Project

General

Profile

Feature #884

UART protocol between front panel board and digital board.

Added by tin over 6 years ago. Updated about 5 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Target version:
Start date:
12/28/2013
Due date:
% Done:

0%

Estimated time:

Description

All display and key data transfer between CPU and front panel board is done by UART interface

Captured log example attached.
Display data transfered in ASCII + control bytes for blinking/special segments, etc.

R603,R604 on signal lines was probed with CP2103 USB-UART bridge
Settings: 8N1 9600 baudrate

Easy to use for custom application if perform full decode for protocol.

Requirement for front-panel board and VFD:

  • +5.5VAC with center tap for filament
  • +60 VDC for segment drive
  • +5VDC for controller and logic
  • 4MHz clock
  • System reset signal line

Files

display_pattern_test (28.1 KB) display_pattern_test tin, 12/28/2013 07:11 PM
#1

Updated by tin almost 6 years ago

  • Target version changed from Keithley 2001 #7 to Keithley 2001 #6
#2

Updated by tin about 5 years ago

  • Status changed from Resolved to Closed

Also available in: Atom PDF