#ifndef __UART_H__
#define __UART_H__

#include "common.h"
#include "tim.h"

#define	UART1_CLEAR_RX_FLAG (SCON  &= ~0x01)
#define	UART2_CLEAR_RX_FLAG (S2CON &= ~0x01)
#define	UART3_CLEAR_RX_FLAG (S3CON &= ~0x01)
#define	UART4_CLEAR_RX_FLAG (S4CON &= ~0x01)

#define	UART1_CLEAR_TX_FLAG (SCON  &= ~0x02)
#define	UART2_CLEAR_TX_FLAG (S2CON &= ~0x02)
#define	UART3_CLEAR_TX_FLAG (S3CON &= ~0x02)
#define	UART4_CLEAR_TX_FLAG (S4CON &= ~0x02)


#define UART1_GET_RX_FLAG   (SCON  & 0x01)
#define UART2_GET_RX_FLAG   (S2CON & 0x01)
#define UART3_GET_RX_FLAG   (S3CON & 0x01)
#define UART4_GET_RX_FLAG   (S4CON & 0x01)
						    
#define UART1_GET_TX_FLAG   (SCON  & 0x02)
#define UART2_GET_TX_FLAG   (S2CON & 0x02)
#define UART3_GET_TX_FLAG   (S3CON & 0x02)
#define UART4_GET_TX_FLAG   (S4CON & 0x02)


typedef enum //枚举串口号
{
    UART_1,
    UART_2,
    UART_3,
    UART_4,
}UARTN_enum;

typedef enum //枚举串口引脚
{
	UART1_RX_P30, UART1_TX_P31,		//只能使用同一行的RX和TX引脚号。不允许混用
	UART1_RX_P36, UART1_TX_P37,		//例如:UART1_RX_P30,UART1_TX_P37。这样不行。
	UART1_RX_P16, UART1_TX_P17,
	UART1_RX_P43, UART1_TX_P44,
	
	UART2_RX_P10, UART2_TX_P11,
	UART2_RX_P46, UART2_TX_P47,
	
	UART3_RX_P00, UART3_TX_P01,
	UART3_RX_P50, UART3_TX_P51,
	
	UART4_RX_P02, UART4_TX_P03,
	UART4_RX_P52, UART4_TX_P53,	

	
}UARTPIN_enum;

extern uint8 busy[5];


void uart_init(UARTN_enum uart_n, UARTPIN_enum uart_rx_pin, UARTPIN_enum uart_tx_pin, uint32 baud,TIMN_enum tim_n);
void uart_putchar(UARTN_enum uart_n,uint8 dat);
void uart_putstr(UARTN_enum uart_n,uint8 *str);
void uart_putbuff(UARTN_enum uart_n,uint8 *p,uint32 len);


#endif