#include "rs485.h"	 
#include "delay.h"

#include "readdevicedata.h"
#include "devicegpioinit.h"
#include "gpio.h"


#define		SEND_MAX_NUM	 200
u8	share_sendbuf[SEND_MAX_NUM]={0};
/******************************************
 * func:    RS485_Usart_Init
 * desc:    RS485_Usart_Init
 * input:   system_BaudRate
 * output:  none
 * return:  none
 *****************************************/
void RS485_Usart_Init(uint8  BaudRateCode,uint8 Parity)
{ 
	uint32  system_BaudRate;
	
	UART_SInitTypeDef UART_para;
  CMU_ClocksType CMU_Clocks;
	
	
	CMU_PERCLK_SetableEx(PADCLK, ENABLE);
	AltFunIO(RS485_TXD_EN_PIN_GROUP, RS485_TXD_EN_PIN_NUM, ALTFUN_NORMAL);    
  AltFunIO(RS485_RXD_EN_PIN_GROUP, RS485_RXD_EN_PIN_NUM , ALTFUN_NORMAL); 
//--------------------------------------------------------------------------------
	
	UART_para.BaudRate = BaudRateCode;//²¨ÌØÂÊ
	UART_para.StopBit = OneBit;			//ֹͣλ
	UART_para.DataBit = Eight8Bit;	//Êý¾ÝλÊý
	UART_para.ParityBit = Parity;			//ÆæżУÑé

	CMU_GetClocksFreq(&CMU_Clocks);    
	UART_SInit(UART1, &UART_para,&CMU_Clocks);	//³õʼ»¯uart	

//	UARTx_IER_RXBF_IE_Setable(UART1, ENABLE);//½ÓÊÕ»º´æÂúÖжÏʹÄÜ ÐèҪʹÓýÓÊÕÖжϴò¿ª´Ë´¦ÉèÖÃ
//	UARTx_IER_TXSE_IE_Setable(UART1, ENABLE)£»//·¢ËÍ»º´æ¿ÕÇÒ·¢ËÍÒÆλ¼Ä´æÆ÷¿ÕÖжÏʹÄÜ ÐèҪʹÓ÷¢ËÍÖжϴò¿ª´Ë´¦ÉèÖÃ
	
	NVIC_DisableIRQ(UART1_IRQn);
//		NVIC_SetPriority(UART1_IRQn,2);//ÖжÏÓÅÏȼ¶ÅäÖÃ
//		NVIC_EnableIRQ(UART1_IRQn);	
	
	UARTx_CSR_RXEN_Setable(UART1, ENABLE);  //´ò¿ª½ÓÊÕʹÄÜ
	UARTx_CSR_TXEN_Setable(UART1, ENABLE);  //´ò¿ª·¢ËÍʹÄÜ
	
	UARTx_ISR_RXBF_Clr(UART1);

}


/******************************************
 * func:    RS485_Send_Data
 * desc:    send data by RS485
 * input:   USARTx - select USART port , buf - send buffer , len - data length
 * output:  none
 * return:  none
 *****************************************/
void RS485_Send_Data(uint8 *buf,uint16 len)
{
	uint16 t;
	RS485_RE_H;
			
	for(t=0;t<len;t++)		  //send data
	{	
		UARTx_TXBUF_Write(UART4, buf[t]);		//½«·¢ËÍÊý¾ÝдÈë·¢ËͼĴæÆ÷
		while(RESET == UARTx_ISR_TXSE_Chk(UART4));	//µÈ´ý·¢ËÍÍê³É
	}	 
 
	while(RESET == UARTx_ISR_TXSE_Chk(UART4));	//µÈ´ý·¢ËÍÍê³É
	
	RS485_RE_L;
}

/******************************************
 * func:    RS485_Receive_Data
 * desc:    get received data from RS485
 * input:   buf - receive buffer,len - data length
 * output:  none
 * return:  none
 *****************************************/
void RS485_Receive_Data(uint8 * recbuf, uint8 *rec485buffer, uint8 len)
{
	uint8 i=0;
				              
	for(i = 0;i < len;i ++)
	{
		recbuf[i] = rec485buffer[i];	
	}		
}


/******************************************
 * func:    UART1_IRQHandler
 * desc:    UART1_IRQHandler
 * input:   
 * output:  none
 * return:  none
 *****************************************/
//void UART1_IRQHandler(void)
//{
//  u8 RX_dat;  

// if((ENABLE == UARTx_IER_RXBF_IE_Getable(UART1)) &&(SET ==UARTx_ISR_RXBF_Chk(UART1)))
//  { 
//		UARTx_ISR_RXBF_Clr(UART1);
//    RX_dat=UARTx_RXBUF_Read(UART1);//½ÓÊÕÖжϱêÖ¾½ö¿Éͨ¹ý¶ÁÈ¡RXBUF¼Ä´æÆ÷Çå³ý

//		LLJ_Msg.UartBuff[LLJ_Msg.WritePtr] = RX_dat;
//		LLJ_Msg.WritePtr = (LLJ_Msg.WritePtr + 1) & 0xffff;		
//  } 
//	

//}