hds_821pr

Sometimes you get lucky. Sometimes you find a generic (cheap) device that does what you need. Sometimes it even has a manual... and sometimes you have to run a sketchy control program and sniff communications.

The unit I purchased has the following title on Amazon: TNP HDMI 2x1 Multi-Viewer Switch Seamless Switcher w/ PIP Function Support HDMI 1.3a Full HD 1080P IR Remote Control Scaler UP/Down 4 Picture Mode 2 Input 1 Output RS232 Cable Included

It's hard to tell you where exactly to get your own. youting-hd seems to have the most pictures referenced. The control programs I've found all reference HDS-821PR so this package continues that trend.

Import the package

import hds_821pr

There are 2 ways to control this device, so I wrote both ways into this package. See the documentation for HDS-821PR Serial Commands - HEX Values - ASCII. To instantiate, pass in a string containing the name of the serial device.

pip = hds_821pr.Hex('COM4')

pip = hds_821pr.Ascii('/dev/ttyS0')

Functions and valid inputs:

To make things easier, I added some constants, or you can use the values directly.

set_port()
hds-821pr.ports.port_1 = '1'
hds-821pr.ports.port_2 = '2'

set_mode()
hds-821pr.modes.single = 'single'
hds-821pr.modes.pip = 'pip'
hds-821pr.modes.side_full = 'side_full'
hds-821pr.modes.side_scale = 'side_scale'

set_pip_size()
hds-821pr.pip_sizes.small = 'small'
hds-821pr.pip_sizes.medium = 'medium'
hds-821pr.pip_sizes.large = 'large'

set_pip_position()
hds-821pr.pip_positions.top_left = 'top_left'
hds-821pr.pip_positions.top_right = 'top_right'
hds-821pr.pip_positions.bottom_left = 'bottom_left'
hds-821pr.pip_positions.bottom_right = 'bottom_right'

set_pip_border()
hds-821pr.pip_borders.show = 'show'
hds-821pr.pip_borders.hide = 'hide'

set_resolution()
hds-821pr.resolutions.res_1080p = '1080p'
hds-821pr.resolutions.res_720p = '720p'
hds-821pr.resolutions.res_1080i = '1080i'
hds-821pr.resolutions.res_1024x768 = '1024x768'
hds-821pr.resolutions.res_1360x768 = '1360x768'

Example

import hds_821pr
import logging

logging.basicConfig(level=logging.DEBUG)

pip = hds_821pr.Hex('COM4')

pip.reset()
pip.set_port(hds_821pr.ports.port_1)
pip.set_pip_size(hds_821pr.pip_sizes.large)
pip.set_pip_position(hds_821pr.pip_positions.top_right)
pip.set_pip_border(hds_821pr.pip_borders.hide)
pip.set_mode(hds_821pr.modes.pip)

print(pip.get_resolution())
print(pip.get_port())
print(pip.get_mode())
print(pip.get_pip_position())
print(pip.get_pip_size())
print(pip.get_pip_border())

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