UART PAL ECHO

Basic application that presents the project scenarios for S32 SDK

Application description


The purpose of this demo is to show the user how UART PAL works over FLEXIO_UART or LPUART peripherals. The user can choose whether to use FLEXIO_UART or LPUART (see USE_FLEXIO_UART define from example code). The board sends a welcome message to the console with further instructions. If 'Hello!' string is sent from the console, the board will reply with 'Hello World!'; when any other string is sent from the console, it will be echoed back. Red led(devkit) or led 1(Motherboard) shall be turned on if the communication is done over FLEXIO_UART;similarly the led shall be turned off if the communication is done over LPUART.

Prerequisites


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

  • 1 S32K118 board
  • 1 Power Adapter 12V (if the board cannot be powered from the USB port)
  • 1 Personal Computer
  • 1 Jlink Lite Debugger (optional, users can use Open SDA)
  • UART to USB converter if it is not included on the target board. (Please consult your boards documentation to check if UART-USB converter is present).

Boards supported


The following boards are supported by this application:

  • S32K118EVB-Q064
  • S32K1xxCVD-Q064 + S32K-MB(or S32K144-MB)

Hardware Wiring


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

PIN FUNCTION S32K118EVB-Q064 S32K-MB or S32K144-MB
RED_LED (PTD16) RGB_RED - wired on the board
LED1 (PTC1) JP50 - jump 50 on motherboard
LPUART0 TX (PTB1) UART_TX - wired on the board J10.32 - J20.2
LPUART0 RX (PTB0) UART_RX - wired on the board J10.31 - J20.5
FLEXIO_UART RX (PTA1) J2.10 - J3.2 J9.32 - J20.5
FLEXIO_UART TX (PTA0) J2.9 - J3.4 J9.31 - J20.2

How to run


1. Importing the project into the workspace

After opening S32 Design Studio, go to File -> New S32DS Project From... and select uart_pal_echo. 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(uart_pal_echo). 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
uart_pal_echo_s32k118_debug_flash_jlink Debug the FLASH configuration using Segger Jlink debuggers
uart_pal_echo_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.

Notes


For this example it is necessary to open a terminal emulator and configure it with:

  • 115200 baud
  • One stop bit
  • No parity
  • No flow control
  • '\n' line ending