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RM48L950: Internal watchdog functionality usage on RM48

Part Number: RM48L950
Other Parts Discussed in Thread: HALCOGEN

Hi Ti, 

Is there any sample code available to test an internal watchdog functionality on Rm48 controller? Whether it is required to use the RTI modules for configuring and  running the WDT functionality? Please provide any sample code if available, it will be helpful for us.

Thanks,

Monish P

  • Hi Monish,

    The HALCOGen has an example of using DWWD:

    C:\ti\Hercules\HALCoGen\v04.07.01\examples\RM48x

    example_dwwd.c
    /** @example example_dwwd.c
    *   This is an example which describes the steps to configure dwwd to generate NMI
    *
    *   @b Step @b 1:
    *
    *   Create a new project.
    *
    *   Navigate: -> File -> New -> Project
    *
    *   @b Step @b 2:
    *
    *   Configure driver code generation: 
    *   - Enable GIO driver
    *   - Enable RTI driver
    *   - Disable others
    *
    *   Navigate: -> TMS570LS12x/RM46x/TMS570LS43x/RM42x -> Enable Drivers
    *
    *
    *   @b Step @b 3:
    *
    *   Enable RTI Compare 0 interrupt in VIM (Tab VIM Channel 0-31)
    *
    *   @b Step @b 4:
    *
    *   Set the compare periods of RTI Compare 0 as 200ms
    *
    *   Navigate: -> RTI -> RTI Compare
    *
    *   @b Step @b 5:
    *
    *   Copy the source code below into your sys_main.c or replace sys_main.c with this file.
    *
    *   The example file can also be found in the examples folder: ../HALCoGen/examples
    *
    *   @note HALCoGen generates an empty main function in sys_main.c, 
    *
    *
    *                        
    */
    
    /* 
    * Copyright (C) 2009-2015 Texas Instruments Incorporated - www.ti.com
    * 
    * 
    *  Redistribution and use in source and binary forms, with or without 
    *  modification, are permitted provided that the following conditions 
    *  are met:
    *
    *    Redistributions of source code must retain the above copyright 
    *    notice, this list of conditions and the following disclaimer.
    *
    *    Redistributions in binary form must reproduce the above copyright
    *    notice, this list of conditions and the following disclaimer in the 
    *    documentation and/or other materials provided with the   
    *    distribution.
    *
    *    Neither the name of Texas Instruments Incorporated nor the names of
    *    its contributors may be used to endorse or promote products derived
    *    from this software without specific prior written permission.
    *
    *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
    *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
    *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
    *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
    *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
    *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES INCLUDING, BUT NOT 
    *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
    *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND ON ANY
    *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
    *  INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE 
    *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    *
    */
    
    /* USER CODE BEGIN (0) */
    /* USER CODE END */
    
    /* Include Files */
    
    #include "sys_common.h"
    #include "system.h"
    
    /* USER CODE BEGIN (1) */
    #include "rti.h"
    #include "het.h"
    #include "esm.h"
    /* USER CODE END */
    
    /** @fn void main(void)
    *   @brief Application main function
    *   @note This function is empty by default.
    *
    *   This function is called after startup.
    *   The user can use this function to implement the application.
    */
    
    /* USER CODE BEGIN (2) */
    int ctr = 0;
    /* USER CODE END */
    
    void main(void)
    {
    /* USER CODE BEGIN (3) */
    	/* Enable interrupt */
    	_enable_IRQ();
    	gioSetDirection(hetPORT1, 0xFFFFFFFF);
    	/* Initialize RTI */
    	rtiInit();
    	/* Enable RTI compare 0 notification */
    	rtiEnableNotification(rtiNOTIFICATION_COMPARE0);
    	/* Start counter */
    	rtiStartCounter(rtiCOUNTER_BLOCK0);
    	/* Initialize and start DWD */
    	dwwdInit(Generate_NMI, 4095, Size_100_Percent);
    	dwdCounterEnable();
    	/* DWD is serviced in the RTI interrupt*/
    	/* Delay */
    	while(ctr < 5);
    	/* Stop Servicing DWD */
    	rtiDisableNotification(rtiNOTIFICATION_COMPARE0);
    	while(1);
    
    /* USER CODE END */
    }
    
    /* USER CODE BEGIN (4) */
    void rtiNotification(uint32 notification)
    {
    	ctr++;
    	gioToggleBit(hetPORT1,0);
    	dwdReset();
    }
    /* USER CODE END */

  • Hi Wang, 

    Thanks for the reply, it worked.