246 lines
6.7 KiB
C
246 lines
6.7 KiB
C
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/*
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* This file is part of FH8620 BSP for RT-Thread distribution.
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*
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* Copyright (c) 2016 Shanghai Fullhan Microelectronics Co., Ltd.
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* All rights reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Visit http://www.fullhan.com to get contact with Fullhan.
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*
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* Change Logs:
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* Date Author Notes
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*/
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#ifndef FH_UART_H_
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#define FH_UART_H_
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/****************************************************************************
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* #include section
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* add #include here if any
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***************************************************************************/
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#include "fh_def.h"
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/****************************************************************************
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* #define section
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* add constant #define here if any
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***************************************************************************/
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#define UART_RBR RBRTHRDLL
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#define UART_THR RBRTHRDLL
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#define UART_DLL RBRTHRDLL
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#define UART_DLH DLHIER
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#define UART_IER DLHIER
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#define UART_IIR IIRFCR
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#define UART_FCR IIRFCR
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/* LSR register bits */
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#define UART_LSR_DR (1 << 0)
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#define UART_LSR_OE (1 << 1)
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#define UART_LSR_PE (1 << 2)
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#define UART_LSR_FE (1 << 3)
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#define UART_LSR_BI (1 << 4)
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#define UART_LSR_THER (1 << 5)
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#define UART_LST_TEMT (1 << 6)
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#define UART_LSR_RFE (1 << 7)
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/* LCR register bits */
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#define UART_LCR_DLS5 0x00
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#define UART_LCR_DLS6 0x01
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#define UART_LCR_DLS7 0x02
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#define UART_LCR_DLS8 0x03
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#define UART_LCR_STOP1 0
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#define UART_LCR_STOP2 (1 << 2)
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#define UART_LCR_PEN (1 << 3)
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#define UART_LCR_EVEN (1 << 4)
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#define UART_LCR_SP (1 << 5)
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#define UART_LCR_BC (1 << 6)
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#define UART_LCR_DLAB (1 << 7)
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/* MCR register bits */
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#define UART_MCR_DTR (1 << 0)
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#define UART_MCR_RTS (1 << 1)
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#define UART_MCR_OUT1 (1 << 2)
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#define UART_MCR_OUT2 (1 << 3)
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#define UART_MCR_LB (1 << 4)
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#define UART_MCR_AFCE (1 << 5)
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#define UART_MCR_SIRE (1 << 6)
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/* FCR register bits */
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#define UART_FCR_FIFOE (1 << 0)
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#define UART_FCR_RFIFOR (1 << 1)
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#define UART_FCR_XFIFOR (1 << 2)
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#define UART_FCR_DMAM (1 << 3)
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#define UART_FCR_TET_EMPTY (0x00 << 4)
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#define UART_FCR_TET_TWO (0x01 << 4)
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#define UART_FCR_TET_1_4 (0x02 << 4)
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#define UART_FCR_TET_1_2 (0x03 << 4)
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#define UART_FCR_RT_ONE (0x00 << 6)
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#define UART_FCR_RT_1_4 (0x01 << 6)
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#define UART_FCR_RT_1_2 (0x02 << 6)
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#define UART_FCR_RT_L2 (0x03 << 6)
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/* IER register bits */
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#define UART_IER_ERBFI (1 << 0)
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#define UART_IER_ETBEI (1 << 1)
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#define UART_IER_ELSI (1 << 2)
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#define UART_IER_EDSSI (1 << 3)
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#define UART_IER_PTIME (1 << 7)
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/* USR register bits */
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#define UART_USR_BUSY (1 << 0)
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#define UART_USR_TFNF (1 << 1)
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#define UART_USR_TFE (1 << 2)
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#define UART_USR_RNFE (1 << 3)
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#define UART_USR_RFE (1 << 4)
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/* IIR register bits */
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#define UART_IIR_RIID_MASK 0x0f
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#define UART_IIR_MODEM 0x00
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#define UART_IIR_NOINT 0x01
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#define UART_IIR_THREMPTY 0x02
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#define UART_IIR_RDATD 0x04
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#define UART_IIR_RLINEST 0x06
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#define UART_IIR_BUSY 0x07
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#define UART_IIR_CHRTOUT 0x0c
