refactor: 精简R8裸机工程并补强调试链路

Core/Src/main.c

@@ -364,7 +364,9 @@ void Error_Handler(void)
 {
   /* USER CODE BEGIN Error_Handler_Debug */
   /* User can add his own implementation to report the HAL error return state */
+  SEGGER_RTT_WriteString(0, "\r\nError_Handler hit\r\n");
   __disable_irq();
+  __BKPT(0);
   while (1)
   {
   }