Jonathan Piat / mbed-src

mbed library sources

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api/Serial.h@13:0645d8841f51, 2013-08-05 (annotated)

Committer:
bogdanm
Date:
Mon Aug 05 14:12:34 2013 +0300
Revision:
13:0645d8841f51
Parent:
10:3bc89ef62ce7
Child:
15:4892fe388435
Update mbed sources to revision 64

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #ifndef MBED_SERIAL_H
bogdanm 13:0645d8841f51 17 #define MBED_SERIAL_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "platform.h"
bogdanm 13:0645d8841f51 20
bogdanm 13:0645d8841f51 21 #if DEVICE_SERIAL
bogdanm 13:0645d8841f51 22
bogdanm 13:0645d8841f51 23 #include "Stream.h"
bogdanm 13:0645d8841f51 24 #include "FunctionPointer.h"
bogdanm 13:0645d8841f51 25 #include "serial_api.h"
bogdanm 13:0645d8841f51 26
bogdanm 13:0645d8841f51 27 namespace mbed {
bogdanm 13:0645d8841f51 28
bogdanm 13:0645d8841f51 29 /** A serial port (UART) for communication with other serial devices
bogdanm 13:0645d8841f51 30 *
bogdanm 13:0645d8841f51 31 * Can be used for Full Duplex communication, or Simplex by specifying
bogdanm 13:0645d8841f51 32 * one pin as NC (Not Connected)
bogdanm 13:0645d8841f51 33 *
bogdanm 13:0645d8841f51 34 * Example:
bogdanm 13:0645d8841f51 35 * @code
bogdanm 13:0645d8841f51 36 * // Print "Hello World" to the PC
bogdanm 13:0645d8841f51 37 *
bogdanm 13:0645d8841f51 38 * #include "mbed.h"
bogdanm 13:0645d8841f51 39 *
bogdanm 13:0645d8841f51 40 * Serial pc(USBTX, USBRX);
bogdanm 13:0645d8841f51 41 *
bogdanm 13:0645d8841f51 42 * int main() {
bogdanm 13:0645d8841f51 43 * pc.printf("Hello World\n");
bogdanm 13:0645d8841f51 44 * }
bogdanm 13:0645d8841f51 45 * @endcode
bogdanm 13:0645d8841f51 46 */
bogdanm 13:0645d8841f51 47 class Serial : public Stream {
bogdanm 13:0645d8841f51 48
bogdanm 13:0645d8841f51 49 public:
bogdanm 13:0645d8841f51 50 /** Create a Serial port, connected to the specified transmit and receive pins
bogdanm 13:0645d8841f51 51 *
bogdanm 13:0645d8841f51 52 * @param tx Transmit pin
bogdanm 13:0645d8841f51 53 * @param rx Receive pin
bogdanm 13:0645d8841f51 54 *
bogdanm 13:0645d8841f51 55 * @note
bogdanm 13:0645d8841f51 56 * Either tx or rx may be specified as NC if unused
bogdanm 13:0645d8841f51 57 */
bogdanm 13:0645d8841f51 58 Serial(PinName tx, PinName rx, const char *name=NULL);
bogdanm 13:0645d8841f51 59
bogdanm 13:0645d8841f51 60 /** Set the baud rate of the serial port
bogdanm 13:0645d8841f51 61 *
bogdanm 13:0645d8841f51 62 * @param baudrate The baudrate of the serial port (default = 9600).
bogdanm 13:0645d8841f51 63 */
bogdanm 13:0645d8841f51 64 void baud(int baudrate);
bogdanm 13:0645d8841f51 65
bogdanm 13:0645d8841f51 66 enum Parity {
bogdanm 13:0645d8841f51 67 None = 0,
bogdanm 13:0645d8841f51 68 Odd,
bogdanm 13:0645d8841f51 69 Even,
bogdanm 13:0645d8841f51 70 Forced1,
bogdanm 13:0645d8841f51 71 Forced0
bogdanm 13:0645d8841f51 72 };
bogdanm 13:0645d8841f51 73
bogdanm 13:0645d8841f51 74 enum IrqType {
bogdanm 13:0645d8841f51 75 RxIrq = 0,
bogdanm 13:0645d8841f51 76 TxIrq
bogdanm 13:0645d8841f51 77 };
bogdanm 13:0645d8841f51 78
bogdanm 13:0645d8841f51 79 /** Set the transmission format used by the Serial port
bogdanm 13:0645d8841f51 80 *
bogdanm 13:0645d8841f51 81 * @param bits The number of bits in a word (5-8; default = 8)
