diff options
Diffstat (limited to '')
-rw-r--r-- | bsps/microblaze/shared/dev/serial/uartlite_l.c | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/bsps/microblaze/shared/dev/serial/uartlite_l.c b/bsps/microblaze/shared/dev/serial/uartlite_l.c new file mode 100644 index 0000000000..5acbd6c505 --- /dev/null +++ b/bsps/microblaze/shared/dev/serial/uartlite_l.c @@ -0,0 +1,99 @@ +/****************************************************************************** +* Copyright (C) 2002 - 2020 Xilinx, Inc. All rights reserved. +* SPDX-License-Identifier: MIT +******************************************************************************/ + +/****************************************************************************/ +/** +* +* @file xuartlite_l.c +* @addtogroup uartlite_v3_5 +* @{ +* +* This file contains low-level driver functions that can be used to access the +* device. The user should refer to the hardware device specification for more +* details of the device operation. + +* <pre> +* MODIFICATION HISTORY: +* +* Ver Who Date Changes +* ----- ---- -------- ----------------------------------------------- +* 1.00b rpm 04/25/02 First release +* 1.12a rpm 07/16/07 Fixed arg type for RecvByte +* 2.00a ktn 10/20/09 The macros have been renamed to remove _m from the name. +* 3.2 sk 11/10/15 Used UINTPTR instead of u32 for Baseaddress CR# 867425. +* Changed the prototypes of XUartLite_SendByte, +* XUartLite_RecvByte APIs. +* </pre> +* +******************************************************************************/ + +/***************************** Include Files *********************************/ + +#ifndef __rtems__ +#include "xuartlite_l.h" +#else +#include <dev/serial/uartlite_l.h> +#endif /* __rtems__ */ + +/************************** Constant Definitions *****************************/ + + +/**************************** Type Definitions *******************************/ + + +/***************** Macros (Inline Functions) Definitions *********************/ + + +/************************** Function Prototypes ******************************/ + + +/************************** Variable Prototypes ******************************/ + + +/****************************************************************************/ +/** +* +* This functions sends a single byte using the UART. It is blocking in that it +* waits for the transmitter to become non-full before it writes the byte to +* the transmit register. +* +* @param BaseAddress is the base address of the device +* @param Data is the byte of data to send +* +* @return None. +* +* @note None. +* +******************************************************************************/ +void XUartLite_SendByte(UINTPTR BaseAddress, u8 Data) +{ + while (XUartLite_IsTransmitFull(BaseAddress)); + + XUartLite_WriteReg(BaseAddress, XUL_TX_FIFO_OFFSET, Data); +} + + +/****************************************************************************/ +/** +* +* This functions receives a single byte using the UART. It is blocking in that +* it waits for the receiver to become non-empty before it reads from the +* receive register. +* +* @param BaseAddress is the base address of the device +* +* @return The byte of data received. +* +* @note None. +* +******************************************************************************/ +u8 XUartLite_RecvByte(UINTPTR BaseAddress) +{ + while (XUartLite_IsReceiveEmpty(BaseAddress)); + + return (u8)XUartLite_ReadReg(BaseAddress, XUL_RX_FIFO_OFFSET); +} + +/** @} */
\ No newline at end of file |