FPGA片内FIFO读写测试Verilog逻辑源码Quartus工程文件+文档说明，使用 FPGA 内部的 FIFO 以及程序对该 FIFO 的数据读写操作。FPGA型号Cyclone4E系列中的EP4CE6F17C8，Quartus版本17.1。 timescale 1ns / 1ps ////////////////////////////////////////////////////////////////////////////////// module fifo_test( input clk, //50MHz时钟 input rst_n //复位信号，低电平有效 ); //----------------------------------------------------------- localparam W_IDLE = 1; localparam W_FIFO = 2; localparam R_IDLE = 1; localparam R_FIFO = 2; reg[2:0] write_state; reg[2:0] next_write_state; reg[2:0] read_state; reg[2:0] next_read_state; reg[15:0] w_data; //FIFO写数据 wire wr_en; //FIFO写使能 wire rd_en; //FIFO读使能 wire[15:0] r_data; //FIFO读数据 wire full; //FIFO满信号 wire empty; //FIFO空信号 wire[8:0] rd_data_count; wire[8:0] wr_data_count; ///产生FIFO写入的数据 always@(posedge clk or negedge rst_n) begin if(rst_n == 1'b0) write_state <= W_IDLE; else write_state <= next_write_state; end always@(*) begin case(write_state) W_IDLE: if(empty == 1'b1) //FIFO空， 开始写FIFO next_write_state <= W_FIFO; else next_write_state <= W_IDLE; W_FIFO: if(full == 1'b1) //FIFO满 next_write_state <= W_IDLE; else next_write_state <= W_FIFO; default: next_write_state <= W_IDLE; endcase end assign wr_en = (next_write_state == W_FIFO) ? 1'b1 : 1'b0; always@(posedge clk or negedge rst_n) begin if(rst_n == 1'b0) w_data <= 16'd0; else if (wr_en == 1'b1) w_data <= w_data + 1'b1; else w_data <= 16'd0; end ///产生FIFO读的数据 always@(posedge clk or negedge rst_n) begin if(rst_n == 1'b0) read_state <= R_IDLE; else read_state <= next_read_state; end always@(*) begin case(read_state) R_IDLE: if(full == 1'b1) //FIFO满, 开始读FIFO next_read_state <= R_FIFO; else next_read_state <=