diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml new file mode 100644 index 0000000..b773aa6 --- /dev/null +++ b/.github/workflows/ci.yaml @@ -0,0 +1,62 @@ +name: ci +on: + workflow_dispatch: + push: + branches: + - master + pull_request: + +jobs: + lint: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + - uses: arduino/arduino-lint-action@v1 + with: + library-manager: submit + compliance: strict + + format: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v4 + with: + ref: ${{ github.head_ref }} + fetch-depth: 2 + + - uses: jayllyz/clang-format-action@v1 + # Default options + with: + check: false + style: file + extensions: cpp,h,hpp,c,ino + clang-version: latest + + # commit the changes (if there are any) + - name: Commit changes + uses: stefanzweifel/git-auto-commit-action@v5 + with: + commit_message: "clang-format ✅" + branch: ${{ github.head_ref }} + + test: + runs-on: ubuntu-latest + needs: [lint, format] + steps: + - uses: actions/setup-python@v4 + with: + python-version: "3.x" + - uses: actions/checkout@v4 + - uses: actions/checkout@v4 + with: + repository: adafruit/ci-arduino + path: ci + - name: Install the prerequisites + run: bash ci/actions_install.sh + - name: Check for correct code formatting with clang-format + run: python3 ci/run-clang-format.py -e "ci/*" -e "bin/*" -r . + # Make sure to run the `clang-format -i src/*.h src/*.cpp` on the repo. + # To clean the Sources `clang-format -i examples/.../....ino` + + - name: Test the code on supported platforms + run: python3 ci/build_platform.py main_platforms zero feather32u4 pico_rp2040 diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md new file mode 100644 index 0000000..75080a4 --- /dev/null +++ b/CODE_OF_CONDUCT.md @@ -0,0 +1,76 @@ +# Contributor Covenant Code of Conduct + +## Our Pledge + +In the interest of fostering an open and welcoming environment, we as +contributors and maintainers pledge to making participation in our project and +our community a harassment-free experience for everyone, regardless of age, body +size, disability, ethnicity, sex characteristics, gender identity and expression, +level of experience, education, socio-economic status, nationality, personal +appearance, race, religion, or sexual identity and orientation. + +## Our Standards + +Examples of behavior that contributes to creating a positive environment +include: + +* Using welcoming and inclusive language +* Being respectful of differing viewpoints and experiences +* Gracefully accepting constructive criticism +* Focusing on what is best for the community +* Showing empathy towards other community members + +Examples of unacceptable behavior by participants include: + +* The use of sexualized language or imagery and unwelcome sexual attention or + advances +* Trolling, insulting/derogatory comments, and personal or political attacks +* Public or private harassment +* Publishing others' private information, such as a physical or electronic + address, without explicit permission +* Other conduct which could reasonably be considered inappropriate in a + professional setting + +## Our Responsibilities + +Project maintainers are responsible for clarifying the standards of acceptable +behavior and are expected to take appropriate and fair corrective action in +response to any instances of unacceptable behavior. + +Project maintainers have the right and responsibility to remove, edit, or +reject comments, commits, code, wiki edits, issues, and other contributions +that are not aligned to this Code of Conduct, or to ban temporarily or +permanently any contributor for other behaviors that they deem inappropriate, +threatening, offensive, or harmful. + +## Scope + +This Code of Conduct applies both within project spaces and in public spaces +when an individual is representing the project or its community. Examples of +representing a project or community include using an official project e-mail +address, posting via an official social media account, or acting as an appointed +representative at an online or offline event. Representation of a project may be +further defined and clarified by project maintainers. + +## Enforcement + +Instances of abusive, harassing, or otherwise unacceptable behavior may be +reported by contacting the project team at git@johanan.dev. All +complaints will be reviewed and investigated and will result in a response that +is deemed necessary and appropriate to the circumstances. The project team is +obligated to maintain confidentiality with regard to the reporter of an incident. +Further details of specific enforcement policies may be posted separately. + +Project maintainers who do not follow or enforce the Code of Conduct in good +faith may face temporary or permanent repercussions as determined by other +members of the project's leadership. + +## Attribution + +This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4, +available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html + +[homepage]: https://www.contributor-covenant.org + +For answers to common questions about this code of conduct, see +https://www.contributor-covenant.org/faq diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md new file mode 100644 index 0000000..5d5080c --- /dev/null +++ b/CONTRIBUTING.md @@ -0,0 +1,13 @@ +# Contribution Guidelines + +This library is the culmination of the expertise of many members of the open source community who have dedicated their time and hard work. The best way to ask for help or propose a new idea is to [create a new issue](https://github.com/avandalen/avdweb_Switch/issues/new) while creating a Pull Request with your code changes allows you to share your own innovations with the rest of the community. + +The following are some guidelines to observe when creating issues or PRs: + +- Be friendly; it is important that we can all enjoy a safe space as we are all working on the same project and it is okay for people to have different ideas + +- [Use code blocks](https://github.com/adam-p/markdown-here/wiki/Markdown-Cheatsheet#code); it helps us help you when we can read your code! On that note also refrain from pasting more than 30 lines of code in a post, instead [create a gist](https://gist.github.com/) if you need to share large snippets + +- Use reasonable titles; refrain from using overly long or capitalized titles as they are usually annoying and do little to encourage others to help :smile: + +- Be detailed; refrain from mentioning code problems without sharing your source code and always give information regarding your board and version of the library diff --git a/LICENSE.md b/LICENSE.md deleted file mode 100644 index 136bf62..0000000 --- a/LICENSE.md +++ /dev/null @@ -1,21 +0,0 @@ -MIT License - -Copyright (c) 2019 Albert van Dalen - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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Interpretation of Sections 15 and 16. + + If the disclaimer of warranty and limitation of liability provided +above cannot be given local legal effect according to their terms, +reviewing courts shall apply local law that most closely approximates +an absolute waiver of all civil liability in connection with the +Program, unless a warranty or assumption of liability accompanies a +copy of the Program in return for a fee. + + END OF TERMS AND CONDITIONS + + How to Apply These Terms to Your New Programs + + If you develop a new program, and