Magnificent7 / Hackathon

Includes library modifications to allow access to AIN_4 (AIN_0 / 5)

mbd_os/hal/common/RawSerial.cpp@0:eafc3fd41f75, 2016-09-20 (annotated)

Committer:
bryantaylor
Date:
Tue Sep 20 21:26:12 2016 +0000
Revision:
0:eafc3fd41f75
hackathon

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bryantaylor 0:eafc3fd41f75 1 /* mbed Microcontroller Library
bryantaylor 0:eafc3fd41f75 2 * Copyright (c) 2006-2013 ARM Limited
bryantaylor 0:eafc3fd41f75 3 *
bryantaylor 0:eafc3fd41f75 4 * Licensed under the Apache License, Version 2.0 (the "License");
bryantaylor 0:eafc3fd41f75 5 * you may not use this file except in compliance with the License.
bryantaylor 0:eafc3fd41f75 6 * You may obtain a copy of the License at
bryantaylor 0:eafc3fd41f75 7 *
bryantaylor 0:eafc3fd41f75 8 * http://www.apache.org/licenses/LICENSE-2.0
bryantaylor 0:eafc3fd41f75 9 *
bryantaylor 0:eafc3fd41f75 10 * Unless required by applicable law or agreed to in writing, software
bryantaylor 0:eafc3fd41f75 11 * distributed under the License is distributed on an "AS IS" BASIS,
bryantaylor 0:eafc3fd41f75 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bryantaylor 0:eafc3fd41f75 13 * See the License for the specific language governing permissions and
bryantaylor 0:eafc3fd41f75 14 * limitations under the License.
bryantaylor 0:eafc3fd41f75 15 */
bryantaylor 0:eafc3fd41f75 16 #include "RawSerial.h"
bryantaylor 0:eafc3fd41f75 17 #include "wait_api.h"
bryantaylor 0:eafc3fd41f75 18 #include <cstdarg>
bryantaylor 0:eafc3fd41f75 19
bryantaylor 0:eafc3fd41f75 20 #if DEVICE_SERIAL
bryantaylor 0:eafc3fd41f75 21
bryantaylor 0:eafc3fd41f75 22 #define STRING_STACK_LIMIT 120
bryantaylor 0:eafc3fd41f75 23
bryantaylor 0:eafc3fd41f75 24 namespace mbed {
bryantaylor 0:eafc3fd41f75 25
bryantaylor 0:eafc3fd41f75 26 RawSerial::RawSerial(PinName tx, PinName rx) : SerialBase(tx, rx) {
bryantaylor 0:eafc3fd41f75 27 // No lock needed in the constructor
bryantaylor 0:eafc3fd41f75 28 }
bryantaylor 0:eafc3fd41f75 29
bryantaylor 0:eafc3fd41f75 30 int RawSerial::getc() {
bryantaylor 0:eafc3fd41f75 31 lock();
bryantaylor 0:eafc3fd41f75 32 int ret = _base_getc();
bryantaylor 0:eafc3fd41f75 33 unlock();
bryantaylor 0:eafc3fd41f75 34 return ret;
bryantaylor 0:eafc3fd41f75 35 }
bryantaylor 0:eafc3fd41f75 36
bryantaylor 0:eafc3fd41f75 37 int RawSerial::putc(int c) {
bryantaylor 0:eafc3fd41f75 38 lock();
bryantaylor 0:eafc3fd41f75 39 int ret = _base_putc(c);
bryantaylor 0:eafc3fd41f75 40 unlock();
bryantaylor 0:eafc3fd41f75 41 return ret;
bryantaylor 0:eafc3fd41f75 42 }
bryantaylor 0:eafc3fd41f75 43
bryantaylor 0:eafc3fd41f75 44 int RawSerial::puts(const char *str) {
bryantaylor 0:eafc3fd41f75 45 lock();
bryantaylor 0:eafc3fd41f75 46 while (*str)
bryantaylor 0:eafc3fd41f75 47 putc(*str ++);
bryantaylor 0:eafc3fd41f75 48 unlock();
bryantaylor 0:eafc3fd41f75 49 return 0;
bryantaylor 0:eafc3fd41f75 50 }
bryantaylor 0:eafc3fd41f75 51
bryantaylor 0:eafc3fd41f75 52 // Experimental support for printf in RawSerial. No Stream inheritance
bryantaylor 0:eafc3fd41f75 53 // means we can't call printf() directly, so we use sprintf() instead.
bryantaylor 0:eafc3fd41f75 54 // We only call malloc() for the sprintf() buffer if the buffer
bryantaylor 0:eafc3fd41f75 55 // length is above a certain threshold, otherwise we use just the stack.
bryantaylor 0:eafc3fd41f75 56 int RawSerial::printf(const char *format, ...) {
bryantaylor 0:eafc3fd41f75 57 lock();
bryantaylor 0:eafc3fd41f75 58 std::va_list arg;
bryantaylor 0:eafc3fd41f75 59 va_start(arg, format);
bryantaylor 0:eafc3fd41f75 60 // ARMCC microlib does not properly handle a size of 0.
bryantaylor 0:eafc3fd41f75 61 // As a workaround supply a dummy buffer with a size of 1.
bryantaylor 0:eafc3fd41f75 62 char dummy_buf[1];
bryantaylor 0:eafc3fd41f75 63 int len = vsnprintf(dummy_buf, sizeof(dummy_buf), format, arg);
bryantaylor 0:eafc3fd41f75 64 if (len < STRING_STACK_LIMIT) {
bryantaylor 0:eafc3fd41f75 65 char temp[STRING_STACK_LIMIT];
bryantaylor 0:eafc3fd41f75 66 vsprintf(temp, format, arg);
bryantaylor 0:eafc3fd41f75 67 puts(temp);
bryantaylor 0:eafc3fd41f75 68 } else {
bryantaylor 0:eafc3fd41f75 69 char *temp = new char[len + 1];
bryantaylor 0:eafc3fd41f75 70 vsprintf(temp, format, arg);
bryantaylor 0:eafc3fd41f75 71 puts(temp);
bryantaylor 0:eafc3fd41f75 72 delete[] temp;
bryantaylor 0:eafc3fd41f75 73 }
bryantaylor 0:eafc3fd41f75 74 va_end(arg);
bryantaylor 0:eafc3fd41f75 75 unlock();
bryantaylor 0:eafc3fd41f75 76 return len;
bryantaylor 0:eafc3fd41f75 77 }
bryantaylor 0:eafc3fd41f75 78
bryantaylor 0:eafc3fd41f75 79 /** Acquire exclusive access to this serial port
bryantaylor 0:eafc3fd41f75 80 */
bryantaylor 0:eafc3fd41f75 81 void RawSerial::lock() {
bryantaylor 0:eafc3fd41f75 82 // No lock used - external synchronization required
bryantaylor 0:eafc3fd41f75 83 }
bryantaylor 0:eafc3fd41f75 84
bryantaylor 0:eafc3fd41f75 85 /** Release exclusive access to this serial port
bryantaylor 0:eafc3fd41f75 86 */
bryantaylor 0:eafc3fd41f75 87 void RawSerial::unlock() {
bryantaylor 0:eafc3fd41f75 88 // No lock used - external synchronization required
bryantaylor 0:eafc3fd41f75 89 }
bryantaylor 0:eafc3fd41f75 90
bryantaylor 0:eafc3fd41f75 91 } // namespace mbed
bryantaylor 0:eafc3fd41f75 92
bryantaylor 0:eafc3fd41f75 93 #endif