[capture] Unblock Husky USB communication after power-up

CW Husky often blocks USB communication after power-up. Initializing the scope twice seems to solve the problem. Resolves lowRISC#301 Signed-off-by: Vladimir Rozic <[email protected]>
vrozic · Jan 29, 2024 · 722811f · 722811f
1 parent 351e165
commit 722811f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/target/cw_fpga.py b/target/cw_fpga.py
@@ -76,6 +76,9 @@ def __init__(self, bitstream, force_programming, firmware, pll_frequency,
         # Note that the actual scope config for capturing traces is later
         # initialized.
         self.scope = cw.scope()
+        # Sometimes CW-Husky blocks USB communication after power cycling
+        # Initializing the scope twice seems to solve the problem.
+        self.scope = cw.scope()
 
         self.fpga = self.initialize_fpga(self.fpga_type, bitstream,
                                          force_programming, pll_frequency)