arm: add uart echo app

arm/hal/uart/xuartlite_i.h

@@ -0,0 +1,100 @@
+/******************************************************************************
+* Copyright (C) 2002 - 2022 Xilinx, Inc.  All rights reserved.
+* SPDX-License-Identifier: MIT
+******************************************************************************/
+
+/****************************************************************************/
+/**
+*
+* @file xuartlite_i.h
+* @addtogroup uartlite_v3_7
+* @{
+*
+* Contains data which is shared between the files of the XUartLite component.
+* It is intended for internal use only.
+*
+* <pre>
+* MODIFICATION HISTORY:
+*
+* Ver   Who  Date     Changes
+* ----- ---- -------- -----------------------------------------------
+* 1.00a ecm  08/31/01 First release
+* 1.00b jhl  02/21/02 Reparitioned the driver for smaller files
+* 1.00b rpm  04/24/02 Moved register definitions to xuartlite_l.h and
+*                     updated macro naming convention
+* 2.00a ktn  10/20/09 The macros have been renamed to remove _m from
+*		      the name. XUartLite_mClearStats macro is removed and
+*		      XUartLite_ClearStats function should be used in its place.
+* 3.6   rna  02/19/21 Added 'XUartLite_GetSR' internal API.
+* </pre>
+*
+*****************************************************************************/
+
+#ifndef XUARTLITE_I_H /* prevent circular inclusions */
+#define XUARTLITE_I_H /* by using protection macros */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/***************************** Include Files ********************************/
+
+#include "xuartlite.h"
+#include "xuartlite_l.h"
+
+/************************** Constant Definitions ****************************/
+
+/**************************** Type Definitions ******************************/
+
+/***************** Macros (Inline Functions) Definitions ********************/
+
+/****************************************************************************
+*
+* Update the statistics of the instance.
+*
+* @param	InstancePtr is a pointer to the XUartLite instance.
+* @param	StatusRegister contains the contents of the UART status
+*		register to update the statistics with.
+*
+* @return	None.
+*
+* @note
+*
+* Signature: void XUartLite_UpdateStats(XUartLite *InstancePtr,
+*						u32 StatusRegister)
+*
+*****************************************************************************/
+#define XUartLite_UpdateStats(InstancePtr, StatusRegister)	\
+{								\
+	if ((StatusRegister) & XUL_SR_OVERRUN_ERROR)		\
+	{							\
+		(InstancePtr)->Stats.ReceiveOverrunErrors++;	\
+	}							\
+	if ((StatusRegister) & XUL_SR_PARITY_ERROR)		\
+	{							\
+		(InstancePtr)->Stats.ReceiveParityErrors++;	\
+	}							\
+	if ((StatusRegister) & XUL_SR_FRAMING_ERROR)		\
+	{							\
+		(InstancePtr)->Stats.ReceiveFramingErrors++;	\
+	}							\
+}
+
+/************************** Variable Definitions ****************************/
+
+/* the configuration table */
+extern XUartLite_Config XUartLite_ConfigTable[];
+
+/************************** Function Prototypes *****************************/
+
+unsigned int XUartLite_SendBuffer(XUartLite *InstancePtr);
+unsigned int XUartLite_ReceiveBuffer(XUartLite *InstancePtr);
+u8 XUartLite_GetSR(XUartLite *InstancePtr);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif		/* end of protection macro */
+
+/** @} */