This demo is targeted towards the NXP S32K144 EVB board, with 512 kB internal Flash EEPROM and 64 kB internal RAM.

To program the bootloader into the internal flash on the S32K144 microcontroller, a Segger J-Link debugger interface was used, in combination with a ARM-JTAG-20-10 adapter. However, this is not required if you have another means of programming the internal flash.

To compile the demo programs you can use the IAR Embedded Workbench for ARM.

When performing updates via CAN, make sure to configure the board such that it is powered with a 12V power source (jumper J107), instead of via USB, otherwise the CAN transceiver on the board is not powered.

Before the bootloader can be used, it needs to be built and programmed into the S32K144's internal flash memory. The steps in this section only need to be done once.

When using IAR EWARM, simply open the workspace from within the Embedded Workbench. The workspace file (s32k144.eww) is located at: \Target\Demo\ARMCM4_S32K14_S32K144EVB_IAR\Boot\ide\. Once opened, select Project→Rebuild All from the menu to compile all the bootloader sources and link them together into the final executable.

The bootloader program is now ready to be programmed into the internal flash memory of the S32K144. Select Project → Download and Debug (Ctrl+D) from the menu to flash the bootloader program. Once done, you can start the bootloader program by selecting Debug → Go (F5) from the menu.

Alternatively, you can use your favorite programmer to flash the bootloader using one of the following files, depending on what file type your programmer supports:

• \Target\Demo\ARMCM4_S32K14_S32K144EVB_IAR\Boot\bin\openblt_s32k144.out
• \Target\Demo\ARMCM4_S32K14_S32K144EVB_IAR\Boot\bin\openblt_s32k144.srec

When using IAR EWARM, simply open the workspace from within the Embedded Workbench. The workspace file (s32k144.eww) is located at: \Target\Demo\ARMCM4_S32K14_S32K144EVB_IAR\Prog\ide\. Once opened, select Project→Rebuild All from the menu to compile all the demo program sources and link the together into the final executable.

The output file is

• \Target\Demo\ARMCM4_S32K14_S32K144EVB_IAR\Prog\bin\demoprog_s32k144.srec

To download the demo program \Target\Demo\ARMCM4_S32K14_S32K144EVB_IAR\Prog\bin\demoprog_s32k144.srec using the bootloader, follow the instructions in the following links, depending on the communication interface you intend to use:

• Firmware updates using the RS232 communication interface
• Firmware updates using the CAN communication interface