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/DigitalOut.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_DIGITALOUT_H
yihui 5:b8c02645e6af 17 #define MBED_DIGITALOUT_H
yihui 5:b8c02645e6af 18
yihui 5:b8c02645e6af 19 #include "platform.h"
yihui 5:b8c02645e6af 20 #include "gpio_api.h"
yihui 5:b8c02645e6af 21
yihui 5:b8c02645e6af 22 namespace mbed {
yihui 5:b8c02645e6af 23
yihui 5:b8c02645e6af 24 /** A digital output, used for setting the state of a pin
yihui 5:b8c02645e6af 25 *
yihui 5:b8c02645e6af 26 * Example:
yihui 5:b8c02645e6af 27 * @code
yihui 5:b8c02645e6af 28 * // Toggle a LED
yihui 5:b8c02645e6af 29 * #include "mbed.h"
yihui 5:b8c02645e6af 30 *
yihui 5:b8c02645e6af 31 * DigitalOut led(LED1);
yihui 5:b8c02645e6af 32 *
yihui 5:b8c02645e6af 33 * int main() {
yihui 5:b8c02645e6af 34 * while(1) {
yihui 5:b8c02645e6af 35 * led = !led;
yihui 5:b8c02645e6af 36 * wait(0.2);
yihui 5:b8c02645e6af 37 * }
yihui 5:b8c02645e6af 38 * }
yihui 5:b8c02645e6af 39 * @endcode
yihui 5:b8c02645e6af 40 */
yihui 5:b8c02645e6af 41 class DigitalOut {
yihui 5:b8c02645e6af 42
yihui 5:b8c02645e6af 43 public:
yihui 5:b8c02645e6af 44 /** Create a DigitalOut connected to the specified pin
yihui 5:b8c02645e6af 45 *
yihui 5:b8c02645e6af 46 * @param pin DigitalOut pin to connect to
yihui 5:b8c02645e6af 47 */
yihui 5:b8c02645e6af 48 DigitalOut(PinName pin) : gpio() {
yihui 5:b8c02645e6af 49 gpio_init_out(&gpio, pin);
yihui 5:b8c02645e6af 50 }
yihui 5:b8c02645e6af 51
yihui 5:b8c02645e6af 52 /** Create a DigitalOut connected to the specified pin
yihui 5:b8c02645e6af 53 *
yihui 5:b8c02645e6af 54 * @param pin DigitalOut pin to connect to
yihui 5:b8c02645e6af 55 * @param value the initial pin value
yihui 5:b8c02645e6af 56 */
yihui 5:b8c02645e6af 57 DigitalOut(PinName pin, int value) : gpio() {
yihui 5:b8c02645e6af 58 gpio_init_out_ex(&gpio, pin, value);
yihui 5:b8c02645e6af 59 }
yihui 5:b8c02645e6af 60
yihui 5:b8c02645e6af 61 /** Set the output, specified as 0 or 1 (int)
yihui 5:b8c02645e6af 62 *
yihui 5:b8c02645e6af 63 * @param value An integer specifying the pin output value,
yihui 5:b8c02645e6af 64 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
yihui 5:b8c02645e6af 65 */
yihui 5:b8c02645e6af 66 void write(int value) {
yihui 5:b8c02645e6af 67 gpio_write(&gpio, value);
yihui 5:b8c02645e6af 68 }
yihui 5:b8c02645e6af 69
yihui 5:b8c02645e6af 70 /** Return the output setting, represented as 0 or 1 (int)
yihui 5:b8c02645e6af 71 *
yihui 5:b8c02645e6af 72 * @returns
yihui 5:b8c02645e6af 73 * an integer representing the output setting of the pin,
yihui 5:b8c02645e6af 74 * 0 for logical 0, 1 for logical 1
yihui 5:b8c02645e6af 75 */
yihui 5:b8c02645e6af 76 int read() {
yihui 5:b8c02645e6af 77 return gpio_read(&gpio);
yihui 5:b8c02645e6af 78 }
yihui 5:b8c02645e6af 79
yihui 5:b8c02645e6af 80 /** Return the output setting, represented as 0 or 1 (int)
yihui 5:b8c02645e6af 81 *
yihui 5:b8c02645e6af 82 * @returns
yihui 5:b8c02645e6af 83 * Non zero value if pin is connected to uc GPIO
yihui 5:b8c02645e6af 84 * 0 if gpio object was initialized with NC
yihui 5:b8c02645e6af 85 */
yihui 5:b8c02645e6af 86 int is_connected() {
yihui 5:b8c02645e6af 87 return gpio_is_connected(&gpio);
yihui 5:b8c02645e6af 88 }
yihui 5:b8c02645e6af 89
yihui 5:b8c02645e6af 90 #ifdef MBED_OPERATORS
yihui 5:b8c02645e6af 91 /** A shorthand for write()
yihui 5:b8c02645e6af 92 */
yihui 5:b8c02645e6af 93 DigitalOut& operator= (int value) {
yihui 5:b8c02645e6af 94 write(value);
yihui 5:b8c02645e6af 95 return *this;
yihui 5:b8c02645e6af 96 }
yihui 5:b8c02645e6af 97
yihui 5:b8c02645e6af 98 DigitalOut& operator= (DigitalOut& rhs) {
yihui 5:b8c02645e6af 99 write(rhs.read());
yihui 5:b8c02645e6af 100 return *this;
yihui 5:b8c02645e6af 101 }
yihui 5:b8c02645e6af 102
yihui 5:b8c02645e6af 103 /** A shorthand for read()
yihui 5:b8c02645e6af 104 */
yihui 5:b8c02645e6af 105 operator int() {
yihui 5:b8c02645e6af 106 return read();
yihui 5:b8c02645e6af 107 }
yihui 5:b8c02645e6af 108 #endif
yihui 5:b8c02645e6af 109
yihui 5:b8c02645e6af 110 protected:
yihui 5:b8c02645e6af 111 gpio_t gpio;
yihui 5:b8c02645e6af 112 };
yihui 5:b8c02645e6af 113
yihui 5:b8c02645e6af 114 } // namespace mbed
yihui 5:b8c02645e6af 115
yihui 5:b8c02645e6af 116 #endif