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RS-232 commands
The following table lists the available RS-232 commands:
•
-
A single carriage return character (hex 0x0D) terminates each command.
-
Invalid input, space and linefeed characters (hex 0x0A) are ignored.
RS-232 communication on the RS-232 terminal strip is:
•
-
115200 bps, 8 Bit, No Parity, 1 Stop bit.
<CR> symbols in the table below refer to a single carriage return character (0x0D)
•
"Invalid Command" is sent in response to invalid RS-232 commands.
•
Other possible responses
•
-
"ERR1" - Internal I2C error
-
"ERR2" - TX HPD read error.
-
"ERR3" - Chip Signature error
Command
Response
FW
FWx.y<CR>
CVx
CVx<CR>
DI
DIx<CR>
DIAx
DIAx<CR>
ESx
ESx<CR>
EL
EL OK<CR>
EL ERR<CR>
FD
FD<CR>
Hall Technologies
October 6, 2023
Function and Example
Returns the firmware version.
FW1.1<CR> -- X and Y represent the firmware version numbers. (V1.1)
Sets/Returns the HDMI Output video status
CV?<CR> -- Returns the current HDMI Output video status
CV1<CR> -- Enable HDMI Output video
CV0<CR> -- Disable HDMI Output video is OFF
Returns Digital Input Status
DI1<CR> -- Digital Input terminal is not grounded.
DI0<CR> -- Digital Input terminal is grounded.
Sets/Returns Digital Input Action
DIA?<CR> – Returns current Digital Input Action
DIA3<CR> -- HDMI Output Audio is muted when digital input is
grounded.
(Factory Default)
Where 'x' is one of the following:
-- No Action
0
-- Mute HDMI Output Video and Audio
1
-- Mute HDMI Output Video
2
-- Mute HDMI Output Audio
(Factory Default)
3
-- Mute Both External SPDIF and L/R Outputs
4
-- Mute External LR Output
5
-- Mute External SPDIF Output
6
– Mute HDMI TX Output
7
Sets/Returns the current EDID setting
ES?<CR> -- Returns the current EDID setting
ES1<CR>-- Pass-Thru EDID
(Factory Default)
ES0<CR> -- Emulated EDID
Learns the connected SINK to the selected EDID (LR or Multi)
EL OK<CR> -- The EDID learning process was completed EL
ERR<CR> -- The EDID learning process was not completed.
Failures can occur from:
No SINK attached
Attempting to learn while in EMULATED EDID mode
Attempting to learn while in AUDIO EDID Pass-Thru mode
Resets device to Factory Defaults Unit will
reboot
(Factory Default)
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