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

Committer:
bogdanm
Date:
Wed Oct 23 16:23:06 2013 +0300
Revision:
68:f37f3b9c9f0b
Child:
75:dc225afb6914
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_RAW_SERIAL_H
bogdanm 68:f37f3b9c9f0b 17 #define MBED_RAW_SERIAL_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 "SerialBase.h"
bogdanm 68:f37f3b9c9f0b 24 #include "serial_api.h"
bogdanm 68:f37f3b9c9f0b 25
bogdanm 68:f37f3b9c9f0b 26 namespace mbed {
bogdanm 68:f37f3b9c9f0b 27
bogdanm 68:f37f3b9c9f0b 28 /** A serial port (UART) for communication with other serial devices
bogdanm 68:f37f3b9c9f0b 29 * This is a variation of the Serial class that doesn't use streams,
bogdanm 68:f37f3b9c9f0b 30 * thus making it safe to use in interrupt handlers with the RTOS.
bogdanm 68:f37f3b9c9f0b 31 *
bogdanm 68:f37f3b9c9f0b 32 * Can be used for Full Duplex communication, or Simplex by specifying
bogdanm 68:f37f3b9c9f0b 33 * one pin as NC (Not Connected)
bogdanm 68:f37f3b9c9f0b 34 *
bogdanm 68:f37f3b9c9f0b 35 * Example:
bogdanm 68:f37f3b9c9f0b 36 * @code
bogdanm 68:f37f3b9c9f0b 37 * // Send a char to the PC
bogdanm 68:f37f3b9c9f0b 38 *
bogdanm 68:f37f3b9c9f0b 39 * #include "mbed.h"
bogdanm 68:f37f3b9c9f0b 40 *
bogdanm 68:f37f3b9c9f0b 41 * RawSerial pc(USBTX, USBRX);
bogdanm 68:f37f3b9c9f0b 42 *
bogdanm 68:f37f3b9c9f0b 43 * int main() {
bogdanm 68:f37f3b9c9f0b 44 * pc.putc('A');
bogdanm 68:f37f3b9c9f0b 45 * }
bogdanm 68:f37f3b9c9f0b 46 * @endcode
bogdanm 68:f37f3b9c9f0b 47 */
bogdanm 68:f37f3b9c9f0b 48 class RawSerial: public SerialBase {
bogdanm 68:f37f3b9c9f0b 49
bogdanm 68:f37f3b9c9f0b 50 public:
bogdanm 68:f37f3b9c9f0b 51 /** Create a RawSerial port, connected to the specified transmit and receive pins
bogdanm 68:f37f3b9c9f0b 52 *
bogdanm 68:f37f3b9c9f0b 53 * @param tx Transmit pin
bogdanm 68:f37f3b9c9f0b 54 * @param rx Receive pin
bogdanm 68:f37f3b9c9f0b 55 *
bogdanm 68:f37f3b9c9f0b 56 * @note
bogdanm 68:f37f3b9c9f0b 57 * Either tx or rx may be specified as NC if unused
bogdanm 68:f37f3b9c9f0b 58 */
bogdanm 68:f37f3b9c9f0b 59 RawSerial(PinName tx, PinName rx);
bogdanm 68:f37f3b9c9f0b 60
bogdanm 68:f37f3b9c9f0b 61 /** Write a char to the serial port
bogdanm 68:f37f3b9c9f0b 62 *
bogdanm 68:f37f3b9c9f0b 63 * @param c The char to write
bogdanm 68:f37f3b9c9f0b 64 *
bogdanm 68:f37f3b9c9f0b 65 * @returns The written char or -1 if an error occured
bogdanm 68:f37f3b9c9f0b 66 */
bogdanm 68:f37f3b9c9f0b 67 int putc(int c);
bogdanm 68:f37f3b9c9f0b 68
bogdanm 68:f37f3b9c9f0b 69 /** Read a char from the serial port
bogdanm 68:f37f3b9c9f0b 70 *
bogdanm 68:f37f3b9c9f0b 71 * @returns The char read from the serial port
bogdanm 68:f37f3b9c9f0b 72 */
bogdanm 68:f37f3b9c9f0b 73 int getc();
bogdanm 68:f37f3b9c9f0b 74 };
bogdanm 68:f37f3b9c9f0b 75
bogdanm 68:f37f3b9c9f0b 76 } // namespace mbed
bogdanm 68:f37f3b9c9f0b 77
bogdanm 68:f37f3b9c9f0b 78 #endif
bogdanm 68:f37f3b9c9f0b 79
bogdanm 68:f37f3b9c9f0b 80 #endif