Aravind Vadali / mbed-src-AV

mbed.h library with any bug fixes AV finds.

Dependents:   micromouse4_encoder_testing PID_Test Lab1_Test WorkingPID ... more

api/BusOut.h@1:ebce2ad32f95, 2015-11-02 (annotated)

Committer:
aravindsv
Date:
Mon Nov 02 03:07:12 2015 +0000
Revision:
1:ebce2ad32f95
Parent:
0:ba7650f404af 
Changed the RCC timeout value to 500 ms, so total code startup time before program starts running is ~1s. Hopefully no side-effects from lower startup timeouts

Who changed what in which revision?

UserRevisionLine numberNew contents of line
aravindsv 0:ba7650f404af 1 /* mbed Microcontroller Library
aravindsv 0:ba7650f404af 2 * Copyright (c) 2006-2013 ARM Limited
aravindsv 0:ba7650f404af 3 *
aravindsv 0:ba7650f404af 4 * Licensed under the Apache License, Version 2.0 (the "License");
aravindsv 0:ba7650f404af 5 * you may not use this file except in compliance with the License.
aravindsv 0:ba7650f404af 6 * You may obtain a copy of the License at
aravindsv 0:ba7650f404af 7 *
aravindsv 0:ba7650f404af 8 * http://www.apache.org/licenses/LICENSE-2.0
aravindsv 0:ba7650f404af 9 *
aravindsv 0:ba7650f404af 10 * Unless required by applicable law or agreed to in writing, software
aravindsv 0:ba7650f404af 11 * distributed under the License is distributed on an "AS IS" BASIS,
aravindsv 0:ba7650f404af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
aravindsv 0:ba7650f404af 13 * See the License for the specific language governing permissions and
aravindsv 0:ba7650f404af 14 * limitations under the License.
aravindsv 0:ba7650f404af 15 */
aravindsv 0:ba7650f404af 16 #ifndef MBED_BUSOUT_H
aravindsv 0:ba7650f404af 17 #define MBED_BUSOUT_H
aravindsv 0:ba7650f404af 18
aravindsv 0:ba7650f404af 19 #include "DigitalOut.h"
aravindsv 0:ba7650f404af 20
aravindsv 0:ba7650f404af 21 namespace mbed {
aravindsv 0:ba7650f404af 22
aravindsv 0:ba7650f404af 23 /** A digital output bus, used for setting the state of a collection of pins
aravindsv 0:ba7650f404af 24 */
aravindsv 0:ba7650f404af 25 class BusOut {
aravindsv 0:ba7650f404af 26
aravindsv 0:ba7650f404af 27 public:
aravindsv 0:ba7650f404af 28
aravindsv 0:ba7650f404af 29 /** Create an BusOut, connected to the specified pins
aravindsv 0:ba7650f404af 30 *
aravindsv 0:ba7650f404af 31 * @param p<n> DigitalOut pin to connect to bus bit <n> (p5-p30, NC)
aravindsv 0:ba7650f404af 32 *
aravindsv 0:ba7650f404af 33 * @note
aravindsv 0:ba7650f404af 34 * It is only required to specify as many pin variables as is required
aravindsv 0:ba7650f404af 35 * for the bus; the rest will default to NC (not connected)
aravindsv 0:ba7650f404af 36 */
aravindsv 0:ba7650f404af 37 BusOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
aravindsv 0:ba7650f404af 38 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
aravindsv 0:ba7650f404af 39 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
aravindsv 0:ba7650f404af 40 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
aravindsv 0:ba7650f404af 41
aravindsv 0:ba7650f404af 42 BusOut(PinName pins[16]);
aravindsv 0:ba7650f404af 43
aravindsv 0:ba7650f404af 44 virtual ~BusOut();
aravindsv 0:ba7650f404af 45
aravindsv 0:ba7650f404af 46 /** Write the value to the output bus
aravindsv 0:ba7650f404af 47 *
aravindsv 0:ba7650f404af 48 * @param value An integer specifying a bit to write for every corresponding DigitalOut pin
aravindsv 0:ba7650f404af 49 */
aravindsv 0:ba7650f404af 50 void write(int value);
aravindsv 0:ba7650f404af 51
aravindsv 0:ba7650f404af 52 /** Read the value currently output on the bus
aravindsv 0:ba7650f404af 53 *
aravindsv 0:ba7650f404af 54 * @returns
aravindsv 0:ba7650f404af 55 * An integer with each bit corresponding to associated DigitalOut pin setting
aravindsv 0:ba7650f404af 56 */
aravindsv 0:ba7650f404af 57 int read();
aravindsv 0:ba7650f404af 58
aravindsv 0:ba7650f404af 59 /** Binary mask of bus pins connected to actual pins (not NC pins)
aravindsv 0:ba7650f404af 60 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
aravindsv 0:ba7650f404af 61 *
aravindsv 0:ba7650f404af 62 * @returns
aravindsv 0:ba7650f404af 63 * Binary mask of connected pins
aravindsv 0:ba7650f404af 64 */
aravindsv 0:ba7650f404af 65 int mask() {
aravindsv 0:ba7650f404af 66 return _nc_mask;
aravindsv 0:ba7650f404af 67 }
aravindsv 0:ba7650f404af 68
aravindsv 0:ba7650f404af 69 #ifdef MBED_OPERATORS
aravindsv 0:ba7650f404af 70 /** A shorthand for write()
aravindsv 0:ba7650f404af 71 */
aravindsv 0:ba7650f404af 72 BusOut& operator= (int v);
aravindsv 0:ba7650f404af 73 BusOut& operator= (BusOut& rhs);
aravindsv 0:ba7650f404af 74
aravindsv 0:ba7650f404af 75 /** Access to particular bit in random-iterator fashion
aravindsv 0:ba7650f404af 76 */
aravindsv 0:ba7650f404af 77 DigitalOut& operator[] (int index);
aravindsv 0:ba7650f404af 78
aravindsv 0:ba7650f404af 79 /** A shorthand for read()
aravindsv 0:ba7650f404af 80 */
aravindsv 0:ba7650f404af 81 operator int();
aravindsv 0:ba7650f404af 82 #endif
aravindsv 0:ba7650f404af 83
aravindsv 0:ba7650f404af 84 protected:
aravindsv 0:ba7650f404af 85 DigitalOut* _pin[16];
aravindsv 0:ba7650f404af 86
aravindsv 0:ba7650f404af 87 /** Mask of bus's NC pins
aravindsv 0:ba7650f404af 88 * If bit[n] is set to 1 - pin is connected
aravindsv 0:ba7650f404af 89 * if bit[n] is cleared - pin is not connected (NC)
aravindsv 0:ba7650f404af 90 */
aravindsv 0:ba7650f404af 91 int _nc_mask;
aravindsv 0:ba7650f404af 92
aravindsv 0:ba7650f404af 93 /* disallow copy constructor and assignment operators */
aravindsv 0:ba7650f404af 94 private:
aravindsv 0:ba7650f404af 95 BusOut(const BusOut&);
aravindsv 0:ba7650f404af 96 BusOut & operator = (const BusOut&);
aravindsv 0:ba7650f404af 97 };
aravindsv 0:ba7650f404af 98
aravindsv 0:ba7650f404af 99 } // namespace mbed
aravindsv 0:ba7650f404af 100
aravindsv 0:ba7650f404af 101 #endif