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serialdata/ref/README@c850674a3101

serialdata/ref/README

Sun, 01 Nov 2020 22:16:33 +0100

author

David Douard <david.douard@sdf3.org>

date

Sun, 01 Nov 2020 22:16:33 +0100

changeset 43

c850674a3101

permissions

-rw-r--r--

Add a series of reference serial data sessions from a working 34970A unit.

These sessions do have a few glitches, however (random off by one bit,
probably due to a sampling freq a bit too low).

Comes with an adapted version of the uart_filter.py script to interpret the
communication protocol.

Sessions of UART capture of the reference HP34970A unit.

In these capture frames:
- RX: FP -> CPU
- TX: CPU -> FP

Example extraction of data:

  sigrok-cli -i startup-no-key -P uart:baudrate=187500:parity=even:rx=RX:tx=TX \
             --channels RX,TX  -A uart=rx-data:tx-data:rx-start

Start-bit: following code is a RX, so generated by the FP.