深入浅出FPGA-17-xilinx_zynq7000_EPP上一个简单实验(PS+PL)
引言
前面两个实验，PL是传统的FPGA开发，PS是传统的嵌入式开发。
zynq7000EPP是xilinx比较高端的FPGA开发板，XC7Z020内部集成了两个cortexa9的硬核，外部有1G的DDR3，所以单纯做FPGA太浪费了。但是单纯用PS资源，就没必要用FPGA了，所以只有将两者结合使用才能体现其价值所在。
即，PS+PL。添加自己的一个IP到AXI总线上，然后通过SDK编码控制它的寄存器，这就是本小节的实验内容。
17.1 实验目的
1》 熟悉zynq7000 EPP资源和design suite
2》 PL编码，PS编码，实现一个简单逻辑。
17.2 实验环境
Board ：ZYNQ7000 EPP
Device：XC7Z020CLG484ACX1221
Design suite：14.1 （PlanAhead+XPS+SDK）
17.3 实验准备
a) 会planAhead创建工程：ps_pl。
b) 简单了解和使用XPS和SDK
17.4 实验内容
a) 添加自己一个IP:rill_ip，挂到AXI上，此IP有一个output连到外部一个LED上。
b) 在SDK编写C代码控制这个IP的寄存器来控制此设备，进而控制LED的闪烁。
17.5 实验步骤
a) 打开planAhead，创建embedded新工程，添加PS7。
b) 打开XPS->hardware，添加自己的ip：rill_ip。
c) AXI4-lite.
d) 一个32位寄存器。
e) 生成driver。
f) 修改此IP的文件：MPD文件，rill_ip.vhd，user_logic.vhd。三个文件。
File:mpd,1个地方需要修改，如图：这3个文件的路径很深，不好找，截图上面有路径，方便很多。
可以根据截图找到对应位置，然后添加相应代码。
也可以参考附录代码。
File:rill_ip.vhd: 2个地方需要修改。
File:user_logic.vhd: 3个地方需要修改。
g) 将此ip添加到XPS工程。
h) 自动映射。注意port名称，ucf文件里要用。
i) 添加UCF文件，内容：ps_pl.ucf。
j) Create TOP HDL，然后生成bitstream。
k) 导出hardware，launch SDK。
l) 在SDK里创建helloword工程。
m) SDK编码，内容：helloworld.c。读写寄存器。
n) Program FPGA
o) Run AS,configure
p) Run
17.6 实验结果
看板子，DS18这个led会由亮变灭：串口也有打印。
,
附：
文件1：rill_ip_v2_1_0.mpd：
################################################################### ## ## Name : rill_ip ## Desc : Microprocessor Peripheral Description ## : Automatically generated by PsfUtility ## ################################################################### BEGIN rill_ip ## Peripheral Options OPTION IPTYPE = PERIPHERAL OPTION IMP_NETLIST = TRUE OPTION HDL = VHDL OPTION IP_GROUP = MICROBLAZE:USER OPTION DESC = RILL_IP OPTION ARCH_SUPPORT_MAP = (others=DEVELOPMENT) ## Bus Interfaces BUS_INTERFACE BUS = S_AXI, BUS_STD = AXI, BUS_TYPE = SLAVE ## Generics for VHDL or Parameters for Verilog PARAMETER C_S_AXI_DATA_WIDTH = 32, DT = INTEGER, BUS = S_AXI, ASSIGNMENT = CONSTANT PARAMETER C_S_AXI_ADDR_WIDTH = 32, DT = INTEGER, BUS = S_AXI, ASSIGNMENT = CONSTANT PARAMETER C_S_AXI_MIN_SIZE = 0x000001ff, DT = std_logic_vector, BUS = S_AXI PARAMETER C_USE_WSTRB = 0, DT = INTEGER PARAMETER C_DPHASE_TIMEOUT = 8, DT = INTEGER PARAMETER C_BASEADDR = 0xffffffff, DT = std_logic_vector, MIN_SIZE = 0x100, PAIR = C_HIGHADDR, ADDRESS = BASE, BUS = S_AXI PARAMETER C_HIGHADDR = 0x00000000, DT = std_logic_vector, PAIR = C_BASEADDR, ADDRESS = HIGH, BUS = S_AXI PARAMETER C_FAMILY = virtex6, DT = STRING PARAMETER C_NUM_REG = 1, DT = INTEGER PARAMETER C_NUM_MEM = 1, DT = INTEGER PARAMETER C_SLV_AWIDTH = 32, DT = INTEGER PARAMETER C_SLV_DWIDTH = 32, DT = INTEGER PARAMETER C_S_AXI_PROTOCOL = AXI4LITE, TYPE = NON_HDL, ASSIGNMENT = CONSTANT, DT = STRING, BUS = S_AXI ## Ports PORT led = "",DIR = O PORT S_AXI_ACLK = "", DIR = I, SIGIS = CLK, BUS = S_AXI PORT S_AXI_ARESETN = ARESETN, DIR = I, SIGIS = RST, BUS = S_AXI PORT S_AXI_AWADDR = AWADDR, DIR = I, VEC = [(C_S_AXI_ADDR_WIDTH-1):0], ENDIAN = LITTLE, BUS = S_AXI PORT S_AXI_AWVALID = AWVALID, DIR = I, BUS = S_AXI PORT S_AXI_WDATA = WDATA, DIR = I, VEC = [(C_S_AXI_DATA_WIDTH-1):0], ENDIAN = LITTLE, BUS = S_AXI PORT S_AXI_WSTRB = WSTRB, DIR = I, VEC = [((C_S_AXI_DATA_WIDTH/8)-1):0], ENDIAN = LITTLE, BUS = S_AXI PORT S_AXI_WVALID = WVALID, DIR = I, BUS = S_AXI PORT S_AXI_BREADY = BREADY, DIR = I, BUS = S_AXI PORT S_AXI_ARADDR = ARADDR, DIR = I, VEC = [(C_S_AXI_ADDR_WIDTH-1):0], ENDIAN = LITTLE, BUS = S_AXI PORT S_AXI_ARVALID = ARVALID, DIR = I, BUS = S_AXI PORT S_AXI_RREADY = RREADY, DIR = I, BUS = S_AXI PORT S_AXI_ARREADY = ARREADY, DIR = O, BUS = S_AXI PORT S_AXI_RDATA = RDATA, DIR = O, VEC = [(C_S_AXI_DATA_WIDTH-1):0], ENDIAN = LITTLE, BUS = S_AXI PORT S_AXI_RRESP = RRESP, DIR = O, VEC = [1:0], BUS = S_AXI PORT S_AXI_RVALID = RVALID, DIR = O, BUS = S_AXI PORT S_AXI_WREADY = WREADY, DIR = O, BUS = S_AXI PORT S_AXI_BRESP = BRESP, DIR = O, VEC = [1:0], BUS = S_AXI PORT S_AXI_BVALID = BVALID, DIR = O, BUS = S_AXI PORT S_AXI_AWREADY = AWREADY, DIR = O, BUS = S_AXI END
文件2：rill_ip.vhd
------------------------------------------------------------------------------
-- rill_ip.vhd - entity/architecture pair
------------------------------------------------------------------------------
-- IMPORTANT:
-- DO NOT MODIFY THIS FILE EXCEPT IN THE DESIGNATED SECTIONS.
--
-- SEARCH FOR --USER TO DETERMINE WHERE CHANGES ARE ALLOWED.
--
-- TYPICALLY, THE ONLY ACCEPTABLE CHANGES INVOLVE ADDING NEW
-- PORTS AND GENERICS THAT GET PASSED THROUGH TO THE INSTANTIATION
-- OF THE USER_LOGIC ENTITY.
------------------------------------------------------------------------------
--
-- ***************************************************************************
-- ** Copyright (c) 1995-2012 Xilinx, Inc. All rights reserved. **
-- ** **
-- ** Xilinx, Inc. **
-- ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" **
-- ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND **
-- ** SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE, **
-- ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, **
-- ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION **
-- ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT, **
-- ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE **
-- ** FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY **
-- ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE **
-- ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR **
-- ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF **
-- ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS **
-- ** FOR A PARTICULAR PURPOSE. **
-- ** **
-- ***************************************************************************
--
------------------------------------------------------------------------------
-- Filename: rill_ip.vhd
-- Version: 1.00.a
-- Description: Top level design, instantiates library components and user logic.
