Mrgrate STM32G0B1 to STM32G0B0?

[E-John]

Dear SIR,

We want to use STM32G0B0 to develop our project. We want to use EVK to write code before our board comes.

But there is NO STM32G0B0 EVK, only STM32G0B1 EVK exist.(or NUCLEO-G0B1RE, https://www.st.com/en/evaluation-tools/nucleo-g0b1re.html)

How difficult for user migrate code from STM32G0B1 to STM32G0B0?

Thanks.

[STTwo-32 · Accepted solution]

Hello @E-John 

Yes, it should be easy to do this migration.

You have to take care of some differences in hardware, peripheral availability, firmware, security, and tools.

Also, you can use both Cross Selector: 

and Pinout compatibility feature: 

available using STM32CubeMX. 

Best Regards

STTwo-32

[E-John]

@STTwo-32 

You have to take care of some differences in hardware, peripheral availability, firmware, security, and tools.

---> Here are what I have found.

1. make projects 01-STM32G0B0RE and 01-STM32G0B1RE by STM32CubeIDE tool

    Make code generated by tool.

2. Make a comparison between two projects directories like below

3. Different files are startup, CMSIS and linker scripts, see table below 

	STM32G0B0RE	STM32G0B1RE
startup file	01-STM32G0B0RE\Core\Startup\ startup_stm32g0b0retx.s	01-STM32G0B1RE\Core\Startup\ startup_stm32g0b1retx.s
CMSIS	01-STM32G0B0RE\Drivers\CMSIS\Device\ST\STM32G0xx\Include\ stm32g0b0xx.h	01-STM32G0B1RE\Drivers\CMSIS\Device\ST\STM32G0xx\Include\ stm32g0b1xx.h
linker script for flash	01-STM32G0B0RE\ STM32G0B0RETX_FLASH.ld	01-STM32G0B1RE\ STM32G0B1RETX_FLASH.ld
linker script for ram	01-STM32G0B0RE\ STM32G0B0RETX_RAM.ld	01-STM32G0B1RE\ STM32G0B1RETX_RAM.ld

4. HAL level drivers seems to be the same.    

[PieterInHetBos]

We have an project with the STM32G0B0 and bought the STM32G070 Nucleo and solderd the G0B0 to is, it is 1 to 1 pin compatible ony has USB and the 070 doesnt have USB

[E-John]

@PieterInHetBos 

make projects 01-STM32G0B0RE and 01-STM32G070RB by STM32CubeIDE tool.

Compare these two directories, the startup file, header files under CMSIS\Device\ST\STM32G0xx\Include\ and linker scripts are still different.

The best way I can think is to create two projects for different platforms, and merge the hardware independent code from 070 to 0B0.