bogdanm 13:0645d8841f51 82 * @param parity The parity used (Serial::None, Serial::Odd, Serial::Even, Serial::Forced1, Serial::Forced0; default = Serial::None)
bogdanm 13:0645d8841f51 83 * @param stop The number of stop bits (1 or 2; default = 1)
bogdanm 13:0645d8841f51 84 */
bogdanm 13:0645d8841f51 85 void format(int bits = 8, Parity parity=Serial::None, int stop_bits=1);
bogdanm 13:0645d8841f51 86
bogdanm 13:0645d8841f51 87 /** Determine if there is a character available to read
bogdanm 13:0645d8841f51 88 *
bogdanm 13:0645d8841f51 89 * @returns
bogdanm 13:0645d8841f51 90 * 1 if there is a character available to read,
bogdanm 13:0645d8841f51 91 * 0 otherwise
bogdanm 13:0645d8841f51 92 */
bogdanm 13:0645d8841f51 93 int readable();
bogdanm 13:0645d8841f51 94
bogdanm 13:0645d8841f51 95 /** Determine if there is space available to write a character
bogdanm 13:0645d8841f51 96 *
bogdanm 13:0645d8841f51 97 * @returns
bogdanm 13:0645d8841f51 98 * 1 if there is space to write a character,
bogdanm 13:0645d8841f51 99 * 0 otherwise
bogdanm 13:0645d8841f51 100 */
bogdanm 13:0645d8841f51 101 int writeable();
bogdanm 13:0645d8841f51 102
bogdanm 13:0645d8841f51 103 /** Attach a function to call whenever a serial interrupt is generated
bogdanm 13:0645d8841f51 104 *
bogdanm 13:0645d8841f51 105 * @param fptr A pointer to a void function, or 0 to set as none
bogdanm 13:0645d8841f51 106 * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
bogdanm 13:0645d8841f51 107 */
bogdanm 13:0645d8841f51 108 void attach(void (*fptr)(void), IrqType type=RxIrq);
bogdanm 13:0645d8841f51 109
bogdanm 13:0645d8841f51 110 /** Attach a member function to call whenever a serial interrupt is generated
bogdanm 13:0645d8841f51 111 *
bogdanm 13:0645d8841f51 112 * @param tptr pointer to the object to call the member function on
bogdanm 13:0645d8841f51 113 * @param mptr pointer to the member function to be called
bogdanm 13:0645d8841f51 114 * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
bogdanm 13:0645d8841f51 115 */
bogdanm 13:0645d8841f51 116 template<typename T>
bogdanm 13:0645d8841f51 117 void attach(T* tptr, void (T::*mptr)(void), IrqType type=RxIrq) {
bogdanm 13:0645d8841f51 118 if((mptr != NULL) && (tptr != NULL)) {
bogdanm 13:0645d8841f51 119 _irq[type].attach(tptr, mptr);
bogdanm 13:0645d8841f51 120 serial_irq_set(&_serial, (SerialIrq)type, 1);
bogdanm 13:0645d8841f51 121 }
bogdanm 13:0645d8841f51 122 }
bogdanm 13:0645d8841f51 123
bogdanm 13:0645d8841f51 124 /** Generate a break condition on the serial line
bogdanm 13:0645d8841f51 125 */
bogdanm 13:0645d8841f51 126 void send_break();
bogdanm 13:0645d8841f51 127
bogdanm 13:0645d8841f51 128 static void _irq_handler(uint32_t id, SerialIrq irq_type);
bogdanm 13:0645d8841f51 129
bogdanm 13:0645d8841f51 130 protected:
bogdanm 13:0645d8841f51 131 virtual int _getc();
bogdanm 13:0645d8841f51 132 virtual int _putc(int c);
bogdanm 13:0645d8841f51 133
bogdanm 13:0645d8841f51 134 serial_t _serial;
bogdanm 13:0645d8841f51 135 FunctionPointer _irq[2];
bogdanm 13:0645d8841f51 136 int _baud;
bogdanm 13:0645d8841f51 137 };
bogdanm 13:0645d8841f51 138
bogdanm 13:0645d8841f51 139 } // namespace mbed
bogdanm 13:0645d8841f51 140
bogdanm 13:0645d8841f51 141 #endif
bogdanm 13:0645d8841f51 142
bogdanm 13:0645d8841f51 143 #endif