you want it to be of the greatest +possible use to the public, the best way to achieve this is to make it +free software which everyone can redistribute and change under these terms. + + To do so, attach the following notices to the program. It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + Switch - Arduino switch and button library with Short/Long Press, + Double Click and Beep. + Copyright (C) 2012-2024 Albert van Dalen + Copyright (C) 2024 Abhijit Bose (aka. Boseji) + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Switch Copyright (C) 2012-2024 Albert van Dalen and + Copyright (C) 2024 Abhijit Bose (aka. Boseji) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md index 911d202..ee9c69a 100644 --- a/README.md +++ b/README.md @@ -1,8 +1,9 @@ -## About +# `avdweb_Switch` Library + Arduino switch and button library with Short/Long Press, Double Click and Beep. Supports defining callback functions. -#### General features of the Switch library +## General features of the Switch library - Performs not just de-bouncing, but also de-glitching against EMC pulses. - External pull-up resistors are not required. - Supports also long press, double click, and single click detection. @@ -11,75 +12,76 @@ Supports defining callback functions. ## Introduction Switches and push buttons need debouncing. It is straightforward to do this with software, using this library. -For a complete description see: https://www.avdweb.nl/arduino/hardware-interfacing/simple-switch-debouncer +For a complete description see: + + ## Using the Switch library -Declare each switch or button, by indicanting its GPIO number: +Declare each switch or button, by indicating its GPIO number: -``` +```c Switch buttonGND = Switch(4); // GPIO 4 ``` -The library sets GPIO in input mode with an internal pull-up resistor by default. The constructor accepts several arguments including the particular input mode (e.g. without pull-up), whether voltage level high must be interpreted as on or off (argument `polarity` must indicate the pushed voltage level), and the duration of the time periods that define the behaviour. +The library sets GPIO in input mode with an internal pull-up resistor by default. The constructor accepts several arguments including the particular input mode (e.g. without pull-up), whether voltage level high must be interpreted as on or off (argument `polarity` must indicate the pushed voltage level), and the duration of the time periods that define the behavior. All switches have to be repeatedly polled individually to update the status. This is usually done in the `loop()` function. -``` +```c buttonGND.poll(); ``` After refreshing the status, it can be checked with get functions. For example: -``` +```c if(buttonGND.pushed()) Serial.print("pushed"); ``` -Any event occurs based on the deglitched and debounced pin signal. See below for details on this function of the library that happens transparently. +Any event occurs based on the de-glitched and debounced pin signal. See below for details on this function of the library that happens transparently. Each possible event (each switch-status) has its own get function: -#### switched() - -It returns "true" if the pin voltage level changed, no matter the direction (from low to high or from high to low). +### `switched()` -#### on() +It returns `true` if the pin voltage level changed, no matter the direction (from low to high or from high to low). -It returns "true" if the pin voltage agrees with the one defined by `polarity` (which is LOW by default). Use only for toggle switches. It returns "true" as long as the switch is in the "on" position. The polarity of the switch in the "on" position has to be filled in correctly. There is no off() function, this is simply !on(). +### `on()` -#### pushed() +It returns `true` if the pin voltage agrees with the one defined by `polarity` (which is LOW by default). Use only for toggle switches. It returns "true" as long as the switch is in the "on" position. The polarity of the switch in the "on" position has to be filled in correctly. There is no `off()` function, this is simply `!on()`. -It returns "true" if a button was pushed (switched towards the on position). Use only for push buttons. Note that this provides instant response and can be used as "single-click" if "double-click" and "long-press" are not watched events. "Pushed" occurs simultaneously with "double-click" and "long-press". +### `pushed()` -#### released() +It returns `true` if a button was pushed (switched towards the on position). Use only for push buttons. Note that this provides instant response and can be used as **"single-click"** if **"double-click"** and **"long-press"** are not watched events. **"Pushed"** occurs simultaneously with **"double-click"** and **"long-press"**. -It returns "true" if a push button was released (switched towards the off position), this will however rarely be used. +### `released()` -#### longPress() +It returns `true` if a push button was released (switched towards the off position), this will however rarely be used. -It returns "true" if a push button is pressed longer than 300ms (by default). Note that a longPress() always will be preceded by pushed() from the first push. +### `longPress()` -#### doubleClick() +It returns `true` if a push button is pressed longer than `300ms` (by default). Note that a `longPress()` always will be preceded by `pushed()` from the first push. -It returns "true" if a push button is double clicked within 250ms (by default). Note that a doubleClick() always will be preceded by pushed() from the first push. +### `doubleClick()` -The anteceding pushed() event can't be avoided, because to restrict the pushed() function to single clicks it would have to wait for a possible second click, which would introduce an annoying delay. So, the action on doubleClick() has to undo the previous action on pushed(). +It returns `true` if a push button is double clicked within `250ms` (by default). Note that a `doubleClick()` always will be preceded by `pushed()` from the first push. -#### singleClick() +The anteceding `pushed()` event can't be avoided, because to restrict the `pushed()` function to single clicks it would have to wait for a possible second click, which would introduce an annoying delay. So, the action on `doubleClick()` has to undo the previous action on `pushed()`. -It returns "true" if a push button is clicked once and the requirements for doubleClick and longPress are not met. The event thus occur several miliseconds after the actual push, because it depends on the other events not happening after the push. Use this if three different interactions are needed in combination with doubleClick and longPress. Note that a singleClick() always will be preceded by pushed(). Use pushed() instead if immediate response is required and there is no interest in monitoring doubleClick and longPress. +### `singleClick()` +It returns "true" if a push button is clicked once and the requirements for `doubleClick` and `longPress` are not met. The event thus occur several milliseconds after the actual push, because it depends on the other events not happening after the push. Use this if three different interactions are needed in combination with `doubleClick` and `longPress`. Note that a `singleClick()` always will be preceded by `pushed()`. Use `pushed()` instead if immediate response is required