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/DigitalInOut.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_DIGITALINOUT_H
yihui 5:b8c02645e6af 17 #define MBED_DIGITALINOUT_H
yihui 5:b8c02645e6af 18
yihui 5:b8c02645e6af 19 #include "platform.h"
yihui 5:b8c02645e6af 20
yihui 5:b8c02645e6af 21 #include "gpio_api.h"
yihui 5:b8c02645e6af 22
yihui 5:b8c02645e6af 23 namespace mbed {
yihui 5:b8c02645e6af 24
yihui 5:b8c02645e6af 25 /** A digital input/output, used for setting or reading a bi-directional pin
yihui 5:b8c02645e6af 26 */
yihui 5:b8c02645e6af 27 class DigitalInOut {
yihui 5:b8c02645e6af 28
yihui 5:b8c02645e6af 29 public:
yihui 5:b8c02645e6af 30 /** Create a DigitalInOut connected to the specified pin
yihui 5:b8c02645e6af 31 *
yihui 5:b8c02645e6af 32 * @param pin DigitalInOut pin to connect to
yihui 5:b8c02645e6af 33 */
yihui 5:b8c02645e6af 34 DigitalInOut(PinName pin) : gpio() {
yihui 5:b8c02645e6af 35 gpio_init_in(&gpio, pin);
yihui 5:b8c02645e6af 36 }
yihui 5:b8c02645e6af 37
yihui 5:b8c02645e6af 38 /** Create a DigitalInOut connected to the specified pin
yihui 5:b8c02645e6af 39 *
yihui 5:b8c02645e6af 40 * @param pin DigitalInOut pin to connect to
yihui 5:b8c02645e6af 41 * @param direction the initial direction of the pin
yihui 5:b8c02645e6af 42 * @param mode the initial mode of the pin
yihui 5:b8c02645e6af 43 * @param value the initial value of the pin if is an output
yihui 5:b8c02645e6af 44 */
yihui 5:b8c02645e6af 45 DigitalInOut(PinName pin, PinDirection direction, PinMode mode, int value) : gpio() {
yihui 5:b8c02645e6af 46 gpio_init_inout(&gpio, pin, direction, mode, value);
yihui 5:b8c02645e6af 47 }
yihui 5:b8c02645e6af 48
yihui 5:b8c02645e6af 49 /** Set the output, specified as 0 or 1 (int)
yihui 5:b8c02645e6af 50 *
yihui 5:b8c02645e6af 51 * @param value An integer specifying the pin output value,
yihui 5:b8c02645e6af 52 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
yihui 5:b8c02645e6af 53 */
yihui 5:b8c02645e6af 54 void write(int value) {
yihui 5:b8c02645e6af 55 gpio_write(&gpio, value);
yihui 5:b8c02645e6af 56 }
yihui 5:b8c02645e6af 57
yihui 5:b8c02645e6af 58 /** Return the output setting, represented as 0 or 1 (int)
yihui 5:b8c02645e6af 59 *
yihui 5:b8c02645e6af 60 * @returns
yihui 5:b8c02645e6af 61 * an integer representing the output setting of the pin if it is an output,
yihui 5:b8c02645e6af 62 * or read the input if set as an input
yihui 5:b8c02645e6af 63 */
yihui 5:b8c02645e6af 64 int read() {
yihui 5:b8c02645e6af 65 return gpio_read(&gpio);
yihui 5:b8c02645e6af 66 }
yihui 5:b8c02645e6af 67
yihui 5:b8c02645e6af 68 /** Set as an output
yihui 5:b8c02645e6af 69 */
yihui 5:b8c02645e6af 70 void output() {
yihui 5:b8c02645e6af 71 gpio_dir(&gpio, PIN_OUTPUT);
yihui 5:b8c02645e6af 72 }
yihui 5:b8c02645e6af 73
yihui 5:b8c02645e6af 74 /** Set as an input
yihui 5:b8c02645e6af 75 */
yihui 5:b8c02645e6af 76 void input() {
yihui 5:b8c02645e6af 77 gpio_dir(&gpio, PIN_INPUT);
yihui 5:b8c02645e6af 78 }
yihui 5:b8c02645e6af 79
yihui 5:b8c02645e6af 80 /** Set the input pin mode
yihui 5:b8c02645e6af 81 *
yihui 5:b8c02645e6af 82 * @param mode PullUp, PullDown, PullNone, OpenDrain
yihui 5:b8c02645e6af 83 */
yihui 5:b8c02645e6af 84 void mode(PinMode pull) {
yihui 5:b8c02645e6af 85 gpio_mode(&gpio, pull);
yihui 5:b8c02645e6af 86 }
yihui 5:b8c02645e6af 87
yihui 5:b8c02645e6af 88 /** Return the output setting, represented as 0 or 1 (int)
yihui 5:b8c02645e6af 89 *
yihui 5:b8c02645e6af 90 * @returns
yihui 5:b8c02645e6af 91 * Non zero value if pin is connected to uc GPIO
yihui 5:b8c02645e6af 92 * 0 if gpio object was initialized with NC
yihui 5:b8c02645e6af 93 */
yihui 5:b8c02645e6af 94 int is_connected() {
yihui 5:b8c02645e6af 95 return gpio_is_connected(&gpio);
yihui 5:b8c02645e6af 96 }
yihui 5:b8c02645e6af 97
yihui 5:b8c02645e6af 98 #ifdef MBED_OPERATORS
yihui 5:b8c02645e6af 99 /** A shorthand for write()
yihui 5:b8c02645e6af 100 */
yihui 5:b8c02645e6af 101 DigitalInOut& operator= (int value) {
yihui 5:b8c02645e6af 102 write(value);
yihui 5:b8c02645e6af 103 return *this;
yihui 5:b8c02645e6af 104 }
yihui 5:b8c02645e6af 105
yihui 5:b8c02645e6af 106 DigitalInOut& operator= (DigitalInOut& rhs) {
yihui 5:b8c02645e6af 107 write(rhs.read());
yihui 5:b8c02645e6af 108 return *this;
yihui 5:b8c02645e6af 109 }
yihui 5:b8c02645e6af 110
yihui 5:b8c02645e6af 111 /** A shorthand for read()
yihui 5:b8c02645e6af 112 */
yihui 5:b8c02645e6af 113 operator int() {
yihui 5:b8c02645e6af 114 return read();
yihui 5:b8c02645e6af 115 }
yihui 5:b8c02645e6af 116 #endif
yihui 5:b8c02645e6af 117
yihui 5:b8c02645e6af 118 protected:
yihui 5:b8c02645e6af 119 gpio_t gpio;
yihui 5:b8c02645e6af 120 };
yihui 5:b8c02645e6af 121
yihui 5:b8c02645e6af 122 } // namespace mbed
yihui 5:b8c02645e6af 123
yihui 5:b8c02645e6af 124 #endif