "USBLocalFileSystem.h" int main() { USBLocalFileSystem* usb_local = new USBLocalFileSystem(); // RamDisk(64KB) while(1) { usb_local->lock(true); usb_local->remount(); char filename[32]; if (usb_local->find(filename, sizeof(filename), "*.TXT")) { FILE* fp = fopen(filename, "r"); if (fp) { int c; while((c = fgetc(fp)) != EOF) { usb_local->putc(c); } fclose(fp); } } usb_local->lock(false); wait_ms(1000*5); } }
Sample application:
Import programKL46Z-lpc81isp
ISP example program.
Import programlpcterm2
semihost server example program
src/Storage.cpp@6:528036abfb02, 2014-06-21 (annotated)
- Committer:
- va009039
- Date:
- Sat Jun 21 22:39:59 2014 +0000
- Revision:
- 6:528036abfb02
- Parent:
- 4:8f6857784854
add LPC11U68
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
va009039 | 0:39eb4d5b97df | 1 | #include "Storage.h" |
va009039 | 0:39eb4d5b97df | 2 | #include "FATFileSystem.h" |
va009039 | 0:39eb4d5b97df | 3 | #include <ctype.h> |
va009039 | 0:39eb4d5b97df | 4 | |
va009039 | 0:39eb4d5b97df | 5 | #if (DEBUG2 > 3) |
va009039 | 0:39eb4d5b97df | 6 | #define STORAGE_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0); |
va009039 | 0:39eb4d5b97df | 7 | #else |
va009039 | 0:39eb4d5b97df | 8 | #define STORAGE_DBG(...) |
va009039 | 0:39eb4d5b97df | 9 | #endif |
va009039 | 0:39eb4d5b97df | 10 | |
va009039 | 0:39eb4d5b97df | 11 | LocalStorage::LocalStorage(StorageInterface* storage, const char* name) |
va009039 | 0:39eb4d5b97df | 12 | : FATFileSystem(name),_storage(storage) |
va009039 | 0:39eb4d5b97df | 13 | { |
va009039 | 0:39eb4d5b97df | 14 | _name = name; |
va009039 | 0:39eb4d5b97df | 15 | } |
va009039 | 0:39eb4d5b97df | 16 | |
va009039 |
4:8f6857784854 | 17 | static bool match1(const char* name, const char* pat) { |
va009039 |
4:8f6857784854 | 18 | while(1) { |
va009039 |
4:8f6857784854 | 19 | char c = *pat++; |
va009039 |
4:8f6857784854 | 20 | char d = *name++; |
va009039 |
4:8f6857784854 | 21 | if (c == '\0' && d == '\0') { |
va009039 |
4:8f6857784854 | 22 | return true; |
va009039 |
4:8f6857784854 | 23 | } else if (c == '\0' || d == '\0') { |
va009039 |
4:8f6857784854 | 24 | return false; |
va009039 |
4:8f6857784854 | 25 | } |
va009039 |
4:8f6857784854 | 26 | switch(c) { |
va009039 |
4:8f6857784854 | 27 | case '?': |
va009039 |
4:8f6857784854 | 28 | break; |
va009039 |
4:8f6857784854 | 29 | case '*': |
va009039 |
4:8f6857784854 | 30 | name--; |
va009039 |
4:8f6857784854 | 31 | while(*name) { |
va009039 |
4:8f6857784854 | 32 | if (*name == '.') { |
va009039 |
4:8f6857784854 | 33 | break; |
va009039 |
4:8f6857784854 | 34 | } |
va009039 |
4:8f6857784854 | 35 | name++; |
va009039 |
4:8f6857784854 | 36 | } |
va009039 |
4:8f6857784854 | 37 | break; |
va009039 |
4:8f6857784854 | 38 | default: |
va009039 |
4:8f6857784854 | 39 | if (toupper(d) != toupper(c)) { |
va009039 |
4:8f6857784854 | 40 | return false; |
va009039 |
4:8f6857784854 | 41 | } |
va009039 |
4:8f6857784854 | 42 | break; |
va009039 |
4:8f6857784854 | 43 | } |
va009039 |
4:8f6857784854 | 44 | } |
va009039 |
4:8f6857784854 | 45 | } |
va009039 |
4:8f6857784854 | 46 | |
va009039 |
4:8f6857784854 | 47 | extern FILINFO FATDirHandle_finfo; // fat/FATDirHandle.cpp |
va009039 |
4:8f6857784854 | 48 | /* static */ bool LocalStorage::find(char* name, size_t size, const char* dirname, const char* pat) |
va009039 | 0:39eb4d5b97df | 49 | { |
va009039 |
4:8f6857784854 | 50 | char dirpath[32]; |
va009039 |
4:8f6857784854 | 51 | strcpy(dirpath, "/"); |
va009039 |
4:8f6857784854 | 52 | if (strlen(dirname) >= sizeof(dirpath)-2) { |
va009039 |
4:8f6857784854 | 53 | return false; |
va009039 |
4:8f6857784854 | 54 | } |
va009039 |
4:8f6857784854 | 55 | strcat(dirpath, dirname); |
va009039 |
4:8f6857784854 | 56 | DIR *dir = ::opendir(dirpath); |
va009039 | 0:39eb4d5b97df | 57 | if (dir == NULL) { |
va009039 | 0:39eb4d5b97df | 58 | return false; |
va009039 | 0:39eb4d5b97df | 59 | } |
va009039 | 0:39eb4d5b97df | 60 | uint32_t fdatetime = 0; |
va009039 | 0:39eb4d5b97df | 61 | bool found = false; |
va009039 | 0:39eb4d5b97df | 62 | struct dirent *entry; |
va009039 | 0:39eb4d5b97df | 63 | while ((entry = readdir(dir)) != NULL) { |
va009039 |
4:8f6857784854 | 64 | if (match1(entry->d_name, pat)) { |
va009039 | 0:39eb4d5b97df | 65 | FILINFO* fi = &FATDirHandle_finfo; |
va009039 | 0:39eb4d5b97df | 66 | uint32_t datetime = fi->ftime | (fi->fdate<<16); |
va009039 | 0:39eb4d5b97df | 67 | STORAGE_DBG("datetime=%08x [%s]", datetime, entry->d_name); |
va009039 | 0:39eb4d5b97df | 68 | if (datetime > fdatetime) { |
va009039 | 0:39eb4d5b97df | 69 | fdatetime = datetime; |
va009039 |
4:8f6857784854 | 70 | if (strlen(dirpath) + 1 + strlen(entry->d_name) < size) { |
va009039 |
4:8f6857784854 | 71 | strcpy(name, dirpath); |
va009039 |
4:8f6857784854 | 72 | strcat(name, "/"); |
va009039 |
4:8f6857784854 | 73 | strcat(name, entry->d_name); |
va009039 |
4:8f6857784854 | 74 | found = true; |
va009039 |
4:8f6857784854 | 75 | } |
va009039 | 0:39eb4d5b97df | 76 | } |
va009039 | 0:39eb4d5b97df | 77 | } |
va009039 | 0:39eb4d5b97df | 78 | } |
va009039 | 0:39eb4d5b97df | 79 | closedir(dir); |
va009039 | 0:39eb4d5b97df | 80 | return found; |
va009039 | 0:39eb4d5b97df | 81 | } |
va009039 |
4:8f6857784854 | 82 |