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#define UART_IIR_FIFOSE (0x03 << 6)
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//uart baudrate cofig
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//#define UART_CLOCK_FREQ (27000000) //27MHZ
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//
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//#define DIV(n) (((UART_CLOCK_FREQ/(n))+8)/16)
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/****************************************************************************
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* ADT section
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* add Abstract Data Type definition here
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***************************************************************************/
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typedef struct {
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RwReg RBRTHRDLL; /* UART_RBR, UART_THR, UART_DLL */
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RwReg DLHIER; /* UART_DLH, UART_IER */
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RwReg IIRFCR; /* UART_IIR, UART_FCR */
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RwReg UART_LCR; /*(0x000c) */
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RwReg UART_MCR; /*(0x0010) */
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RwReg UART_LSR; /*(0x0014) */
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RwReg UART_MSR; /*(0x0018) */
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RwReg UART_SCR; /*(0x001c) */
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RwReg reserved[20];
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RwReg UART_FAR; /* (0x0070) */
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RwReg UART_TFR; /* (0x0074) */
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RwReg UART_RFW; /* (0x0078) */
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RwReg UART_USR; /* (0x007c) */
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RwReg UART_TFL; /* (0x0080) */
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RwReg UART_RFL; /* (0x0084) */
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RwReg UART_SRR; /* (0x0088) */
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RwReg reserved1[3];
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RwReg UART_SFE; /* (0x0098) */
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RwReg UART_SRT; /* (0x009c) */
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RwReg UART_STET; /* (0x00a0) */
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RwReg UART_HTX; /* (0x00a4) */
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RwReg UART_DMASA; /* (0x00a8) */
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RwReg reserved2[18];
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RwReg UART_CPR; /* (0x00f4) */
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RwReg UART_UCV; /* (0x00f8) */
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RwReg UART_CTR; /* (0x00fc) */
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}uart;
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struct fh_uart {
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uart *uart_port;
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int irq;
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};
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enum data_bits {
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UART_DATA_BIT5 = 0,
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UART_DATA_BIT6 = 1,
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UART_DATA_BIT7 = 2,
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UART_DATA_BIT8 = 3
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};
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enum stop_bits {
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UART_STOP_BIT1 = 0,
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UART_STOP_BIT1_5 = 1,
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UART_STOP_BIT2 = 2
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};
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enum parity {
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UART_PARITY_NONE = 0,
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UART_PARITY_EVEN = 1,
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UART_PARITY_ODD = 2,
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UART_PARITY_ST = 3 /* Stick Parity */
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};
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#define UART_CLOCK_FREQ (30000000) //30MHZ
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typedef enum enum_uart_baudrate{
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BAUDRATE_9600 = (((UART_CLOCK_FREQ/9600)+8)/16),
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BAUDRATE_19200 = (((UART_CLOCK_FREQ/19200)+8)/16),
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BAUDRATE_38400 = (((UART_CLOCK_FREQ/38400)+8)/16),
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BAUDRATE_57600 = (((UART_CLOCK_FREQ/57600)+8)/16),
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BAUDRATE_115200 = (((UART_CLOCK_FREQ/115200)+8)/16),
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BAUDRATE_194000 = (((UART_CLOCK_FREQ/194000)+8)/16),
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}uart_baudrate_e;
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/****************************************************************************
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* extern variable declaration section
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***************************************************************************/
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extern int uart_init(uart *port);
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extern UINT32 uart_get_status(uart *port);
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extern void uart_configure(uart *port, enum data_bits data_bit,
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enum stop_bits stop_bit, enum parity parity,
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UINT32 buard_rate, UINT32 uart_clk);
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extern int uart_enable_irq(uart *port, UINT32 mode);
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extern int uart_disable_irq(uart *port, UINT32 mode);
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extern UINT32 uart_get_iir_status(uart *port);
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extern UINT32 uart_get_line_status(uart *port);
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extern UINT32 uart_is_rx_ready(uart *port);
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extern UINT8 uart_getc(uart *port);
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extern void uart_putc(uart *port, UINT8 c);
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extern void uart_set_fifo_mode(uart *port, UINT32 fifo_mode);
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/****************************************************************************
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* section
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* add function prototype here if any
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***************************************************************************/
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#endif /* #ifndef _TIMER_ */
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