How to compile EFM8BB50 microcontroller using Keil uVision

You may want to post your question here,

https://community.silabs.com/s/topic/0TO1M000000qHW3WAM/8bit-microcontroller-mcu?language=en_US

In the meantime, since I've never heard of the "SiC8051_uVision" variant (my install is much older), can you please post from your uVision menu Help -> About uVision?

You are right, this device is not in our device database. There are three ways to use new 8051 based devices in uVision:

• Select a generic device in µVision and add all your header files and adjust RAM/ROM settings for the linker that reflect the memory of your new device. This is described at the beginning of this KBA: https://developer.arm.com/documentation/ka003573/latest/
• Silabs or you could make a user-defined device database which can then be distributed among colleagues or customers of Silabs. This is described in this KBA: https://developer.arm.com/documentation/ka003843/latest/
• You could add this device manually in uVision. This is described in the second half of this KBA:
  https://developer.arm.com/documentation/ka003573/latest/

Thank you very much. I successfully created the EFM8BB50 data using this method. I modified the CPU, XRAM, and IROM according to the datasheet. However, I didn't modify MON and SIM because the DLL files couldn't be edited. I'm not sure if these two files will have any impact, but currently, the compilation was successful and the HEX file was generated successfully. The EFM8BB50 header file comes from Simplicity Studio V5 software.

Good that you managed to define the device to a point where you can build your project.

MON and SIM specify the DLLs that display the peripheral dialogs for the simulator and target debugger. You can't extend these DLLs, and you will most likely miss some peripheral dialogs that are specific to your device.

You don't need the Keil Simulator to work. You can buy a $30 USD debugger from Mouser or wherever and debug on the real hardware including breakpoints and memory watches. SILabs provides the Windows application. I use a different part but I compile in uVision then load the .OMF into the SiLabs debugger application which is hooked up to my target hardware using their USB 10-pin debugger.

Although I compiled the HEX file using Keil, it seems useless because Keil cannot write the program via USB debug adapter. Other Silicon Labs software also fails to write the HEX file to the microcontroller. Currently, it appears that only Simplicity Studio V5 can compile and flash the program

This DLL file might be crucial, as it could affect whether I can write the program to the microcontroller. Although I compiled the HEX file using Keil, it seems useless because Keil cannot write the program via USB debug adapter. Other Silicon Labs software also fails to write the HEX file to the microcontroller. Currently, it appears that only Simplicity Studio V5 can compile and flash the program