Error: ..\..\Middlewares\FreeRTOS\portable\RVDS\ARM_CM4F\port.c, 807

这个错误是在 "port.c" 文件的第807行发生的。该错误是由于操作数类型不匹配引起的。具体来说，这个错误涉及到 "UnDefOT" 和 "Constant" 两种操作数类型间的不匹配。 要解决这个错误，你需要检查 "port.c" 文件的第807行，并查看与该行相关的操作数类型是否匹配。你还需要检查 "main.h" 文件中的 "#include "stm32f1xx_hal.h"" 是否正确，因为这也可能导致错误发生。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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