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40 lines
1.3 KiB
Markdown
40 lines
1.3 KiB
Markdown
TinySoftPwm library
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===================
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**TinySoftPwm** is a library designed to generate PWM signals by software.
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Some examples of use cases:
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-------------------------
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* **RGB strip LED Controller**
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* **DC Motor controller**
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* **Digital to Analog converter**
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Supported Arduinos:
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------------------
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* **ATtiny85 (Standalone or Digispark)** (up to 6 software PWM supported)
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* **ATtiny167 (Digispark pro)** (up to 13 software PWM supported)
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API/methods:
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-----------
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* TinySoftPwm_begin()
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* TinySoftPwm_analogWrite()
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* TinySoftPwm_process()
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Design considerations:
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---------------------
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In order to reduce **program** and **RAM** memories, PWM pins shall be declared in the **TinySoftPwm.h** file. All the required amount of **program** and **RAM** memories are allocated at compilation time.
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The **TinySoftPwm_process()** method shall be called periodically:
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* using micros() in the loop(): in this case, asynchronous programmation shall be used: no call to blocking functions such as delay() is permitted.
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* or better using periodic interruption.
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In order to reduce the memory footprint (programm and RAM), try to use the PWM on pins which are part of the same port: PORTA or PORTB.
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Contact
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-------
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If you have some ideas of enhancement, please contact me by clicking on: [RC Navy](http://p.loussouarn.free.fr/contact.html).
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