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Dependents:   2doejemplo Labo_TRSE_Drone

Fork of mbed by mbed official

SerialBase.h@68:f37f3b9c9f0b, 2013-10-23 (annotated)

Committer:
bogdanm
Date:
Wed Oct 23 16:23:06 2013 +0300
Revision:
68:f37f3b9c9f0b
Bug fixes and new features



Many changes in this release, including:



- The new RawSerial class is a simple wrapper over the serial HAL that can

be safely used from an interrupt handler.

- Interrupt chaining code was removed from InterruptIn, Serial and Ticker

because it caused lots of issues with the RTOS. Interrupt chaining is

still possible using the InterruptManager class.

- InterruptIn has two new methods (enable and disable irq)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 68:f37f3b9c9f0b 1 /* mbed Microcontroller Library
bogdanm 68:f37f3b9c9f0b 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 68:f37f3b9c9f0b 3 *
bogdanm 68:f37f3b9c9f0b 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 68:f37f3b9c9f0b 5 * you may not use this file except in compliance with the License.
bogdanm 68:f37f3b9c9f0b 6 * You may obtain a copy of the License at
bogdanm 68:f37f3b9c9f0b 7 *
bogdanm 68:f37f3b9c9f0b 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 68:f37f3b9c9f0b 9 *
bogdanm 68:f37f3b9c9f0b 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 68:f37f3b9c9f0b 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 68:f37f3b9c9f0b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 68:f37f3b9c9f0b 13 * See the License for the specific language governing permissions and
bogdanm 68:f37f3b9c9f0b 14 * limitations under the License.
bogdanm 68:f37f3b9c9f0b 15 */
bogdanm 68:f37f3b9c9f0b 16 #ifndef MBED_SERIALBASE_H
bogdanm 68:f37f3b9c9f0b 17 #define MBED_SERIALBASE_H
bogdanm 68:f37f3b9c9f0b 18
bogdanm 68:f37f3b9c9f0b 19 #include "platform.h"
bogdanm 68:f37f3b9c9f0b 20
bogdanm 68:f37f3b9c9f0b 21 #if DEVICE_SERIAL
bogdanm 68:f37f3b9c9f0b 22
bogdanm 68:f37f3b9c9f0b 23 #include "Stream.h"
bogdanm 68:f37f3b9c9f0b 24 #include "FunctionPointer.h"
bogdanm 68:f37f3b9c9f0b 25 #include "serial_api.h"
bogdanm 68:f37f3b9c9f0b 26
bogdanm 68:f37f3b9c9f0b 27 namespace mbed {
bogdanm 68:f37f3b9c9f0b 28
bogdanm 68:f37f3b9c9f0b 29 /** A base class for serial port implementations
bogdanm 68:f37f3b9c9f0b 30 * Can't be instantiated directly (use Serial or RawSerial)
bogdanm 68:f37f3b9c9f0b 31 */
bogdanm 68:f37f3b9c9f0b 32 class SerialBase {
bogdanm 68:f37f3b9c9f0b 33
bogdanm 68:f37f3b9c9f0b 34 public:
bogdanm 68:f37f3b9c9f0b 35 /** Set the baud rate of the serial port
bogdanm 68:f37f3b9c9f0b 36 *
bogdanm 68:f37f3b9c9f0b 37 * @param baudrate The baudrate of the serial port (default = 9600).
bogdanm 68:f37f3b9c9f0b 38 */
bogdanm 68:f37f3b9c9f0b 39 void baud(int baudrate);
bogdanm 68:f37f3b9c9f0b 40
bogdanm 68:f37f3b9c9f0b 41 enum Parity {
bogdanm 68:f37f3b9c9f0b 42 None = 0,
bogdanm 68:f37f3b9c9f0b 43 Odd,
bogdanm 68:f37f3b9c9f0b 44 Even,
bogdanm 68:f37f3b9c9f0b 45 Forced1,
bogdanm 68:f37f3b9c9f0b 46 Forced0
bogdanm 68:f37f3b9c9f0b 47 };
bogdanm 68:f37f3b9c9f0b 48
bogdanm 68:f37f3b9c9f0b 49 enum IrqType {
bogdanm 68:f37f3b9c9f0b 50 RxIrq = 0,
bogdanm 68:f37f3b9c9f0b 51 TxIrq
bogdanm 68:f37f3b9c9f0b 52 };
bogdanm 68:f37f3b9c9f0b 53
bogdanm 68:f37f3b9c9f0b 54 /** Set the transmission format used by the serial port
bogdanm 68:f37f3b9c9f0b 55 *
bogdanm 68:f37f3b9c9f0b 56 * @param bits The number of bits in a word (5-8; default = 8)