-- Date: Mon Nov 05 13:53:37 2012 (by Create and Import Peripheral Wizard)
-- VHDL Standard: VHDL'93
------------------------------------------------------------------------------
-- Naming Conventions:
-- active low signals: "*_n"
-- clock signals: "clk", "clk_div#", "clk_#x"
-- reset signals: "rst", "rst_n"
-- generics: "C_*"
-- user defined types: "*_TYPE"
-- state machine next state: "*_ns"
-- state machine current state: "*_cs"
-- combinatorial signals: "*_com"
-- pipelined or register delay signals: "*_d#"
-- counter signals: "*cnt*"
-- clock enable signals: "*_ce"
-- internal version of output port: "*_i"
-- device pins: "*_pin"
-- ports: "- Names begin with Uppercase"
-- processes: "*_PROCESS"
-- component instantiations: "<ENTITY_>I_<#|FUNC>"
------------------------------------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
library proc_common_v3_00_a;
use proc_common_v3_00_a.proc_common_pkg.all;
use proc_common_v3_00_a.ipif_pkg.all;
library axi_lite_ipif_v1_01_a;
use axi_lite_ipif_v1_01_a.axi_lite_ipif;
library rill_ip_v1_00_a;
use rill_ip_v1_00_a.user_logic;
------------------------------------------------------------------------------
-- Entity section
------------------------------------------------------------------------------
-- Definition of Generics:
-- C_S_AXI_DATA_WIDTH -- AXI4LITE slave: Data width
-- C_S_AXI_ADDR_WIDTH -- AXI4LITE slave: Address Width
-- C_S_AXI_MIN_SIZE -- AXI4LITE slave: Min Size
-- C_USE_WSTRB -- AXI4LITE slave: Write Strobe
-- C_DPHASE_TIMEOUT -- AXI4LITE slave: Data Phase Timeout
-- C_BASEADDR -- AXI4LITE slave: base address
-- C_HIGHADDR -- AXI4LITE slave: high address
-- C_FAMILY -- FPGA Family
-- C_NUM_REG -- Number of software accessible registers
-- C_NUM_MEM -- Number of address-ranges
-- C_SLV_AWIDTH -- Slave interface address bus width
-- C_SLV_DWIDTH -- Slave interface data bus width
--
-- Definition of Ports:
-- S_AXI_ACLK -- AXI4LITE slave: Clock
-- S_AXI_ARESETN -- AXI4LITE slave: Reset
-- S_AXI_AWADDR -- AXI4LITE slave: Write address
-- S_AXI_AWVALID -- AXI4LITE slave: Write address valid
-- S_AXI_WDATA -- AXI4LITE slave: Write data
-- S_AXI_WSTRB -- AXI4LITE slave: Write strobe
-- S_AXI_WVALID -- AXI4LITE slave: Write data valid
-- S_AXI_BREADY -- AXI4LITE slave: Response ready
-- S_AXI_ARADDR -- AXI4LITE slave: Read address
-- S_AXI_ARVALID -- AXI4LITE slave: Read address valid
-- S_AXI_RREADY -- AXI4LITE slave: Read data ready
-- S_AXI_ARREADY -- AXI4LITE slave: read addres ready
-- S_AXI_RDATA -- AXI4LITE slave: Read data
-- S_AXI_RRESP -- AXI4LITE slave: Read data response
-- S_AXI_RVALID -- AXI4LITE slave: Read data valid
-- S_AXI_WREADY -- AXI4LITE slave: Write data ready
-- S_AXI_BRESP -- AXI4LITE slave: Response
-- S_AXI_BVALID -- AXI4LITE slave: Resonse valid
-- S_AXI_AWREADY -- AXI4LITE slave: Wrte address ready
------------------------------------------------------------------------------
entity rill_ip is
generic
(
