dsp/gc_iq_demodulator: sine should be 90 degrees after cosine

5180895a · Tomasz Wlostowski · 77dd0bd3 · 5180895a
Commit 5180895a authored Jul 20, 2022 by Tomasz Wlostowski
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gc_iq_demodulator.vhd modules/dsp/gc_iq_demodulator.vhd +2 -2

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--- a/modules/dsp/gc_iq_demodulator.vhd
+++ b/modules/dsp/gc_iq_demodulator.vhd
@@ -68,7 +68,7 @@ begin
          when S_PI2 =>
            state <= S_PI;
            iacc  <= (others => '0');
-            qacc  <= resize(signed(adc_data_i), g_N + 1);
+            qacc  <= resize(-signed(adc_data_i), g_N + 1);
          when S_PI =>
            state <= S_3PI2;
            iacc  <= resize(-signed(adc_data_i), g_N + 1);
@@ -76,7 +76,7 @@ begin
          when S_3PI2 =>
            state <= S_0;
            iacc  <= (others => '0');
-            qacc  <= resize(-signed(adc_data_i), g_N + 1);
+            qacc  <= resize(signed(adc_data_i), g_N + 1);
        end case;
      end if;
    end if;