X-Git-Url: https://git.libre-soc.org/?p=c4m-jtag.git;a=blobdiff_plain;f=sim%2Fcocotb%2Fc4m_jtag.py;h=1dd13b1ee0d1a0c3e47859421735bc27db5dd0a5;hp=fe014f381182feacf050b22dbd55cb6785ce305d;hb=39348d09c3b71570d10251ed1124bc00539782a8;hpb=eb7100a9a5c02c468dcffc91b98918757084fc59

diff --git a/sim/cocotb/c4m_jtag.py b/sim/cocotb/c4m_jtag.py
index fe014f3..1dd13b1 100644
--- a/sim/cocotb/c4m_jtag.py
+++ b/sim/cocotb/c4m_jtag.py
@@ -44,7 +44,8 @@ class JTAG_Master(object):
         tdi <= 0
         self.tdo = tdo
         self.trst_n = trst_n
-        trst_n <= 1
+        if trst_n is not None:
+            trst_n <= 1
         self.period = Timer(clk_period)
 
         # Standard commands