Amit Gandhi / mbed-dev

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-dev by mbed official

api/DigitalInOut.h@129:8a86d1aafce0, 2016-05-16 (annotated)

Committer:
mbed_official
Date:
Mon May 16 12:00:12 2016 +0100
Revision:
129:8a86d1aafce0
Parent:
0:9b334a45a8ff
Child:
144:ef7eb2e8f9f7
Synchronized with git revision 1d1f7ab1330d44cc5697c682173f7090a7d6b1cb



Full URL: https://github.com/mbedmicro/mbed/commit/1d1f7ab1330d44cc5697c682173f7090a7d6b1cb/



* [STM32F4] Get PCLK1 clock and set initial CAN frequency



CAN bus opperates on APB1 peripheral clock due to that we need to get PCLK1 freq

in *can_frequency()* function to properly calculate CAN speed and reconfigure

BS1, BS2, SJW bits.



Also to fully communicate with other ST platform we set the initical CAN

frequency to 100kb/s to be able to work with the slowest platform which supports

CAN, which is NUCLEO_F303K8 (APB1 is 32MHz).



Change-Id: I10af3aa8d715dd61c9d1b216ef813193449fecbd



* [STM32F4] Fix for CAN2 interrupt index



CAN2 interrupt index was wrong leading to not properly registering interrupt.

Having this fix allow us to pass MBED_30 test.



