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[/] [openmsp430/] [trunk/] [core/] [sim/] [rtl_sim/] [src/] [dbg_uart_halt_irq.v] - Blame information for rev 154

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1 91 olivier.gi
/*===========================================================================*/
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/* Copyright (C) 2001 Authors                                                */
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/*                                                                           */
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/* This source file may be used and distributed without restriction provided */
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/* that this copyright statement is not removed from the file and that any   */
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/* derivative work contains the original copyright notice and the associated */
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/* disclaimer.                                                               */
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/*                                                                           */
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/* This source file is free software; you can redistribute it and/or modify  */
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/* it under the terms of the GNU Lesser General Public License as published  */
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/* by the Free Software Foundation; either version 2.1 of the License, or    */
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/* (at your option) any later version.                                       */
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/*                                                                           */
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/* This source is distributed in the hope that it will be useful, but WITHOUT*/
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public       */
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/* License for more details.                                                 */
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/*                                                                           */
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/* You should have received a copy of the GNU Lesser General Public License  */
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/* along with this source; if not, write to the Free Software Foundation,    */
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/* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA        */
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/*                                                                           */
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/*===========================================================================*/
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/*                        SERIAL DEBUG INTERFACE                             */
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/*---------------------------------------------------------------------------*/
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/* Test the serial debug interface:                                          */
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/*                           - Interrupts when going out of halt mode.       */
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/*                                                                           */
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/* Author(s):                                                                */
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/*             - Olivier Girard,    olgirard@gmail.com                       */
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/*                                                                           */
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/*---------------------------------------------------------------------------*/
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/* $Rev: 19 $                                                                */
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/* $LastChangedBy: olivier.girard $                                          */
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/* $LastChangedDate: 2009-08-04 23:47:15 +0200 (Tue, 04 Aug 2009) $          */
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/*===========================================================================*/
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reg [15:0] r13_bkup;
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initial
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   begin
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      $display(" ===============================================");
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      $display("|                 START SIMULATION              |");
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      $display(" ===============================================");
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`ifdef DBG_EN
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`ifdef DBG_UART
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      #1 dbg_en = 1;
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      repeat(30) @(posedge mclk);
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      stimulus_done = 0;
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      // Initialize the debug interface and send the CPU in halt mode
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      dbg_uart_tx(DBG_SYNC);
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`ifdef DBG_RST_BRK_EN
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      dbg_uart_wr(CPU_CTL,  16'h0002);  // RUN
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`endif
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      // Wait until software initialization is done
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      if (r15!==(`PER_SIZE+16'h0000))
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        @(r15==(`PER_SIZE+16'h0000));
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      dbg_uart_wr(CPU_CTL,  16'h0001);  // HALT
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      repeat(150) @(posedge mclk);
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      r13_bkup = r13;
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      // Generate a GPIO interrupt
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      p1_din[0] = 1'b1;
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      repeat(150) @(posedge mclk);
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      // Re-start the CPU
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      dbg_uart_wr(CPU_CTL,  16'h0002);  // RUN
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      repeat(150) @(posedge mclk);
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      // Make sure the interrupt was serviced
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      if (r14 !== 16'haaaa) tb_error("====== Interrupt was not properly serviced =====");
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      // Make sure the program resumed execution when coming back from IRQ
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      if (r13 === r13_bkup) tb_error("====== Program didn't properly resumed execution =====");
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      p1_din[1] = 1'b1;
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      stimulus_done = 1;
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`else
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       $display(" ===============================================");
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       $display("|               SIMULATION SKIPPED              |");
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       $display("|   (serial debug interface UART not included)  |");
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       $display(" ===============================================");
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       $finish;
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`endif
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`else
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       $display(" ===============================================");
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       $display("|               SIMULATION SKIPPED              |");
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       $display("|      (serial debug interface not included)    |");
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       $display(" ===============================================");
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       $finish;
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`endif
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   end
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