Yihui Xiong / nrf51822_fix_i2c_spi_conflict

fix nrf51822 i2c & spi conflict

Dependencies:   BLE_API eMPL_MPU6050 nRF51822

Fork of Seeed_Tiny_BLE_Flash by Darren Huang

mbed-src/api/BusOut.h@5:b8c02645e6af, 2015-11-17 (annotated)

Committer:
yihui
Date:
Tue Nov 17 07:48:56 2015 +0000
Revision:
5:b8c02645e6af
fix i2c & spi conflict

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yihui 5:b8c02645e6af 1 /* mbed Microcontroller Library
yihui 5:b8c02645e6af 2 * Copyright (c) 2006-2013 ARM Limited
yihui 5:b8c02645e6af 3 *
yihui 5:b8c02645e6af 4 * Licensed under the Apache License, Version 2.0 (the "License");
yihui 5:b8c02645e6af 5 * you may not use this file except in compliance with the License.
yihui 5:b8c02645e6af 6 * You may obtain a copy of the License at
yihui 5:b8c02645e6af 7 *
yihui 5:b8c02645e6af 8 * http://www.apache.org/licenses/LICENSE-2.0
yihui 5:b8c02645e6af 9 *
yihui 5:b8c02645e6af 10 * Unless required by applicable law or agreed to in writing, software
yihui 5:b8c02645e6af 11 * distributed under the License is distributed on an "AS IS" BASIS,
yihui 5:b8c02645e6af 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
yihui 5:b8c02645e6af 13 * See the License for the specific language governing permissions and
yihui 5:b8c02645e6af 14 * limitations under the License.
yihui 5:b8c02645e6af 15 */
yihui 5:b8c02645e6af 16 #ifndef MBED_BUSOUT_H
yihui 5:b8c02645e6af 17 #define MBED_BUSOUT_H
yihui 5:b8c02645e6af 18
yihui 5:b8c02645e6af 19 #include "DigitalOut.h"
yihui 5:b8c02645e6af 20
yihui 5:b8c02645e6af 21 namespace mbed {
yihui 5:b8c02645e6af 22
yihui 5:b8c02645e6af 23 /** A digital output bus, used for setting the state of a collection of pins
yihui 5:b8c02645e6af 24 */
yihui 5:b8c02645e6af 25 class BusOut {
yihui 5:b8c02645e6af 26
yihui 5:b8c02645e6af 27 public:
yihui 5:b8c02645e6af 28
yihui 5:b8c02645e6af 29 /** Create an BusOut, connected to the specified pins
yihui 5:b8c02645e6af 30 *
yihui 5:b8c02645e6af 31 * @param p<n> DigitalOut pin to connect to bus bit <n> (p5-p30, NC)
yihui 5:b8c02645e6af 32 *
yihui 5:b8c02645e6af 33 * @note
yihui 5:b8c02645e6af 34 * It is only required to specify as many pin variables as is required
yihui 5:b8c02645e6af 35 * for the bus; the rest will default to NC (not connected)
yihui 5:b8c02645e6af 36 */
yihui 5:b8c02645e6af 37 BusOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
yihui 5:b8c02645e6af 38 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
yihui 5:b8c02645e6af 39 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
yihui 5:b8c02645e6af 40 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
yihui 5:b8c02645e6af 41
yihui 5:b8c02645e6af 42 BusOut(PinName pins[16]);
yihui 5:b8c02645e6af 43
yihui 5:b8c02645e6af 44 virtual ~BusOut();
yihui 5:b8c02645e6af 45
yihui 5:b8c02645e6af 46 /** Write the value to the output bus
yihui 5:b8c02645e6af 47 *
yihui 5:b8c02645e6af 48 * @param value An integer specifying a bit to write for every corresponding DigitalOut pin
yihui 5:b8c02645e6af 49 */
yihui 5:b8c02645e6af 50 void write(int value);
yihui 5:b8c02645e6af 51
yihui 5:b8c02645e6af 52 /** Read the value currently output on the bus
yihui 5:b8c02645e6af 53 *
yihui 5:b8c02645e6af 54 * @returns
yihui 5:b8c02645e6af 55 * An integer with each bit corresponding to associated DigitalOut pin setting
yihui 5:b8c02645e6af 56 */
yihui 5:b8c02645e6af 57 int read();
yihui 5:b8c02645e6af 58
yihui 5:b8c02645e6af 59 /** Binary mask of bus pins connected to actual pins (not NC pins)
yihui 5:b8c02645e6af 60 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
yihui 5:b8c02645e6af 61 *
yihui 5:b8c02645e6af 62 * @returns
yihui 5:b8c02645e6af 63 * Binary mask of connected pins
yihui 5:b8c02645e6af 64 */
yihui 5:b8c02645e6af 65 int mask() {
yihui 5:b8c02645e6af 66 return _nc_mask;
yihui 5:b8c02645e6af 67 }
yihui 5:b8c02645e6af 68
yihui 5:b8c02645e6af 69 #ifdef MBED_OPERATORS
yihui 5:b8c02645e6af 70 /** A shorthand for write()
yihui 5:b8c02645e6af 71 */
yihui 5:b8c02645e6af 72 BusOut& operator= (int v);
yihui 5:b8c02645e6af 73 BusOut& operator= (BusOut& rhs);
yihui 5:b8c02645e6af 74
yihui 5:b8c02645e6af 75 /** Access to particular bit in random-iterator fashion
yihui 5:b8c02645e6af 76 */
yihui 5:b8c02645e6af 77 DigitalOut& operator[] (int index);
yihui 5:b8c02645e6af 78
yihui 5:b8c02645e6af 79 /** A shorthand for read()
yihui 5:b8c02645e6af 80 */
yihui 5:b8c02645e6af 81 operator int();
yihui 5:b8c02645e6af 82 #endif
yihui 5:b8c02645e6af 83
yihui 5:b8c02645e6af 84 protected:
yihui 5:b8c02645e6af 85 DigitalOut* _pin[16];
yihui 5:b8c02645e6af 86
yihui 5:b8c02645e6af 87 /** Mask of bus's NC pins
yihui 5:b8c02645e6af 88 * If bit[n] is set to 1 - pin is connected
yihui 5:b8c02645e6af 89 * if bit[n] is cleared - pin is not connected (NC)
yihui 5:b8c02645e6af 90 */
yihui 5:b8c02645e6af 91 int _nc_mask;
yihui 5:b8c02645e6af 92
yihui 5:b8c02645e6af 93 /* disallow copy constructor and assignment operators */
yihui 5:b8c02645e6af 94 private:
yihui 5:b8c02645e6af 95 BusOut(const BusOut&);
yihui 5:b8c02645e6af 96 BusOut & operator = (const BusOut&);
yihui 5:b8c02645e6af 97 };
yihui 5:b8c02645e6af 98
yihui 5:b8c02645e6af 99 } // namespace mbed
yihui 5:b8c02645e6af 100
yihui 5:b8c02645e6af 101 #endif