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PyMata-2.20
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مشاهده بیشترتوضیحات
A Python Protocol Abstraction Library For Arduino Firmata
| ویژگی | مقدار |
|---|---|
| سیستم عامل | OS Independent |
| نام فایل | PyMata-2.20 |
| نام | PyMata |
| نسخه کتابخانه | 2.20 |
| نگهدارنده | [] |
| ایمیل نگهدارنده | [] |
| نویسنده | Alan Yorinks |
| ایمیل نویسنده | MisterYsLab@gmail.com |
| آدرس صفحه اصلی | https://github.com/MrYsLab/PyMata |
| آدرس اینترنتی | https://pypi.org/project/PyMata/ |
| مجوز | - |
PyMata
======
PyMata is a high performance, multi-threaded, non-blocking Python client for the Firmata Protocol that supports
the complete StandardFirmata protocol.
A new version for Python 3.5, pymata_aio, can be found [here](https://github.com/MrYsLab/pymata-aio).
The API can be viewed on the [wiki](https://github.com/MrYsLab/PyMata/wiki).
## Major features
* __Implements the entire Firmata 2.4.1 protocol.__
* __Python 2.7+ and Python 3.4+__ compatibility through a shared code set. (If you are running Python 3.4 on Linux, please see note below).
* Easy to use and intuitive __API__. You can view the [PyMata API Documentation here](https://htmlpreview.github.io/?https://raw.githubusercontent.com/MrYsLab/PyMata/master/documentation/html/pymata.m.html) or view in the Documentation/html directory.
* Custom support for __stepper motors, Sonar Ping Devices (HC-SR04), Piezo devices and Rotary Encoders__.
* Requires the use of FirmataPlus for PyMata - installation instructions may be found [here](https://github.com/MrYsLab/PyMata/wiki/Installing-FirmataPlus).
* __Wiring diagrams__ are provided for all examples in the examples directory.
* Digial and Analog __Transient Signal Monitoring Via Data Latches:__
* They provide "one-shot" notification when either a digital or analog pin meets a user defined threshold.
* Analog latches compare each data change to a user specified value.
* Comparison operators are <, >, <= and >=
* Digital latches compare a data change to either a high or low, specified by the user.
* Latches can easily be re-armed to detect the next transient data change.
* Latches can be either manually read or a callback can be associated with a latch for immediate notification.
* Optional __callbacks__ provide asynchronous notification of data updates.
## Callbacks
Check out the example code on the [wiki](https://github.com/MrYsLab/PyMata/wiki).
* Digital input pins.
* Analog input pins.
* Encoder changes.
* I2C read data changes.
* SONAR (HC-SR04) distance changes.
* Analog latch condition achieved.
* Digital latch condition achieved.
* Callbacks return data reports in a single list format.
* Polling methods and callbacks are available simultaneously and can be used in a mixed polled/callback environment.
* Callbacks return data in a single list.
### The callback data return values
| Callback Type | List Element 0 | List Element 1 | List Element 2 | List Element 3 |
| ------------- | -------------- | -------------- | -------------- | -------------- |
| Analog| ANALOG MODE|Pin Number|Data Value|Not Applicable
| Digital|DIGITAL MODE|Pin Number|Data Value|Not Applicable
|I2C|I2C MODE|I2C Device Address|Data Value|Not Applicable
|Sonar|Trigger Pin|Distance in Centimeters|Not Applicable|Not Applicatble
| Encoder|Encoder MODE|Pin Number|Data Value|Not Applicable
| Latched Analog| LATCHED ANALOG MODE|Pin Number|Data Value|Time Stamp
| Latched Digital|LATCHED DIGITAL MODE|Pin Number|Data Value|Time Stamp
## Control-C Signal Handler
Below is a sample Control-C signal handler that can be added to a PyMata Application.
It suppresses exceptions being reported as a result of the user entering a Control-C to abort the application.
```python
import sys
import signal
# followed by another imports your application requires
# create a PyMata instance
# set the COM port string specifically for your platform
board = PyMata("/dev/ttyACM0")
# signal handler function called when Control-C occurs
def signal_handler(signal, frame):
print('You pressed Ctrl+C!!!!')
if board != None:
board.reset()
sys.exit(0)
# listen for SIGINT
signal.signal(signal.SIGINT, signal_handler)
# Your Application Continues Below This Point
```
## Misc
- Want to extend PyMata? See [Our Instructables Article](http://www.instructables.com/id/Going-Beyond-StandardFirmata-Adding-New-Device-Sup/) explaining how stepper motor support was added. Use it as a guide to customize PyMata for your own needs.
- [Check Out Mr. Y's Blog Here](http://mryslab.blogspot.com/) for all the latest news!
# Special Note For Linux Users Wishing to Use Python 3.5
# [pymata_aio is now available and for Python 3.5.](https://github.com/MrYsLab/pymata-aio)
# [Check out the pymata_aio wiki!](https://github.com/MrYsLab/pymata-aio/wiki)
This project was developed with [Pycharm](https://www.jetbrains.com/pycharm/) 
نیازمندی
| مقدار | نام |
|---|---|
| - | pyserial |
نحوه نصب
نصب پکیج whl PyMata-2.20:
pip install PyMata-2.20.whl
نصب پکیج tar.gz PyMata-2.20:
pip install PyMata-2.20.tar.gz