#ifndef	__RS485__H
#define	__RS485__H

//*************************************************************
//RS485_RE/DE初始化PB3/PB4
#define	RS485_GpioInit()	do{                     \
    GPIO_Init(GPIOB, GPIO_Pin_3, 1, IO_OUT_PP);     \
    GPIO_Init(GPIOB, GPIO_Pin_4, 1, IO_OUT_PP);     \
}while(0)
//RS485_RE输出控制
#define	RS485_ReLow()   GPIO_ClrBit(GPIOB, GPIO_Pin_3)
#define	RS485_ReHigh()  GPIO_SetBit(GPIOB, GPIO_Pin_3)
#define RS485_ReSta()   GPIO_ReadPin(GPIOB, GPIO_Pin_3)

//RS485_DE输出控制
#define	RS485_DeHigh()	GPIO_SetBit(GPIOB, GPIO_Pin_4)
#define	RS485_DeLow()	GPIO_ClrBit(GPIOB, GPIO_Pin_4)
#define RS485_DeSta()   GPIO_ReadPin(GPIOB, GPIO_Pin_4)

//*************************************************************
enum
{
    RS485_SleepMode   = 1,  //DE=0,RE=1
    RS485_TxMode      = 2,  //DE=1,RE=0
    RS485_RxMode      = 3,  //DE=1,RE=1
};
#define RS485_Mode(Mode) do{ 		\
    if(Mode & 0x01) RS485_ReHigh(); \
    else            RS485_ReLow();  \
	if(Mode & 0x02) RS485_DeHigh(); \
    else            RS485_DeLow();  \
}while(0)

//*************************************************************
#define RS485_SendChar(ch)     UART_SendChar(M0P_UART0, ch)

//*************************************************************
#define RS485_Init()    do{                                                     \
    RS485_GpioInit();                                                           \
    UART_Init(UART0, UART_BOUND_Tab[UART_9600bps], 8, Stop1bit, UartDataOrAddr);\
}while(0)

#endif