| //////////////////////////////////////////////////////////////////////////// |
| // SPDX-FileCopyrightText: 2021 , Dinesh Annayya |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // SPDX-License-Identifier: Apache-2.0 |
| // SPDX-FileContributor: Modified by Dinesh Annayya <dinesha@opencores.org> |
| ////////////////////////////////////////////////////////////////////// |
| //// //// |
| //// Standalone User validation Test bench //// |
| //// //// |
| //// This file is part of the YIFive cores project //// |
| //// https://github.com/dineshannayya/yifive_r0.git //// |
| //// //// |
| //// Description //// |
| //// This is a standalone test bench to validate the //// |
| //// i2c Master . //// |
| //// //// |
| //// To Do: //// |
| //// nothing //// |
| //// //// |
| //// Author(s): //// |
| //// - Dinesh Annayya, dinesha@opencores.org //// |
| //// //// |
| //// Revision : //// |
| //// 0.1 - 16th Feb 2021, Dinesh A //// |
| //// //// |
| ////////////////////////////////////////////////////////////////////// |
| //// //// |
| //// Copyright (C) 2000 Authors and OPENCORES.ORG //// |
| //// //// |
| //// This source file may be used and distributed without //// |
| //// restriction provided that this copyright statement is not //// |
| //// removed from the file and that any derivative work contains //// |
| //// the original copyright notice and the associated disclaimer. //// |
| //// //// |
| //// This source file is free software; you can redistribute it //// |
| //// and/or modify it under the terms of the GNU Lesser General //// |
| //// Public License as published by the Free Software Foundation; //// |
| //// either version 2.1 of the License, or (at your option) any //// |
| //// later version. //// |
| //// //// |
| //// This source is distributed in the hope that it will be //// |
| //// useful, but WITHOUT ANY WARRANTY; without even the implied //// |
| //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //// |
| //// PURPOSE. See the GNU Lesser General Public License for more //// |
| //// details. //// |
| //// //// |
| //// You should have received a copy of the GNU Lesser General //// |
| //// Public License along with this source; if not, download it //// |
| //// from http://www.opencores.org/lgpl.shtml //// |
| //// //// |
| ////////////////////////////////////////////////////////////////////// |
| |
| `default_nettype wire |
| |
| `timescale 1 ns / 1 ns |
| |
| `include "sram_macros/sky130_sram_2kbyte_1rw1r_32x512_8.v" |
| `include "i2c_slave_model.v" |
| |
| module tb_top; |
| |
| reg clock ; |
| reg wb_rst_i ; |
| reg power1, power2; |
| reg power3, power4; |
| |
| reg wbd_ext_cyc_i; // strobe/request |
| reg wbd_ext_stb_i; // strobe/request |
| reg [31:0] wbd_ext_adr_i; // address |
| reg wbd_ext_we_i; // write |
| reg [31:0] wbd_ext_dat_i; // data output |
| reg [3:0] wbd_ext_sel_i; // byte enable |
| |
| wire [31:0] wbd_ext_dat_o; // data input |
| wire wbd_ext_ack_o; // acknowlegement |
| wire wbd_ext_err_o; // error |
| |
| // User I/O |
| wire [37:0] io_oeb ; |
| wire [37:0] io_out ; |
| wire [37:0] io_in ; |
| |
| wire [37:0] mprj_io ; |
| wire [7:0] mprj_io_0 ; |
| reg test_fail ; |
| reg [31:0] read_data ; |
| //---------------------------------- |
| // Uart Configuration |
| // --------------------------------- |
| |
| integer i,j; |
| |
| // External clock is used by default. Make this artificially fast for the |
| // simulation. Normally this would be a slow clock and the digital PLL |
| // would be the fast clock. |
| |
| always #12.5 clock <= (clock === 1'b0); |
| |
| initial begin |
| clock = 0; |
| wbd_ext_cyc_i ='h0; // strobe/request |
| wbd_ext_stb_i ='h0; // strobe/request |
| wbd_ext_adr_i ='h0; // address |
