Yihui Xiong / mbed-src-nrf51822

customized mbed library sources for nrf51822

Dependents:   Grove_Node Potentiometer BLE_Beacon I2C_Scanner

common/RawSerial.cpp@0:700cadd8b708, 2014-11-04 (annotated)

Committer:
yihui
Date:
Tue Nov 04 07:38:53 2014 +0000
Revision:
0:700cadd8b708
customized mbed-src library for nrf51822

Who changed what in which revision?

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yihui 0:700cadd8b708 1 /* mbed Microcontroller Library
yihui 0:700cadd8b708 2 * Copyright (c) 2006-2013 ARM Limited
yihui 0:700cadd8b708 3 *
yihui 0:700cadd8b708 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 0:700cadd8b708 5 * you may not use this file except in compliance with the License.
yihui 0:700cadd8b708 6 * You may obtain a copy of the License at
yihui 0:700cadd8b708 7 *
yihui 0:700cadd8b708 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 0:700cadd8b708 9 *
yihui 0:700cadd8b708 10 * Unless required by applicable law or agreed to in writing, software
yihui 0:700cadd8b708 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 0:700cadd8b708 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 0:700cadd8b708 13 * See the License for the specific language governing permissions and
yihui 0:700cadd8b708 14 * limitations under the License.
yihui 0:700cadd8b708 15 */
yihui 0:700cadd8b708 16 #include "RawSerial.h"
yihui 0:700cadd8b708 17 #include "wait_api.h"
yihui 0:700cadd8b708 18 #include <cstdarg>
yihui 0:700cadd8b708 19
yihui 0:700cadd8b708 20 #if DEVICE_SERIAL
yihui 0:700cadd8b708 21
yihui 0:700cadd8b708 22 #define STRING_STACK_LIMIT 120
yihui 0:700cadd8b708 23
yihui 0:700cadd8b708 24 namespace mbed {
yihui 0:700cadd8b708 25
yihui 0:700cadd8b708 26 RawSerial::RawSerial(PinName tx, PinName rx) : SerialBase(tx, rx) {
yihui 0:700cadd8b708 27 }
yihui 0:700cadd8b708 28
yihui 0:700cadd8b708 29 int RawSerial::getc() {
yihui 0:700cadd8b708 30 return _base_getc();
yihui 0:700cadd8b708 31 }
yihui 0:700cadd8b708 32
yihui 0:700cadd8b708 33 int RawSerial::putc(int c) {
yihui 0:700cadd8b708 34 return _base_putc(c);
yihui 0:700cadd8b708 35 }
yihui 0:700cadd8b708 36
yihui 0:700cadd8b708 37 int RawSerial::puts(const char *str) {
yihui 0:700cadd8b708 38 while (*str)
yihui 0:700cadd8b708 39 putc(*str ++);
yihui 0:700cadd8b708 40 return 0;
yihui 0:700cadd8b708 41 }
yihui 0:700cadd8b708 42
yihui 0:700cadd8b708 43 // Experimental support for printf in RawSerial. No Stream inheritance
yihui 0:700cadd8b708 44 // means we can't call printf() directly, so we use sprintf() instead.
yihui 0:700cadd8b708 45 // We only call malloc() for the sprintf() buffer if the buffer
yihui 0:700cadd8b708 46 // length is above a certain threshold, otherwise we use just the stack.
yihui 0:700cadd8b708 47 int RawSerial::printf(const char *format, ...) {
yihui 0:700cadd8b708 48 std::va_list arg;
yihui 0:700cadd8b708 49 va_start(arg, format);
yihui 0:700cadd8b708 50 int len = vsnprintf(NULL, 0, format, arg);
yihui 0:700cadd8b708 51 if (len < STRING_STACK_LIMIT) {
yihui 0:700cadd8b708 52 char temp[STRING_STACK_LIMIT];
yihui 0:700cadd8b708 53 vsprintf(temp, format, arg);
yihui 0:700cadd8b708 54 puts(temp);
yihui 0:700cadd8b708 55 } else {
yihui 0:700cadd8b708 56 char *temp = new char[len + 1];
yihui 0:700cadd8b708 57 vsprintf(temp, format, arg);
yihui 0:700cadd8b708 58 puts(temp);
yihui 0:700cadd8b708 59 delete[] temp;
yihui 0:700cadd8b708 60 }
yihui 0:700cadd8b708 61 va_end(arg);
yihui 0:700cadd8b708 62 return len;
yihui 0:700cadd8b708 63 }
yihui 0:700cadd8b708 64
yihui 0:700cadd8b708 65 } // namespace mbed
yihui 0:700cadd8b708 66
yihui 0:700cadd8b708 67 #endif