mbed official / mbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

drivers/BusInOut.h@134:ad3be0349dc5, 2017-01-16 (annotated)

Committer:
<>
Date:
Mon Jan 16 12:05:23 2017 +0000
Revision:
134:ad3be0349dc5
Parent:
128:9bcdf88f62b0
Child:
145:64910690c574
Release 134 of the mbed library



Ports for Upcoming Targets





Fixes and Changes



3488: Dev stm i2c v2 unitary functions https://github.com/ARMmbed/mbed-os/pull/3488

3492: Fix #3463 CAN read() return value https://github.com/ARMmbed/mbed-os/pull/3492

3503: [LPC15xx] Ensure that PWM=1 is resolved correctly https://github.com/ARMmbed/mbed-os/pull/3503

3504: [LPC15xx] CAN implementation improvements https://github.com/ARMmbed/mbed-os/pull/3504

3539: NUCLEO_F412ZG - Add support of TRNG peripheral https://github.com/ARMmbed/mbed-os/pull/3539

3540: STM: SPI: Initialize Rx in spi_master_write https://github.com/ARMmbed/mbed-os/pull/3540

3438: K64F: Add support for SERIAL ASYNCH API https://github.com/ARMmbed/mbed-os/pull/3438

3519: MCUXpresso: Fix ENET driver to enable interrupts after interrupt handler is set https://github.com/ARMmbed/mbed-os/pull/3519

3544: STM32L4 deepsleep improvement https://github.com/ARMmbed/mbed-os/pull/3544

3546: NUCLEO-F412ZG - Add CAN peripheral https://github.com/ARMmbed/mbed-os/pull/3546

3551: Fix I2C driver for RZ/A1H https://github.com/ARMmbed/mbed-os/pull/3551

3558: K64F UART Asynch API: Fix synchronization issue https://github.com/ARMmbed/mbed-os/pull/3558

3563: LPC4088 - Fix vector checksum https://github.com/ARMmbed/mbed-os/pull/3563

3567: Dev stm32 F0 v1.7.0 https://github.com/ARMmbed/mbed-os/pull/3567

3577: Fixes linking errors when building with debug profile https://github.com/ARMmbed/mbed-os/pull/3577