| wbd_ext_we_i ='h0; // write |
| wbd_ext_dat_i ='h0; // data output |
| wbd_ext_sel_i ='h0; // byte enable |
| end |
| |
| `ifdef WFDUMP |
| initial begin |
| $dumpfile("simx.vcd"); |
| $dumpvars(0, tb_top); |
| end |
| `endif |
| |
| initial |
| begin |
| test_fail = 0; |
| init(); |
| |
| #200; // Wait for reset removal |
| repeat (10) @(posedge clock); |
| $display("############################################"); |
| $display(" Testing I2CM Read/Write Access "); |
| $display("############################################"); |
| |
| |
| repeat (10) @(posedge clock); |
| #1; |
| // Enable I2M Block & WB Reset and Enable I2CM Mux Select |
| wb_user_core_write(`ADDR_SPACE_WBHOST+`WBHOST_GLBL_CFG,'h01); |
| |
| // Enable I2C Multi Functional Ports |
| wb_user_core_write(`ADDR_SPACE_GLBL+`GLBL_CFG_MUTI_FUNC,'h8000); |
| |
| // Remove i2m reset |
| wb_user_core_write(`ADDR_SPACE_GLBL+`GLBL_CFG_CFG0,'h010); |
| |
| repeat (100) @(posedge clock); |
| |
| @(posedge clock); |
| $display("---------- Initialize I2C Master ----------"); |
| |
| //Wrire Prescale registers |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h0<<2),8'hC7); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h1<<2),8'h00); |
| // Core Enable |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h2<<2),8'h80); |
| |
| // Writing Data |
| |
| $display("---------- Writing Data ----------"); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h20); // Slave Addr + WR |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h90); |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h66); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h10); |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| /* Byte1: 12 */ |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h12); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h10); // No Stop + Write |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| /* Byte1: 34 */ |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h34); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h10); // No Stop + Write |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| /* Byte1: 56 */ |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h56); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h10); // No Stop + Write |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| /* Byte1: 78 */ |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h78); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h50); // Stop + Write |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| //Reading Data |
| |
| //Wrire Address |
| $display("---------- Writing Data ----------"); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h20); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h90); |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h66); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h50); |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| //Generate Read |
| $display("---------- Writing Data ----------"); |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h3<<2),8'h21); // Slave Addr + RD |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h90); |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| /* BYTE-1 : 0x12 */ |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h20); // RD + ACK |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| //Compare received data |
| wb_user_core_read_cmp(`ADDR_SPACE_I2CM+(8'h3<<2),8'h12); |
| |
| /* BYTE-2 : 0x34 */ |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h20); // RD + ACK |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| //Compare received data |
| wb_user_core_read_cmp(`ADDR_SPACE_I2CM+(8'h3<<2),8'h34); |
| |
