start to add lwip support

vendor/lwip/lpclwip/arch/lpc_arch.h

@@ -0,0 +1,93 @@
+/*
+ * @brief Architecture specific functions used with the LWIP examples
+ *
+ * @note
+ * Copyright(C) NXP Semiconductors, 2012
+ * All rights reserved.
+ *
+ * @par
+ * Software that is described herein is for illustrative purposes only
+ * which provides customers with programming information regarding the
+ * LPC products.  This software is supplied "AS IS" without any warranties of
+ * any kind, and NXP Semiconductors and its licensor disclaim any and
+ * all warranties, express or implied, including all implied warranties of
+ * merchantability, fitness for a particular purpose and non-infringement of
+ * intellectual property rights.  NXP Semiconductors assumes no responsibility
+ * or liability for the use of the software, conveys no license or rights under any
+ * patent, copyright, mask work right, or any other intellectual property rights in
+ * or to any products. NXP Semiconductors reserves the right to make changes
+ * in the software without notification. NXP Semiconductors also makes no
+ * representation or warranty that such application will be suitable for the
+ * specified use without further testing or modification.
+ *
+ * @par
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation is hereby granted, under NXP Semiconductors' and its
+ * licensor's relevant copyrights in the software, without fee, provided that it
+ * is used in conjunction with NXP Semiconductors microcontrollers.  This
+ * copyright, permission, and disclaimer notice must appear in all copies of
+ * this code.
+ */
+
+#ifndef __LPC_ARCH_H_
+#define __LPC_ARCH_H_
+
+#include "lwip/opt.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/** @defgroup NET_LWIP_ARCH Architecture specific functions used with the LWIP examples
+ * @ingroup NET_LWIP
+ * @{
+ */
+
+#if NO_SYS == 1
+/**
+ * @brief	Enable LWIP tick and interrupt
+ * @param	period	: Period of the systick clock
+ * @return	Nothing
+ * @note	This enables the systick interrupt and sets up the systick rate. This
+ * function is only used in standalone systems.
+ */
+void SysTick_Enable(uint32_t period);
+
+/**
+ * @brief	Disable LWIP tick
+ * @return	Nothing
+ * This disables the systick interrupt. This function is only used in
+ * standalone systems.
+ */
+void SysTick_Disable(void);
+
+/**
+ * @brief	Get the current systick time in milliSeconds
+ * @return	current systick time in milliSeconds
+ * @note	Returns the current systick time in milliSeconds. This function is only
+ * used in standalone systems.
+ */
+uint32_t SysTick_GetMS(void);
+
+#endif
+
+/**
+ * @brief	Delay for the specified number of milliSeconds
+ * @param	ms	: Time in milliSeconds to delay
+ * @return	Nothing
+ * @note	For standalone systems. This function will block for the specified
+ * number of milliSconds. For RTOS based systems, this function will delay
+ * the task by the specified number of milliSeconds.
+ */
+void msDelay(uint32_t ms);
+
+/**
+ * @}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __LPC_ARCH_H_ */