LPTMR Periodic Interrupt

Example application that shows the LPTMR's Timer feature

Application description


The purpose of this demo application is to show you how to use the LPTMR's Timer functionality from the S32K118 using the S32 SDK API.

  • The LPTMR is configured to generate a periodic interrupt at 1 seconds which toggles a LED.

Prerequisites


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

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

Boards supported


The following boards are supported by this application:

  • S32K118EVB-Q64
  • S32K118-MB

Hardware Wiring


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

PIN FUNCTION S32K118EVB-Q64 S32K118-MB
GREEN_LED (PTD15) RGB_GREEN - wired on the board LED1 - J11.32-J12.18

How to run


1. Importing the project into the workspace

After opening S32 Design Studio, go to File -> New S32DS Project From... and select lptmr_periodic_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(lptmr_periodic_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) by left clicking on the downward arrow corresponding to the build button(. Wait for the build 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
lptmr_periodic_interrupt_s32k118_debug_flash_jlink Debug the FLASH configuration using Segger Jlink debuggers
lptmr_periodic_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.