ep0req.c

5416完整例程

/***************************************************
File:    seeddec5416usb.c
Author:  Lifeng Duan
Created: 21/11/2003

Description:Evaluates the use of SX2 with DSP

Copyright (C) SEED SEMICONDUCTOR, 2003
*****************************************************/
#include "type.h"
#include "uart.h"
#include "sx2.h"
#include "descriptors.h"
#include "ep0Req.h"
#include "cy7c68001.h"
#include "sysreg.h"
#include "timer.h"
#include "mcbsp54.h"
#include "codec.h"
#include "memory.h"
#include "dma54xx.h"

#define decintreg  0x2
#define USBINT 0x10
void delay();
/* external variables */
extern char desctbl[];

/* global variables */
extern BYTE irqValue;			/* interrupt register value */
extern BYTE setupBuff[8];		/* setup transaction buffer */
extern BOOL sx2Ready;			/* status byte for POST */ 
extern BOOL sx2BusActivity;	/* status byte for suspend */ 
extern BOOL sx2EnumOK;			/* status byte for enumeration complete */
extern BOOL sx2EP0Buf;			/* status for endpoint 0 buffer */
extern BOOL sx2Setup;			/* setup flag set in Int0() ISR */
extern BOOL readFlag;
extern BOOL FLAGS_READ;         /*FIFO的状态读请求*/
extern BOOL buffer_halffull;
extern BOOL buffer_full;
/* global variables specific to this test firmware */
unsigned char keepAliveCnt;	/* counter of Timer0 interrupts */
HANDLE codec_command =0;
HANDLE codec_data=0;
unsigned int FifoWriteCnt = 0;
unsigned int epdatar[512] ={0};
unsigned int epdataw[512] ={0};
unsigned int epdataw1[256] ={0};
/*串口A接收缓冲区*/
#pragma DATA_SECTION(codecdat,".codec_buffer")
unsigned int codecdat[0x400];

void main()
{

	unsigned int regValue = 0;	 /* register value from a read */
	unsigned int Sx2int = 0;     /*SX2的中断状态*/
	unsigned int Usb2or11= 0;    /*USB工作在哪一个标准上*/
	unsigned int endpoint0count = 0;/*EP0的数据长度*/
	unsigned int endpoint0data[64] ={0};/*EP0的数据缓冲区*/
	unsigned int i = 0;
	unsigned int FifoStatus24 = 0;	/*FIFO24的状态标识*/
	unsigned int FifoStatus68 = 0; 	/*FIFO68的状态标识*/
	unsigned int Fifostatus = 0;
	unsigned int Fifolong = 0;     /*FIFO的长度*/
	BOOL hshostlink = FALSE; /*为真是高速USB接口，为假是低速USB接口*/
	BOOL codec_runing = FALSE;
	BOOL codec_halt = FALSE;
	BOOL codec_rev = FALSE;
	BOOL codec_play = FALSE;
	BOOL codec_datok = FALSE;
	BOOL codec_horfull = TRUE;
	BOOL codec_back = FALSE;
	unsigned int codec_count = 0;
	unsigned int codec_sample = 0;
	unsigned int codec_regvalue = 0;
	unsigned int audiodata =0;
	unsigned int RecievedDataLongth = 0;
	unsigned int LedCount = 0; /*记录LED定时器的次数*/
	unsigned int DataToEndpoint0 = 0;/*写入到Endpoint0的数据缓冲*/
	unsigned long flashbaddr = 0;
	unsigned int flashdata = 0;
	unsigned int flasherr = 0;
	unsigned long flashlong = 0;
	