-- ADD USER GENERICS BELOW THIS LINE ---------------
--USER generics added here
-- ADD USER GENERICS ABOVE THIS LINE ---------------
-- DO NOT EDIT BELOW THIS LINE ---------------------
-- Bus protocol parameters, do not add to or delete
C_S_AXI_DATA_WIDTH : integer := 32;
C_S_AXI_ADDR_WIDTH : integer := 32;
C_S_AXI_MIN_SIZE : std_logic_vector := X"000001FF";
C_USE_WSTRB : integer := 0;
C_DPHASE_TIMEOUT : integer := 8;
C_BASEADDR : std_logic_vector := X"FFFFFFFF";
C_HIGHADDR : std_logic_vector := X"00000000";
C_FAMILY : string := "virtex6";
C_NUM_REG : integer := 1;
C_NUM_MEM : integer := 1;
C_SLV_AWIDTH : integer := 32;
C_SLV_DWIDTH : integer := 32
-- DO NOT EDIT ABOVE THIS LINE ---------------------
);
port
(
-- ADD USER PORTS BELOW THIS LINE ------------------
--USER ports added here
led : OUT std_logic;
-- ADD USER PORTS ABOVE THIS LINE ------------------
-- DO NOT EDIT BELOW THIS LINE ---------------------
-- Bus protocol ports, do not add to or delete
S_AXI_ACLK : in std_logic;
S_AXI_ARESETN : in std_logic;
S_AXI_AWADDR : in std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
S_AXI_AWVALID : in std_logic;
S_AXI_WDATA : in std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
S_AXI_WSTRB : in std_logic_vector((C_S_AXI_DATA_WIDTH/8)-1 downto 0);
S_AXI_WVALID : in std_logic;
S_AXI_BREADY : in std_logic;
S_AXI_ARADDR : in std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
S_AXI_ARVALID : in std_logic;
S_AXI_RREADY : in std_logic;
S_AXI_ARREADY : out std_logic;
S_AXI_RDATA : out std_logic_vector(C_S_AXI_DATA_WIDTH-1 downto 0);
S_AXI_RRESP : out std_logic_vector(1 downto 0);
S_AXI_RVALID : out std_logic;
S_AXI_WREADY : out std_logic;
S_AXI_BRESP : out std_logic_vector(1 downto 0);
S_AXI_BVALID : out std_logic;
S_AXI_AWREADY : out std_logic
-- DO NOT EDIT ABOVE THIS LINE ---------------------
);
attribute MAX_FANOUT : string;
attribute SIGIS : string;
attribute MAX_FANOUT of S_AXI_ACLK : signal is "10000";
attribute MAX_FANOUT of S_AXI_ARESETN : signal is "10000";
attribute SIGIS of S_AXI_ACLK : signal is "Clk";
attribute SIGIS of S_AXI_ARESETN : signal is "Rst";
end entity rill_ip;
------------------------------------------------------------------------------
-- Architecture section
------------------------------------------------------------------------------
architecture IMP of rill_ip is
constant USER_SLV_DWIDTH : integer := C_S_AXI_DATA_WIDTH;
constant IPIF_SLV_DWIDTH : integer := C_S_AXI_DATA_WIDTH;
constant ZERO_ADDR_PAD : std_logic_vector(0 to 31) := (others => '0');
constant USER_SLV_BASEADDR : std_logic_vector := C_BASEADDR;
constant USER_SLV_HIGHADDR : std_logic_vector := C_HIGHADDR;
constant IPIF_ARD_ADDR_RANGE_ARRAY : SLV64_ARRAY_TYPE :=
(
ZERO_ADDR_PAD & USER_SLV_BASEADDR, -- user logic slave space base address
ZERO_ADDR_PAD & USER_SLV_HIGHADDR -- user logic slave space high address
);
constant USER_SLV_NUM_REG : integer := 1;
constant USER_NUM_REG : integer := USER_SLV_NUM_REG;
constant TOTAL_IPIF_CE : integer := USER_NUM_REG;
