Ermanno Brusadin / mbed-src

mbed library sources

common/RawSerial.cpp@0:0a673c671a56, 2016-07-27 (annotated)

Committer:
ebrus
Date:
Wed Jul 27 18:35:32 2016 +0000
Revision:
0:0a673c671a56
4

Who changed what in which revision?

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ebrus 0:0a673c671a56 1 /* mbed Microcontroller Library
ebrus 0:0a673c671a56 2 * Copyright (c) 2006-2013 ARM Limited
ebrus 0:0a673c671a56 3 *
ebrus 0:0a673c671a56 4 * Licensed under the Apache License, Version 2.0 (the "License");
ebrus 0:0a673c671a56 5 * you may not use this file except in compliance with the License.
ebrus 0:0a673c671a56 6 * You may obtain a copy of the License at
ebrus 0:0a673c671a56 7 *
ebrus 0:0a673c671a56 8 * http://www.apache.org/licenses/LICENSE-2.0
ebrus 0:0a673c671a56 9 *
ebrus 0:0a673c671a56 10 * Unless required by applicable law or agreed to in writing, software
ebrus 0:0a673c671a56 11 * distributed under the License is distributed on an "AS IS" BASIS,
ebrus 0:0a673c671a56 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ebrus 0:0a673c671a56 13 * See the License for the specific language governing permissions and
ebrus 0:0a673c671a56 14 * limitations under the License.
ebrus 0:0a673c671a56 15 */
ebrus 0:0a673c671a56 16 #include "RawSerial.h"
ebrus 0:0a673c671a56 17 #include "wait_api.h"
ebrus 0:0a673c671a56 18 #include <cstdarg>
ebrus 0:0a673c671a56 19
ebrus 0:0a673c671a56 20 #if DEVICE_SERIAL
ebrus 0:0a673c671a56 21
ebrus 0:0a673c671a56 22 #define STRING_STACK_LIMIT 120
ebrus 0:0a673c671a56 23
ebrus 0:0a673c671a56 24 namespace mbed {
ebrus 0:0a673c671a56 25
ebrus 0:0a673c671a56 26 RawSerial::RawSerial(PinName tx, PinName rx) : SerialBase(tx, rx) {
ebrus 0:0a673c671a56 27 }
ebrus 0:0a673c671a56 28
ebrus 0:0a673c671a56 29 int RawSerial::getc() {
ebrus 0:0a673c671a56 30 return _base_getc();
ebrus 0:0a673c671a56 31 }
ebrus 0:0a673c671a56 32
ebrus 0:0a673c671a56 33 int RawSerial::putc(int c) {
ebrus 0:0a673c671a56 34 return _base_putc(c);
ebrus 0:0a673c671a56 35 }
ebrus 0:0a673c671a56 36
ebrus 0:0a673c671a56 37 int RawSerial::puts(const char *str) {
ebrus 0:0a673c671a56 38 while (*str)
ebrus 0:0a673c671a56 39 putc(*str ++);
ebrus 0:0a673c671a56 40 return 0;
ebrus 0:0a673c671a56 41 }
ebrus 0:0a673c671a56 42
ebrus 0:0a673c671a56 43 // Experimental support for printf in RawSerial. No Stream inheritance
ebrus 0:0a673c671a56 44 // means we can't call printf() directly, so we use sprintf() instead.
ebrus 0:0a673c671a56 45 // We only call malloc() for the sprintf() buffer if the buffer
ebrus 0:0a673c671a56 46 // length is above a certain threshold, otherwise we use just the stack.
ebrus 0:0a673c671a56 47 int RawSerial::printf(const char *format, ...) {
ebrus 0:0a673c671a56 48 std::va_list arg;
ebrus 0:0a673c671a56 49 va_start(arg, format);
ebrus 0:0a673c671a56 50 int len = vsnprintf(NULL, 0, format, arg);
ebrus 0:0a673c671a56 51 if (len < STRING_STACK_LIMIT) {
ebrus 0:0a673c671a56 52 char temp[STRING_STACK_LIMIT];
ebrus 0:0a673c671a56 53 vsprintf(temp, format, arg);
ebrus 0:0a673c671a56 54 puts(temp);
ebrus 0:0a673c671a56 55 } else {
ebrus 0:0a673c671a56 56 char *temp = new char[len + 1];
ebrus 0:0a673c671a56 57 vsprintf(temp, format, arg);
ebrus 0:0a673c671a56 58 puts(temp);
ebrus 0:0a673c671a56 59 delete[] temp;
ebrus 0:0a673c671a56 60 }
ebrus 0:0a673c671a56 61 va_end(arg);
ebrus 0:0a673c671a56 62 return len;
ebrus 0:0a673c671a56 63 }
ebrus 0:0a673c671a56 64
ebrus 0:0a673c671a56 65 } // namespace mbed
ebrus 0:0a673c671a56 66
ebrus 0:0a673c671a56 67 #endif