Norimasa Okamoto
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：
Diff: src/mystring.h
- Revision:
- 0:39eb4d5b97df
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/mystring.h Sat May 03 11:21:37 2014 +0000
@@ -0,0 +1,83 @@
+#include <stdlib.h>
+#include <string.h>
+#pragma once
+class mystring {
+public:
+ mystring(){
+ _init();
+ }
+ mystring(const char* s) {
+ _init();
+ append(s);
+ }
+
+ ~mystring() {
+ if (_buf) {
+ free(_buf);
+ }
+ }
+ void clear() {
+ if (_buf) {
+ free(_buf);
+ }
+ _init();
+ }
+ bool empty() {
+ return _len == 0;
+ }
+ size_t size() {
+ return _len;
+ }
+ void append(const char* s, int len) {
+ if (_buf == NULL) {
+ return;
+ }
+ int new_len = _len + len;
+ char* new_buf = (char*)malloc(new_len + 1);
+ if (new_buf == NULL) {
+ return;
+ }
+ memcpy(new_buf, _buf, _len);
+ memcpy(new_buf+_len, s, len);
+ new_buf[_len+len] = '\0';
+ free(_buf);
+ _buf = new_buf;
+ _len += new_len;
+ }
+ void append(const char* s) {
+ append(s, strlen(s));
+ }
+ void append(int c) {
+ char buf[1];
+ buf[0] = c;
+ append(buf, sizeof(buf));
+ }
+ char* c_str() {
+ if (_buf) {
+ return _buf;
+ }
+ return "";
+ }
+ mystring& operator= (const char* s) {
+ _init();
+ append(s);
+ return *this;
+ }
+ mystring& operator+= (const char* s) {
+ append(s);
+ return *this;
+ }
+ char& operator[] (size_t pos) {
+ return _buf[pos];
+ }
+private:
+ void _init() {
+ _len = 0;
+ _buf = (char*)malloc(1);
+ if (_buf) {
+ _buf[0] = '\0';
+ }
+ }
+ char* _buf;
+ int _len;
+};