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
- Committer:
- va009039
- Date:
- 2014-05-08
- Revision:
- 4:8f6857784854
- Parent:
- 0:39eb4d5b97df
File content as of revision 4:8f6857784854:
#include "Storage.h" #include "FATFileSystem.h" #include <ctype.h> #if (DEBUG2 > 3) #define STORAGE_DBG(...) do{fprintf(stderr,"[%s@%d] ",__PRETTY_FUNCTION__,__LINE__);fprintf(stderr,__VA_ARGS__);fprintf(stderr,"\r\n");} while(0); #else #define STORAGE_DBG(...) #endif LocalStorage::LocalStorage(StorageInterface* storage, const char* name) : FATFileSystem(name),_storage(storage) { _name = name; } static bool match1(const char* name, const char* pat) { while(1) { char c = *pat++; char d = *name++; if (c == '\0' && d == '\0') { return true; } else if (c == '\0' || d == '\0') { return false; } switch(c) { case '?': break; case '*': name--; while(*name) { if (*name == '.') { break; } name++; } break; default: if (toupper(d) != toupper(c)) { return false; } break; } } } extern FILINFO FATDirHandle_finfo; // fat/FATDirHandle.cpp /* static */ bool LocalStorage::find(char* name, size_t size, const char* dirname, const char* pat) { char dirpath[32]; strcpy(dirpath, "/"); if (strlen(dirname) >= sizeof(dirpath)-2) { return false; } strcat(dirpath, dirname); DIR *dir = ::opendir(dirpath); if (dir == NULL) { return false; } uint32_t fdatetime = 0; bool found = false; struct dirent *entry; while ((entry = readdir(dir)) != NULL) { if (match1(entry->d_name, pat)) { FILINFO* fi = &FATDirHandle_finfo; uint32_t datetime = fi->ftime | (fi->fdate<<16); STORAGE_DBG("datetime=%08x [%s]", datetime, entry->d_name); if (datetime > fdatetime) { fdatetime = datetime; if (strlen(dirpath) + 1 + strlen(entry->d_name) < size) { strcpy(name, dirpath); strcat(name, "/"); strcat(name, entry->d_name); found = true; } } } } closedir(dir); return found; }