gps_cpu_port.c

周立功公司2410开发板上所有基于UCOS开发的源代码

/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File name:			GPS_CPU_PORT.c
** Last modified Date:	2005-06-17
** Last Version:		1.0
** Descriptions:		cpu port function of GPS
**						
**------------------------------------------------------------------------------------------------------
** Created by:			Yehaoben
** Created date:		2005-06-17
** Version:				1.0
** Descriptions:		The original version
**
**------------------------------------------------------------------------------------------------------
** Modified by: 
** Modified date:
** Version:	
** Descriptions: 
**
********************************************************************************************************/

#include "config.H"

/*********************************************************************************************************
** Function name:			UART_Ini
**
** Descriptions:			Initial uart
**
** input parameters:		baud bandrate
** Returned value:			None
**         
** Used global variables:	None
** Calling modules:			None
**
** Created by:				Yehaoben
** Created Date:			2005/06/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void   IRQ_UART(void);
uint8  UART_Ini(uint32 baud)

{  uint8 i;
	
	VICVectAddr[23] = (uint32) IRQ_UART;
    // Clear Int Pending and Unmask 
   // rPRIORITY = 0x00000000;		// 使用默认的固定的优先级
	//rINTMOD = 0x00000000;		// 所有中断均为IRQ中断
    rINTMSK &=~(BIT_UART1);
    rINTSUBMSK &=~(BIT_SUB_RXD1|BIT_SUB_ERR1);
	
	// IO口设置 (GPH5,GPH4)
	rGPHUP = rGPHUP | (0x03<<4);
	rGPHCON = (rGPHCON & (~0x00000F00)) | (0x00000A00);	
			
	// 串口模式设置
	rUFCON1 = 0x97;   	// 8tx,8rx,reset fifo ,enable fifo
	rUMCON1 = 0x01;   	// AFC(流控制)禁能
	rULCON1 = 0x03; 	// 禁止IRDA，无奇偶校验，1位停止位，8位数据位
	rUCON1  = 0x3c5; 	// 使用PCLK来生成波特率，发送中断为电平触发模式，接收中断为边沿触发模式，
                    	// 禁止接收超时中断，使能接收错误中断，正常工作模式，中断或查询方式(非DMA)	
	// 串口波特率设置
	rUBRDIV1=(int)(PCLK/16.0/baud + 0.5) -1; 
	
   	for(i=0;i<100;i++);
   	return 1;
}
/*********************************************************************************************************
** Function name:			IRQ_UART
**
** Descriptions:			UART interrupt server function
**
** input parameters:		None
** Returned value:			None
**         
** Used global variables:	None
** Calling modules:			None
**
** Created by:				Yehaoben
** Created Date:			2005/06/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
extern void ZLG_GPS_RVC_HANDLE(uint8 i);
void   IRQ_UART(void)
{  
    uint16 temp16;
    temp16 = rUFSTAT1;
	
	if(temp16 & (1<<9))//Tx FIFO FULL
	{
		//ERR
	}
	else if((temp16 & 0x00f0) == 0 )//Tx FIFO == 0
	{
		//SEND DATA
	}
	if(temp16 & (1<<8))//Rx FIFO FULL
	{
		//REVICE DATA
	}
	else if(temp16 & 0x000f)//Rx FIFO > 0
	{
		//REVICE DATA
		do
        {
            ZLG_GPS_RVC_HANDLE(rURXH1);
        } while(rUFSTAT1 & 0x000f);
	}
	
	temp16 = rUERSTAT1;//READ ERR STATUS
	
	rSRCPND = BIT_UART1;
	rSUBSRCPND = BIT_SUB_RXD1|BIT_SUB_ERR1;
	rINTPND = rINTPND;
    
}  
/*********************************************************************************************************
** Function name:			ZLG_GPS_Send_String
**
** Descriptions:			Send string
**
** input parameters:		char *:string pointer
** Returned value:			None
**         
** Used global variables:	None
** Calling modules:			None
**
** Created by:				Yehaoben
** Created Date:			2005/06/02
**-------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
**------------------------------------------------------------------------------------------------------
********************************************************************************************************/
void	ZLG_GPS_Send_String(char * strptr)
{
		uint8	i,j,k,l;
	k = strlen(strptr);
	l = 0;
	do
	{
		j = (k > 8) ? 8 : k;
		for(i=0; i<j; i++)
			rUTXH1 = strptr[i + (l * 8)];	
		l++;
		k = k - j;
		while( (rUTRSTAT1 & 0X02) == 0 );
	}while(k > 0);
}