cocotb/c4m_jtag: support trst_n to be None.

[c4m-jtag.git] / sim / cocotb / c4m_jtag.py

diff --git a/sim/cocotb/c4m_jtag.py b/sim/cocotb/c4m_jtag.py
index fe014f381182feacf050b22dbd55cb6785ce305d..1dd13b1ee0d1a0c3e47859421735bc27db5dd0a5 100644 (file)
--- 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