joey shelton / LED_Demo2

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Dependencies:   MAX44000 PWM_Tone_Library nexpaq_mdk

Fork of LED_Demo by joey shelton

mbd_os/hal/common/Stream.cpp@9:6bb35cef007d, 2016-10-22 (annotated)

Committer:
cyberjoey
Date:
Sat Oct 22 01:31:58 2016 +0000
Revision:
9:6bb35cef007d
Parent:
1:55a6170b404f 
WORKING

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 1:55a6170b404f 1 /* mbed Microcontroller Library
nexpaq 1:55a6170b404f 2 * Copyright (c) 2006-2013 ARM Limited
nexpaq 1:55a6170b404f 3 *
nexpaq 1:55a6170b404f 4 * Licensed under the Apache License, Version 2.0 (the "License");
nexpaq 1:55a6170b404f 5 * you may not use this file except in compliance with the License.
nexpaq 1:55a6170b404f 6 * You may obtain a copy of the License at
nexpaq 1:55a6170b404f 7 *
nexpaq 1:55a6170b404f 8 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 1:55a6170b404f 9 *
nexpaq 1:55a6170b404f 10 * Unless required by applicable law or agreed to in writing, software
nexpaq 1:55a6170b404f 11 * distributed under the License is distributed on an "AS IS" BASIS,
nexpaq 1:55a6170b404f 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 1:55a6170b404f 13 * See the License for the specific language governing permissions and
nexpaq 1:55a6170b404f 14 * limitations under the License.
nexpaq 1:55a6170b404f 15 */
nexpaq 1:55a6170b404f 16 #include "Stream.h"
nexpaq 1:55a6170b404f 17
nexpaq 1:55a6170b404f 18 namespace mbed {
nexpaq 1:55a6170b404f 19
nexpaq 1:55a6170b404f 20 Stream::Stream(const char *name) : FileLike(name), _file(NULL) {
nexpaq 1:55a6170b404f 21 // No lock needed in constructor
nexpaq 1:55a6170b404f 22 /* open ourselves */
nexpaq 1:55a6170b404f 23 char buf[12]; /* :0x12345678 + null byte */
nexpaq 1:55a6170b404f 24 std::sprintf(buf, ":%p", this);
nexpaq 1:55a6170b404f 25 _file = std::fopen(buf, "w+");
nexpaq 1:55a6170b404f 26 mbed_set_unbuffered_stream(_file);
nexpaq 1:55a6170b404f 27 }
nexpaq 1:55a6170b404f 28
nexpaq 1:55a6170b404f 29 Stream::~Stream() {
nexpaq 1:55a6170b404f 30 // No lock can be used in destructor
nexpaq 1:55a6170b404f 31 fclose(_file);
nexpaq 1:55a6170b404f 32 }
nexpaq 1:55a6170b404f 33
nexpaq 1:55a6170b404f 34 int Stream::putc(int c) {
nexpaq 1:55a6170b404f 35 lock();
nexpaq 1:55a6170b404f 36 fflush(_file);
nexpaq 1:55a6170b404f 37 int ret = std::fputc(c, _file);
nexpaq 1:55a6170b404f 38 unlock();
nexpaq 1:55a6170b404f 39 return ret;
nexpaq 1:55a6170b404f 40 }
nexpaq 1:55a6170b404f 41 int Stream::puts(const char *s) {
nexpaq 1:55a6170b404f 42 lock();
nexpaq 1:55a6170b404f 43 fflush(_file);
nexpaq 1:55a6170b404f 44 int ret = std::fputs(s, _file);
nexpaq 1:55a6170b404f 45 unlock();
nexpaq 1:55a6170b404f 46 return ret;
nexpaq 1:55a6170b404f 47 }
nexpaq 1:55a6170b404f 48 int Stream::getc() {
nexpaq 1:55a6170b404f 49 lock();
nexpaq 1:55a6170b404f 50 fflush(_file);
nexpaq 1:55a6170b404f 51 int ret = mbed_getc(_file);
nexpaq 1:55a6170b404f 52 unlock();
nexpaq 1:55a6170b404f 53 return ret;
nexpaq 1:55a6170b404f 54 }
nexpaq 1:55a6170b404f 55 char* Stream::gets(char *s, int size) {
nexpaq 1:55a6170b404f 56 lock();
nexpaq 1:55a6170b404f 57 fflush(_file);
nexpaq 1:55a6170b404f 58 char *ret = mbed_gets(s,size,_file);
nexpaq 1:55a6170b404f 59 unlock();
nexpaq 1:55a6170b404f 60 return ret;
nexpaq 1:55a6170b404f 61 }
nexpaq 1:55a6170b404f 62
nexpaq 1:55a6170b404f 63 int Stream::close() {
nexpaq 1:55a6170b404f 64 return 0;
nexpaq 1:55a6170b404f 65 }
nexpaq 1:55a6170b404f 66
