实现串口驱动，移植方便

HAL/Inc/hal_delay.h

@@ -0,0 +1,32 @@
+/* USER CODE BEGIN Header */
+/**
+  ******************************************************************************
+  * @file           : hal_delay.h
+  * @brief          : Delay hardware abstraction layer header file
+  ******************************************************************************
+  */
+/* USER CODE END Header */
+
+#ifndef HAL_DELAY_H
+#define HAL_DELAY_H
+
+#include <stdint.h>
+
+/**
+ * @brief Initialize delay module
+ */
+void hal_delay_init(void);
+
+/**
+ * @brief Delay in milliseconds
+ * @param ms: Delay time in milliseconds
+ */
+void hal_delay_ms(uint32_t ms);
+
+/**
+ * @brief Delay in microseconds
+ * @param us: Delay time in microseconds
+ */
+void hal_delay_us(uint32_t us);
+
+#endif /* HAL_DELAY_H */