bogdanm 68:f37f3b9c9f0b 57 * @param parity The parity used (SerialBase::None, SerialBase::Odd, SerialBase::Even, SerialBase::Forced1, SerialBase::Forced0; default = SerialBase::None)
bogdanm 68:f37f3b9c9f0b 58 * @param stop The number of stop bits (1 or 2; default = 1)
bogdanm 68:f37f3b9c9f0b 59 */
bogdanm 68:f37f3b9c9f0b 60 void format(int bits=8, Parity parity=SerialBase::None, int stop_bits=1);
bogdanm 68:f37f3b9c9f0b 61
bogdanm 68:f37f3b9c9f0b 62 /** Determine if there is a character available to read
bogdanm 68:f37f3b9c9f0b 63 *
bogdanm 68:f37f3b9c9f0b 64 * @returns
bogdanm 68:f37f3b9c9f0b 65 * 1 if there is a character available to read,
bogdanm 68:f37f3b9c9f0b 66 * 0 otherwise
bogdanm 68:f37f3b9c9f0b 67 */
bogdanm 68:f37f3b9c9f0b 68 int readable();
bogdanm 68:f37f3b9c9f0b 69
bogdanm 68:f37f3b9c9f0b 70 /** Determine if there is space available to write a character
bogdanm 68:f37f3b9c9f0b 71 *
bogdanm 68:f37f3b9c9f0b 72 * @returns
bogdanm 68:f37f3b9c9f0b 73 * 1 if there is space to write a character,
bogdanm 68:f37f3b9c9f0b 74 * 0 otherwise
bogdanm 68:f37f3b9c9f0b 75 */
bogdanm 68:f37f3b9c9f0b 76 int writeable();
bogdanm 68:f37f3b9c9f0b 77
bogdanm 68:f37f3b9c9f0b 78 /** Attach a function to call whenever a serial interrupt is generated
bogdanm 68:f37f3b9c9f0b 79 *
bogdanm 68:f37f3b9c9f0b 80 * @param fptr A pointer to a void function, or 0 to set as none
bogdanm 68:f37f3b9c9f0b 81 * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
bogdanm 68:f37f3b9c9f0b 82 */
bogdanm 68:f37f3b9c9f0b 83 void attach(void (*fptr)(void), IrqType type=RxIrq);
bogdanm 68:f37f3b9c9f0b 84
bogdanm 68:f37f3b9c9f0b 85 /** Attach a member function to call whenever a serial interrupt is generated
bogdanm 68:f37f3b9c9f0b 86 *
bogdanm 68:f37f3b9c9f0b 87 * @param tptr pointer to the object to call the member function on
bogdanm 68:f37f3b9c9f0b 88 * @param mptr pointer to the member function to be called
bogdanm 68:f37f3b9c9f0b 89 * @param type Which serial interrupt to attach the member function to (Seriall::RxIrq for receive, TxIrq for transmit buffer empty)
bogdanm 68:f37f3b9c9f0b 90 */
bogdanm 68:f37f3b9c9f0b 91 template<typename T>
bogdanm 68:f37f3b9c9f0b 92 void attach(T* tptr, void (T::*mptr)(void), IrqType type=RxIrq) {
bogdanm 68:f37f3b9c9f0b 93 if((mptr != NULL) && (tptr != NULL)) {
bogdanm 68:f37f3b9c9f0b 94 _irq[type].attach(tptr, mptr);
bogdanm 68:f37f3b9c9f0b 95 serial_irq_set(&_serial, (SerialIrq)type, 1);
bogdanm 68:f37f3b9c9f0b 96 }
bogdanm 68:f37f3b9c9f0b 97 }
bogdanm 68:f37f3b9c9f0b 98
bogdanm 68:f37f3b9c9f0b 99 /** Generate a break condition on the serial line
bogdanm 68:f37f3b9c9f0b 100 */
bogdanm 68:f37f3b9c9f0b 101 void send_break();
bogdanm 68:f37f3b9c9f0b 102
bogdanm 68:f37f3b9c9f0b 103 static void _irq_handler(uint32_t id, SerialIrq irq_type);
bogdanm 68:f37f3b9c9f0b 104
bogdanm 68:f37f3b9c9f0b 105 protected:
bogdanm 68:f37f3b9c9f0b 106 SerialBase(PinName tx, PinName rx);
bogdanm 68:f37f3b9c9f0b 107
bogdanm 68:f37f3b9c9f0b 108 int _base_getc();
bogdanm 68:f37f3b9c9f0b 109 int _base_putc(int c);
bogdanm 68:f37f3b9c9f0b 110
bogdanm 68:f37f3b9c9f0b 111 serial_t _serial;
bogdanm 68:f37f3b9c9f0b 112 FunctionPointer _irq[2];
bogdanm 68:f37f3b9c9f0b 113 int _baud;
bogdanm 68:f37f3b9c9f0b 114 };
bogdanm 68:f37f3b9c9f0b 115
bogdanm 68:f37f3b9c9f0b 116 } // namespace mbed
bogdanm 68:f37f3b9c9f0b 117
bogdanm 68:f37f3b9c9f0b 118 #endif
bogdanm 68:f37f3b9c9f0b 119
bogdanm 68:f37f3b9c9f0b 120 #endif