Chain modules

Chain modules are utility blocks which can be used to build chained-triggers. Each chain module has 3 event inputs, and a trigger output. The trigger output is asserted when the 3 inputs have been sequentially triggered.

Warning

This module is still experimental and may be subject to changes.

Python API example

chain = scaffold.chain0
chain.event0 << scaffold.d0
chain.event1 << scaffold.d1
chain.event2 << 1  # Don't use this one

For more API documentation, see scaffold.Chain

Signals

Internal registers

chain0	0x0900
chain1	0x0910

base + 0x0000

control

W

control register

7	6	5	4	3	2	1	0
reserved							rearm

rearm

Write this bit to 1 to arm the chain trigger.