| /* BYTE-3 : 0x56 */ |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4 <<2),8'h20); // RD + ACK |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4<<2),read_data); |
| |
| //Compare received data |
| wb_user_core_read_cmp(`ADDR_SPACE_I2CM+(8'h3<<2),8'h56); |
| |
| /* BYTE-4 : 0x78 */ |
| wb_user_core_write(`ADDR_SPACE_I2CM+(8'h4<<2),8'h68); // STOP + RD + NACK |
| |
| read_data[1] = 1'b1; |
| while(read_data[1]==1) |
| wb_user_core_read(`ADDR_SPACE_I2CM+(8'h4 <<2),read_data); |
| |
| //Compare received data |
| wb_user_core_read_cmp(`ADDR_SPACE_I2CM+(8'h3 <<2),8'h78); |
| |
| repeat(100)@(posedge clock); |
| |
| |
| |
| $display("###################################################"); |
| if(test_fail == 0) begin |
| `ifdef GL |
| $display("Monitor: Standalone User I2M Test (GL) Passed"); |
| `else |
| $display("Monitor: Standalone User I2M Test (RTL) Passed"); |
| `endif |
| end else begin |
| `ifdef GL |
| $display("Monitor: Standalone User I2M Test (GL) Failed"); |
| `else |
| $display("Monitor: Standalone User I2M Test (RTL) Failed"); |
| `endif |
| end |
| $display("###################################################"); |
| #100 |
| $finish; |
| end |
| |
| |
| wire USER_VDD1V8 = 1'b1; |
| wire VSS = 1'b0; |
| |
| |
| user_project_wrapper u_top( |
| `ifdef USE_POWER_PINS |
| .vccd1(USER_VDD1V8), // User area 1 1.8V supply |
| .vssd1(VSS), // User area 1 digital ground |
| `endif |
| .wb_clk_i (clock), // System clock |
| .user_clock2 (1'b1), // Real-time clock |
| .wb_rst_i (wb_rst_i), // Regular Reset signal |
| |
| .wbs_cyc_i (wbd_ext_cyc_i), // strobe/request |
| .wbs_stb_i (wbd_ext_stb_i), // strobe/request |
| .wbs_adr_i (wbd_ext_adr_i), // address |
| .wbs_we_i (wbd_ext_we_i), // write |
| .wbs_dat_i (wbd_ext_dat_i), // data output |
| .wbs_sel_i (wbd_ext_sel_i), // byte enable |
| |
| .wbs_dat_o (wbd_ext_dat_o), // data input |
| .wbs_ack_o (wbd_ext_ack_o), // acknowlegement |
| |
| |
| // Logic Analyzer Signals |
| .la_data_in ('1) , |
| .la_data_out (), |
| .la_oenb ('0), |
| |
| |
| // IOs |
| .io_in (io_in) , |
| .io_out (io_out) , |
| .io_oeb (io_oeb) , |
| |
| .user_irq () |
| |
| ); |
| // SSPI Slave I/F |
| assign io_in[0] = 1'b1; // RESET |
| |
| `ifndef GL // Drive Power for Hold Fix Buf |
| // All standard cell need power hook-up for functionality work |
| initial begin |
| |
| end |
| `endif |
| |
| //--------------------------- |
| // I2C |
| // -------------------------- |
| tri scl,sda; |
| |
| assign sda = (io_oeb[26] == 1'b0) ? io_out[26] : 1'bz; |
| assign scl = (io_oeb[27] == 1'b0) ? io_out[27]: 1'bz; |
| assign io_in[26] = sda; |
| assign io_in[27] = scl; |
| |
| pullup p1(scl); // pullup scl line |
| pullup p2(sda); // pullup sda line |
| |
| |
| i2c_slave_model u_i2c_slave ( |
| .scl (scl), |
| .sda (sda) |
| ); |
| |
| |
| task wb_user_core_write; |
| input [31:0] address; |
| input [31:0] data; |
| begin |
| repeat (1) @(posedge clock); |
| #1; |
| wbd_ext_adr_i =address; // address |
| wbd_ext_we_i ='h1; // write |
| wbd_ext_dat_i =data; // data output |
| wbd_ext_sel_i ='hF; // byte enable |
| wbd_ext_cyc_i ='h1; // strobe/request |
| wbd_ext_stb_i ='h1; // strobe/request |
| wait(wbd_ext_ack_o == 1); |
| repeat (1) @(posedge clock); |
| #1; |
| wbd_ext_cyc_i ='h0; // strobe/request |
| wbd_ext_stb_i ='h0; // strobe/request |
| wbd_ext_adr_i ='h0; // address |
| wbd_ext_we_i ='h0; // write |
| wbd_ext_dat_i ='h0; // data output |
| wbd_ext_sel_i ='h0; // byte enable |
| $display("STATUS: WB USER ACCESS WRITE Address : 0x%x, Data : 0x%x",address,data); |
| repeat (2) @(posedge clock); |
| end |
| endtask |
| |
| task wb_user_core_read; |
| input [31:0] address; |
| output [31:0] data; |
| reg [31:0] data; |
| begin |