nexpaq 1:55a6170b404f 67 ssize_t Stream::write(const void* buffer, size_t length) {
nexpaq 1:55a6170b404f 68 const char* ptr = (const char*)buffer;
nexpaq 1:55a6170b404f 69 const char* end = ptr + length;
nexpaq 1:55a6170b404f 70
nexpaq 1:55a6170b404f 71 lock();
nexpaq 1:55a6170b404f 72 while (ptr != end) {
nexpaq 1:55a6170b404f 73 if (_putc(*ptr++) == EOF) {
nexpaq 1:55a6170b404f 74 break;
nexpaq 1:55a6170b404f 75 }
nexpaq 1:55a6170b404f 76 }
nexpaq 1:55a6170b404f 77 unlock();
nexpaq 1:55a6170b404f 78
nexpaq 1:55a6170b404f 79 return ptr - (const char*)buffer;
nexpaq 1:55a6170b404f 80 }
nexpaq 1:55a6170b404f 81
nexpaq 1:55a6170b404f 82 ssize_t Stream::read(void* buffer, size_t length) {
nexpaq 1:55a6170b404f 83 char* ptr = (char*)buffer;
nexpaq 1:55a6170b404f 84 char* end = ptr + length;
nexpaq 1:55a6170b404f 85
nexpaq 1:55a6170b404f 86 lock();
nexpaq 1:55a6170b404f 87 while (ptr != end) {
nexpaq 1:55a6170b404f 88 int c = _getc();
nexpaq 1:55a6170b404f 89 if (c==EOF) break;
nexpaq 1:55a6170b404f 90 *ptr++ = c;
nexpaq 1:55a6170b404f 91 }
nexpaq 1:55a6170b404f 92 unlock();
nexpaq 1:55a6170b404f 93
nexpaq 1:55a6170b404f 94 return ptr - (const char*)buffer;
nexpaq 1:55a6170b404f 95 }
nexpaq 1:55a6170b404f 96
nexpaq 1:55a6170b404f 97 off_t Stream::lseek(off_t offset, int whence) {
nexpaq 1:55a6170b404f 98 return 0;
nexpaq 1:55a6170b404f 99 }
nexpaq 1:55a6170b404f 100
nexpaq 1:55a6170b404f 101 int Stream::isatty() {
nexpaq 1:55a6170b404f 102 return 0;
nexpaq 1:55a6170b404f 103 }
nexpaq 1:55a6170b404f 104
nexpaq 1:55a6170b404f 105 int Stream::fsync() {
nexpaq 1:55a6170b404f 106 return 0;
nexpaq 1:55a6170b404f 107 }
nexpaq 1:55a6170b404f 108
nexpaq 1:55a6170b404f 109 off_t Stream::flen() {
nexpaq 1:55a6170b404f 110 return 0;
nexpaq 1:55a6170b404f 111 }
nexpaq 1:55a6170b404f 112
nexpaq 1:55a6170b404f 113 int Stream::printf(const char* format, ...) {
nexpaq 1:55a6170b404f 114 lock();
nexpaq 1:55a6170b404f 115 std::va_list arg;
nexpaq 1:55a6170b404f 116 va_start(arg, format);
nexpaq 1:55a6170b404f 117 fflush(_file);
nexpaq 1:55a6170b404f 118 int r = vfprintf(_file, format, arg);
nexpaq 1:55a6170b404f 119 va_end(arg);
nexpaq 1:55a6170b404f 120 unlock();
nexpaq 1:55a6170b404f 121 return r;
nexpaq 1:55a6170b404f 122 }
nexpaq 1:55a6170b404f 123
nexpaq 1:55a6170b404f 124 int Stream::scanf(const char* format, ...) {
nexpaq 1:55a6170b404f 125 lock();
nexpaq 1:55a6170b404f 126 std::va_list arg;
nexpaq 1:55a6170b404f 127 va_start(arg, format);
nexpaq 1:55a6170b404f 128 fflush(_file);
nexpaq 1:55a6170b404f 129 int r = vfscanf(_file, format, arg);
nexpaq 1:55a6170b404f 130 va_end(arg);
nexpaq 1:55a6170b404f 131 unlock();
nexpaq 1:55a6170b404f 132 return r;
nexpaq 1:55a6170b404f 133 }
nexpaq 1:55a6170b404f 134
nexpaq 1:55a6170b404f 135 int Stream::vprintf(const char* format, std::va_list args) {
nexpaq 1:55a6170b404f 136 lock();
nexpaq 1:55a6170b404f 137 fflush(_file);
nexpaq 1:55a6170b404f 138 int r = vfprintf(_file, format, args);
nexpaq 1:55a6170b404f 139 unlock();
nexpaq 1:55a6170b404f 140 return r;
nexpaq 1:55a6170b404f 141 }
nexpaq 1:55a6170b404f 142
nexpaq 1:55a6170b404f 143 int Stream::vscanf(const char* format, std::va_list args) {
nexpaq 1:55a6170b404f 144 lock();
nexpaq 1:55a6170b404f 145 fflush(_file);
nexpaq 1:55a6170b404f 146 int r = vfscanf(_file, format, args);
nexpaq 1:55a6170b404f 147 unlock();
nexpaq 1:55a6170b404f 148 return r;
nexpaq 1:55a6170b404f 149 }
nexpaq 1:55a6170b404f 150
nexpaq 1:55a6170b404f 151 } // namespace mbed