On Wed, 23 Apr 2025 at 14:06, 小马驹 <1353455...@qq.com> wrote: > > When I use mps2-an385 model on qemu, I found that it seems not support > getchar. I used the FreeRTOS official demo(mps2-an385-GCC-QEMU), then I tried > to use UART to receive input strings from QEMU terminal, so I tried to use > getchar() function. However, some errors occurred in QEMU as shown below: > qemu: fatal: Lockup: can't escalate 3 to HardFault (current priority -1) > Is it means there are something wrong in the emulated board? And how to solve > the problem?
The UARTs on that board work fine. The error message means your guest code took a fatal exception (i.e. it crashed). You should start by debugging to find out why the crash happened, which might or might not be related to the UARTs specifically. thanks -- PMM
