Rv8 Parameter Notification By Id (Rv8) - Lexicon RV8 V1.0 - SERIAL COMMUNICATIONS PROTOCOL DEFINITION REV 1-7 Manual

Lexicon, Inc.
RV-8 Serial Communications Protocol
7.1.3 Front Panel Display
RV8 will transmit the front panel display buffer following the update to the RV8 front panel display. The
RV8 front panel display is 2 X 20 ASCII character display. The HOST can enable transmission of this
notification message by sending Host Wakeup (7.3.29). To disable transmission the HOST can send Host
Sleep (7.3.30). Transmission of the display buffer is asynchronous to other host/RV8 communication and
will only transmit following the completion of any communication exchanges in progress or pending.
7.1.3.1 Notification Packet Description
Application Header:
Command
Data Count
Application Data:
Data[0] - Data[20]
Data[21] - Data[41]
7.1.3.2 Data Description
Line1
Data Type:
Max Length:
Line2
Data Type:
Max Length:
The RV8 includes 8 custom characters that are defined to display increments of a display block. (i.e.
Volume Bar) The custom characters are ASCII character codes 8E - 93(hex). The codes are used as
follows:
'8E' - empty cell
'8F' - left 1 bar
'90' - left 2 bars
'91' - left 3 bars
'92' - left 4 bars
'93' - full cell
7.1.3.3 HOST Response
The RV8 does not expect any response from the HOST.
7.1.4 RV8 Parameter Notification by Id
RV8 will transmit parameter change notifications if they are enabled using the command described in
(MC12_Set_Parameter_Notification_By_Id). If a parameter value is changed due to any user action or
system action the RV8 will transmit the current value of the parameter that is changing.
© 2004 Lexicon, Inc. All rights reserved.
DC_FPD
42
Line1
Line2
Null (0x00) terminated ASCII character string.
DISP_LINE_LENGTH defined in
Null (0x00) terminated ASCII character string.
DISP_LINE_LENGTH defined in
Printed on: 01/18/05
0x03
0x2A
ch ch ch... 0x00
ch ch ch ... 0x00
Appendix G Protocol Constants.
Appendix G Protocol Constants.
7.3.42
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