[rtl] use past SDA in twd FSM transition

stnolting · Jan 21, 2025 · 78b2703 · 78b2703
1 parent 02d7b6b
commit 78b2703
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/rtl/core/neorv32_twd.vhd b/rtl/core/neorv32_twd.vhd
@@ -417,7 +417,7 @@ begin
           if (ctrl.enable = '0') or (smp.stop = '1') then -- disabled or stop-condition
             engine.state <= S_IDLE;
           elsif (smp.scl_fall = '1') then -- end of this time slot
-            if (engine.cmd = '0') or ((engine.cmd = '1') and (smp.sda = '0')) then -- WRITE or READ with ACK
+            if (engine.cmd = '0') or ((engine.cmd = '1') and (smp.sda_sreg(2) = '0')) then -- WRITE or READ with ACK (read sda "from the past")
               engine.state <= S_RTX;
             end if;
           end if;