S32 SDK
FreeMASTER

Example application showing FreeMASTER Serial Communication usage

Application description


The purpose of this demo application is to show you how to use the FreeMASTER serial communication using S32K144 on OpenSDA with this SDK.

This demo uses the FreeMASTER Run-Time Debugging Tool to visualise ADC conversions and allows the user to monitor the ADC sampling rate for different ADC configurations (ADC sampling time and resolution can be controlled through FreeMASTER Application Commands).

The ADC is configured to perform continous conversions and generate an interrupt after each conversion. The LPTMR is configured to generate a periodic interrupt at 10 ms which reads the number of ADC conversions.

Prerequisites


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

  • 1 S32K144 board
  • 1 Power Adapter 12V
  • 1 Dupont male to male cable
  • 1 Personal Computer
  • 1 Jlink Lite Debugger (optional, users can use Open SDA)
  • FreeMASTER host application

Boards supported


The following boards are supported by this application:

  • S32K144EVB-Q100
  • S32K144-MB

Hardware Wiring


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

PIN FUNCTION S32K144EVB-Q100 S32K144-MB
LPUART1 TX (PTC7) UART_TX - wired on the board J11.26 - J20.2
LPUART1 RX (PTC6) UART_RX - wired on the board J11.25 - J20.5
ADC0 Input 12 (PTC14) POT - wired on the board J21.1 - J11.18

How to run


1. Importing the project into the workspace

After opening S32 Design Studio, go to File -> New S32DS Project From... and select freemaster. 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(freemaster). 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 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
freemaster Debug_RAM Jlink Debug the RAM configuration using Segger Jlink debuggers
freemaster Debug_FLASH Jlink Debug the FLASH configuration using Segger Jlink debuggers
freemaster Debug_RAM PEMicro Debug the RAM configuration using PEMicro debuggers
freemaster 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.

  • Open the FreeMASTER project and set the communication parameters: Go to Project/Options/Comm, choose Direct RS232 and set the port and speed.
  • Go to Project/Options/MAP Files and select the *.elf file of your project and set file format to ELF/DWARF.
Note
For more detailed information related to S32 Design Studio usage please consult the available documentation.

Notes


FreeMASTER host application can be downloaded from NXP's website. FreeMASTER Serial Communication is included into the project (V2.0).