and there is no interest in monitoring `doubleClick` and longPress. -#### Example +## Examples See the example in the library for a complete working program. ### Transparent signal filtering -#### Deglitching -Sudden short changes in the microcontroler power supply may create inexistent switched() events if the pin is polled in that instant. Deglitching is achieved because the software will not believe that a voltage change has happened (a swithed event) until the voltage remains in the new level for a minimum period. A voltage change will be ignored if it returns to the original level before that period. +#### De-glitching +Sudden short changes in the microcontroller power supply may create inexistent switched() events if the pin is polled in that instant. De-glitching is achieved because the software will not believe that a voltage change has happened (a switched event) until the voltage remains in the new level for a minimum period. A voltage change will be ignored if it returns to the original level before that period. #### Debouncing -Due to the elastic properties of the metals in the contacts they bounce away from each other after the initial contact creating false switched() events after an initial true switch, until the voltage stabilizes in the new level. Debouncing forces a refractary period after an initial switch, during which any voltage level change is ignored. +Due to the elastic properties of the metals in the contacts they bounce away from each other after the initial contact creating false switched() events after an initial true switch, until the voltage stabilizes in the new level. Debouncing forces a refractory period after an initial switch, during which any voltage level change is ignored. ### Using callback functions to be triggered by button events @@ -87,7 +89,7 @@ Callbacks can be used, instead of needing to check with an `if` statement whethe With a callback registered, Switch will run the defined function when the conditions are met at the time `poll()` is called. Calling `poll()` periodically is the only requirement. -First, define a function with the action you want to perform, with no return type (void) and one argument, a pointer to some reference (or use nullptr if you don't need it.): +First, define a function with the action you want to perform, with no return type `(void)` and one argument, a pointer to some reference (or use `nullptr` if you don't need it.): ```C++ void foo(void* ref) { @@ -114,7 +116,7 @@ See the example in the library for a complete working program. ### Notes -The poll instruction must be called at least 50 times per second, i.e. every 20ms; it takes about 20us in Arduino. +The poll instruction must be called at least `50 times` per second, i.e. every `20ms`; it takes about 20us in Arduino. The button states are saved till the next poll. Then all previous button states will be cleared, so the button states must be read every poll interval, after calling the poll function. @@ -122,7 +124,7 @@ Reading a button several times within a poll interval gives the same value, so r ### SUGESTION: Using an interrupt service routine for polling the buttons -Polling buttons has a high priority and should be done often. Slow functions such as Serial.print() may disrupt the timing. +Polling buttons has a high priority and should be done often. Slow functions such as `Serial.print()` may disrupt the timing. Polling could be done in a function triggered by a timed interrupt. Remember to keep the subsequent button actions short as you would do with any code in interrupts. @@ -161,33 +163,33 @@ For ESP8266 use the [Ticker](https://arduino-esp8266.readthedocs.io/en/latest/li ### How to use successive button events -With the Switch library, you can use all button events at the same time with the same button. For example pushed(), released(), doubleClick() and longPress(). To see an example of what can be achieved with several button events in order to perform different functions, run Windows Explorer: a single click selects a file and a double click opens it. +With the Switch library, you can use all button events at the same time with the same button. For example `pushed()`, `released()`, `doubleClick()` and `longPress()`. To see an example of what can be achieved with several button events in order to perform different functions, run Windows Explorer: a single click selects a file and a double click opens it. -#### Button pushed event followed by a longPress event +#### Button pushed event followed by a `longPress` event -A long-press generates first a pushed event and after 300ms (by default) the longPress event. This is not a shortcoming but a logical consequence. We can, of course, not always wait 300ms to see if a push might be a long push. +A long-press generates first a pushed event and after `300ms` (by default) the `longPress` event. This is not a shortcoming but a logical consequence. We can, of course, not always wait `300ms` to see if a push might be a long push. -#### Button pushed event followed by a doubleClick event +#### Button pushed event followed by a `doubleClick` event -The same happens with doubleClick, which also generates two pushed() events. When doubleClick is used, ignore the second pushed() result or don't call pushed(). When doubleClick is not needed, simply don't call doubleClick(). +The same happens with `doubleClick`, which also generates two `pushed()` events. When `doubleClick` is used, ignore the second `pushed()` result or don't call `pushed()`. When `doubleClick` is not needed, simply don't call `doubleClick()`. -#### Combining singleClick, doubleClick, and longPress events +#### Combining `singleClick`, `doubleClick`, and `longPress` events -If these three events must be used toghether the best strategy is to stick to their get functions and avoid using pushed(). +If these three events must be used together the best strategy is to stick to their get functions and avoid using pushed(). ## Hardware considerations -#### Connecting switches to the microcontroler +### Connecting switches to the microcontroller There is nothing needed beyond the switches, just connect the switches between the ground and a digital pin. -#### Switch between GND and digital pin +### Switch between GND and digital pin This is technically speaking the best solution and it is taken by the library as default. An external pull-up resistor is not needed but allowed. -#### Switch between VCC(3.3V or 5V) and digital pin +### Switch between VCC(3.3V or 5V) and digital pin -For switches connected to the Arduino power supply, the settings are: polarity = HIGH and pinmode = INPUT, which disables the internal pull-up resistor. Note that we need external pull-down resistors of about 10k here. +For switches connected to the Arduino power supply, the settings are: `polarity = HIGH` and `pinmode = INPUT`, which disables the internal pull-up resistor. Note that we need external pull-down resistors of about 10k here. ## Questions @@ -197,21 +199,21 @@ Post issues on the github repository. ## Explanation of the inner working -### New: software deglitch +### New: software de-glitch -Normally, just debouncing is used. But debouncing doesn't make the software insensitive to noise pulses, which could lead to dangerous situations: if there is a poll() at the moment of a noise pulse, the software can detect an activated switch. To prevent this, a deglitch