WDOG Interrupt

Example application that will show the usage of the Watchdog

Application description


The purpose of this driver application is to show the user how to use the WDOG from the S32K118 using the S32 SDK API.

The examples uses the SysTick timer from the ARM core to refresh the WDOG counter for 8 times. After this the Watchdog counter will expire and the CPU will be reset. If the FLASH configuration will be used, then the code will use the Reset Control Module to detect if the reset was caused by the Watchdog and will stop the execution of the program.

Run the example:

  1. After reset, GREEN LED and RED LED is off.
  2. Initialize WDOG Interrupt above then RED LED is toggle 8 times( on 4 times and off 4 times).
  3. Watchdog timeout happen then MCU reset and GREEN LED and RED LED is on and The program will stopped.

Prerequisites


The run the example you will need to have the following items:

  • 1 S32K118 board
  • 1 Power Adapter 12V
  • 1 Personal Computer
  • 1 Jlink Lite Debugger (optional, users can use Open SDA)

Boards supported


The following boards are supported by this application:

  • S32K118EVB-Q064
  • S32K118-MB

Hardware Wiring


The following connections must be done to for this example application to work:

PIN FUNCTION S32K118EVB-Q064 S32K118-MB
RED_LED (PTD16) RGB_RED - wired on the board LED0 - wired on the board
GREEN_LED (PTD15) RGB_GREEN - wired on the board LED1 - wired on the board

How to run


1. Importing the project into the workspace

After opening S32 Design Studio, go to File -> New S32DS Project From... and select wdog_interrupt_s32k118. Then click on Finish.
The project should now be copied into you current workspace.

2. Generating the Processor Expert configuration

First go to Project Explorer View in S32 DS and select the current project(wdog_interrupt_s32k118). Then go to Project and click on Generate Processor Expert Code
Wait for the code generation to be completed before continuing to the next step.

3. Building the project

Select the configuration to be built FLASH (Debug_FLASH) or RAM (Debug_RAM) by left clicking on the downward arrow corresponding to the build button(. Wait for the bulid action to be completed before continuing to the next step.

4. Running the project

Go to Run and select Debug Configurations. There will be four debug configurations for this project:

Configuration Name Description
wdog_interrupt_s32k118_debug_ram_jlink Debug the RAM configuration using Segger Jlink debuggers
wdog_interrupt_s32k118_debug_flash_jlink Debug the FLASH configuration using Segger Jlink debuggers
wdog_interrupt_s32k118_debug_ram_pemicro Debug the RAM configuration using PEMicro debuggers
wdog_interrupt_s32k118_debug_flash_pemicro Debug the FLASH configuration using PEMicro debuggers


Select the desired debug configuration and click on Launch. Now the perspective will change to the Debug Perspective.
Use the controls to control the program flow.

Note
For more detailed information related to S32 Design Studio usage please consult the available documentation.