uart.h

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/*
 *  This file contains definitions for LatticeMico32 UART
 *
 *  COPYRIGHT (c) 1989-1999.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.org/license/LICENSE.
 *
 *  Jukka Pietarinen <jukka.pietarinen@mrf.fi>, 2008,
 *  Micro-Research Finland Oy
 */
 
#ifndef _BSPUART_H
#define _BSPUART_H
 
void BSP_uart_init(int baud);
 
/* Receive buffer register / transmit holding register */
 
#define LM32_UART_RBR      (0x0000)
 
/* Interrupt enable register */
 
#define LM32_UART_IER      (0x0004)
#define LM32_UART_IER_RBRI (0x0001)
#define LM32_UART_IER_THRI (0x0002)
#define LM32_UART_IER_RLSI (0x0004)
#define LM32_UART_IER_MSI  (0x0008)
 
/* Interrupt identification register */
 
#define LM32_UART_IIR      (0x0008)
#define LM32_UART_IIR_STAT (0x0001)
#define LM32_UART_IIR_ID0  (0x0002)
#define LM32_UART_IIR_ID1  (0x0004)
 
/* Line control register */
 
#define LM32_UART_LCR      (0x000C)
#define LM32_UART_LCR_WLS0 (0x0001)
#define LM32_UART_LCR_WLS1 (0x0002)
#define LM32_UART_LCR_STB  (0x0004)
#define LM32_UART_LCR_PEN  (0x0008)
#define LM32_UART_LCR_EPS  (0x0010)
#define LM32_UART_LCR_SP   (0x0020)
#define LM32_UART_LCR_SB   (0x0040)
#define LM32_UART_LCR_5BIT (0)
#define LM32_UART_LCR_6BIT (LM32_UART_LCR_WLS0)
#define LM32_UART_LCR_7BIT (LM32_UART_LCR_WLS1)
#define LM32_UART_LCR_8BIT (LM32_UART_LCR_WLS1 | LM32_UART_LCR_WLS0)
 
/* Modem control register */
 
#define LM32_UART_MCR      (0x0010)
#define LM32_UART_MCR_DTR  (0x0001)
#define LM32_UART_MCR_RTS  (0x0002)
 
/* Line status register */
 
#define LM32_UART_LSR      (0x0014)
#define LM32_UART_LSR_DR   (0x0001)
#define LM32_UART_LSR_OE   (0x0002)
#define LM32_UART_LSR_PE   (0x0004)
#define LM32_UART_LSR_FE   (0x0008)
#define LM32_UART_LSR_BI   (0x0010)
#define LM32_UART_LSR_THRE (0x0020)
#define LM32_UART_LSR_TEMT (0x0040)
 
/* Modem status register */
 
#define LM32_UART_MSR      (0x0018)
#define LM32_UART_MSR_DCTS (0x0001)
#define LM32_UART_MSR_DDSR (0x0002)
#define LM32_UART_MSR_TERI (0x0004)
#define LM32_UART_MSR_DDCD (0x0008)
#define LM32_UART_MSR_CTS  (0x0010)
#define LM32_UART_MSR_DSR  (0x0020)
#define LM32_UART_MSR_RI   (0x0040)
#define LM32_UART_MSR_DCD  (0x0000)
 
/* Baud-rate divisor register */
 
#define LM32_UART_DIV      (0x001C)
 
#endif /* _BSPUART_H */