Version history

1.1

Now 2020

First Release

General:

The Fast shutter Controller is a Firmware for the PiLC to generate gate signals that is

synchronized with an external signal.

The gate signal can defined as follow:

Name	Task	Value
Control	Controlling the gate	0= Reset 1= Arm 2= Gate manually open
Gate Delay	Delay from the rising edge from the external signal and the rising edge from the gate	Time in us (32bit)
Gate High	High Time from the gate	Time in us (32bit)
Gate Low	Low Time from the gate	Time in us (32bit)
Gate Repletion	How often the gate should be repeat

Before you Arm the system the Gate Delay/High/Low and Repletion must be set. This setting must only set once.

Example: Make a Gate 2sec after the external rising edge, 2sec High Time, 2sec Low Time and repeat it 5 times.

Pyhton:

pilc.WriteFPGA([0x03,2000000]) #Delay

pilc.WriteFPGA([0x05,2000000]) # High time

pilc.WriteFPGA([0x07,2000000]) # Low Time

pilc.WriteFPGA([0x09,5]) # Repeat

After the gate defines a set. It is possible to set now the control to arm.

Pyhton:

pilc.WriteFPGA([0x01,1]) # Cntrl

When the Gates are produce and you want to start a new run you must reset the control

Pyhton:

pilc.WriteFPGA([0x01,0]) # Cntrl

Also you can stop the gate, when you reset the control.