	/*设置系统时钟*/
	sys_clk(CLK160);
	/*初始化DEC5416板卡*/
	dec5416_init();
	/*打开codec数据接口*/
	codec_data = codec_open(CODEC_DATA);
	/*打开codec命令接口*/
	codec_command = codec_open(CODEC_COMMAND);
	/*选择麦克风作为输入*/
	codec_analog_mode(codec_command,0x14);
	/*设置波特率,输入与输出均为8K*/
	codec_sample_rate(codec_command,0xd);
	/*配置系统存储器*/	
	memory_set(0x80);
	/*初始化dma*/
	/*工作在USB2.0标准*/
	/*dma全局寄存器的初始化*/
	dma_global_init(0x80,      /*设置优先级，禁止所有dma*/
		         		0x2,    /*IN:Value for source page reg*/
		         		0x2,    /*IN:Value for dest page reg*/
		         		0x0,    /*IN:Value for element index reg 0    */
		         		0x0,    /*IN:Value for element index reg 1    */
		         		0x0,    /*IN:Value for frame index reg 0      */
		         		0x0,    /*IN:Value for frame index reg 1      */
		         		0x800,  /*IN:Value for global src addr reload */
		         		0x23,	/*IN:Value for global dst addr reload */
		         		0x80,  /*IN:Value for global count reload reg*/
		         		0x0);   /*IN:Value for global frame reload reg*/
		                    
		/*初始化dma寄存器*/
		dma_init(	0, /*选择通路0*/
	            	0x2000,  /*选择XEVT0，单字格式，单帧格式(dmsefc)*/
	            	0xF141,   /*自动初始化，选择ABU方式，设置数据空间，使有中断（dmsefc）*/
			        0x400,	 /*设置缓冲区的长度0x400(dmctr)*/
	            	0x2,     /*设置源的程序空间地址(src_page)  */
	            	0x800,   /*设置源地址(src_addr)*/
	           		0x2,	 /*设置目的地址空间(dst_page)*/
	            	0x23);   /*设置目的地址(dst_addr)*/        		
	for(i = 0;i<0x200;i++)
	{
		codecdat[i] = 0;
	}
	/*xf的LED灯闪三下*/
	for(i = 0;i<3;i++)
	{
		asm(" RSBX XF");
		delay();
		asm(" SSBX XF");
		delay();
	}
	
	/*判断CY68001是否准备好*/
	for(;;)
	{
      /*判断是否有中断到来*/
	  regValue = sysreg_read(decintreg);
	  if((regValue & USBINT) ==0)
	  {
	  	  /*判断是何种中断，并清中断*/
		  Sx2int = USB_Command_Read();  
		  if(Sx2int &(SX2_INT_ENUMOK + SX2_INT_READY))
		  {
		      /*打开系统的串口中断*/
		      sysint_enable(0x4);
		      break;  
	      }  
	  }
	  else
	  {
	  	/*打开系统的串口中断*/
		sysint_enable(0x4);
		break;		
	  }
	}
	/*自举循环*/	
	while(TRUE)
	{
		/* initialize global variables */
		readFlag 		= FALSE;	/* false until register read */
		sx2Ready		= FALSE;	/* false until POST or wakeup */
		sx2BusActivity	= FALSE;	/* false until absence or resumption of USB bus activity */
		sx2EnumOK		= FALSE;	/* false until ENUMOK interrupt */
		sx2EP0Buf		= FALSE;	/* false until EP0BUF interrupt */
		sx2Setup		= FALSE;	/* false until SETUP interrupt */
		
		/* Initialize global variables specific to this test firmware */
		keepAliveCnt		= 0;

		/* Initialize local variables */
		/* reusable variable for read register data */
		regValue			= 0;
		/* load descriptor tables; halt if load fails */
		if(!Load_descriptors(DESCTBL_LEN, &desctbl[0]))
		{
			while(TRUE);
		}
	