constant IPIF_ARD_NUM_CE_ARRAY : INTEGER_ARRAY_TYPE :=
(
0 => (USER_SLV_NUM_REG) -- number of ce for user logic slave space
);
------------------------------------------
-- Index for CS/CE
------------------------------------------
constant USER_SLV_CS_INDEX : integer := 0;
constant USER_SLV_CE_INDEX : integer := calc_start_ce_index(IPIF_ARD_NUM_CE_ARRAY, USER_SLV_CS_INDEX);
constant USER_CE_INDEX : integer := USER_SLV_CE_INDEX;
------------------------------------------
-- IP Interconnect (IPIC) signal declarations
------------------------------------------
signal ipif_Bus2IP_Clk : std_logic;
signal ipif_Bus2IP_Resetn : std_logic;
signal ipif_Bus2IP_Addr : std_logic_vector(C_S_AXI_ADDR_WIDTH-1 downto 0);
signal ipif_Bus2IP_RNW : std_logic;
signal ipif_Bus2IP_BE : std_logic_vector(IPIF_SLV_DWIDTH/8-1 downto 0);
signal ipif_Bus2IP_CS : std_logic_vector((IPIF_ARD_ADDR_RANGE_ARRAY'LENGTH)/2-1 downto 0);
signal ipif_Bus2IP_RdCE : std_logic_vector(calc_num_ce(IPIF_ARD_NUM_CE_ARRAY)-1 downto 0);
signal ipif_Bus2IP_WrCE : std_logic_vector(calc_num_ce(IPIF_ARD_NUM_CE_ARRAY)-1 downto 0);
signal ipif_Bus2IP_Data : std_logic_vector(IPIF_SLV_DWIDTH-1 downto 0);
signal ipif_IP2Bus_WrAck : std_logic;
signal ipif_IP2Bus_RdAck : std_logic;
signal ipif_IP2Bus_Error : std_logic;
signal ipif_IP2Bus_Data : std_logic_vector(IPIF_SLV_DWIDTH-1 downto 0);
signal user_Bus2IP_RdCE : std_logic_vector(USER_NUM_REG-1 downto 0);
signal user_Bus2IP_WrCE : std_logic_vector(USER_NUM_REG-1 downto 0);
signal user_IP2Bus_Data : std_logic_vector(USER_SLV_DWIDTH-1 downto 0);
signal user_IP2Bus_RdAck : std_logic;
signal user_IP2Bus_WrAck : std_logic;
signal user_IP2Bus_Error : std_logic;
begin
------------------------------------------
-- instantiate axi_lite_ipif
------------------------------------------
AXI_LITE_IPIF_I : entity axi_lite_ipif_v1_01_a.axi_lite_ipif
generic map
(
C_S_AXI_DATA_WIDTH => IPIF_SLV_DWIDTH,
C_S_AXI_ADDR_WIDTH => C_S_AXI_ADDR_WIDTH,
C_S_AXI_MIN_SIZE => C_S_AXI_MIN_SIZE,
C_USE_WSTRB => C_USE_WSTRB,
C_DPHASE_TIMEOUT => C_DPHASE_TIMEOUT,
C_ARD_ADDR_RANGE_ARRAY => IPIF_ARD_ADDR_RANGE_ARRAY,
C_ARD_NUM_CE_ARRAY => IPIF_ARD_NUM_CE_ARRAY,
C_FAMILY => C_FAMILY
)
port map
(
S_AXI_ACLK => S_AXI_ACLK,
S_AXI_ARESETN => S_AXI_ARESETN,
S_AXI_AWADDR => S_AXI_AWADDR,
S_AXI_AWVALID => S_AXI_AWVALID,
S_AXI_WDATA => S_AXI_WDATA,
S_AXI_WSTRB => S_AXI_WSTRB,
S_AXI_WVALID => S_AXI_WVALID,
S_AXI_BREADY => S_AXI_BREADY,
S_AXI_ARADDR => S_AXI_ARADDR,
S_AXI_ARVALID => S_AXI_ARVALID,
S_AXI_RREADY => S_AXI_RREADY,
S_AXI_ARREADY => S_AXI_ARREADY,
S_AXI_RDATA => S_AXI_RDATA,
S_AXI_RRESP => S_AXI_RRESP,
S_AXI_RVALID => S_AXI_RVALID,
S_AXI_WREADY => S_AXI_WREADY,
S_AXI_BRESP => S_AXI_BRESP,
S_AXI_BVALID => S_AXI_BVALID,
S_AXI_AWREADY => S_AXI_AWREADY,
Bus2IP_Clk => ipif_Bus2IP_Clk,
Bus2IP_Resetn => ipif_Bus2IP_Resetn,
Bus2IP_Addr => ipif_Bus2IP_Addr,
Bus2IP_RNW => ipif_Bus2IP_RNW,
Bus2IP_BE => ipif_Bus2IP_BE,
Bus2IP_CS => ipif_Bus2IP_CS,
