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Update qlaser_dacs_pulse_channel.vhdl

This commit is contained in:
Eric Yu 2023-12-18 13:59:58 -08:00
parent 9664983050
commit bab8f1c0d8
1 changed files with 22 additions and 20 deletions
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42
src/hdl/modules/qlaser_dacs_pulse_channel.vhdl
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@ -286,10 +286,10 @@ begin
-- Output waveform from RAM , and increment the address -- Output waveform from RAM , and increment the address
-- TODO: apply scaling factor to the address and then to the output -- TODO: apply scaling factor to the address and then to the output
ram_waveform_addrb <= std_logic_vector(unsigned(ram_waveform_addrb) + 1); ram_waveform_addrb <= std_logic_vector(unsigned(ram_waveform_addrb) + 1);
sm_wavedata <= ram_waveform_doutb; end if;
sm_wavedata_dv <= '1'; sm_wavedata <= ram_waveform_doutb;
sm_wavedata_dv <= '1';
end if;
------------------------------------------------------------------------ ------------------------------------------------------------------------
-- Hold the last address and output its data -- Hold the last address and output its data
-- decrement from this address when finished waiting -- decrement from this address when finished waiting
@ -299,33 +299,35 @@ begin
sm_state <= S_WAVE_DOWN; sm_state <= S_WAVE_DOWN;
else else
cnt_wave_top <= std_logic_vector(unsigned(cnt_wave_top) + 1); cnt_wave_top <= std_logic_vector(unsigned(cnt_wave_top) + 1);
sm_wavedata <= ram_waveform_doutb; end if;
sm_wavedata_dv <= '1'; sm_wavedata <= ram_waveform_doutb;
end if; sm_wavedata_dv <= '1';
------------------------------------------------------------------------ ------------------------------------------------------------------------
-- Output the falling edge of a waveform -- Output the falling edge of a waveform
-- Hold the start address when complete -- Hold the start address when complete
------------------------------------------------------------------------ ------------------------------------------------------------------------
when S_WAVE_DOWN => when S_WAVE_DOWN =>
-- End of waveform? -- End of waveform?
if (ram_waveform_addrb = v_addr_start) then if (ram_waveform_addrb = v_addr_start) then
-- If the end of the pulse table is reached then go to idle -- If the end of the pulse table is reached then go to idle
if (ram_pulse_addrb = std_logic_vector(to_unsigned(C_NUM_PULSE-1,4))) then if (ram_pulse_addrb = std_logic_vector(to_unsigned(C_NUM_PULSE-1,4))) then
ram_pulse_addrb <= (others=>'0'); ram_pulse_addrb <= (others=>'0');
sm_state <= S_IDLE; sm_state <= S_IDLE;
else -- increment pulse address for the next waveform else -- increment pulse address for the next waveform
ram_pulse_addrb <= std_logic_vector(unsigned(ram_pulse_addrb) + 1); ram_pulse_addrb <= std_logic_vector(unsigned(ram_pulse_addrb) + 1);
sm_state <= S_WAIT; sm_state <= S_WAIT;
end if;
-- Output waveform from RAM with decremented address
else
ram_waveform_addrb <= std_logic_vector(unsigned(ram_waveform_addrb) - 1);
end if; end if;
-- Output waveform from RAM with decremented address
else
ram_waveform_addrb <= std_logic_vector(unsigned(ram_waveform_addrb) - 1);
sm_wavedata <= ram_waveform_doutb; sm_wavedata <= ram_waveform_doutb;
sm_wavedata_dv <= '1'; sm_wavedata_dv <= '1';
end if;
------------------------------------------------------------------------ ------------------------------------------------------------------------
-- Default -- Default