		/*装载描述表后，等待自举成功*/
		while(!sx2EnumOK);
		sysint_enable(0x4c);
		/*设置当前的接口的形式*/
		Write_SX2reg(SX2_IFCONFIG , 0xE8);
		/*设置当前系统中各使能信号的极性
		  其中SLOE、SLRD、SLWR只能有EEPROM来配置*/
		Write_SX2reg(SX2_FIFOPOLAR, SX2_WUPOL | SX2_EF | SX2_FF);
		/*读取当前工作在哪个USB的标准*/
		Read_SX2reg(SX2_FNADDR, &Usb2or11);
		hshostlink = (Usb2or11 & SX2_HSGRANT) ? TRUE : FALSE;
		/*初始化USB的工作状态*/
		if(hshostlink ==TRUE)
		{
			/*工作在2.00标准,设定数字接口为16位，数据包的大小为512字节*/
			Fifolong = 0x100;
			Write_SX2reg(SX2_EP2PKTLENH , SX2_WORDWIDE | 0x02);
			Write_SX2reg(SX2_EP2PKTLENL , 0x00);
			Write_SX2reg(SX2_EP4PKTLENH , SX2_WORDWIDE | 0x02);
			Write_SX2reg(SX2_EP4PKTLENL , 0x00);
			Write_SX2reg(SX2_EP6PKTLENH , SX2_WORDWIDE | 0x02);
			Write_SX2reg(SX2_EP6PKTLENL , 0x00);
			Write_SX2reg(SX2_EP8PKTLENH , SX2_WORDWIDE | 0x02);
			Write_SX2reg(SX2_EP8PKTLENL , 0x00);
		}
		else
		{
			/*工作在1.1标准,设定数字接口为16位，数据包的大小为64字节*/
			Fifolong =0x20;
			Write_SX2reg(SX2_EP2PKTLENH , SX2_WORDWIDE);
			Write_SX2reg(SX2_EP2PKTLENL , 0x40);
			Write_SX2reg(SX2_EP4PKTLENH , SX2_WORDWIDE);
			Write_SX2reg(SX2_EP4PKTLENL , 0x40);
			Write_SX2reg(SX2_EP6PKTLENH , SX2_WORDWIDE);
			Write_SX2reg(SX2_EP6PKTLENL , 0x40);
			Write_SX2reg(SX2_EP8PKTLENH , SX2_WORDWIDE);
			Write_SX2reg(SX2_EP8PKTLENL , 0x40);
		}
		/*设置FLAGSA为FIFO6的空的标志位；
		  设置FLAGSB为FIFO8的空的标志位；
		  FLAGSC与FLAGSD的状态为默认的状态*/
		Write_SX2reg(SX2_FLAGAB , SX2_FLAGA_FF6 | SX2_FLAGB_FF8); 
		/*清空所有的节点*/
		Write_SX2reg(SX2_INPKTEND, SX2_CLEARALL);
		Read_SX2reg(SX2_EP68FLAGS, &FifoStatus68);
			
		/*自举后进行主程序的循环*/
		while(sx2EnumOK)
		{
			/*CODEC CIRCLE运行*/
			if(codec_runing == TRUE)
			{
				if(codec_halt ==TRUE)
				{
					codec_runing = FALSE;
					codec_halt = FALSE;
				}
				else
				{
					/* Wait for sample from handset */
					while (!MCBSP_RRDY(CODEC_DATA)) {};
					/* Read sample from and write back to handset codec */
					audiodata = *(volatile u16*)DRR1_ADDR(CODEC_DATA);
					*(volatile u16*)DXR1_ADDR(CODEC_DATA) = audiodata;
				}	
			}/*CODEC CIRCLE运行*/
			/*CODE 录音*/
			if(codec_rev == TRUE)
			{
				if(codec_halt ==TRUE)
				{
					codec_rev = FALSE;
					codec_halt = FALSE;
				}
				else
				{
					for(i = 0;i<Fifolong;i++)
					{
						/* Wait for sample from handset */
						while (!MCBSP_RRDY(CODEC_DATA)) {};
						/* Read sample from and write back to handset codec */
						epdataw[i]= *(volatile u16*)DRR1_ADDR(CODEC_DATA);
						if(codec_back == TRUE)
						{
							*(volatile u16*)DXR1_ADDR(CODEC_DATA) = epdataw[i];
						}	
					}
					/*送给微机数据*/
					SX2_FifoWrite(ENDPOINT6,&epdataw[0],Fifolong);
				}	
			}/*CODE 录音*/
			if(timer_status())
			{
				LedCount++;
				if(LedCount & 0x1)
				{
					/*点亮LED*/
					asm(" SSBX XF");
				}
				else
				{
					/*关掉LED*/
					asm(" RSBX XF");
				}
			}/*定时器的处理*/
			/*慢速时的CODE 回放*/
			if(codec_datok == TRUE)
			{
				/* Wait for sample from handset */
				if(MCBSP_XRDY(CODEC_DATA))
				{
					/* Read sample from and write back to handset codec */
					*(volatile u16*)DXR1_ADDR(CODEC_DATA) = codecdat[codec_count];
					codec_count=codec_count + 1;
					if(codec_count == 0x40)
					{
						codec_count = 0x0;
						codec_datok = FALSE;
					}
				}		
			}/*慢速时的CODE 回放*/
			/*读FIFO状态*/
			if(FLAGS_READ)
			{
				FLAGS_READ = FALSE;
				/*是音频传送*/
				if(codec_play == TRUE)
				{
					if(hshostlink !=TRUE)
					{
						/*FIFO24状态的读取*/
						if(Read_SX2reg(SX2_EP24FLAGS, &FifoStatus24))
						{
							/*确定是否有FIFO满*/
							Fifostatus = FifoStatus24;
							if(!(Fifostatus & SX2_EP2EF))
							{
								for(i = 0;i<Fifolong;i++)
								{
									codecdat[i] = SX2_FifoReadSingle(ENDPOINT2);
								}
							}
							Fifostatus = FifoStatus24;
							if(!(Fifostatus & SX2_EP4EF))
							{
								for(i = 0;i<Fifolong;i++)
								{
									codecdat[i+0x20] = SX2_FifoReadSingle(ENDPOINT4);
								}
								codec_datok = TRUE;	
							}
						}/*FIFO24状态的读*/	
					}
					
