Tomo Yamanaka / mbed-dev

mbed library sources. Supersedes mbed-src. GR-PEACH runs on RAM.

Fork of mbed-dev by mbed official

common/RawSerial.cpp@103:493a29d2d4d7, 2016-03-30 (annotated)

Committer:
1050186
Date:
Wed Mar 30 11:41:25 2016 +0000
Revision:
103:493a29d2d4d7
Parent:
47:e32b5dd8af6d 
GR-PEACH runs on RAM.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #include "RawSerial.h"
bogdanm 0:9b334a45a8ff 17 #include "wait_api.h"
bogdanm 0:9b334a45a8ff 18 #include <cstdarg>
bogdanm 0:9b334a45a8ff 19
bogdanm 0:9b334a45a8ff 20 #if DEVICE_SERIAL
bogdanm 0:9b334a45a8ff 21
bogdanm 0:9b334a45a8ff 22 #define STRING_STACK_LIMIT 120
bogdanm 0:9b334a45a8ff 23
bogdanm 0:9b334a45a8ff 24 namespace mbed {
bogdanm 0:9b334a45a8ff 25
bogdanm 0:9b334a45a8ff 26 RawSerial::RawSerial(PinName tx, PinName rx) : SerialBase(tx, rx) {
bogdanm 0:9b334a45a8ff 27 }
bogdanm 0:9b334a45a8ff 28
bogdanm 0:9b334a45a8ff 29 int RawSerial::getc() {
bogdanm 0:9b334a45a8ff 30 return _base_getc();
bogdanm 0:9b334a45a8ff 31 }
bogdanm 0:9b334a45a8ff 32
bogdanm 0:9b334a45a8ff 33 int RawSerial::putc(int c) {
bogdanm 0:9b334a45a8ff 34 return _base_putc(c);
bogdanm 0:9b334a45a8ff 35 }
bogdanm 0:9b334a45a8ff 36
bogdanm 0:9b334a45a8ff 37 int RawSerial::puts(const char *str) {
bogdanm 0:9b334a45a8ff 38 while (*str)
bogdanm 0:9b334a45a8ff 39 putc(*str ++);
bogdanm 0:9b334a45a8ff 40 return 0;
bogdanm 0:9b334a45a8ff 41 }
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 // Experimental support for printf in RawSerial. No Stream inheritance
bogdanm 0:9b334a45a8ff 44 // means we can't call printf() directly, so we use sprintf() instead.
bogdanm 0:9b334a45a8ff 45 // We only call malloc() for the sprintf() buffer if the buffer
bogdanm 0:9b334a45a8ff 46 // length is above a certain threshold, otherwise we use just the stack.
bogdanm 0:9b334a45a8ff 47 int RawSerial::printf(const char *format, ...) {
bogdanm 0:9b334a45a8ff 48 std::va_list arg;
bogdanm 0:9b334a45a8ff 49 va_start(arg, format);
mbed_official 47:e32b5dd8af6d 50 // ARMCC microlib does not properly handle a size of 0.
mbed_official 47:e32b5dd8af6d 51 // As a workaround supply a dummy buffer with a size of 1.
mbed_official 47:e32b5dd8af6d 52 char dummy_buf[1];
mbed_official 47:e32b5dd8af6d 53 int len = vsnprintf(dummy_buf, sizeof(dummy_buf), format, arg);
bogdanm 0:9b334a45a8ff 54 if (len < STRING_STACK_LIMIT) {
bogdanm 0:9b334a45a8ff 55 char temp[STRING_STACK_LIMIT];
bogdanm 0:9b334a45a8ff 56 vsprintf(temp, format, arg);
bogdanm 0:9b334a45a8ff 57 puts(temp);
bogdanm 0:9b334a45a8ff 58 } else {
bogdanm 0:9b334a45a8ff 59 char *temp = new char[len + 1];
bogdanm 0:9b334a45a8ff 60 vsprintf(temp, format, arg);
bogdanm 0:9b334a45a8ff 61 puts(temp);
bogdanm 0:9b334a45a8ff 62 delete[] temp;
bogdanm 0:9b334a45a8ff 63 }
bogdanm 0:9b334a45a8ff 64 va_end(arg);
bogdanm 0:9b334a45a8ff 65 return len;
bogdanm 0:9b334a45a8ff 66 }
bogdanm 0:9b334a45a8ff 67
bogdanm 0:9b334a45a8ff 68 } // namespace mbed
bogdanm 0:9b334a45a8ff 69
bogdanm 0:9b334a45a8ff 70 #endif