Bus2IP_RdCE => ipif_Bus2IP_RdCE,
Bus2IP_WrCE => ipif_Bus2IP_WrCE,
Bus2IP_Data => ipif_Bus2IP_Data,
IP2Bus_WrAck => ipif_IP2Bus_WrAck,
IP2Bus_RdAck => ipif_IP2Bus_RdAck,
IP2Bus_Error => ipif_IP2Bus_Error,
IP2Bus_Data => ipif_IP2Bus_Data
);
------------------------------------------
-- instantiate User Logic
------------------------------------------
USER_LOGIC_I : entity rill_ip_v1_00_a.user_logic
generic map
(
-- MAP USER GENERICS BELOW THIS LINE ---------------
--USER generics mapped here
-- MAP USER GENERICS ABOVE THIS LINE ---------------
C_NUM_REG => USER_NUM_REG,
C_SLV_DWIDTH => USER_SLV_DWIDTH
)
port map
(
-- MAP USER PORTS BELOW THIS LINE ------------------
--USER ports mapped here
led => led,
-- MAP USER PORTS ABOVE THIS LINE ------------------
Bus2IP_Clk => ipif_Bus2IP_Clk,
Bus2IP_Resetn => ipif_Bus2IP_Resetn,
Bus2IP_Data => ipif_Bus2IP_Data,
Bus2IP_BE => ipif_Bus2IP_BE,
Bus2IP_RdCE => user_Bus2IP_RdCE,
Bus2IP_WrCE => user_Bus2IP_WrCE,
IP2Bus_Data => user_IP2Bus_Data,
IP2Bus_RdAck => user_IP2Bus_RdAck,
IP2Bus_WrAck => user_IP2Bus_WrAck,
IP2Bus_Error => user_IP2Bus_Error
);
------------------------------------------
-- connect internal signals
------------------------------------------
ipif_IP2Bus_Data <= user_IP2Bus_Data;
ipif_IP2Bus_WrAck <= user_IP2Bus_WrAck;
ipif_IP2Bus_RdAck <= user_IP2Bus_RdAck;
ipif_IP2Bus_Error <= user_IP2Bus_Error;
user_Bus2IP_RdCE <= ipif_Bus2IP_RdCE(USER_NUM_REG-1 downto 0);
user_Bus2IP_WrCE <= ipif_Bus2IP_WrCE(USER_NUM_REG-1 downto 0);
end IMP;
文件3：user_logic.vhd
------------------------------------------------------------------------------
-- user_logic.vhd - entity/architecture pair
------------------------------------------------------------------------------
--
-- ***************************************************************************
-- ** Copyright (c) 1995-2012 Xilinx, Inc. All rights reserved. **
-- ** **
-- ** Xilinx, Inc. **
-- ** XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" **
-- ** AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND **
-- ** SOLUTIONS FOR XILINX DEVICES. BY PROVIDING THIS DESIGN, CODE, **
-- ** OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, **
-- ** APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION **
-- ** THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT, **
-- ** AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE **
-- ** FOR YOUR IMPLEMENTATION. XILINX EXPRESSLY DISCLAIMS ANY **
-- ** WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE **
-- ** IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR **
-- ** REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF **
-- ** INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS **
-- ** FOR A PARTICULAR PURPOSE. **
-- ** **
-- ***************************************************************************
--
------------------------------------------------------------------------------
-- Filename: user_logic.vhd
-- Version: 1.00.a
-- Description: User logic.
