I'm using another RP2040 flashed with https://github.com/raspberrypi/debugprobe 
as my SWD debug probe.

Jean

> On 13 Oct 2025, at 14:32, Alan C. Assis <[email protected]> wrote:
> 
> Jean,
> 
> Maybe the issue is related to stlink support on OpenOCD, maybe we need to
> use another programmer better compatible with ARM DAP.
> 
> What programmer are you using with OpenOCD?
> 
> BR,
> 
> Alan
> 
> On Mon, Oct 13, 2025 at 9:24 AM Alan C. Assis <[email protected]> wrote:
> 
>> Hi Jean,
>> 
>> Thank you for the suggestion. In fact CONFIG_SYSLOG_DEFAULT is enabled,
>> but it is not displayed in the defconfig because it is enabled by default,
>> so the savedefconfig compression doesn't include it.
>> 
>> BR,
>> 
>> Alan
>> 
>> On Mon, Oct 13, 2025 at 5:56 AM Jean Thomas <[email protected]>
>> wrote:
>> 
>>> Hi Alan,
>>> 
>>>> Could you please double check my defconfig for stm32f4discovery (a
>>> create a
>>>> config using the nsh as base removing USART support and enabling
>>>> SEMIHOSTING SYSLOG):
>>> 
>>> I don't see CONFIG_SYSLOG_DEFAULT=y in there.
>>> 
>>> Also, can you try to bump CONFIG_SYSLOG_MAX_CHANNELS to a higher value
>>> than 1 (default)? Syslog is seemingly dynamically registered, so if there's
>>> not enough room for it, it won't work — I fell into this pitfall the other
>>> day :)
>>> 
>>> Cheers,
>>> Jean
>>> 
>>> 
>>> 

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