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RawSerial.h
00001 /* mbed Microcontroller Library 00002 * Copyright (c) 2006-2013 ARM Limited 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http://www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 #ifndef MBED_RAW_SERIAL_H 00017 #define MBED_RAW_SERIAL_H 00018 00019 #include "platform.h" 00020 00021 #if DEVICE_SERIAL 00022 00023 #include "SerialBase.h" 00024 #include "serial_api.h" 00025 00026 namespace mbed { 00027 00028 /** A serial port (UART) for communication with other serial devices 00029 * This is a variation of the Serial class that doesn't use streams, 00030 * thus making it safe to use in interrupt handlers with the RTOS. 00031 * 00032 * Can be used for Full Duplex communication, or Simplex by specifying 00033 * one pin as NC (Not Connected) 00034 * 00035 * Example: 00036 * @code 00037 * // Send a char to the PC 00038 * 00039 * #include "mbed.h" 00040 * 00041 * RawSerial pc(USBTX, USBRX); 00042 * 00043 * int main() { 00044 * pc.putc('A'); 00045 * } 00046 * @endcode 00047 */ 00048 class RawSerial: public SerialBase { 00049 00050 public: 00051 /** Create a RawSerial port, connected to the specified transmit and receive pins 00052 * 00053 * @param tx Transmit pin 00054 * @param rx Receive pin 00055 * 00056 * @note 00057 * Either tx or rx may be specified as NC if unused 00058 */ 00059 RawSerial(PinName tx, PinName rx); 00060 00061 /** Write a char to the serial port 00062 * 00063 * @param c The char to write 00064 * 00065 * @returns The written char or -1 if an error occured 00066 */ 00067 int putc(int c); 00068 00069 /** Read a char from the serial port 00070 * 00071 * @returns The char read from the serial port 00072 */ 00073 int getc(); 00074 }; 00075 00076 } // namespace mbed 00077 00078 #endif 00079 00080 #endif
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