1 /******************************************************************************
3 * Copyright (C) 2002 - 2014 Xilinx, Inc. All rights reserved.
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16 * (a) running on a Xilinx device, or
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31 ******************************************************************************/
32 /****************************************************************************/
37 * This file contains low-level driver functions that can be used to access the
38 * device. The user should refer to the hardware device specification for more
39 * details of the device operation.
42 * MODIFICATION HISTORY:
44 * Ver Who Date Changes
45 * ----- ---- -------- -----------------------------------------------
46 * 1.00b rpm 04/25/02 First release
47 * 1.12a rpm 07/16/07 Fixed arg type for RecvByte
48 * 2.00a ktn 10/20/09 The macros have been renamed to remove _m from the name.
51 ******************************************************************************/
53 /***************************** Include Files *********************************/
55 #include "xuartlite_l.h"
57 /************************** Constant Definitions *****************************/
60 /**************************** Type Definitions *******************************/
63 /***************** Macros (Inline Functions) Definitions *********************/
66 /************************** Function Prototypes ******************************/
69 /************************** Variable Prototypes ******************************/
72 /****************************************************************************/
75 * This functions sends a single byte using the UART. It is blocking in that it
76 * waits for the transmitter to become non-full before it writes the byte to
77 * the transmit register.
79 * @param BaseAddress is the base address of the device
80 * @param Data is the byte of data to send
86 ******************************************************************************/
87 void XUartLite_SendByte(u32 BaseAddress, u8 Data)
89 while (XUartLite_IsTransmitFull(BaseAddress));
91 XUartLite_WriteReg(BaseAddress, XUL_TX_FIFO_OFFSET, Data);
95 /****************************************************************************/
98 * This functions receives a single byte using the UART. It is blocking in that
99 * it waits for the receiver to become non-empty before it reads from the
102 * @param BaseAddress is the base address of the device
104 * @return The byte of data received.
108 ******************************************************************************/
109 u8 XUartLite_RecvByte(u32 BaseAddress)
111 while (XUartLite_IsReceiveEmpty(BaseAddress));
113 return (u8)XUartLite_ReadReg(BaseAddress, XUL_RX_FIFO_OFFSET);