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Last commit 20 Feb 2019 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?
| User | Revision | Line number | New 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 |
