Vipin Ranka / MGAS_GR_Peach

This is the final version of Mini Gateway for Automation and Security desgined for Renesas GR Peach Design Contest

Dependencies:   GR-PEACH_video GraphicsFramework HTTPServer R_BSP mbed-rpc mbed-rtos Socket lwip-eth lwip-sys lwip FATFileSystem

Fork of mbed-os-example-mbed5-blinky by mbed-os-examples

mbed-dev/drivers/RawSerial.cpp@12:9a20164dcc47, 2017-01-11 (annotated)

Committer:
vipinranka
Date:
Wed Jan 11 11:41:30 2017 +0000
Revision:
12:9a20164dcc47
This is the final version MGAS Project for Renesas GR Peach Design Contest

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vipinranka 12:9a20164dcc47 1 /* mbed Microcontroller Library
vipinranka 12:9a20164dcc47 2 * Copyright (c) 2006-2013 ARM Limited
vipinranka 12:9a20164dcc47 3 *
vipinranka 12:9a20164dcc47 4 * Licensed under the Apache License, Version 2.0 (the "License");
vipinranka 12:9a20164dcc47 5 * you may not use this file except in compliance with the License.
vipinranka 12:9a20164dcc47 6 * You may obtain a copy of the License at
vipinranka 12:9a20164dcc47 7 *
vipinranka 12:9a20164dcc47 8 * http://www.apache.org/licenses/LICENSE-2.0
vipinranka 12:9a20164dcc47 9 *
vipinranka 12:9a20164dcc47 10 * Unless required by applicable law or agreed to in writing, software
vipinranka 12:9a20164dcc47 11 * distributed under the License is distributed on an "AS IS" BASIS,
vipinranka 12:9a20164dcc47 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vipinranka 12:9a20164dcc47 13 * See the License for the specific language governing permissions and
vipinranka 12:9a20164dcc47 14 * limitations under the License.
vipinranka 12:9a20164dcc47 15 */
vipinranka 12:9a20164dcc47 16 #include "drivers/RawSerial.h"
vipinranka 12:9a20164dcc47 17 #include "platform/wait_api.h"
vipinranka 12:9a20164dcc47 18 #include <cstdarg>
vipinranka 12:9a20164dcc47 19
vipinranka 12:9a20164dcc47 20 #if DEVICE_SERIAL
vipinranka 12:9a20164dcc47 21
vipinranka 12:9a20164dcc47 22 #define STRING_STACK_LIMIT 120
vipinranka 12:9a20164dcc47 23
vipinranka 12:9a20164dcc47 24 namespace mbed {
vipinranka 12:9a20164dcc47 25
vipinranka 12:9a20164dcc47 26 RawSerial::RawSerial(PinName tx, PinName rx, int baud) : SerialBase(tx, rx, baud) {
vipinranka 12:9a20164dcc47 27 // No lock needed in the constructor
vipinranka 12:9a20164dcc47 28 }
vipinranka 12:9a20164dcc47 29
vipinranka 12:9a20164dcc47 30 int RawSerial::getc() {
vipinranka 12:9a20164dcc47 31 lock();
vipinranka 12:9a20164dcc47 32 int ret = _base_getc();
vipinranka 12:9a20164dcc47 33 unlock();
vipinranka 12:9a20164dcc47 34 return ret;
vipinranka 12:9a20164dcc47 35 }
vipinranka 12:9a20164dcc47 36
vipinranka 12:9a20164dcc47 37 int RawSerial::putc(int c) {
vipinranka 12:9a20164dcc47 38 lock();
vipinranka 12:9a20164dcc47 39 int ret = _base_putc(c);
vipinranka 12:9a20164dcc47 40 unlock();
vipinranka 12:9a20164dcc47 41 return ret;
vipinranka 12:9a20164dcc47 42 }
vipinranka 12:9a20164dcc47 43
vipinranka 12:9a20164dcc47 44 int RawSerial::puts(const char *str) {
vipinranka 12:9a20164dcc47 45 lock();
vipinranka 12:9a20164dcc47 46 while (*str)
vipinranka 12:9a20164dcc47 47 putc(*str ++);
vipinranka 12:9a20164dcc47 48 unlock();
vipinranka 12:9a20164dcc47 49 return 0;
vipinranka 12:9a20164dcc47 50 }
vipinranka 12:9a20164dcc47 51
vipinranka 12:9a20164dcc47 52 // Experimental support for printf in RawSerial. No Stream inheritance
vipinranka 12:9a20164dcc47 53 // means we can't call printf() directly, so we use sprintf() instead.
vipinranka 12:9a20164dcc47 54 // We only call malloc() for the sprintf() buffer if the buffer
vipinranka 12:9a20164dcc47 55 // length is above a certain threshold, otherwise we use just the stack.
vipinranka 12:9a20164dcc47 56 int RawSerial::printf(const char *format, ...) {
vipinranka 12:9a20164dcc47 57 lock();
vipinranka 12:9a20164dcc47 58 std::va_list arg;
vipinranka 12:9a20164dcc47 59 va_start(arg, format);
vipinranka 12:9a20164dcc47 60 // ARMCC microlib does not properly handle a size of 0.
vipinranka 12:9a20164dcc47 61 // As a workaround supply a dummy buffer with a size of 1.
vipinranka 12:9a20164dcc47 62 char dummy_buf[1];
vipinranka 12:9a20164dcc47 63 int len = vsnprintf(dummy_buf, sizeof(dummy_buf), format, arg);
vipinranka 12:9a20164dcc47 64 if (len < STRING_STACK_LIMIT) {
vipinranka 12:9a20164dcc47 65 char temp[STRING_STACK_LIMIT];
vipinranka 12:9a20164dcc47 66 vsprintf(temp, format, arg);
vipinranka 12:9a20164dcc47 67 puts(temp);
vipinranka 12:9a20164dcc47 68 } else {
vipinranka 12:9a20164dcc47 69 char *temp = new char[len + 1];
vipinranka 12:9a20164dcc47 70 vsprintf(temp, format, arg);
vipinranka 12:9a20164dcc47 71 puts(temp);
vipinranka 12:9a20164dcc47 72 delete[] temp;
vipinranka 12:9a20164dcc47 73 }
vipinranka 12:9a20164dcc47 74 va_end(arg);
vipinranka 12:9a20164dcc47 75 unlock();
vipinranka 12:9a20164dcc47 76 return len;
vipinranka 12:9a20164dcc47 77 }
vipinranka 12:9a20164dcc47 78
vipinranka 12:9a20164dcc47 79 /** Acquire exclusive access to this serial port
vipinranka 12:9a20164dcc47 80 */
vipinranka 12:9a20164dcc47 81 void RawSerial::lock() {
vipinranka 12:9a20164dcc47 82 // No lock used - external synchronization required
vipinranka 12:9a20164dcc47 83 }
vipinranka 12:9a20164dcc47 84
vipinranka 12:9a20164dcc47 85 /** Release exclusive access to this serial port
vipinranka 12:9a20164dcc47 86 */
vipinranka 12:9a20164dcc47 87 void RawSerial::unlock() {
vipinranka 12:9a20164dcc47 88 // No lock used - external synchronization required
vipinranka 12:9a20164dcc47 89 }
vipinranka 12:9a20164dcc47 90
vipinranka 12:9a20164dcc47 91 } // namespace mbed
vipinranka 12:9a20164dcc47 92
vipinranka 12:9a20164dcc47 93 #endif