tmk_core/tool/mbed/mbed-sdk/libraries/mbed/api/RawSerial.h

   1 /* mbed Microcontroller Library
   2  * Copyright (c) 2006-2013 ARM Limited
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 #ifndef MBED_RAW_SERIAL_H
  17 #define MBED_RAW_SERIAL_H
  18
  19 #include "platform.h"
  20
  21 #if DEVICE_SERIAL
  22
  23 #include "SerialBase.h"
  24 #include "serial_api.h"
  25
  26 namespace mbed {
  27
  28 /** A serial port (UART) for communication with other serial devices
  29  * This is a variation of the Serial class that doesn't use streams,
  30  * thus making it safe to use in interrupt handlers with the RTOS.
  31  *
  32  * Can be used for Full Duplex communication, or Simplex by specifying
  33  * one pin as NC (Not Connected)
  34  *
  35  * Example:
  36  * @code
  37  * // Send a char to the PC
  38  *
  39  * #include "mbed.h"
  40  *
  41  * RawSerial pc(USBTX, USBRX);
  42  *
  43  * int main() {
  44  *     pc.putc('A');
  45  * }
  46  * @endcode
  47  */
  48 class RawSerial: public SerialBase {
  49
  50 public:
  51     /** Create a RawSerial port, connected to the specified transmit and receive pins
  52      *
  53      *  @param tx Transmit pin
  54      *  @param rx Receive pin
  55      *
  56      *  @note
  57      *    Either tx or rx may be specified as NC if unused
  58      */
  59     RawSerial(PinName tx, PinName rx);
  60
  61     /** Write a char to the serial port
  62      *
  63      * @param c The char to write
  64      *
  65      * @returns The written char or -1 if an error occured
  66      */
  67     int putc(int c);
  68
  69     /** Read a char from the serial port
  70      *
  71      * @returns The char read from the serial port
  72      */
  73     int getc();
  74
  75     /** Write a string to the serial port
  76      *
  77      * @param str The string to write
  78      *
  79      * @returns 0 if the write succeeds, EOF for error
  80      */
  81     int puts(const char *str);
  82
  83     int printf(const char *format, ...);
  84 };
  85
  86 } // namespace mbed
  87
  88 #endif
  89
  90 #endif