				}/*是音频传送*/
				else/*不是音频传送*/
				{
					/*FIFO24状态的读取*/
					if(Read_SX2reg(SX2_EP24FLAGS, &FifoStatus24))
					{
						/*确定是否有FIFO满*/
						Fifostatus = FifoStatus24;
						if(!(Fifostatus & SX2_EP2EF))
						{
							RecievedDataLongth = Fifolong;
							for(i = 0;i<Fifolong;i++)
							{
								epdatar[i] = SX2_FifoReadSingle(ENDPOINT2);
								/*SX2_FifoWriteSingle(ENDPOINT6,epdatar[i]);*/
							}
							SX2_FifoWrite(ENDPOINT6,&epdatar[0],Fifolong);
							/*小于整数据包的数据提交SX2发送给主机*/
							if(RecievedDataLongth<(Fifolong-1))
							{
								Write_SX2reg(SX2_INPKTEND, 0x06);	
							}
						}
						Fifostatus = FifoStatus24;
						if(!(Fifostatus & SX2_EP4EF))
						{
							i = 0;
							while(!(Fifostatus & SX2_EP4EF))
							{
								epdatar[i] = SX2_FifoReadSingle(ENDPOINT4);
								Read_SX2reg(SX2_EP24FLAGS, &Fifostatus);
								RecievedDataLongth = i;
								i = i +1;	
							}
							SX2_FifoWrite(ENDPOINT8,&epdatar[0],Fifolong);
							/*小于整数据包的数据提交SX2发送给主机*/
							if(RecievedDataLongth<(Fifolong-1))
							{
								Write_SX2reg(SX2_INPKTEND, 0x08);	
							}	
						}	
					}/*FIFO24状态的读取*/
					/*FIFO68状态的读取*/
					if(Read_SX2reg(SX2_EP68FLAGS, &FifoStatus68))
					{
						/*无操作，可由用户测试使用*/		
					}	
				}/*不是音频传送*/
			}/*读FIFO状态*/
			
			/*关于setup中断的处理*/
			if(sx2Setup)
			{
				/*清SETUP数据读的标志*/
				sx2Setup = FALSE;
				/*解析OUT类型的命令申请*/
				if(setupBuff[0] == VR_TYPE_OUT)
				{
					/*分析命令类型*/
					switch(setupBuff[1])
					{	
						/*系统复位*/
						case VR_RESET:
							/*写0到EP0的计数寄存器，结束本次控制握手*/
							Write_SX2reg(SX2_EP0BC, 0);
							break;
						/*读命令*/
						case VR_BULK_READ:
							/*usbcommand = BULK_READ;*/
							/*写0到EP0的计数寄存器，结束本次控制握手*/