🎉 init:增加单位转换服务函数

HJ232_Source/source/Application/Unit_Convert/Unit_Convert_Service.c

+#include "Unit_Convert_Service.h"
+
+
+
+
+
+
+#define   GUI_DISP_MODE_NORMAL              0x00    //正常
+#define   GUI_DISP_MODE_NEGATIVE            0x01    //负数
+
+/**
+ * @brief 公里转换英里服务函数
+ * @return 英里 精度 1
+ */
+uint32_t Unit_Conv_km_To_mile(unsigned long km)
+{
+	return km * 621 / 1000; //mile = km *  3937 / 6336
+}
+
+
+

HJ232_Source/source/Application/Unit_Convert/Unit_Convert_Service.h

+#ifndef UNIT_CONVERT_SERVICE_H
+#define UNIT_CONVERT_SERVICE_H
+#include "common.h"
+
+
+
+
+
+extern uint32_t Unit_Conv_km_To_mile(unsigned long km);
+
+
+
+#endif
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