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 128:9bcdf88f62b0 1 /* mbed Microcontroller Library
<> 128:9bcdf88f62b0 2 * Copyright (c) 2006-2013 ARM Limited
<> 128:9bcdf88f62b0 3 *
<> 128:9bcdf88f62b0 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 128:9bcdf88f62b0 5 * you may not use this file except in compliance with the License.
<> 128:9bcdf88f62b0 6 * You may obtain a copy of the License at
<> 128:9bcdf88f62b0 7 *
<> 128:9bcdf88f62b0 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 128:9bcdf88f62b0 9 *
<> 128:9bcdf88f62b0 10 * Unless required by applicable law or agreed to in writing, software
<> 128:9bcdf88f62b0 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 128:9bcdf88f62b0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 128:9bcdf88f62b0 13 * See the License for the specific language governing permissions and
<> 128:9bcdf88f62b0 14 * limitations under the License.
<> 128:9bcdf88f62b0 15 */
<> 128:9bcdf88f62b0 16 #ifndef MBED_BUSINOUT_H
<> 128:9bcdf88f62b0 17 #define MBED_BUSINOUT_H
<> 128:9bcdf88f62b0 18
<> 128:9bcdf88f62b0 19 #include "drivers/DigitalInOut.h"
<> 128:9bcdf88f62b0 20 #include "platform/PlatformMutex.h"
<> 128:9bcdf88f62b0 21
<> 128:9bcdf88f62b0 22 namespace mbed {
<> 128:9bcdf88f62b0 23 /** \addtogroup drivers */
<> 128:9bcdf88f62b0 24 /** @{*/
<> 128:9bcdf88f62b0 25
<> 128:9bcdf88f62b0 26 /** A digital input output bus, used for setting the state of a collection of pins
<> 128:9bcdf88f62b0 27 *
<> 128:9bcdf88f62b0 28 * @Note Synchronization level: Thread safe
<> 128:9bcdf88f62b0 29 */
<> 128:9bcdf88f62b0 30 class BusInOut {
<> 128:9bcdf88f62b0 31
<> 128:9bcdf88f62b0 32 public:
<> 128:9bcdf88f62b0 33
<> 128:9bcdf88f62b0 34 /** Create an BusInOut, connected to the specified pins
<> 128:9bcdf88f62b0 35 *
<> 128:9bcdf88f62b0 36 * @param p<n> DigitalInOut pin to connect to bus bit p<n> (p5-p30, NC)
<> 128:9bcdf88f62b0 37 *
<> 128:9bcdf88f62b0 38 * @note
<> 128:9bcdf88f62b0 39 * It is only required to specify as many pin variables as is required
<> 128:9bcdf88f62b0 40 * for the bus; the rest will default to NC (not connected)
<> 128:9bcdf88f62b0 41 */
<> 128:9bcdf88f62b0 42 BusInOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
<> 128:9bcdf88f62b0 43 PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
<> 128:9bcdf88f62b0 44 PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
<> 128:9bcdf88f62b0 45 PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
<> 128:9bcdf88f62b0 46
<> 128:9bcdf88f62b0 47 BusInOut(PinName pins[16]);
<> 128:9bcdf88f62b0 48
<> 128:9bcdf88f62b0 49 virtual ~BusInOut();
<> 128:9bcdf88f62b0 50
<> 128:9bcdf88f62b0 51 /* Group: Access Methods */
<> 128:9bcdf88f62b0 52
<> 128:9bcdf88f62b0 53 /** Write the value to the output bus
<> 128:9bcdf88f62b0 54 *
<> 128:9bcdf88f62b0 55 * @param value An integer specifying a bit to write for every corresponding DigitalInOut pin
<> 128:9bcdf88f62b0 56 */
<> 128:9bcdf88f62b0 57 void write(int value);
<> 128:9bcdf88f62b0 58
<> 128:9bcdf88f62b0 59 /** Read the value currently output on the bus
<> 128:9bcdf88f62b0 60 *
<> 128:9bcdf88f62b0 61 * @returns
<> 128:9bcdf88f62b0 62 * An integer with each bit corresponding to associated DigitalInOut pin setting
<> 128:9bcdf88f62b0 63 */
<> 128:9bcdf88f62b0 64 int read();
<> 128:9bcdf88f62b0 65
<> 128:9bcdf88f62b0 66 /** Set as an output
<> 128:9bcdf88f62b0 67 */
<> 128:9bcdf88f62b0 68 void output();
<> 128:9bcdf88f62b0 69
<> 128:9bcdf88f62b0 70 /** Set as an input
<> 128:9bcdf88f62b0 71 */
<> 128:9bcdf88f62b0 72 void input();
<> 128:9bcdf88f62b0 73
<> 128:9bcdf88f62b0 74 /** Set the input pin mode
<> 128:9bcdf88f62b0 75 *
<> 128:9bcdf88f62b0 76 * @param mode PullUp, PullDown, PullNone
<> 128:9bcdf88f62b0 77 */
<> 128:9bcdf88f62b0 78 void mode(PinMode pull);
<> 128:9bcdf88f62b0 79
<> 128:9bcdf88f62b0 80 /** Binary mask of bus pins connected to actual pins (not NC pins)
<> 128:9bcdf88f62b0 81 * If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
<> 128:9bcdf88f62b0 82 *
<> 128:9bcdf88f62b0 83 * @returns
<> 128:9bcdf88f62b0 84 * Binary mask of connected pins
<> 128:9bcdf88f62b0 85 */
<> 128:9bcdf88f62b0 86 int mask() {
<> 128:9bcdf88f62b0 87 // No lock needed since _nc_mask is not modified outside the constructor
<> 128:9bcdf88f62b0 88 return _nc_mask;
<> 128:9bcdf88f62b0 89 }
<> 128:9bcdf88f62b0 90
<> 128:9bcdf88f62b0 91 /** A shorthand for write()
<> 128:9bcdf88f62b0 92 */
<> 128:9bcdf88f62b0 93 BusInOut& operator= (int v);
<> 128:9bcdf88f62b0 94 BusInOut& operator= (BusInOut& rhs);
<> 128:9bcdf88f62b0 95
<> 128:9bcdf88f62b0 96 /** Access to particular bit in random-iterator fashion
<> 128:9bcdf88f62b0 97 */
<> 128:9bcdf88f62b0 98 DigitalInOut& operator[] (int index);
<> 128:9bcdf88f62b0 99
<> 128:9bcdf88f62b0 100 /** A shorthand for read()
<> 128:9bcdf88f62b0 101 */
<> 128:9bcdf88f62b0 102 operator int();
<> 128:9bcdf88f62b0 103
<> 128:9bcdf88f62b0 104 protected:
<> 128:9bcdf88f62b0 105 virtual void lock();
<> 128:9bcdf88f62b0 106 virtual void unlock();
<> 128:9bcdf88f62b0 107 DigitalInOut* _pin[16];
<> 128:9bcdf88f62b0 108
<> 128:9bcdf88f62b0 109 /** Mask of bus's NC pins
<> 128:9bcdf88f62b0 110 * If bit[n] is set to 1 - pin is connected
<> 128:9bcdf88f62b0 111 * if bit[n] is cleared - pin is not connected (NC)
<> 128:9bcdf88f62b0 112 */
<> 128:9bcdf88f62b0 113 int _nc_mask;
<> 128:9bcdf88f62b0 114
<> 128:9bcdf88f62b0 115 PlatformMutex _mutex;
<> 128:9bcdf88f62b0 116
<> 128:9bcdf88f62b0 117 /* disallow copy constructor and assignment operators */
<> 128:9bcdf88f62b0 118 private:
<> 128:9bcdf88f62b0 119 BusInOut(const BusInOut&);
<> 128:9bcdf88f62b0 120 BusInOut & operator = (const BusInOut&);
<> 128:9bcdf88f62b0 121 };
<> 128:9bcdf88f62b0 122
<> 128:9bcdf88f62b0 123 } // namespace mbed
<> 128:9bcdf88f62b0 124
<> 128:9bcdf88f62b0 125 #endif
<> 128:9bcdf88f62b0 126
<> 128:9bcdf88f62b0 127 /** @}*/