start gpio

06-07-08-09-SystemOnChip/AhbLiteComponents/hdl/ahbGpio_studentVersion.vhd

@@ -17,17 +17,46 @@
 -- Read registers
 -- 00, data register provides the values detected on the lines.
 --
+signal addresses is unsigned(32 downto 0);
+signal bRead is std_ulogic;
+signal bWrite is std_ulogic;
+
 ARCHITECTURE studentVersion OF ahbGpio IS
 BEGIN
 
+  process(hReset_n, hClk) begin
+    if hReset_n = '1' then
+      -- AHB-Lite
+      hRData  <=  (OTHERS => '0');
+      hReady  <=  '0';  
+      hResp   <=  '0';  
+
+      -- Out
+      ioOut <= (OTHERS => '0');
+      ioEn  <= (OTHERS => '0');
+
+      addresses  <=  (OTHERS => '0');
+      bRead <= '0';
+      bWrite <= '1';
+    elsif rising_edge(hClk) then
+      if hSel = '1' then
+        CASE hAddr is
+          WHEN 00 =>
+          WHEN 01 =>
+          WHEN OTHERS
+        end CASE;
+      end if;
+    end if;
+  end process;
+
   -- AHB-Lite
-  hRData  <=	(OTHERS => '0');
-  hReady  <=	'0';	
-  hResp	  <=	'0';	
+--  hRData  <=	(OTHERS => '0');
+--  hReady  <=	'0';	
+--  hResp	  <=	'0';	
 
   -- Out
-  ioOut <= (OTHERS => '0');
-  ioEn  <= (OTHERS => '0');
+--  ioOut <= (OTHERS => '0');
+--  ioEn  <= (OTHERS => '0');
 
 END ARCHITECTURE studentVersion;
 

06-07-08-09-SystemOnChip/AhbLiteComponents/hdl/ahbgpio_entity.vhg

@@ -0,0 +1,38 @@
+-- VHDL Entity AhbLiteComponents.ahbGpio.symbol
+--
+-- Created:
+--          by - remi.heredero.UNKNOWN (WE2330808)
+--          at - 15:08:33 23.02.2024
+--
+-- Generated by Mentor Graphics' HDL Designer(TM) 2019.2 (Build 5)
+--
+LIBRARY ieee;
+  USE ieee.std_logic_1164.all;
+  USE ieee.numeric_std.all;
+LIBRARY AhbLite;
+  USE AhbLite.ahbLite.all;
+
+ENTITY ahbGpio IS
+    GENERIC( 
+        ioNb : positive := 8
+    );
+    PORT( 
+        hAddr    : IN     unsigned ( ahbAddressBitNb-1 DOWNTO 0 );
+        hClk     : IN     std_uLogic;
+        hReset_n : IN     std_uLogic;
+        hSel     : IN     std_uLogic;
+        hTrans   : IN     std_ulogic_vector (ahbTransBitNb-1 DOWNTO 0);
+        hWData   : IN     std_ulogic_vector (ahbDataBitNb-1 DOWNTO 0);
+        hWrite   : IN     std_uLogic;
+        ioIn     : IN     std_ulogic_vector (ioNb-1 DOWNTO 0);
+        hRData   : OUT    std_ulogic_vector (ahbDataBitNb-1 DOWNTO 0);
+        hReady   : OUT    std_uLogic;
+        hResp    : OUT    std_uLogic;
+        ioEn     : OUT    std_ulogic_vector (ioNb-1 DOWNTO 0);
+        ioOut    : OUT    std_ulogic_vector (ioNb-1 DOWNTO 0)
+    );
+
+-- Declarations
+
+END ahbGpio ;
+