#include "sys.h"		    
#include "BT.h"	 
#include "delay.h"
#include "string.h"
#include "mbrtu.h"
#include "para.h"
#include "sizhu_communication_protocol.h"
u8 BT_RX_BUFF[BT_RX_LENGTH];
//u8 BT_TX_BUFF[500];
u8  Data_send_flag=0;

void BT_data_clear( void )
{

	/*Çå³ý´®¿ÚÖеÄDMAÊý¾Ý*/
	DMA_Cmd(BT_DMARX_CH,DISABLE);
	DMA_SetCurrDataCounter(BT_DMARX_CH, BT_RX_LENGTH);
	DMA_Cmd(BT_DMARX_CH,ENABLE);
		
	
    
}

/*******************************************************************************
 * Function Name: RS485_GPIO_Init
 * Parameters: none
 * Return: none
 * Description: 
 ******************************************************************************/
void BT_RS485_GPIO_Init(void)
{
//  GPIO_InitTypeDef GPIO_InitStructure;
	
  
}



void BT_Usart_Init(uint32  system_BaudRate)
{  
		USART_InitTypeDef USART_InitStructure;
		DMA_InitTypeDef DMA_InitStructure; 
	
		RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3 , ENABLE);
		RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);	
			   
		USART_DeInit(BT_USARTNUM);
	
	
		USART_InitStructure.USART_BaudRate = system_BaudRate;
		USART_InitStructure.USART_WordLength = USART_WordLength_8b;//word length 8bit
		USART_InitStructure.USART_StopBits = USART_StopBits_1;//one stopbit
		USART_InitStructure.USART_Parity = USART_Parity_No;
		USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
		USART_InitStructure.USART_Mode =USART_Mode_Rx | USART_Mode_Tx;
		USART_Init(BT_USARTNUM, &USART_InitStructure); //initialize USART

	
		///////////////////////
		/*DMA ½ÓÊÕ³õʼ»¯*/
		/*¿ªÆôDMAʱÖÓ*/
			
		DMA_DeInit(BT_DMARX_CH); 
		
		/*ÉèÖÃDMAÔ´£º´®¿ÚÊý¾Ý¼Ä´æÆ÷µØÖ·*/
		DMA_InitStructure.DMA_PeripheralBaseAddr =(u32)(&(BT_USARTNUM->DR)) ;	   

		/*ÄÚ´æµØÖ·(Òª´«ÊäµÄ±äÁ¿µÄÖ¸Õë)*/
		DMA_InitStructure.DMA_MemoryBaseAddr = (u32)(rs485_receive_g.RS485_BUF);

		/*·½Ïò£º´ÓË«Ïòµ½ÄÚ´æ*/		
		DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;	

		/*´«Êä´óСDMA_BufferSize=SENDBUFF_SIZE*/	
		DMA_InitStructure.DMA_BufferSize = REC_LENGTH;

		/*ÍâÉèµØÖ·²»Ôö*/	    
		DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; 

		/*ÄÚ´æµØÖ·×ÔÔö*/
		DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;	

		/*ÍâÉèÊý¾Ýµ¥Î»*/	
		DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;

		/*ÄÚ´æÊý¾Ýµ¥Î» 8bit*/
		DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;	 

		/*DMAģʽ£º²»¶ÏÑ­»·*/
		//DMA_InitStructure.DMA_Mode = DMA_Mode_Normal ;
		DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;	 

		/*ÓÅÏȼ¶£ºÖÐ*/	
		DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;  

		/*½ûÖ¹ÄÚ´æµ½ÄÚ´æµÄ´«Êä	*/
		DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
			   
		DMA_Init(BT_DMARX_CH, &DMA_InitStructure); 
			
		USART_DMACmd(BT_USARTNUM, USART_DMAReq_Rx, ENABLE); 
		
		DMA_Cmd(BT_DMARX_CH, ENABLE);
		
		USART_Cmd(BT_USARTNUM, ENABLE);   

		USART_ClearITPendingBit(BT_USARTNUM, USART_IT_TC);//Çå³ýTC±êÖ¾
	

 
}

void BT_DATA_Init(void)
{
    DMA_Cmd(BT_DMARX_CH,DISABLE);
	DMA_SetCurrDataCounter(BT_DMARX_CH, BT_RX_LENGTH);
	DMA_Cmd(BT_DMARX_CH,ENABLE);
	memset(BT_RX_BUFF,0,sizeof(BT_RX_BUFF));
 	memset(ucRTUBuf,0,sizeof(ucRTUBuf));
}

void bt_send(u8 * data, u16 length)
{
	u16 i;
	u8	*ptr;

	ptr = data;
	for(i = 0; i < length; i ++)
	{
		USART_SendData(USART3, *ptr);
		ptr ++;
		while(USART_GetFlagStatus(USART3, USART_FLAG_TC) == RESET);
	}


	
}
void bt_rs485_send(u8 * data, u16 length)
{
	u16 i;
	u8	*ptr;

	ptr = data;
	
	
	if(v20_system_para_g.system_ble_connect == 1)
	{
		
	}else
	{
		PC_RS485_EN = 1;
		delay_ms(1);
	}
	
//	Data_send_flag = 1;
//	DMA_Cmd(DMA_RS485_TX_Channel,DISABLE);
//	DMA_SetCurrDataCounter(DMA_RS485_TX_Channel,length);
//	DMA_Cmd(DMA_RS485_TX_Channel,ENABLE);
	USART_ClearFlag(USART3, USART_FLAG_TC);//¿ÉÒÔ½â¾öÓ²¼þ¸´Î»Ö®ºóµÚÒ»´Î·¢ËͶªµÚÒ»¸ö×Ö½ÚÎÊÌâ	
	for(i = 0; i < length; i ++)
	{
		USART_SendData(USART3, *ptr);
		ptr ++;
		while(USART_GetFlagStatus(USART3, USART_FLAG_TC) == RESET);
	}

	PC_RS485_EN = 0;
	
}