1

# This is an nmigen delay line for ECP5 FPGAs using the open source toolchain. It strings together a series of

2

# manually placed carry chains into a "thermometer." It returns a signal that's (length) long that represents

3

# the chain "snapshotted" at the primary clock domain (using the flip flops colocated in the slice).

4

#

5

# This can be used in a Time to Digital Converter (i.e. to measure the time between to events) or in