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/DigitalIn.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_DIGITALIN_H
yihui 5:b8c02645e6af 17 #define MBED_DIGITALIN_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, used for reading the state of a pin
yihui 5:b8c02645e6af 26 *
yihui 5:b8c02645e6af 27 * Example:
yihui 5:b8c02645e6af 28 * @code
yihui 5:b8c02645e6af 29 * // Flash an LED while a DigitalIn is true
yihui 5:b8c02645e6af 30 *
yihui 5:b8c02645e6af 31 * #include "mbed.h"
yihui 5:b8c02645e6af 32 *
yihui 5:b8c02645e6af 33 * DigitalIn enable(p5);
yihui 5:b8c02645e6af 34 * DigitalOut led(LED1);
yihui 5:b8c02645e6af 35 *
yihui 5:b8c02645e6af 36 * int main() {
yihui 5:b8c02645e6af 37 * while(1) {
yihui 5:b8c02645e6af 38 * if(enable) {
yihui 5:b8c02645e6af 39 * led = !led;
yihui 5:b8c02645e6af 40 * }
yihui 5:b8c02645e6af 41 * wait(0.25);
yihui 5:b8c02645e6af 42 * }
yihui 5:b8c02645e6af 43 * }
yihui 5:b8c02645e6af 44 * @endcode
yihui 5:b8c02645e6af 45 */
yihui 5:b8c02645e6af 46 class DigitalIn {
yihui 5:b8c02645e6af 47
yihui 5:b8c02645e6af 48 public:
yihui 5:b8c02645e6af 49 /** Create a DigitalIn connected to the specified pin
yihui 5:b8c02645e6af 50 *
yihui 5:b8c02645e6af 51 * @param pin DigitalIn pin to connect to
yihui 5:b8c02645e6af 52 */
yihui 5:b8c02645e6af 53 DigitalIn(PinName pin) : gpio() {
yihui 5:b8c02645e6af 54 gpio_init_in(&gpio, pin);
yihui 5:b8c02645e6af 55 }
yihui 5:b8c02645e6af 56
yihui 5:b8c02645e6af 57 /** Create a DigitalIn connected to the specified pin
yihui 5:b8c02645e6af 58 *
yihui 5:b8c02645e6af 59 * @param pin DigitalIn pin to connect to
yihui 5:b8c02645e6af 60 * @param mode the initial mode of the pin
yihui 5:b8c02645e6af 61 */
yihui 5:b8c02645e6af 62 DigitalIn(PinName pin, PinMode mode) : gpio() {
yihui 5:b8c02645e6af 63 gpio_init_in_ex(&gpio, pin, mode);
yihui 5:b8c02645e6af 64 }
yihui 5:b8c02645e6af 65 /** Read the input, represented as 0 or 1 (int)
yihui 5:b8c02645e6af 66 *
yihui 5:b8c02645e6af 67 * @returns
yihui 5:b8c02645e6af 68 * An integer representing the state of the input pin,
yihui 5:b8c02645e6af 69 * 0 for logical 0, 1 for logical 1
yihui 5:b8c02645e6af 70 */
yihui 5:b8c02645e6af 71 int read() {
yihui 5:b8c02645e6af 72 return gpio_read(&gpio);
yihui 5:b8c02645e6af 73 }
yihui 5:b8c02645e6af 74
yihui 5:b8c02645e6af 75 /** Set the input pin mode
yihui 5:b8c02645e6af 76 *
yihui 5:b8c02645e6af 77 * @param mode PullUp, PullDown, PullNone, OpenDrain
yihui 5:b8c02645e6af 78 */
yihui 5:b8c02645e6af 79 void mode(PinMode pull) {
yihui 5:b8c02645e6af 80 gpio_mode(&gpio, pull);
yihui 5:b8c02645e6af 81 }
yihui 5:b8c02645e6af 82
yihui 5:b8c02645e6af 83 /** Return the output setting, represented as 0 or 1 (int)
yihui 5:b8c02645e6af 84 *
yihui 5:b8c02645e6af 85 * @returns
yihui 5:b8c02645e6af 86 * Non zero value if pin is connected to uc GPIO
yihui 5:b8c02645e6af 87 * 0 if gpio object was initialized with NC
yihui 5:b8c02645e6af 88 */
yihui 5:b8c02645e6af 89 int is_connected() {
yihui 5:b8c02645e6af 90 return gpio_is_connected(&gpio);
yihui 5:b8c02645e6af 91 }
yihui 5:b8c02645e6af 92
yihui 5:b8c02645e6af 93 #ifdef MBED_OPERATORS
yihui 5:b8c02645e6af 94 /** An operator shorthand for read()
yihui 5:b8c02645e6af 95 */
yihui 5:b8c02645e6af 96 operator int() {
yihui 5:b8c02645e6af 97 return read();
yihui 5:b8c02645e6af 98 }
yihui 5:b8c02645e6af 99 #endif
yihui 5:b8c02645e6af 100
yihui 5:b8c02645e6af 101 protected:
yihui 5:b8c02645e6af 102 gpio_t gpio;
yihui 5:b8c02645e6af 103 };
yihui 5:b8c02645e6af 104
yihui 5:b8c02645e6af 105 } // namespace mbed
yihui 5:b8c02645e6af 106
yihui 5:b8c02645e6af 107 #endif