Yihui Xiong / BLE_NODE_TEST

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Dependencies:   BLE_API nRF51822

Fork of BLE_LoopbackUART by Bluetooth Low Energy

mbed-src/common/RawSerial.cpp@9:05f0b5a3a70a, 2014-10-29 (annotated)

Committer:
yihui
Date:
Wed Oct 29 06:23:47 2014 +0000
Revision:
9:05f0b5a3a70a
initial

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 9:05f0b5a3a70a 1 /* mbed Microcontroller Library
yihui 9:05f0b5a3a70a 2 * Copyright (c) 2006-2013 ARM Limited
yihui 9:05f0b5a3a70a 3 *
yihui 9:05f0b5a3a70a 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 9:05f0b5a3a70a 5 * you may not use this file except in compliance with the License.
yihui 9:05f0b5a3a70a 6 * You may obtain a copy of the License at
yihui 9:05f0b5a3a70a 7 *
yihui 9:05f0b5a3a70a 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 9:05f0b5a3a70a 9 *
yihui 9:05f0b5a3a70a 10 * Unless required by applicable law or agreed to in writing, software
yihui 9:05f0b5a3a70a 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 9:05f0b5a3a70a 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 9:05f0b5a3a70a 13 * See the License for the specific language governing permissions and
yihui 9:05f0b5a3a70a 14 * limitations under the License.
yihui 9:05f0b5a3a70a 15 */
yihui 9:05f0b5a3a70a 16 #include "RawSerial.h"
yihui 9:05f0b5a3a70a 17 #include "wait_api.h"
yihui 9:05f0b5a3a70a 18 #include <cstdarg>
yihui 9:05f0b5a3a70a 19
yihui 9:05f0b5a3a70a 20 #if DEVICE_SERIAL
yihui 9:05f0b5a3a70a 21
yihui 9:05f0b5a3a70a 22 #define STRING_STACK_LIMIT 120
yihui 9:05f0b5a3a70a 23
yihui 9:05f0b5a3a70a 24 namespace mbed {
yihui 9:05f0b5a3a70a 25
yihui 9:05f0b5a3a70a 26 RawSerial::RawSerial(PinName tx, PinName rx) : SerialBase(tx, rx) {
yihui 9:05f0b5a3a70a 27 }
yihui 9:05f0b5a3a70a 28
yihui 9:05f0b5a3a70a 29 int RawSerial::getc() {
yihui 9:05f0b5a3a70a 30 return _base_getc();
yihui 9:05f0b5a3a70a 31 }
yihui 9:05f0b5a3a70a 32
yihui 9:05f0b5a3a70a 33 int RawSerial::putc(int c) {
yihui 9:05f0b5a3a70a 34 return _base_putc(c);
yihui 9:05f0b5a3a70a 35 }
yihui 9:05f0b5a3a70a 36
yihui 9:05f0b5a3a70a 37 int RawSerial::puts(const char *str) {
yihui 9:05f0b5a3a70a 38 while (*str)
yihui 9:05f0b5a3a70a 39 putc(*str ++);
yihui 9:05f0b5a3a70a 40 return 0;
yihui 9:05f0b5a3a70a 41 }
yihui 9:05f0b5a3a70a 42
yihui 9:05f0b5a3a70a 43 // Experimental support for printf in RawSerial. No Stream inheritance
yihui 9:05f0b5a3a70a 44 // means we can't call printf() directly, so we use sprintf() instead.
yihui 9:05f0b5a3a70a 45 // We only call malloc() for the sprintf() buffer if the buffer
yihui 9:05f0b5a3a70a 46 // length is above a certain threshold, otherwise we use just the stack.
yihui 9:05f0b5a3a70a 47 int RawSerial::printf(const char *format, ...) {
yihui 9:05f0b5a3a70a 48 std::va_list arg;
yihui 9:05f0b5a3a70a 49 va_start(arg, format);
yihui 9:05f0b5a3a70a 50 int len = vsnprintf(NULL, 0, format, arg);
yihui 9:05f0b5a3a70a 51 if (len < STRING_STACK_LIMIT) {
yihui 9:05f0b5a3a70a 52 char temp[STRING_STACK_LIMIT];
yihui 9:05f0b5a3a70a 53 vsprintf(temp, format, arg);
yihui 9:05f0b5a3a70a 54 puts(temp);
yihui 9:05f0b5a3a70a 55 } else {
yihui 9:05f0b5a3a70a 56 char *temp = new char[len + 1];
yihui 9:05f0b5a3a70a 57 vsprintf(temp, format, arg);
yihui 9:05f0b5a3a70a 58 puts(temp);
yihui 9:05f0b5a3a70a 59 delete[] temp;
yihui 9:05f0b5a3a70a 60 }
yihui 9:05f0b5a3a70a 61 va_end(arg);
yihui 9:05f0b5a3a70a 62 return len;
yihui 9:05f0b5a3a70a 63 }
yihui 9:05f0b5a3a70a 64
yihui 9:05f0b5a3a70a 65 } // namespace mbed
yihui 9:05f0b5a3a70a 66
yihui 9:05f0b5a3a70a 67 #endif