rt-thread/bsp/ls1cdev/drivers/drv_uart.h

/*
 * File      : drv_uart.h
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006 - 2012, RT-Thread Development Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Change Logs:
 * Date           Author       Notes
 * 2018-05-08     zhuangwei    the first version
 */

#ifndef __DRV_UART_H__
#define __DRV_UART_H__

#include "ls1c.h"

#define DEV_CLK 252000000 // 252MHz
#define UART_BAUDRATE 115200

#define UART0_BASE          0xBFE40000
//#define UART0_1_BASE      0xBFE41000
#define UART1_BASE          0xBFE44000
#define UART2_BASE          0xBFE48000
#define UART3_BASE          0xBFE4C000
#define UART4_BASE          0xBFE4C400
#define UART5_BASE          0xBFE4C500
#define UART6_BASE          0xBFE4C600
#define UART7_BASE          0xBFE4C700
#define UART8_BASE          0xBFE4C800
#define UART9_BASE          0xBFE4C900
#define UART10_BASE         0xBFE4Ca00
#define UART11_BASE         0xBFE4Cb00

/* UART registers */
#define UART_DAT(base)      __REG8(base + 0x00)
#define UART_IER(base)      __REG8(base + 0x01)
#define UART_IIR(base)      __REG8(base + 0x02)
#define UART_FCR(base)      __REG8(base + 0x02)
#define UART_LCR(base)      __REG8(base + 0x03)
#define UART_MCR(base)      __REG8(base + 0x04)
#define UART_LSR(base)      __REG8(base + 0x05)
#define UART_MSR(base)      __REG8(base + 0x06)

#define UART_LSB(base)      __REG8(base + 0x00)
#define UART_MSB(base)      __REG8(base + 0x01)

/* UART0 registers */
#define UART0_DAT           __REG8(UART0_BASE + 0x00)
#define UART0_IER           __REG8(UART0_BASE + 0x01)
#define UART0_IIR           __REG8(UART0_BASE + 0x02)
#define UART0_FCR           __REG8(UART0_BASE + 0x02)
#define UART0_LCR           __REG8(UART0_BASE + 0x03)
#define UART0_MCR           __REG8(UART0_BASE + 0x04)
#define UART0_LSR           __REG8(UART0_BASE + 0x05)
#define UART0_MSR           __REG8(UART0_BASE + 0x06)

#define UART0_LSB           __REG8(UART0_BASE + 0x00)
#define UART0_MSB           __REG8(UART0_BASE + 0x01)

/* UART1 registers */
#define UART1_DAT           __REG8(UART1_BASE + 0x00)
#define UART1_IER           __REG8(UART1_BASE + 0x01)
#define UART1_IIR           __REG8(UART1_BASE + 0x02)
#define UART1_FCR           __REG8(UART1_BASE + 0x02)
#define UART1_LCR           __REG8(UART1_BASE + 0x03)
#define UART1_MCR           __REG8(UART1_BASE + 0x04)
#define UART1_LSR           __REG8(UART1_BASE + 0x05)
#define UART1_MSR           __REG8(UART1_BASE + 0x06)

#define UART1_LSB           __REG8(UART1_BASE + 0x00)
#define UART1_MSB           __REG8(UART1_BASE + 0x01)

/* UART interrupt enable register value */
#define UARTIER_IME     (1 << 3)
#define UARTIER_ILE     (1 << 2)
#define UARTIER_ITXE    (1 << 1)
#define UARTIER_IRXE    (1 << 0)

/* UART line control register value */
#define UARTLCR_DLAB    (1 << 7)
#define UARTLCR_BCB     (1 << 6)
#define UARTLCR_SPB     (1 << 5)
#define UARTLCR_EPS     (1 << 4)
#define UARTLCR_PE      (1 << 3)
#define UARTLCR_SB      (1 << 2)

/* UART line status register value */
#define UARTLSR_ERROR   (1 << 7)
#define UARTLSR_TE      (1 << 6)
#define UARTLSR_TFE     (1 << 5)
#define UARTLSR_BI      (1 << 4)
#define UARTLSR_FE      (1 << 3)
#define UARTLSR_PE      (1 << 2)
#define UARTLSR_OE      (1 << 1)
#define UARTLSR_DR      (1 << 0)

void rt_hw_uart_init(void);


#endif