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/BusIn.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_BUSIN_H
yihui 5:b8c02645e6af 17 #define MBED_BUSIN_H
yihui 5:b8c02645e6af 18
yihui 5:b8c02645e6af 19 #include "platform.h"
yihui 5:b8c02645e6af 20 #include "DigitalIn.h"
yihui 5:b8c02645e6af 21
yihui 5:b8c02645e6af 22 namespace mbed {
yihui 5:b8c02645e6af 23
yihui 5:b8c02645e6af 24 /** A digital input bus, used for reading the state of a collection of pins
yihui 5:b8c02645e6af 25 */
yihui 5:b8c02645e6af 26 class BusIn {
yihui 5:b8c02645e6af 27
yihui 5:b8c02645e6af 28 public:
yihui 5:b8c02645e6af 29 /* Group: Configuration Methods */
yihui 5:b8c02645e6af 30
yihui 5:b8c02645e6af 31 /** Create an BusIn, connected to the specified pins
yihui 5:b8c02645e6af 32 *
yihui 5:b8c02645e6af 33 * @param <n> DigitalIn pin to connect to bus bit <n> (p5-p30, NC)
yihui 5:b8c02645e6af 34 *
yihui 5:b8c02645e6af 35 * @note
yihui 5:b8c02645e6af 36 * It is only required to specify as many pin variables as is required
yihui 5:b8c02645e6af 37 * for the bus; the rest will default to NC (not connected)
yihui 5:b8c02645e6af 38 */
yihui 5:b8c02645e6af 39 BusIn(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
yihui 5:b8c02645e6af 40 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
yihui 5:b8c02645e6af 41 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
yihui 5:b8c02645e6af 42 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
yihui 5:b8c02645e6af 43
yihui 5:b8c02645e6af 44 BusIn(PinName pins[16]);
yihui 5:b8c02645e6af 45
yihui 5:b8c02645e6af 46 virtual ~BusIn();
yihui 5:b8c02645e6af 47
yihui 5:b8c02645e6af 48 /** Read the value of the input bus
yihui 5:b8c02645e6af 49 *
yihui 5:b8c02645e6af 50 * @returns
yihui 5:b8c02645e6af 51 * An integer with each bit corresponding to the value read from the associated DigitalIn pin
yihui 5:b8c02645e6af 52 */
yihui 5:b8c02645e6af 53 int read();
yihui 5:b8c02645e6af 54
yihui 5:b8c02645e6af 55 /** Set the input pin mode
yihui 5:b8c02645e6af 56 *
yihui 5:b8c02645e6af 57 * @param mode PullUp, PullDown, PullNone
yihui 5:b8c02645e6af 58 */
yihui 5:b8c02645e6af 59 void mode(PinMode pull);
yihui 5:b8c02645e6af 60
yihui 5:b8c02645e6af 61 /** Binary mask of bus pins connected to actual pins (not NC pins)
yihui 5:b8c02645e6af 62 * 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 63 *
yihui 5:b8c02645e6af 64 * @returns
yihui 5:b8c02645e6af 65 * Binary mask of connected pins
yihui 5:b8c02645e6af 66 */
yihui 5:b8c02645e6af 67 int mask() {
yihui 5:b8c02645e6af 68 return _nc_mask;
yihui 5:b8c02645e6af 69 }
yihui 5:b8c02645e6af 70
yihui 5:b8c02645e6af 71 #ifdef MBED_OPERATORS
yihui 5:b8c02645e6af 72 /** A shorthand for read()
yihui 5:b8c02645e6af 73 */
yihui 5:b8c02645e6af 74 operator int();
yihui 5:b8c02645e6af 75
yihui 5:b8c02645e6af 76 /** Access to particular bit in random-iterator fashion
yihui 5:b8c02645e6af 77 */
yihui 5:b8c02645e6af 78 DigitalIn & operator[] (int index);
yihui 5:b8c02645e6af 79 #endif
yihui 5:b8c02645e6af 80
yihui 5:b8c02645e6af 81 protected:
yihui 5:b8c02645e6af 82 DigitalIn* _pin[16];
yihui 5:b8c02645e6af 83
yihui 5:b8c02645e6af 84 /** Mask of bus's NC pins
yihui 5:b8c02645e6af 85 * If bit[n] is set to 1 - pin is connected
yihui 5:b8c02645e6af 86 * if bit[n] is cleared - pin is not connected (NC)
yihui 5:b8c02645e6af 87 */
yihui 5:b8c02645e6af 88 int _nc_mask;
yihui 5:b8c02645e6af 89
yihui 5:b8c02645e6af 90 /* disallow copy constructor and assignment operators */
yihui 5:b8c02645e6af 91 private:
yihui 5:b8c02645e6af 92 BusIn(const BusIn&);
yihui 5:b8c02645e6af 93 BusIn & operator = (const BusIn&);
yihui 5:b8c02645e6af 94 };
yihui 5:b8c02645e6af 95
yihui 5:b8c02645e6af 96 } // namespace mbed
yihui 5:b8c02645e6af 97
yihui 5:b8c02645e6af 98 #endif