-- Date: Mon Nov 05 13:53:37 2012 (by Create and Import Peripheral Wizard)
-- VHDL Standard: VHDL'93
------------------------------------------------------------------------------
-- Naming Conventions:
-- active low signals: "*_n"
-- clock signals: "clk", "clk_div#", "clk_#x"
-- reset signals: "rst", "rst_n"
-- generics: "C_*"
-- user defined types: "*_TYPE"
-- state machine next state: "*_ns"
-- state machine current state: "*_cs"
-- combinatorial signals: "*_com"
-- pipelined or register delay signals: "*_d#"
-- counter signals: "*cnt*"
-- clock enable signals: "*_ce"
-- internal version of output port: "*_i"
-- device pins: "*_pin"
-- ports: "- Names begin with Uppercase"
-- processes: "*_PROCESS"
-- component instantiations: "<ENTITY_>I_<#|FUNC>"
------------------------------------------------------------------------------
-- DO NOT EDIT BELOW THIS LINE --------------------
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
library proc_common_v3_00_a;
use proc_common_v3_00_a.proc_common_pkg.all;
-- DO NOT EDIT ABOVE THIS LINE --------------------
--USER libraries added here
------------------------------------------------------------------------------
-- Entity section
------------------------------------------------------------------------------
-- Definition of Generics:
-- C_NUM_REG -- Number of software accessible registers
-- C_SLV_DWIDTH -- Slave interface data bus width
--
-- Definition of Ports:
-- Bus2IP_Clk -- Bus to IP clock
-- Bus2IP_Resetn -- Bus to IP reset
-- Bus2IP_Data -- Bus to IP data bus
-- Bus2IP_BE -- Bus to IP byte enables
-- Bus2IP_RdCE -- Bus to IP read chip enable
-- Bus2IP_WrCE -- Bus to IP write chip enable
-- IP2Bus_Data -- IP to Bus data bus
-- IP2Bus_RdAck -- IP to Bus read transfer acknowledgement
-- IP2Bus_WrAck -- IP to Bus write transfer acknowledgement
-- IP2Bus_Error -- IP to Bus error response
------------------------------------------------------------------------------
entity user_logic is
generic
(
-- ADD USER GENERICS BELOW THIS LINE ---------------
--USER generics added here
-- ADD USER GENERICS ABOVE THIS LINE ---------------
-- DO NOT EDIT BELOW THIS LINE ---------------------
-- Bus protocol parameters, do not add to or delete
C_NUM_REG : integer := 1;
C_SLV_DWIDTH : integer := 32
-- DO NOT EDIT ABOVE THIS LINE ---------------------
);
port
(
-- ADD USER PORTS BELOW THIS LINE ------------------
--USER ports added here
led : out std_logic;
-- ADD USER PORTS ABOVE THIS LINE ------------------
-- DO NOT EDIT BELOW THIS LINE ---------------------
-- Bus protocol ports, do not add to or delete
Bus2IP_Clk : in std_logic;
Bus2IP_Resetn : in std_logic;
Bus2IP_Data : in std_logic_vector(C_SLV_DWIDTH-1 downto 0);
Bus2IP_BE : in std_logic_vector(C_SLV_DWIDTH/8-1 downto 0);
Bus2IP_RdCE : in std_logic_vector(C_NUM_REG-1 downto 0);
Bus2IP_WrCE : in std_logic_vector(C_NUM_REG-1 downto 0);
IP2Bus_Data : out std_logic_vector(C_SLV_DWIDTH-1 downto 0);
IP2Bus_RdAck : out std_logic;
IP2Bus_WrAck : out std_logic;
IP2Bus_Error : out std_logic
-- DO NOT EDIT ABOVE THIS LINE ---------------------
);
attribute MAX_FANOUT : string;
attribute SIGIS : string;
attribute SIGIS of Bus2IP_Clk : signal is "CLK";
attribute SIGIS of Bus2IP_Resetn : signal is "RST";
end entity user_logic;
------------------------------------------------------------------------------
-- Architecture section
------------------------------------------------------------------------------
architecture IMP of user_logic is
--USER signal declarations added here, as needed for user logic
signal led_i : std_logic;
------------------------------------------
-- Signals for user logic slave model s/w accessible register example
------------------------------------------
signal slv_reg0 : std_logic_vector(C_SLV_DWIDTH-1 downto 0);
signal slv_reg_write_sel : std_logic_vector(0 to 0);
signal slv_reg_read_sel : std_logic_vector(0 to 0);
signal slv_ip2bus_data : std_logic_vector(C_SLV_DWIDTH-1 downto 0);
signal slv_read_ack : std_logic;
signal slv_write_ack : std_logic;
begin
--USER logic implementation added here
led_PROC : process (Bus2IP_Clk) is
begin
if Bus2IP_WrCE(0) = '1' then
led_i <= '1';
else
led_i <= '0';
end if;
end process led_PROC;
led <= led_i;
------------------------------------------
-- Example code to read/write user logic slave model s/w accessible registers
--
-- Note:
-- The example code presented here is to show you one way of reading/writing
-- software accessible registers implemented in the user logic slave model.
