2022-11-10 22:22:48 +08:00
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/*
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* Copyright : (C) 2022 Phytium Information Technology, Inc.
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* All Rights Reserved.
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*
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* This program is OPEN SOURCE software: you can redistribute it and/or modify it
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* under the terms of the Phytium Public License as published by the Phytium Technology Co.,Ltd,
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* either version 1.0 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the Phytium Public License for more details.
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*
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*
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* FilePath: early_uart.c
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* Date: 2022-02-11 13:33:28
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* LastEditTime: 2022-02-17 17:59:26
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2023-05-11 10:25:21 +08:00
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* Description: This file is for
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2022-11-10 22:22:48 +08:00
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*
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* Modify History:
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* Ver Who Date Changes
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* ----- ------ -------- --------------------------------------
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*/
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/***************************** Include Files *********************************/
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#include "fkernel.h"
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#include "fio.h"
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#include "fparameters.h"
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#include "fearly_uart.h"
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/**************************** Type Definitions *******************************/
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/************************** Constant Definitions *****************************/
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/************************** Variable Definitions *****************************/
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/***************** Macros (Inline Functions) Definitions *********************/
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/*****************************************************************************/
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void OutByte(s8 byte)
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{
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/* wait until tx fifo is not full */
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while ((FtIn32(EARLY_UART_UARTFR) & EARLY_UART_TXFF) == EARLY_UART_TXFF)
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{
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}
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FtOut32(EARLY_UART_UARTDR, (((u32)byte) & EARLY_UART_DATA_MASK));
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}
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char GetByte(void)
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{
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/* wait until rx fifo is not empty */
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while ((FtIn32(EARLY_UART_UARTFR) & EARLY_UART_RXFE) == EARLY_UART_RXFE)
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{
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}
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return (char)(EARLY_UART_DATA_MASK & FtIn32(EARLY_UART_UARTDR));
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}
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