Morpheus / mbed-hal

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Dependencies:   target-freescale

common/RawSerial.cpp@0:9c59db1fbc9e, 2016-03-23 (annotated)

Committer:
screamer
Date:
Wed Mar 23 21:36:09 2016 +0000
Revision:
0:9c59db1fbc9e
Initial revision

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:9c59db1fbc9e 1 /* mbed Microcontroller Library
screamer 0:9c59db1fbc9e 2 * Copyright (c) 2006-2013 ARM Limited
screamer 0:9c59db1fbc9e 3 *
screamer 0:9c59db1fbc9e 4 * Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:9c59db1fbc9e 5 * you may not use this file except in compliance with the License.
screamer 0:9c59db1fbc9e 6 * You may obtain a copy of the License at
screamer 0:9c59db1fbc9e 7 *
screamer 0:9c59db1fbc9e 8 * http://www.apache.org/licenses/LICENSE-2.0
screamer 0:9c59db1fbc9e 9 *
screamer 0:9c59db1fbc9e 10 * Unless required by applicable law or agreed to in writing, software
screamer 0:9c59db1fbc9e 11 * distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:9c59db1fbc9e 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:9c59db1fbc9e 13 * See the License for the specific language governing permissions and
screamer 0:9c59db1fbc9e 14 * limitations under the License.
screamer 0:9c59db1fbc9e 15 */
screamer 0:9c59db1fbc9e 16 #include "RawSerial.h"
screamer 0:9c59db1fbc9e 17 #include "wait_api.h"
screamer 0:9c59db1fbc9e 18 #include <cstdarg>
screamer 0:9c59db1fbc9e 19
screamer 0:9c59db1fbc9e 20 #if DEVICE_SERIAL
screamer 0:9c59db1fbc9e 21
screamer 0:9c59db1fbc9e 22 #define STRING_STACK_LIMIT 120
screamer 0:9c59db1fbc9e 23
screamer 0:9c59db1fbc9e 24 namespace mbed {
screamer 0:9c59db1fbc9e 25
screamer 0:9c59db1fbc9e 26 RawSerial::RawSerial(PinName tx, PinName rx) : SerialBase(tx, rx) {
screamer 0:9c59db1fbc9e 27 }
screamer 0:9c59db1fbc9e 28
screamer 0:9c59db1fbc9e 29 int RawSerial::getc() {
screamer 0:9c59db1fbc9e 30 return _base_getc();
screamer 0:9c59db1fbc9e 31 }
screamer 0:9c59db1fbc9e 32
screamer 0:9c59db1fbc9e 33 int RawSerial::putc(int c) {
screamer 0:9c59db1fbc9e 34 return _base_putc(c);
screamer 0:9c59db1fbc9e 35 }
screamer 0:9c59db1fbc9e 36
screamer 0:9c59db1fbc9e 37 int RawSerial::puts(const char *str) {
screamer 0:9c59db1fbc9e 38 while (*str)
screamer 0:9c59db1fbc9e 39 putc(*str ++);
screamer 0:9c59db1fbc9e 40 return 0;
screamer 0:9c59db1fbc9e 41 }
screamer 0:9c59db1fbc9e 42
screamer 0:9c59db1fbc9e 43 // Experimental support for printf in RawSerial. No Stream inheritance
screamer 0:9c59db1fbc9e 44 // means we can't call printf() directly, so we use sprintf() instead.
screamer 0:9c59db1fbc9e 45 // We only call malloc() for the sprintf() buffer if the buffer
screamer 0:9c59db1fbc9e 46 // length is above a certain threshold, otherwise we use just the stack.
screamer 0:9c59db1fbc9e 47 int RawSerial::printf(const char *format, ...) {
screamer 0:9c59db1fbc9e 48 std::va_list arg;
screamer 0:9c59db1fbc9e 49 va_start(arg, format);
screamer 0:9c59db1fbc9e 50 // ARMCC microlib does not properly handle a size of 0.
screamer 0:9c59db1fbc9e 51 // As a workaround supply a dummy buffer with a size of 1.
screamer 0:9c59db1fbc9e 52 char dummy_buf[1];
screamer 0:9c59db1fbc9e 53 int len = vsnprintf(dummy_buf, sizeof(dummy_buf), format, arg);
screamer 0:9c59db1fbc9e 54 if (len < STRING_STACK_LIMIT) {
screamer 0:9c59db1fbc9e 55 char temp[STRING_STACK_LIMIT];
screamer 0:9c59db1fbc9e 56 vsprintf(temp, format, arg);
screamer 0:9c59db1fbc9e 57 puts(temp);
screamer 0:9c59db1fbc9e 58 } else {
screamer 0:9c59db1fbc9e 59 char *temp = new char[len + 1];
screamer 0:9c59db1fbc9e 60 vsprintf(temp, format, arg);
screamer 0:9c59db1fbc9e 61 puts(temp);
screamer 0:9c59db1fbc9e 62 delete[] temp;
screamer 0:9c59db1fbc9e 63 }
screamer 0:9c59db1fbc9e 64 va_end(arg);
screamer 0:9c59db1fbc9e 65 return len;
screamer 0:9c59db1fbc9e 66 }
screamer 0:9c59db1fbc9e 67
screamer 0:9c59db1fbc9e 68 } // namespace mbed
screamer 0:9c59db1fbc9e 69
screamer 0:9c59db1fbc9e 70 #endif
screamer 0:9c59db1fbc9e 71