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