function is added now: during a "deglitchPeriod", all input values have to be equal. +Normally, just debouncing is used. But debouncing doesn't make the software insensitive to noise pulses, which could lead to dangerous situations: if there is a `poll()` at the moment of a noise pulse, the software can detect an activated switch. To prevent this, a de-glitch function is added now: during a `deglitchPeriod`, all input values have to be equal. ### Software debounce, how does it work -The software debounce algorithm is based on the following assumptions; the 50ms (by default) is the so-called debounce period: +The software debounce algorithm is based on the following assumptions; the `50ms` (by default) is the so-called debounce period: -- The switch bounce time is less than 50ms. -- The time between successive keystrokes is larger than 50ms. -- A reaction time of 50ms is acceptable. +- The switch bounce time is less than `50ms`. +- The time between successive keystrokes is larger than `50ms`. +- A reaction time of `50ms` is acceptable. If the above assumptions are met, the software debounce algorithm can be quite simple: a switch event is only accepted when the elapsed time since the last switch event is larger than the debounce period. -A debounce period of 50ms is a safe value; it doesn't hurt the reaction time, and will handle even bad switches. +A debounce period of `50ms` is a safe value; it doesn't hurt the reaction time, and will handle even bad switches. See the following pseudocode: @@ -222,7 +224,7 @@ if((current_deglitched != previous_debounced) & ((current_ms - last_switchedTime ### Overall functioning -Several discrete signals (updated at poll times) are created. The raw signal is deglitched, the later debounced, and that one in turn is processed to generate a signal for each one of the events. +Several discrete signals (updated at poll times) are created. The raw signal is de-glitched, the later debounced, and that one in turn is processed to generate a signal for each one of the events. ### Timing diagram @@ -316,20 +318,26 @@ Several discrete signals (updated at poll times) are created. The raw signal is ### Additional information See also: [A Guide To Debouncing](http://www.eng.utah.edu/~cs5780/debouncing.pdf) +### Developer Note -### Licenses -#### Library +Please perform formatting before committing the code. -[![GNU License](https://www.gnu.org/graphics/gplv3-88x31.png)](https://www.gnu.org/licenses/gpl-3.0.en.html) +```sh +clang-format -i src/*.* examples/**/*.ino +``` -Copyright (C) 2012 Albert van Dalen +## License -http://www.avdweb.nl +`SPDX: GPL-3.0-or-later` -This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. -#### Documents +`Switch` - Arduino switch and button library with Short/Long Press, Double Click and Beep. + +Copyright (C) 2012-2024 Albert van Dalen -[![bt-nc-sa](http://i.creativecommons.org/l/by-nc-sa/3.0/88x31.png)](http://creativecommons.org/licenses/by-nc-sa/3.0/) +Copyright (C) 2024 Abhijit Bose (aka. Boseji) :contributor: + +This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. -This document is licensed under a [Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License](http://creativecommons.org/licenses/by-nc-sa/3.0/). +This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. +You should have received a copy of the GNU General Public License along with this program. If not, see . diff --git a/avdweb_Switch.cpp b/avdweb_Switch.cpp deleted file mode 100644 index 36a5acc..0000000 --- a/avdweb_Switch.cpp +++ /dev/null @@ -1,278 +0,0 @@ -/* -Switch.cpp -Copyright (C) 2012 Albert van Dalen http://www.avdweb.nl -This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License -as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. -This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty -of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License at http://www.gnu.org/licenses . - -AUTHOR: Albert van Dalen -WEBSITE: http://www.avdweb.nl/arduino/hardware-interfacing/simple-switch-debouncer.html - -HISTORY: -1.0.0 20-04-2013 _debouncePeriod=50 -1.0.1 22-05-2013 Added longPress, doubleClick -1.0.2 01-12-2015 added process(input) -1.0.3 15-01-2016 added deglitching -1.0.5 25-01-2017 file renamed to avdweb_Switch -1.1.0 28-07-2018 added callbacks (code by Sean Lanigan, added by Martin Laclaustra) -1.2.0-rc 28-07-2018 added singleclick. Reorganize, keeping variables for each event in one function -1.2.0 29-09-2018 released -1.2.1 30-11-2018 bugfix. Initialize time variables in the constructor. Fixes false event if first call to poll was delayed -1.2.2 18-10-2019 beep when a switch is pressed with using a setBeepAllCallback function -1.2.3 03-04-2020 made public: deglitchPeriod, debouncePeriod, longPressPeriod, doubleClickPeriod -1.2.4 14-07-2021 "static switchCallback_t _beepAllCallback = nullptr;" gives error with SAMD21, removed "= nullptr;" - -..........................................DEGLITCHING.............................. - - ________________ _ - on | | | | _ - | | | | | | - | |_| |___| |__ - analog off_____|_____________________________|____________________________ - - ________________ _ _ - input _____| |_| |___| |_______________________________ - - poll ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ - - equal 0 1 1 0 1 1 1 1 1 1 1 1 0 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 - - deglitchPeriod <--------><-- <-- <- <--------><--------><-------- - ___________________________ - deglitched _________________| |__________________ - - deglitchTime ^ ^ ^ ^ ^ ^ ^ - - ..........................................DEBOUNCING............................. - - debouncePeriod <--------------------------------> - _________________________________ - debounced _________________| |____________ - _ _ - _switched _________________| |_______________________________| |__________ - - switchedTime ^ ^ - - -********************************************************************************** -........................................DOUBLE CLICK.............................. - - __________ ______ - debounced ________| |_______| |_____________________________ - - poll ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ - _ _ - pushed _________| |________________| |__________________________________ - - pushedTime ^ ^ - _ _ - released ____________________| |____________| |___________________________ - - releasedTime ^ ^ - - doubleClickPeriod <-------------------------------------> - _ - _doubleClick ___________________________| |__________________________________ - - -........................................LONG PRESS................................ - - ___________________________ - debounced ________| |___________________________ - - poll ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ - - longPressPeriod <---------------> - _ _ - _switched _________| |_________________________| |________________________ - __________ - longPressDisable ___________________________| |_________________________ - _ - _longPress ___________________________| |__________________________________ - - -........................................SINGLE CLICK.............................. - - __________ ______ - debounced ________| |_______________________________| |_____ - - poll ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ - - longPressPeriod <---------------> - doubleClickPeriod <-------------------------------------> - _ _ _ _ - _switched _________| |_______| |_____________________________| |____| |___ - _____ - singleClickDisable______________________________________________| |__________ - _ - _singleClick _______________________________________________| |______________ - -*/ - -#include "Arduino.h" -#include "avdweb_Switch.h" - -switchCallback_t Switch::_beepAllCallback = nullptr; // definition static function pointer with typedef -void* Switch::_beepAllCallbackParam = nullptr; - -Switch::Switch(byte _pin, byte PinMode, bool polarity, unsigned long debouncePeriod, unsigned long longPressPeriod, unsigned long doubleClickPeriod, unsigned long deglitchPeriod): -deglitchPeriod(deglitchPeriod), debouncePeriod(debouncePeriod), longPressPeriod(longPressPeriod), doubleClickPeriod(doubleClickPeriod), pin(_pin), polarity(polarity) -{ pinMode(pin, PinMode); - switchedTime = millis(); - debounced = digitalRead(pin); - singleClickDisable = true; - poll(); -} - -bool Switch::poll() -{ input = digitalRead(pin); - ms = millis(); - return process(); -} - -bool Switch::process() -{ deglitch(); - debounce(); - calcSingleClick(); - calcDoubleClick(); - calcLongPress(); - if(switched()) - { switchedTime = ms; //stores last times for future rounds - if(pushed()) - { if(_beepAllCallback) _beepAllCallback(_beepAllCallbackParam); - pushedTime = ms; - } else { releasedTime = ms; - } - } - triggerCallbacks(); - return _switched; -} - -void inline Switch::deglitch() -{ if(input == lastInput) equal = 1; - else - { equal = 0; - deglitchTime = ms; - } - if(equal && ((ms - deglitchTime) > deglitchPeriod)) // max 50ms, disable deglitch: 0ms - { deglitched = input; - deglitchTime = ms; - } - lastInput = input; -} - -void inline Switch::debounce() -{ _switched = 0; - if((deglitched != debounced) && ((ms - switchedTime) > debouncePeriod)) - { debounced = deglitched; - _switched = 1; - } -} - -void inline Switch::calcSingleClick() -{ _singleClick = false; - if(pushed()) - { if((ms - pushedTime) >= doubleClickPeriod) - { singleClickDisable = false; //resets when pushed not in second click of doubleclick - } else { singleClickDisable = true; //silence single click in second cl. doublecl. - } - } - if(!singleClickDisable) - { _singleClick = !switched() && !on() && ((releasedTime - pushedTime) <= longPressPeriod) && ((ms - pushedTime) >= doubleClickPeriod); // true just one time between polls - singleClickDisable = _singleClick; // will be reset at next push - } -} - -void inline Switch::calcDoubleClick() -{ _doubleClick = pushed() && ((ms - pushedTime) < doubleClickPeriod); -} - -void inline Switch::calcLongPress() -{ _longPress = false; - if(released()) longPressDisable = false; //resets when released - if(!longPressDisable) - { _longPress = !switched() && on() && ((ms - pushedTime) > longPressPeriod); // true just one time between polls - longPressDisable = _longPress; // will be reset at next release - } -} - -bool Switch::switched() -{ return _switched; -} - -bool Switch::on() -{ return !(debounced^polarity); -} - -bool Switch::pushed() -{ return _switched && !(debounced^polarity); -} - -bool Switch::released() -{ return _switched && (debounced^polarity); -} - -bool Switch::longPress() -{ return _longPress; -} - -bool Switch::doubleClick() -{ return _doubleClick; -} - -bool Switch::singleClick() -{ return _singleClick; -} - -void Switch::triggerCallbacks() -{ if(_pushedCallback && pushed()) - { _pushedCallback(_pushedCallbackParam); - } - else if(_releasedCallback && released()) - { _releasedCallback(_releasedCallbackParam); - } - - if(_longPressCallback && longPress()) - { _longPressCallback(_longPressCallbackParam); - } - - if(_doubleClickCallback && doubleClick()) - { _doubleClickCallback(_doubleClickCallbackParam); - } - - if(_singleClickCallback && singleClick()) - { _singleClickCallback(_singleClickCallbackParam); - } -} - -void Switch::setPushedCallback(switchCallback_t cb, void* param) -{ _pushedCallback = cb; // Store the "pushed" callback function - _pushedCallbackParam = param; -} - -void Switch::setReleasedCallback(switchCallback_t cb, void* param) -{ _releasedCallback = cb; // Store the "released" callback function - _releasedCallbackParam = param; -} - -void Switch::setLongPressCallback(switchCallback_t cb, void* param) -{ _longPressCallback = cb; // Store the "long press" callback function - _longPressCallbackParam = param; -} - -void Switch::setDoubleClickCallback(switchCallback_t cb, void* param) -{ _doubleClickCallback = cb; // Store the "double click" callback function - _doubleClickCallbackParam = param; -} - -void Switch::setSingleClickCallback(switchCallback_t cb, void* param) -{ _singleClickCallback = cb; // Store the "double click" callback function - _singleClickCallbackParam = param; -} - -//void Switch::setBeepAllCallback(void(*cb)(void*), void* param) static function pointer without typedef -void Switch::setBeepAllCallback(switchCallback_t cb, void* param) // with static function pointer without typedef -{ _beepAllCallback = cb; // Store the "beep" callback function - _beepAllCallbackParam = param; -} diff --git a/avdweb_Switch.h b/avdweb_Switch.h deleted file mode 100644 index ce51ac9..0000000 --- a/avdweb_Switch.h +++ /dev/null @@ -1,73 +0,0 @@ -/* -Switch.cpp -Copyright (C) 2012 Albert van Dalen http://www.avdweb.nl -This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License -as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. -This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty -of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License at http://www.gnu.org/licenses . - -AUTHOR: Albert van Dalen -WEBSITE: http://www.avdweb.nl/arduino/hardware-interfacing/simple-switch-debouncer.html -*/ - -#ifndef AVDWEB_SWITCH_H -#define AVDWEB_SWITCH_H - -typedef void (*switchCallback_t)(void*); - -class Switch -{ -public: - Switch(byte _pin, byte PinMode=INPUT_PULLUP, bool polarity=LOW, unsigned long debouncePeriod=50, unsigned long longPressPeriod=300, unsigned long doubleClickPeriod=250, unsigned long deglitchPeriod=10); - bool poll(); // Returns 1 if switched - bool switched(); // will be refreshed by poll() - bool on(); - bool pushed(); // will be refreshed by poll() - bool released(); // will be refreshed by poll() - bool longPress(); // will be refreshed by poll() - bool doubleClick(); // will be refreshed by poll() - bool singleClick(); // will be refreshed by poll() - - // Set methods for event callbacks - void setPushedCallback(switchCallback_t cb, void* param = nullptr); - void setReleasedCallback(switchCallback_t cb, void* param = nullptr); - void setLongPressCallback(switchCallback_t cb, void* param = nullptr); - void setDoubleClickCallback(switchCallback_t cb, void* param = nullptr); - void setSingleClickCallback(switchCallback_t cb, void* param = nullptr); - void setBeepAllCallback(switchCallback_t cb, void* param = nullptr); - - unsigned long deglitchPeriod, debouncePeriod, longPressPeriod, doubleClickPeriod; - - protected: - bool process(); // not inline, used in child class - void inline deglitch(); - void inline debounce(); - void inline calcLongPress(); - void inline calcDoubleClick(); - void inline calcSingleClick(); - void triggerCallbacks(); - - unsigned long deglitchTime, switchedTime, pushedTime, releasedTime, ms; - const byte pin; - const bool polarity; - bool input, lastInput, equal, deglitched, debounced, _switched, _longPress, longPressDisable, _doubleClick, _singleClick, singleClickDisable; - - // Event