| repeat (1) @(posedge clock); |
| #1; |
| wbd_ext_adr_i =address; // address |
| wbd_ext_we_i ='h0; // write |
| wbd_ext_dat_i ='0; // data output |
| wbd_ext_sel_i ='hF; // byte enable |
| wbd_ext_cyc_i ='h1; // strobe/request |
| wbd_ext_stb_i ='h1; // strobe/request |
| wait(wbd_ext_ack_o == 1); |
| repeat (1) @(negedge clock); |
| data = wbd_ext_dat_o; |
| repeat (1) @(posedge clock); |
| #1; |
| wbd_ext_cyc_i ='h0; // strobe/request |
| wbd_ext_stb_i ='h0; // strobe/request |
| wbd_ext_adr_i ='h0; // address |
| wbd_ext_we_i ='h0; // write |
| wbd_ext_dat_i ='h0; // data output |
| wbd_ext_sel_i ='h0; // byte enable |
| //$display("STATUS: WB USER ACCESS READ Address : 0x%x, Data : 0x%x",address,data); |
| repeat (2) @(posedge clock); |
| end |
| endtask |
| |
| task wb_user_core_read_cmp; |
| input [31:0] address; |
| input [31:0] cmp_data; |
| reg [31:0] data; |
| begin |
| repeat (1) @(posedge clock); |
| #1; |
| wbd_ext_adr_i =address; // address |
| wbd_ext_we_i ='h0; // write |
| wbd_ext_dat_i ='0; // data output |
| wbd_ext_sel_i ='hF; // byte enable |
| wbd_ext_cyc_i ='h1; // strobe/request |
| wbd_ext_stb_i ='h1; // strobe/request |
| wait(wbd_ext_ack_o == 1); |
| repeat (1) @(negedge clock); |
| data = wbd_ext_dat_o; |
| repeat (1) @(posedge clock); |
| #1; |
| wbd_ext_cyc_i ='h0; // strobe/request |
| wbd_ext_stb_i ='h0; // strobe/request |
| wbd_ext_adr_i ='h0; // address |
| wbd_ext_we_i ='h0; // write |
| wbd_ext_dat_i ='h0; // data output |
| wbd_ext_sel_i ='h0; // byte enable |
| if(data !== cmp_data) begin |
| $display("ERROR : WB USER ACCESS READ Address : 0x%x, Exd: 0x%x Rxd: 0x%x ",address,cmp_data,data); |
| test_fail = 1; |
| end else begin |
| $display("STATUS: WB USER ACCESS READ Address : 0x%x, Data : 0x%x",address,data); |
| end |
| repeat (2) @(posedge clock); |
| end |
| endtask |
| |
| `ifdef GL |
| |
| wire wbd_spi_stb_i = u_top.u_qspi_master.wbd_stb_i; |
| wire wbd_spi_ack_o = u_top.u_qspi_master.wbd_ack_o; |
| wire wbd_spi_we_i = u_top.u_qspi_master.wbd_we_i; |
| wire [31:0] wbd_spi_adr_i = u_top.u_qspi_master.wbd_adr_i; |
| wire [31:0] wbd_spi_dat_i = u_top.u_qspi_master.wbd_dat_i; |
| wire [31:0] wbd_spi_dat_o = u_top.u_qspi_master.wbd_dat_o; |
| wire [3:0] wbd_spi_sel_i = u_top.u_qspi_master.wbd_sel_i; |
| |
| wire wbd_uart_stb_i = u_top.u_uart_i2c_usb_spi.reg_cs; |
| wire wbd_uart_ack_o = u_top.u_uart_i2c_usb_spi.reg_ack; |
| wire wbd_uart_we_i = u_top.u_uart_i2c_usb_spi.reg_wr; |
| wire [8:0] wbd_uart_adr_i = u_top.u_uart_i2c_usb_spi.reg_addr; |
| wire [7:0] wbd_uart_dat_i = u_top.u_uart_i2c_usb_spi.reg_wdata; |
| wire [7:0] wbd_uart_dat_o = u_top.u_uart_i2c_usb_spi.reg_rdata; |
| wire wbd_uart_sel_i = u_top.u_uart_i2c_usb_spi.reg_be; |
| |
| `endif |
| |
| /** |
| `ifdef GL |
| //----------------------------------------------------------------------------- |
| // RISC IMEM amd DMEM Monitoring TASK |
| //----------------------------------------------------------------------------- |
| |
| `define RISC_CORE user_uart_tb.u_top.u_core.u_riscv_top |
| |
| always@(posedge `RISC_CORE.wb_clk) begin |
| if(`RISC_CORE.wbd_imem_ack_i) |
| $display("RISCV-DEBUG => IMEM ADDRESS: %x Read Data : %x", `RISC_CORE.wbd_imem_adr_o,`RISC_CORE.wbd_imem_dat_i); |
| if(`RISC_CORE.wbd_dmem_ack_i && `RISC_CORE.wbd_dmem_we_o) |
| $display("RISCV-DEBUG => DMEM ADDRESS: %x Write Data: %x Resonse: %x", `RISC_CORE.wbd_dmem_adr_o,`RISC_CORE.wbd_dmem_dat_o); |
| if(`RISC_CORE.wbd_dmem_ack_i && !`RISC_CORE.wbd_dmem_we_o) |
| $display("RISCV-DEBUG => DMEM ADDRESS: %x READ Data : %x Resonse: %x", `RISC_CORE.wbd_dmem_adr_o,`RISC_CORE.wbd_dmem_dat_i); |
| end |
| |
| `endif |
| **/ |
| `include "user_tasks.sv" |
| endmodule |
| `default_nettype wire |
