DSP开发源程序.rar_DSP 2407_Visual DSP_dec2407 ad_dsp_dsp pdf

#include <stdlib.h> #include "type.h" #include "sx2.h" #include "descriptors.h" #include "SEED-DEC2407.h" #include "DEC2407_USB.h" #include "ep0req.h" void SystemInit(void); BOOL Load_descriptors(char length, char* desc); BOOL Write_SX2reg(unsigned char addr, unsigned int value); BOOL SX2_comwritebyte(unsigned int value); BOOL SX2_FifoWrite(int channel,unsigned int *pdata,unsigned length); BOOL SX2_FifoWriteSingle(int channel,unsigned int pdata); unsigned int SX2_FifoReadSingle(int channel); /* 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 sx2EnumOK; /* status byte for enumeration complete */ //extern BOOL sx2Setup; /* setup flag set in Int0() ISR */ //extern BOOL readFlag; //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}; unsigned int irqValue; /* interrupt register value */ unsigned int setupBuff[8]; /* setup transaction buffer */ BOOL sx2Ready; /* status byte for POST */ BOOL sx2BusActivity; /* status byte for suspend */ BOOL sx2EnumOK; /* status byte for enumeration complete */ BOOL sx2EP0Buf; /* status for endpoint 0 buffer */ BOOL sx2Setup; /* setup flag set in Int0() ISR */ BOOL FLAGS_READ = FALSE; /*FIFO的状态读请求*/ unsigned int INT_STATUS; unsigned int SX2_int; BOOL readFlag; unsigned int usbtimeout = 0x400; unsigned int regdataread = 0; unsigned int Fifolong = 0; /*FIFO的长度*/ unsigned int setupCnt = 0; static BOOL setupDat = FALSE; void main(void) { unsigned int regValue = 0; /* register value from a read */ unsigned int Sx2int = 0; /*SX2的中断状态*/ unsigned int Usb2or11= 1; /*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; 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; // BOOL sx2EnumOK = 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; DINT; SystemInit(); *IFR = 0x3f; USB_STS = 1; for(;;) { INT_STATUS = INT_STS & 0x01; if(INT_STATUS == 0) { SX2_int = USB_COMMAND & (SX2_INT_ENUMOK + SX2_INT_READY); if(SX2_int) { // *IFR = 0x3f; *IMR = 0x01; EINT; break; } } else { // *IFR = 0x3f; *IMR = 0x01; EINT; break; } } for(;;) { /* 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; if(!Load_descriptors(DESCTBL_LEN, &desctbl[0])) { while(TRUE); } /*装载描述表后，等待自举成功*/ while(sx2EnumOK == FALSE); /*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) { /*读FIFO状态*/ if(FLAGS_READ) { FLAGS_READ = FALSE; /*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*/ /*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*/ Write_SX2reg(SX2_EP0BC, 0); break; /*