callbacks - switchCallback_t _pushedCallback = nullptr; - switchCallback_t _releasedCallback = nullptr; - switchCallback_t _longPressCallback = nullptr; - switchCallback_t _doubleClickCallback = nullptr; - switchCallback_t _singleClickCallback = nullptr; - static switchCallback_t _beepAllCallback; // static function pointer, can be used by all objects - //static switchCallback_t _beepAllCallback = nullptr; // gives error with SAMD21 - //static void(*_beepAllCallback)(void*) = nullptr; // static function pointer without typedef - - void* _pushedCallbackParam = nullptr; - void* _releasedCallbackParam = nullptr; - void* _longPressCallbackParam = nullptr; - void* _doubleClickCallbackParam = nullptr; - void* _singleClickCallbackParam = nullptr; - static void* _beepAllCallbackParam; // can be used by all objects - //static void* _beepAllCallbackParam = nullptr; // gives error with SAMD21 -}; -#endif diff --git a/examples/SwitchCallbackExample/SwitchCallbackExample.ino b/examples/SwitchCallbackExample/SwitchCallbackExample.ino index 9f891c6..b90c83b 100644 --- a/examples/SwitchCallbackExample/SwitchCallbackExample.ino +++ b/examples/SwitchCallbackExample/SwitchCallbackExample.ino @@ -1,4 +1,3 @@ -#include "Arduino.h" #include "avdweb_Switch.h" const byte toggleSwitchpin = 10; @@ -7,29 +6,31 @@ const byte multiresponseButtonpin = 9; Switch toggleSwitch = Switch(toggleSwitchpin); Switch multiresponseButton = Switch(multiresponseButtonpin); -void buttonCallbackFunction(void* s) { +void buttonCallbackFunction(void *s) { Serial.print("Button: "); - Serial.println((char*)s); + Serial.println((char *)s); } -void toggleCallbackFunction(void* s) { +void toggleCallbackFunction(void *s) { Serial.print("Toggle: "); - Serial.println((char*)s); + Serial.println((char *)s); } -void setup() -{ +void setup() { Serial.begin(9600); - toggleSwitch.setPushedCallback(&toggleCallbackFunction, (void*)"turned on"); - toggleSwitch.setReleasedCallback(&toggleCallbackFunction, (void*)"turned off"); + toggleSwitch.setPushedCallback(&toggleCallbackFunction, (void *)"turned on"); + toggleSwitch.setReleasedCallback(&toggleCallbackFunction, + (void *)"turned off"); - multiresponseButton.setLongPressCallback(&buttonCallbackFunction, (void*)"long press"); - multiresponseButton.setDoubleClickCallback(&buttonCallbackFunction, (void*)"double click"); - multiresponseButton.setSingleClickCallback(&buttonCallbackFunction, (void*)"single click"); + multiresponseButton.setLongPressCallback(&buttonCallbackFunction, + (void *)"long press"); + multiresponseButton.setDoubleClickCallback(&buttonCallbackFunction, + (void *)"double click"); + multiresponseButton.setSingleClickCallback(&buttonCallbackFunction, + (void *)"single click"); } -void loop() -{ +void loop() { toggleSwitch.poll(); multiresponseButton.poll(); } diff --git a/examples/SwitchExample/SwitchExample.ino b/examples/SwitchExample/SwitchExample.ino index e82e155..10c8020 100644 --- a/examples/SwitchExample/SwitchExample.ino +++ b/examples/SwitchExample/SwitchExample.ino @@ -1,54 +1,81 @@ -#include "Arduino.h" -#include "avdweb_Switch.h" +#include "avdweb_Switch.h" -const byte pushButtonpin = 10; // downButton -const byte toggleSwitchpin = 9; // upButton +const byte pushButtonpin = 10; // downButton +const byte toggleSwitchpin = 9; // upButton const byte multiresponseButtonpin = 4; // selectButton -const byte alleventsButtonpin = 7; // weldButton -const byte buzzerPin = 3; // for beep when a switch is pressed +const byte alleventsButtonpin = 7; // weldButton +const byte buzzerPin = 3; // for beep when a switch is pressed int i; -Switch pushButton = Switch(pushButtonpin); // button to GND, use internal 20K pullup resistor +Switch pushButton = + Switch(pushButtonpin); // button to GND, use internal 20K pullup resistor Switch toggleSwitch = Switch(toggleSwitchpin); Switch multiresponseButton = Switch(multiresponseButtonpin); Switch alleventsButton = Switch(alleventsButtonpin); // Other examples of constructors -// Switch pushButtonVCC = Switch(pushButtonpin, INPUT, HIGH); // button to VCC, 10k pull-down resistor, no internal pull-up resistor, HIGH polarity -// Switch pushButton1ms = Switch(pushButtonpin, INPUT_PULLUP, LOW, 1); // debounceTime 1ms +// Switch pushButtonVCC = Switch(pushButtonpin, INPUT, HIGH); // button to VCC, +// 10k pull-down resistor, no internal pull-up resistor, HIGH polarity Switch +// pushButton1ms = Switch(pushButtonpin, INPUT_PULLUP, LOW, 1); // debounceTime +// 1ms -void beepCallbackFunction(void* s) // optional -{ tone(3, 2400, 5); // is non-blocking - //Serial.print("BeepCallback: "); Serial.println((char*)s); +void beepCallbackFunction(void *s) // optional +{ + tone(3, 2400, 5); // is non-blocking + // Serial.print("BeepCallback: "); Serial.println((char*)s); } -void setup() -{ Serial.begin(115200); - toggleSwitch.setBeepAllCallback(&beepCallbackFunction/*, "Beep done"*/); // needed only for one switch because of static +void setup() { + Serial.begin(115200); + toggleSwitch.setBeepAllCallback( + &beepCallbackFunction /*, "Beep done"*/); // needed only for one switch + // because of static // multiresponseButton.doubleClickPeriod=0; disable doubleClick() } -void loop() -{ // pushButton simple events +void loop() { // pushButton simple events pushButton.poll(); - if(pushButton.switched()) Serial.print("pushButton switched "); - if(pushButton.pushed()) {Serial.print("pushButton pushed "); Serial.print(++i); Serial.println(" times");} - if(pushButton.released()) Serial.println("pushButton released"); + if (pushButton.switched()) + Serial.print("pushButton switched "); + if (pushButton.pushed()) { + Serial.print("pushButton pushed "); + Serial.print(++i); + Serial.println(" times"); + } + if (pushButton.released()) + Serial.println("pushButton released"); // toggleSwitch report status only when changed - if(toggleSwitch.poll()) {Serial.print("toggleSwitch status changed to "); Serial.println(toggleSwitch.on());} + if (toggleSwitch.poll()) { + Serial.print("toggleSwitch status changed to "); + Serial.println(toggleSwitch.on()); + } // multiresponseButton complex events multiresponseButton.poll(); - if(multiresponseButton.longPress()) Serial.println("multiresponseButton longPress"); - if(multiresponseButton.doubleClick()) Serial.println("multiresponseButton doubleClick"); - if(multiresponseButton.singleClick()) Serial.println("multiresponseButton singleClick"); + if (multiresponseButton.longPress()) + Serial.println("multiresponseButton longPress"); + if (multiresponseButton.doubleClick()) + Serial.println("multiresponseButton doubleClick"); + if (multiresponseButton.singleClick()) + Serial.println("multiresponseButton singleClick"); // alleventsButton complex events alleventsButton.poll(); - if(alleventsButton.switched()) {Serial.println("all_e_B switched."); Serial.print(" all_e_B status to "); Serial.print(alleventsButton.on()); Serial.println(".");} - if(alleventsButton.pushed()) {Serial.println(" all_e_B pushed.");} - if(alleventsButton.released()) Serial.println(" all_e_B released."); - if(alleventsButton.longPress()) Serial.println(" ==> all_e_B longPress."); - if(alleventsButton.doubleClick()) Serial.println(" ==> all_e_B doubleClick."); - if(alleventsButton.singleClick()) Serial.println(" ==> all_e_B singleClick."); + if (alleventsButton.switched()) { + Serial.println("all_e_B switched."); + Serial.print(" all_e_B