LCD控制VHDL程序与仿真

文章摘要： data<="01000000";--40H current_state<=write_ cgram; when write_ cgram=> --向CGRAM中写入“年” lcdda<='1'; cnt1:=cnt1+1; data<=cgram(conv_integer(cnt1)); if cnt1 = "111" then current_state<=set_ddram

LCD控制VHDL程序与仿真,标签：fpga是什么,fpga教程,http://www.88dzw.com
        data<="01000000";--40H
        current_state<=write_ cgram;
      when write_ cgram=> --向CGRAM中写入“年”
        lcdda<='1';
        cnt1:=cnt1+1;
        data<=cgram(conv_integer(cnt1));       
        if cnt1 = "111" then
       current_state<=set_ddram;        
        end if;
     when set_ddram=>     --从第一行的起始地址开始显示
        data<="10000000";--80H
        current_state<=write_data;
              when write_data=>   
        lcdda<='1';
        data<="00000000"; --写入字符“年”
     when others => null;
    end case;
    end if;
          end process;
end Behavioral;

上一页  [1] [2]