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Fork of mbed-src by mbed official

api/Stream.h@431:255afbe6270c, 2014-12-09 (annotated)

Committer:
mbed_official
Date:
Tue Dec 09 14:45:08 2014 +0000
Revision:
431:255afbe6270c
Parent:
212:34d62c0b2af6 
Synchronized with git revision ea49132428ba76f828a3398a05088186c036de90



Full URL: https://github.com/mbedmicro/mbed/commit/ea49132428ba76f828a3398a05088186c036de90/



Fix IAR serial fgets fgetc



Taken from PR #770:

setbuf(_file, NULL), and std::setvbuf(_file,NULL,_IONBF,NULL) should both give an unbuffered stream (the data is directly written to the input buffer). IAR sets a buffer anyway of size 512 bytes for these calls. Calling setvbuff(_file,buf,_IONBF,NULL) with a buffer that is not a NULL pointer sets the buffer to size one. Which means that as soon as a char is read it is written to the real buffer. If people are interested in looking at this further they can look at the files under ARM/src/dlib: fgets.c, fflush.c, xfrpep.c and xfwprep.c

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #ifndef MBED_STREAM_H
bogdanm 13:0645d8841f51 17 #define MBED_STREAM_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "platform.h"
bogdanm 13:0645d8841f51 20 #include "FileLike.h"
bogdanm 13:0645d8841f51 21
bogdanm 13:0645d8841f51 22 namespace mbed {
bogdanm 13:0645d8841f51 23
mbed_official 431:255afbe6270c 24 extern void mbed_set_unbuffered_stream(FILE *_file);
mbed_official 431:255afbe6270c 25 extern int mbed_getc(FILE *_file);
mbed_official 431:255afbe6270c 26 extern char* mbed_gets(char *s, int size, FILE *_file);
mbed_official 431:255afbe6270c 27
bogdanm 13:0645d8841f51 28 class Stream : public FileLike {
bogdanm 13:0645d8841f51 29
bogdanm 13:0645d8841f51 30 public:
bogdanm 13:0645d8841f51 31 Stream(const char *name=NULL);
bogdanm 13:0645d8841f51 32 virtual ~Stream();
bogdanm 13:0645d8841f51 33
bogdanm 13:0645d8841f51 34 int putc(int c);
bogdanm 13:0645d8841f51 35 int puts(const char *s);
bogdanm 13:0645d8841f51 36 int getc();
bogdanm 13:0645d8841f51 37 char *gets(char *s, int size);
bogdanm 13:0645d8841f51 38 int printf(const char* format, ...);
bogdanm 13:0645d8841f51 39 int scanf(const char* format, ...);
bogdanm 13:0645d8841f51 40
bogdanm 13:0645d8841f51 41 operator std::FILE*() {return _file;}
bogdanm 13:0645d8841f51 42
bogdanm 13:0645d8841f51 43 protected:
bogdanm 13:0645d8841f51 44 virtual int close();
bogdanm 13:0645d8841f51 45 virtual ssize_t write(const void* buffer, size_t length);
bogdanm 13:0645d8841f51 46 virtual ssize_t read(void* buffer, size_t length);
bogdanm 13:0645d8841f51 47 virtual off_t lseek(off_t offset, int whence);
bogdanm 13:0645d8841f51 48 virtual int isatty();
bogdanm 13:0645d8841f51 49 virtual int fsync();
bogdanm 13:0645d8841f51 50 virtual off_t flen();
bogdanm 13:0645d8841f51 51
bogdanm 13:0645d8841f51 52 virtual int _putc(int c) = 0;
bogdanm 13:0645d8841f51 53 virtual int _getc() = 0;
bogdanm 13:0645d8841f51 54
bogdanm 13:0645d8841f51 55 std::FILE *_file;
mbed_official 212:34d62c0b2af6 56
mbed_official 212:34d62c0b2af6 57 /* disallow copy constructor and assignment operators */
mbed_official 212:34d62c0b2af6 58 private:
mbed_official 212:34d62c0b2af6 59 Stream(const Stream&);
mbed_official 212:34d62c0b2af6 60 Stream & operator = (const Stream&);
bogdanm 13:0645d8841f51 61 };
bogdanm 13:0645d8841f51 62
bogdanm 13:0645d8841f51 63 } // namespace mbed
bogdanm 13:0645d8841f51 64
bogdanm 13:0645d8841f51 65 #endif