91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/*
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* File : serial.c
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://openlab.rt-thread.com/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2006-03-13 Bernard first version
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* 2009-04-20 yi.qiu modified according bernard's stm32 version
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* 2010-10-6 wangmeng added sep4020 surpport
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*/
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#ifndef __SERIAL_H__
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#define __SERIAL_H__
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#include <sep4020.h>
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#define USTAT_RCV_READY 0x01 /* receive data ready */
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#define USTAT_TXB_EMPTY 0x40 /* tx buffer empty */
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#define BPS 115200 /* serial baudrate */
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#define UART_RX_BUFFER_SIZE 64
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#define UART_TX_BUFFER_SIZE 64
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/*For sep4020's uart have several secondary function*/
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/*we use union to decribe it*/
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union dlbl_fifo
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{
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rt_uint32_t dlbl;
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rt_uint32_t rxfifo;
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rt_uint32_t txfifo;
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};
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union dlbh_ier
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{
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rt_uint32_t dlbh;
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rt_uint32_t ier;
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};
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union iir_fcr
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{
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rt_uint32_t iir;
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rt_uint32_t fcr;
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};
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struct serial_int_rx
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{
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rt_uint8_t rx_buffer[UART_RX_BUFFER_SIZE];
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rt_uint32_t read_index, save_index;
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};
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struct serial_int_tx
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{
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rt_uint8_t tx_buffer[UART_TX_BUFFER_SIZE];
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rt_uint32_t write_index, save_index;
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};
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typedef struct uartport
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{
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union dlbl_fifo dlbl_fifo;
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union dlbh_ier dlbh_ier;
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union iir_fcr iir_fcr;
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rt_uint32_t lcr;
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rt_uint32_t mcr;
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rt_uint32_t lsr;
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rt_uint32_t msr;
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}uartport;
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struct serial_device
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{
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uartport* uart_device;
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/* rx structure */
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struct serial_int_rx* int_rx;
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/* tx structure */
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struct serial_int_tx* int_tx;
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};
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rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial);
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void rt_hw_serial_isr(rt_device_t device);
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#endif
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