status to "); + Serial.print(alleventsButton.on()); + Serial.println("."); + } + if (alleventsButton.pushed()) { + Serial.println(" all_e_B pushed."); + } + if (alleventsButton.released()) + Serial.println(" all_e_B released."); + if (alleventsButton.longPress()) + Serial.println(" ==> all_e_B longPress."); + if (alleventsButton.doubleClick()) + Serial.println(" ==> all_e_B doubleClick."); + if (alleventsButton.singleClick()) + Serial.println(" ==> all_e_B singleClick."); } diff --git a/keywords.txt b/keywords.txt index 74cd933..9b65f44 100644 --- a/keywords.txt +++ b/keywords.txt @@ -7,6 +7,7 @@ ####################################### Switch KEYWORD1 +avdweb_Switch.h KEYWORD1 ####################################### # Methods and Functions (KEYWORD2) @@ -33,4 +34,4 @@ setSingleClickCallback KEYWORD2 ####################################### # Constants (LITERAL1) ####################################### - + diff --git a/library.properties b/library.properties index 910c089..55a4781 100644 --- a/library.properties +++ b/library.properties @@ -1,10 +1,11 @@ -name=Switch -version=1.2.4 -author=Albert van Dalen -maintainer=Albert van Dalen +name=avdweb_Switch +version=1.2.5 +author=Albert van Dalen +license=GPL-3.0-or-later +maintainer=Abhijit Bose (aka. Boseji) sentence=Arduino library for deglitching and debouncing switches and buttons. paragraph=Supports detecting longPress, doubleClick, and singleClick. Supports defining callback functions. category=Signal Input/Output url=https://github.com/avandalen/avdweb_Switch -architectures=avr, samd, esp8266, esp32, megaavr -license=GPL-3.0+ +architectures=* +includes=avdweb_Switch.h diff --git a/src/avdweb_Switch.cpp b/src/avdweb_Switch.cpp new file mode 100644 index 0000000..8084309 --- /dev/null +++ b/src/avdweb_Switch.cpp @@ -0,0 +1,321 @@ +/** + * avdweb_Switch.cpp + * + * Switch - Arduino switch and button library with Short/Long Press, + * Double Click and Beep. + * =========================================================== + * + * Sources + * ------- + * https://github.com/avandalen/avdweb_Switch + * + * Website + * ------- + * http://www.avdweb.nl/arduino/hardware-interfacing/simple-switch-debouncer.html + * + * License + * -------- + * SPDX: GPL-3.0-or-later + * + * Switch - Arduino switch and button library with Short/Long Press, + * Double Click and Beep. + * Copyright (C) 2012-2024 Albert van Dalen + * Copyright (C) 2024 Abhijit Bose (aka. Boseji) :contributor: + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + * Notes + * ------ + * + * HISTORY: + * 1.0.0 20-04-2013 _debouncePeriod=50 + * 1.0.1 22-05-2013 Added longPress, doubleClick + * 1.0.2 01-12-2015 added process(input) + * 1.0.3 15-01-2016 added deglitching + * 1.0.5 25-01-2017 file renamed to avdweb_Switch + * 1.1.0 28-07-2018 added callbacks (code by Sean Lanigan, added by + * Martin Laclaustra) + * 1.2.0-rc 28-07-2018 added singleclick. Reorganize, keeping + * variables for each event in one function + * 1.2.0 29-09-2018 released + * 1.2.1 30-11-2018 bugfix. Initialize time variables in the constructor. + * Fixes false event if first call to poll was delayed + * 1.2.2 18-10-2019 beep when a switch is pressed with using a + * setBeepAllCallback function + * 1.2.3 03-04-2020 made public: deglitchPeriod, debouncePeriod, + * longPressPeriod, doubleClickPeriod + * 1.2.4 14-07-2021 "static switchCallback_t _beepAllCallback = nullptr;" + * gives error with SAMD21, removed "= nullptr;" + * + ******************************************************************************* +.......................................DEGLITCHING.............................. + + ________________ _ + on | | | | _ + | | | | | | + | |_| |___| |__ + analog off_____|_____________________________|____________________________ + + ________________ _ _ + input _____| |_| |___| |_______________________________ + + poll ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ + + equal 0 1 1 0 1 1 1 1 1 1 1 1 0 0 0 1 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 + + deglitchPeriod <--------><-- <-- <- <--------><--------><-------- + ___________________________ + deglitched _________________| |__________________ + + deglitchTime ^ ^ ^ ^ ^ ^ ^ + + ........................................DEBOUNCING............................. + + debouncePeriod <--------------------------------> + _________________________________ + debounced _________________| |____________ + _ _ + _switched _________________| |_______________________________| |__________ + + switchedTime ^ ^ + + +******************************************************************************** +......................................DOUBLE CLICK.............................. + + __________ ______ + debounced ________| |_______| |_____________________________ + + poll ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ + _ _ + pushed _________| |________________| |__________________________________ + + pushedTime ^ ^ + _ _ + released ____________________| |____________| |___________________________ + + releasedTime ^ ^ + + doubleClickPeriod <-------------------------------------> + _ + _doubleClick ___________________________| |__________________________________ + + +......................................LONG PRESS................................ + + ___________________________ + debounced ________| |___________________________ + + poll ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ + + longPressPeriod <---------------> + _ _ + _switched _________| |_________________________| |________________________ + __________ + longPressDisable__________________________| |_________________________ + _ + _longPress ___________________________| |__________________________________ + + +......................................SINGLE CLICK.............................. + + __________ ______ + debounced ________| |_______________________________| |_____ + + poll ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ + + longPressPeriod <---------------> + doubleClickPeriod <-------------------------------------> + _ _ _ _ + _switched _________| |_______| |_____________________________| |____| |___ + _____ + singleClickDisable____________________________________________| |__________ + _ + _singleClick _______________________________________________| |______________ + + ******************************************************************************* + */ + +#include "avdweb_Switch.h" + +switchCallback_t Switch::_beepAllCallback = + nullptr; // definition static function pointer with typedef +void *Switch::_beepAllCallbackParam = nullptr; + +Switch::Switch(byte _pin, byte PinMode, bool polarity, + unsigned long debouncePeriod, unsigned long longPressPeriod, + unsigned long doubleClickPeriod, unsigned long deglitchPeriod) + : deglitchPeriod(deglitchPeriod), debouncePeriod(debouncePeriod), + longPressPeriod(longPressPeriod), doubleClickPeriod(doubleClickPeriod), + pin(_pin), polarity(polarity) { + pinMode(pin, PinMode); + switchedTime = millis(); + debounced = digitalRead(pin); + singleClickDisable = true; + poll(); +} + +bool Switch::poll() { + input = digitalRead(pin); + ms = millis(); + return process(); +} + +bool Switch::process() { + deglitch(); + debounce(); + calcSingleClick(); + calcDoubleClick(); + calcLongPress(); + if (switched()) { + switchedTime = ms; // stores last times for future rounds + if (pushed()) { + if (_beepAllCallback) + _beepAllCallback(_beepAllCallbackParam); + pushedTime = ms; + } else { + releasedTime = ms; + } + } + triggerCallbacks(); + return _switched; +} + +void inline Switch::deglitch() { + if (input == lastInput) + equal = 1; + else { + equal = 0; + deglitchTime = ms; + } + if (equal && + ((ms - deglitchTime) > deglitchPeriod)) // max 50ms, disable deglitch: 0ms + { + deglitched = input; + deglitchTime = ms; + } + lastInput = input; +} + +void inline Switch::debounce() { + _switched = 0; + if ((deglitched != debounced) && ((ms - switchedTime) > debouncePeriod)) { + debounced = deglitched; + _switched = 1; + } +} + +void inline Switch::calcSingleClick() { + _singleClick = false; + if (pushed()) { + if ((ms - pushedTime) >= doubleClickPeriod) { + singleClickDisable = + false; // resets when pushed not in second click of doubleclick + } else { + singleClickDisable = true; // silence single click in second cl. doublecl. + } + } + if (!singleClickDisable) { + _singleClick = !switched() && !on() && + ((releasedTime - pushedTime) <= longPressPeriod) && + ((ms - pushedTime) >= + doubleClickPeriod); // true just one time between polls + singleClickDisable = _singleClick; // will be reset at next push + } +} + +void inline Switch::calcDoubleClick() { + _doubleClick = pushed() && ((ms - pushedTime) < doubleClickPeriod); +} + +void inline Switch::calcLongPress() { + _longPress = false; + if (released()) + longPressDisable = false; // resets when released + if (!longPressDisable) { + _longPress = !switched() && on() && + ((ms - pushedTime) > + longPressPeriod); // true just one time between polls + longPressDisable = _longPress; // will be reset at next release + } +} + +bool Switch::switched() { return _switched; } + +bool Switch::on() { return !(debounced ^ polarity); } + +bool Switch::pushed() { return _switched && !(debounced ^ polarity); } + +bool Switch::released() { return _switched && (debounced ^ polarity); } + +bool Switch::longPress() { return _longPress; } + +bool Switch::doubleClick() { return _doubleClick; } + +bool Switch::singleClick() { return _singleClick; } + +void Switch::triggerCallbacks() { + if (_pushedCallback && pushed()) { + _pushedCallback(_pushedCallbackParam); + } else if (_releasedCallback && released()) { + _releasedCallback(_releasedCallbackParam); + } + + if (_longPressCallback && longPress()) { + _longPressCallback(_longPressCallbackParam); + } + + if (_doubleClickCallback && doubleClick()) { + _doubleClickCallback(_doubleClickCallbackParam); + } + + if (_singleClickCallback && singleClick()) { + _singleClickCallback(_singleClickCallbackParam); + } +} + +void Switch::setPushedCallback(switchCallback_t cb, void *param) { + _pushedCallback = cb; // Store the "pushed" callback function + _pushedCallbackParam = param; +} + +void Switch::setReleasedCallback(switchCallback_t cb, void *param) { + _releasedCallback = cb; // Store the "released" callback function + _releasedCallbackParam = param; +} + +void Switch::setLongPressCallback(switchCallback_t cb, void *param) { + _longPressCallback = cb; // Store the "long press" callback function + _longPressCallbackParam = param; +} + +void Switch::setDoubleClickCallback(switchCallback_t cb, void *param) { + _doubleClickCallback = cb; // Store the "double click" callback function + _doubleClickCallbackParam = param; +} + +void Switch::setSingleClickCallback(switchCallback_t cb, void *param) { + _singleClickCallback = cb; // Store the "double click" callback function + _singleClickCallbackParam = param; +} + +// void Switch::setBeepAllCallback(void(*cb)(void*), void* param) static +// function pointer without typedef +void Switch::setBeepAllCallback( + switchCallback_t cb, + void *param) // with static function pointer without typedef +{ + _beepAllCallback = cb; // Store the "beep" callback function + _beepAllCallbackParam = param; +} diff --git a/src/avdweb_Switch.h b/src/avdweb_Switch.h new file mode 100644 index 0000000..e4b002c --- /dev/null +++ b/src/avdweb_Switch.h @@ -0,0 +1,107 @@ +/** + * avdweb_Switch.h + * + * Switch - Arduino switch and button library with Short/Long Press, + * Double Click and Beep. + * =========================================================== + * + * Sources + * ------- + * https://github.com/avandalen/avdweb_Switch + * + * Website + * ------- + * http://www.avdweb.nl/arduino/hardware-interfacing/simple-switch-debouncer.html + * + * License + * -------- + * SPDX: GPL-3.0-or-later + * + * Switch - Arduino switch and button library with Short/Long Press, + * Double Click and Beep. + * Copyright (C) 2012-2024 Albert van Dalen + * Copyright (C) 2024 Abhijit Bose (aka. Boseji) :contributor: + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ + +#ifndef AVDWEB_SWITCH_H +#define AVDWEB_SWITCH_H + +#include + +typedef void (*switchCallback_t)(void *); + +class Switch { +public: + Switch(byte _pin, byte PinMode = INPUT_PULLUP, bool polarity = LOW, + unsigned long debouncePeriod = 50, unsigned long longPressPeriod = 300, + unsigned long doubleClickPeriod = 250, + unsigned long deglitchPeriod = 10); + bool poll(); // Returns 1 if switched + bool switched(); // will be refreshed by poll() + bool on(); + bool pushed(); // will be refreshed by poll() + bool released(); // will be refreshed by poll() + bool longPress(); // will be refreshed by poll() + bool doubleClick(); // will be refreshed by poll() + bool singleClick(); // will be refreshed by poll() + + // Set methods for event callbacks + void setPushedCallback(switchCallback_t cb, void *param = nullptr); + void setReleasedCallback(switchCallback_t cb, void *param = nullptr); + void setLongPressCallback(switchCallback_t cb, void *param = nullptr); + void setDoubleClickCallback(switchCallback_t cb, void *param = nullptr); + void setSingleClickCallback(switchCallback_t cb, void *param = nullptr); + void setBeepAllCallback(switchCallback_t cb, void *param = nullptr); + + unsigned long deglitchPeriod, debouncePeriod, longPressPeriod, + doubleClickPeriod; + +protected: + bool process(); // not inline, used in child class + void inline deglitch(); + void inline debounce(); + void inline calcLongPress(); + void inline calcDoubleClick(); + void inline calcSingleClick(); + void triggerCallbacks(); + + unsigned long deglitchTime, switchedTime, pushedTime, releasedTime, ms; + const byte pin; + const bool polarity; + bool input, lastInput, equal, deglitched, debounced, _switched, _longPress, + longPressDisable, _doubleClick, _singleClick, singleClickDisable; + + // Event callbacks + switchCallback_t _pushedCallback = nullptr; + switchCallback_t _releasedCallback = nullptr; + switchCallback_t _longPressCallback = nullptr; + switchCallback_t _doubleClickCallback = nullptr; + switchCallback_t _singleClickCallback = nullptr; + static switchCallback_t + _beepAllCallback; // static function pointer, can be used by all objects + // static switchCallback_t _beepAllCallback = nullptr; // gives error with + // SAMD21 static void(*_beepAllCallback)(void*) = nullptr; // static function + // pointer without typedef + + void *_pushedCallbackParam = nullptr; + void *_releasedCallbackParam = nullptr; + void *_longPressCallbackParam = nullptr; + void *_doubleClickCallbackParam = nullptr; + void *_singleClickCallbackParam = nullptr; + static void *_beepAllCallbackParam; // can be used by all objects + // static void* _beepAllCallbackParam = nullptr; // gives error with SAMD21 +}; +#endif