Zeroday Hong / mbed-dev

mbed library sources. Supersedes mbed-src.

Fork of mbed-dev by mbed official

api/BusOut.h@130:cd421b1c9b67, 2016-05-17 (annotated)

Committer:
mbed_official
Date:
Tue May 17 12:45:11 2016 +0100
Revision:
130:cd421b1c9b67
Parent:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Synchronized with git revision 909c76f36c371b38afc09b65949ed944189bb90a



Full URL: https://github.com/mbedmicro/mbed/commit/909c76f36c371b38afc09b65949ed944189bb90a/



we changed the sequence of ROM section to "<ro code> <ro data>" when compiled with the IAR.



When the ROM area is large, PC could not jump properly in the program area.

The other development environment of this sequence ("ro code, ro data").

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #ifndef MBED_BUSOUT_H
bogdanm 0:9b334a45a8ff 17 #define MBED_BUSOUT_H
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 #include "DigitalOut.h"
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 namespace mbed {
bogdanm 0:9b334a45a8ff 22
bogdanm 0:9b334a45a8ff 23 /** A digital output bus, used for setting the state of a collection of pins
bogdanm 0:9b334a45a8ff 24 */
bogdanm 0:9b334a45a8ff 25 class BusOut {
bogdanm 0:9b334a45a8ff 26
bogdanm 0:9b334a45a8ff 27 public:
bogdanm 0:9b334a45a8ff 28
bogdanm 0:9b334a45a8ff 29 /** Create an BusOut, connected to the specified pins
bogdanm 0:9b334a45a8ff 30 *
bogdanm 0:9b334a45a8ff 31 * @param p<n> DigitalOut pin to connect to bus bit <n> (p5-p30, NC)
bogdanm 0:9b334a45a8ff 32 *
bogdanm 0:9b334a45a8ff 33 * @note
bogdanm 0:9b334a45a8ff 34 * It is only required to specify as many pin variables as is required
bogdanm 0:9b334a45a8ff 35 * for the bus; the rest will default to NC (not connected)
bogdanm 0:9b334a45a8ff 36 */
bogdanm 0:9b334a45a8ff 37 BusOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
bogdanm 0:9b334a45a8ff 38 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
bogdanm 0:9b334a45a8ff 39 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
bogdanm 0:9b334a45a8ff 40 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 BusOut(PinName pins[16]);
bogdanm 0:9b334a45a8ff 43
bogdanm 0:9b334a45a8ff 44 virtual ~BusOut();
bogdanm 0:9b334a45a8ff 45
bogdanm 0:9b334a45a8ff 46 /** Write the value to the output bus
bogdanm 0:9b334a45a8ff 47 *
bogdanm 0:9b334a45a8ff 48 * @param value An integer specifying a bit to write for every corresponding DigitalOut pin
bogdanm 0:9b334a45a8ff 49 */
bogdanm 0:9b334a45a8ff 50 void write(int value);
bogdanm 0:9b334a45a8ff 51
bogdanm 0:9b334a45a8ff 52 /** Read the value currently output on the bus
bogdanm 0:9b334a45a8ff 53 *
bogdanm 0:9b334a45a8ff 54 * @returns
bogdanm 0:9b334a45a8ff 55 * An integer with each bit corresponding to associated DigitalOut pin setting
bogdanm 0:9b334a45a8ff 56 */
bogdanm 0:9b334a45a8ff 57 int read();
bogdanm 0:9b334a45a8ff 58
bogdanm 0:9b334a45a8ff 59 /** Binary mask of bus pins connected to actual pins (not NC pins)
bogdanm 0:9b334a45a8ff 60 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
bogdanm 0:9b334a45a8ff 61 *
bogdanm 0:9b334a45a8ff 62 * @returns
bogdanm 0:9b334a45a8ff 63 * Binary mask of connected pins
bogdanm 0:9b334a45a8ff 64 */
bogdanm 0:9b334a45a8ff 65 int mask() {
bogdanm 0:9b334a45a8ff 66 return _nc_mask;
bogdanm 0:9b334a45a8ff 67 }
bogdanm 0:9b334a45a8ff 68
bogdanm 0:9b334a45a8ff 69 #ifdef MBED_OPERATORS
bogdanm 0:9b334a45a8ff 70 /** A shorthand for write()
bogdanm 0:9b334a45a8ff 71 */
bogdanm 0:9b334a45a8ff 72 BusOut& operator= (int v);
bogdanm 0:9b334a45a8ff 73 BusOut& operator= (BusOut& rhs);
bogdanm 0:9b334a45a8ff 74
bogdanm 0:9b334a45a8ff 75 /** Access to particular bit in random-iterator fashion
bogdanm 0:9b334a45a8ff 76 */
bogdanm 0:9b334a45a8ff 77 DigitalOut& operator[] (int index);
bogdanm 0:9b334a45a8ff 78
bogdanm 0:9b334a45a8ff 79 /** A shorthand for read()
bogdanm 0:9b334a45a8ff 80 */
bogdanm 0:9b334a45a8ff 81 operator int();
bogdanm 0:9b334a45a8ff 82 #endif
bogdanm 0:9b334a45a8ff 83
bogdanm 0:9b334a45a8ff 84 protected:
bogdanm 0:9b334a45a8ff 85 DigitalOut* _pin[16];
bogdanm 0:9b334a45a8ff 86
bogdanm 0:9b334a45a8ff 87 /** Mask of bus's NC pins
bogdanm 0:9b334a45a8ff 88 * If bit[n] is set to 1 - pin is connected
bogdanm 0:9b334a45a8ff 89 * if bit[n] is cleared - pin is not connected (NC)
bogdanm 0:9b334a45a8ff 90 */
bogdanm 0:9b334a45a8ff 91 int _nc_mask;
bogdanm 0:9b334a45a8ff 92
bogdanm 0:9b334a45a8ff 93 /* disallow copy constructor and assignment operators */
bogdanm 0:9b334a45a8ff 94 private:
bogdanm 0:9b334a45a8ff 95 BusOut(const BusOut&);
bogdanm 0:9b334a45a8ff 96 BusOut & operator = (const BusOut&);
bogdanm 0:9b334a45a8ff 97 };
bogdanm 0:9b334a45a8ff 98
bogdanm 0:9b334a45a8ff 99 } // namespace mbed
bogdanm 0:9b334a45a8ff 100
bogdanm 0:9b334a45a8ff 101 #endif