From: Tobias Weber <toweber86@gmail.com>
Date: Mon, 6 Nov 2017 13:34:44 +0000 (+0100)
Subject: correctly read back values from DACs.
X-Git-Url: https://jspc29.x-matter.uni-frankfurt.de/git/?a=commitdiff_plain;h=b42fe447aa254ff7bbd694e36fbae7ca6ff77d7f;p=trb3.git

correctly read back values from DACs.
---

diff --git a/mupix/Mupix8/sources/LTC1658SPI.vhd b/mupix/Mupix8/sources/LTC1658SPI.vhd
index 20a6df9..cde7e11 100644
--- a/mupix/Mupix8/sources/LTC1658SPI.vhd
+++ b/mupix/Mupix8/sources/LTC1658SPI.vhd
@@ -92,12 +92,12 @@ begin
 						if (clk_enable = '1') then
 							shiftregister_out(data_length - 1 downto 1) <= shiftregister_out(data_length - 2 downto 0);
 							shiftregister_out(0)                        <= '0';
+							shiftregister_in                            <= shiftregister_in(data_length - 2 downto 0) & spi_data_from_chip;
 							state                                       <= sendbit2;
 						end if;
 					when sendbit2 =>    --pull clock high
 						spi_clk <= '1';
 						if (clk_enable = '1') then
-							shiftregister_in <= shiftregister_in(data_length - 2 downto 0) & spi_data_from_chip;
 							if (wordcounter = data_length - 1) then -- we are done...
 								state <= loading1;
 							else