But I just write getchar() in the demo's main_blinky() function without any other order, I just keep the original UART address configuration in demo and annotation other codes, however, the error still occurred. The program can enter the main_blinky() successfully but can't excute getchar().
?????? 1353455...@qq.com ------------------ ???????? ------------------ ??????: "Peter Maydell"<peter.mayd...@linaro.org>; ????????: 2025??4??28??(??????) ????8:40 ??????: "??????"<1353455...@qq.com>; ????: "qemu-devel"<qemu-devel@nongnu.org>; ????: Re: Whether the qemu mps2-an385 model support getchar? 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