Change-Id: I33f9ca7c81286f7746a8f8352619e213bdf9756a

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /* mbed Microcontroller Library
bogdanm 0:9b334a45a8ff 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 0:9b334a45a8ff 3 *
bogdanm 0:9b334a45a8ff 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 0:9b334a45a8ff 5 * you may not use this file except in compliance with the License.
bogdanm 0:9b334a45a8ff 6 * You may obtain a copy of the License at
bogdanm 0:9b334a45a8ff 7 *
bogdanm 0:9b334a45a8ff 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 0:9b334a45a8ff 9 *
bogdanm 0:9b334a45a8ff 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 0:9b334a45a8ff 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 0:9b334a45a8ff 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 0:9b334a45a8ff 13 * See the License for the specific language governing permissions and
bogdanm 0:9b334a45a8ff 14 * limitations under the License.
bogdanm 0:9b334a45a8ff 15 */
bogdanm 0:9b334a45a8ff 16 #ifndef MBED_DIGITALINOUT_H
bogdanm 0:9b334a45a8ff 17 #define MBED_DIGITALINOUT_H
bogdanm 0:9b334a45a8ff 18
bogdanm 0:9b334a45a8ff 19 #include "platform.h"
bogdanm 0:9b334a45a8ff 20
bogdanm 0:9b334a45a8ff 21 #include "gpio_api.h"
bogdanm 0:9b334a45a8ff 22
bogdanm 0:9b334a45a8ff 23 namespace mbed {
bogdanm 0:9b334a45a8ff 24
bogdanm 0:9b334a45a8ff 25 /** A digital input/output, used for setting or reading a bi-directional pin
bogdanm 0:9b334a45a8ff 26 */
bogdanm 0:9b334a45a8ff 27 class DigitalInOut {
bogdanm 0:9b334a45a8ff 28
bogdanm 0:9b334a45a8ff 29 public:
bogdanm 0:9b334a45a8ff 30 /** Create a DigitalInOut connected to the specified pin
bogdanm 0:9b334a45a8ff 31 *
bogdanm 0:9b334a45a8ff 32 * @param pin DigitalInOut pin to connect to
bogdanm 0:9b334a45a8ff 33 */
bogdanm 0:9b334a45a8ff 34 DigitalInOut(PinName pin) : gpio() {
bogdanm 0:9b334a45a8ff 35 gpio_init_in(&gpio, pin);
bogdanm 0:9b334a45a8ff 36 }
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 /** Create a DigitalInOut connected to the specified pin
bogdanm 0:9b334a45a8ff 39 *
bogdanm 0:9b334a45a8ff 40 * @param pin DigitalInOut pin to connect to
bogdanm 0:9b334a45a8ff 41 * @param direction the initial direction of the pin
bogdanm 0:9b334a45a8ff 42 * @param mode the initial mode of the pin
bogdanm 0:9b334a45a8ff 43 * @param value the initial value of the pin if is an output
bogdanm 0:9b334a45a8ff 44 */
bogdanm 0:9b334a45a8ff 45 DigitalInOut(PinName pin, PinDirection direction, PinMode mode, int value) : gpio() {
bogdanm 0:9b334a45a8ff 46 gpio_init_inout(&gpio, pin, direction, mode, value);
bogdanm 0:9b334a45a8ff 47 }
bogdanm 0:9b334a45a8ff 48
bogdanm 0:9b334a45a8ff 49 /** Set the output, specified as 0 or 1 (int)
bogdanm 0:9b334a45a8ff 50 *
bogdanm 0:9b334a45a8ff 51 * @param value An integer specifying the pin output value,
bogdanm 0:9b334a45a8ff 52 * 0 for logical 0, 1 (or any other non-zero value) for logical 1
bogdanm 0:9b334a45a8ff 53 */
bogdanm 0:9b334a45a8ff 54 void write(int value) {
bogdanm 0:9b334a45a8ff 55 gpio_write(&gpio, value);
bogdanm 0:9b334a45a8ff 56 }
bogdanm 0:9b334a45a8ff 57
bogdanm 0:9b334a45a8ff 58 /** Return the output setting, represented as 0 or 1 (int)
bogdanm 0:9b334a45a8ff 59 *
bogdanm 0:9b334a45a8ff 60 * @returns
bogdanm 0:9b334a45a8ff 61 * an integer representing the output setting of the pin if it is an output,
bogdanm 0:9b334a45a8ff 62 * or read the input if set as an input
bogdanm 0:9b334a45a8ff 63 */
bogdanm 0:9b334a45a8ff 64 int read() {
bogdanm 0:9b334a45a8ff 65 return gpio_read(&gpio);
bogdanm 0:9b334a45a8ff 66 }
bogdanm 0:9b334a45a8ff 67
bogdanm 0:9b334a45a8ff 68 /** Set as an output
bogdanm 0:9b334a45a8ff 69 */
bogdanm 0:9b334a45a8ff 70 void output() {
bogdanm 0:9b334a45a8ff 71 gpio_dir(&gpio, PIN_OUTPUT);
bogdanm 0:9b334a45a8ff 72 }
bogdanm 0:9b334a45a8ff 73
bogdanm 0:9b334a45a8ff 74 /** Set as an input
bogdanm 0:9b334a45a8ff 75 */
bogdanm 0:9b334a45a8ff 76 void input() {
bogdanm 0:9b334a45a8ff 77 gpio_dir(&gpio, PIN_INPUT);
bogdanm 0:9b334a45a8ff 78 }
bogdanm 0:9b334a45a8ff 79
bogdanm 0:9b334a45a8ff 80 /** Set the input pin mode
bogdanm 0:9b334a45a8ff 81 *
bogdanm 0:9b334a45a8ff 82 * @param mode PullUp, PullDown, PullNone, OpenDrain
bogdanm 0:9b334a45a8ff 83 */
bogdanm 0:9b334a45a8ff 84 void mode(PinMode pull) {
bogdanm 0:9b334a45a8ff 85 gpio_mode(&gpio, pull);
bogdanm 0:9b334a45a8ff 86 }
bogdanm 0:9b334a45a8ff 87
bogdanm 0:9b334a45a8ff 88 /** Return the output setting, represented as 0 or 1 (int)
bogdanm 0:9b334a45a8ff 89 *
bogdanm 0:9b334a45a8ff 90 * @returns
bogdanm 0:9b334a45a8ff 91 * Non zero value if pin is connected to uc GPIO
bogdanm 0:9b334a45a8ff 92 * 0 if gpio object was initialized with NC
bogdanm 0:9b334a45a8ff 93 */
bogdanm 0:9b334a45a8ff 94 int is_connected() {
bogdanm 0:9b334a45a8ff 95 return gpio_is_connected(&gpio);
bogdanm 0:9b334a45a8ff 96 }
bogdanm 0:9b334a45a8ff 97
bogdanm 0:9b334a45a8ff 98 #ifdef MBED_OPERATORS
bogdanm 0:9b334a45a8ff 99 /** A shorthand for write()
bogdanm 0:9b334a45a8ff 100 */
bogdanm 0:9b334a45a8ff 101 DigitalInOut& operator= (int value) {
bogdanm 0:9b334a45a8ff 102 write(value);
bogdanm 0:9b334a45a8ff 103 return *this;
bogdanm 0:9b334a45a8ff 104 }
bogdanm 0:9b334a45a8ff 105
bogdanm 0:9b334a45a8ff 106 DigitalInOut& operator= (DigitalInOut& rhs) {
bogdanm 0:9b334a45a8ff 107 write(rhs.read());
bogdanm 0:9b334a45a8ff 108 return *this;
bogdanm 0:9b334a45a8ff 109 }
bogdanm 0:9b334a45a8ff 110
bogdanm 0:9b334a45a8ff 111 /** A shorthand for read()
bogdanm 0:9b334a45a8ff 112 */
bogdanm 0:9b334a45a8ff 113 operator int() {
bogdanm 0:9b334a45a8ff 114 return read();
bogdanm 0:9b334a45a8ff 115 }
bogdanm 0:9b334a45a8ff 116 #endif
bogdanm 0:9b334a45a8ff 117
bogdanm 0:9b334a45a8ff 118 protected:
bogdanm 0:9b334a45a8ff 119 gpio_t gpio;
bogdanm 0:9b334a45a8ff 120 };
bogdanm 0:9b334a45a8ff 121
bogdanm 0:9b334a45a8ff 122 } // namespace mbed
bogdanm 0:9b334a45a8ff 123
bogdanm 0:9b334a45a8ff 124 #endif