-- Each bit of the Bus2IP_WrCE/Bus2IP_RdCE signals is configured to correspond
-- to one software accessible register by the top level template. For example,
-- if you have four 32 bit software accessible registers in the user logic,
-- you are basically operating on the following memory mapped registers:
--
-- Bus2IP_WrCE/Bus2IP_RdCE Memory Mapped Register
-- "1000" C_BASEADDR + 0x0
-- "0100" C_BASEADDR + 0x4
-- "0010" C_BASEADDR + 0x8
-- "0001" C_BASEADDR + 0xC
--
------------------------------------------
slv_reg_write_sel <= Bus2IP_WrCE(0 downto 0);
slv_reg_read_sel <= Bus2IP_RdCE(0 downto 0);
slv_write_ack <= Bus2IP_WrCE(0);
slv_read_ack <= Bus2IP_RdCE(0);
-- implement slave model software accessible register(s)
SLAVE_REG_WRITE_PROC : process( Bus2IP_Clk ) is
begin
if Bus2IP_Clk'event and Bus2IP_Clk = '1' then
if Bus2IP_Resetn = '0' then
slv_reg0 <= (others => '0');
else
case slv_reg_write_sel is
when "1" =>
for byte_index in 0 to (C_SLV_DWIDTH/8)-1 loop
if ( Bus2IP_BE(byte_index) = '1' ) then
slv_reg0(byte_index*8+7 downto byte_index*8) <= Bus2IP_Data(byte_index*8+7 downto byte_index*8);
end if;
end loop;
when others => null;
end case;
end if;
end if;
end process SLAVE_REG_WRITE_PROC;
-- implement slave model software accessible register(s) read mux
SLAVE_REG_READ_PROC : process( slv_reg_read_sel, slv_reg0 ) is
begin
case slv_reg_read_sel is
when "1" => slv_ip2bus_data <= slv_reg0;
when others => slv_ip2bus_data <= (others => '0');
end case;
end process SLAVE_REG_READ_PROC;
------------------------------------------
-- Example code to drive IP to Bus signals
------------------------------------------
IP2Bus_Data <= slv_ip2bus_data when slv_read_ack = '1' else
(others => '0');
IP2Bus_WrAck <= slv_write_ack;
IP2Bus_RdAck <= slv_read_ack;
IP2Bus_Error <= '0';
end IMP;
文件4：UCF文件
NET rill_ip_0_led_pin IOSTANDARD=LVCMOS25 | LOC=V7;
文件5：SDK编码
/*
* Copyright (c) 2009 Xilinx, Inc. All rights reserved.
*
* Xilinx, Inc.
* XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS" AS A
* COURTESY TO YOU. BY PROVIDING THIS DESIGN, CODE, OR INFORMATION AS
* ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE, APPLICATION OR
* STANDARD, XILINX IS MAKING NO REPRESENTATION THAT THIS IMPLEMENTATION
* IS FREE FROM ANY CLAIMS OF INFRINGEMENT, AND YOU ARE RESPONSIBLE
* FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE FOR YOUR IMPLEMENTATION.
* XILINX EXPRESSLY DISCLAIMS ANY WARRANTY WHATSOEVER WITH RESPECT TO
* THE ADEQUACY OF THE IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO
* ANY WARRANTIES OR REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE
* FROM CLAIMS OF INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE.
*
*/
/*
* helloworld.c: simple test application
*/
#include <stdio.h>
#include "platform.h"
#include "../../hello_world_bsp_0/ps7_cortexa9_0/include/xgpiops_hw.h"
#include "../../hello_world_bsp_0/ps7_cortexa9_0/include/xparameters.h"
#define LED_BASE_ADDR XPAR_RILL_IP_0_BASEADDR
void my_process(void);
int main()
{
init_platform();
my_process();
cleanup_platform();
return 0;
}
void my_process(void)
{
int ret = 0;
printf("my_process start...");
ret = XGpioPs_ReadReg(LED_BASE_ADDR, 0);
printf("read0 :%d\n\n",ret);
XGpioPs_WriteReg(LED_BASE_ADDR, 0, 0);
ret = XGpioPs_ReadReg(LED_BASE_ADDR, 0);
printf("read1 :%d\n\n",ret);
XGpioPs_WriteReg(LED_BASE_ADDR, 0, 1);
ret = XGpioPs_ReadReg(LED_BASE_ADDR, 0);
printf("read2 :%d\n\n",ret);
}
/************ EOF *************/
总结
这三个实验包含了高端FPGA的主要的三种开发方式。也是典型的使用方式。这三个小实验搞明白了的话，就算入门了吧。
再进一步的话，只不过是逻辑复杂些，代码量多一些。这就需要其他方面的知识和技能了。