FPGA通过CY7C68013A给上位机发数不正常

只看该作者 · 2012-12-11 15:10

FPGA产生10个16位的数，发送给68013的EP6(IN)，配置为AUTOIN模式，当发送10个数时，上位机EZ-USB Console读得时候，提示 Bulk IN Transfer failed.但如果将FIFO发满，上位机会读到，但数据不完全正确，请问有碰到类似情况的吗？
void TD_Init(void)          // Called once at startup
{
// set the CPU clock to 48MHz
// CPUCS = ((CPUCS & ~bmCLKSPD) | bmCLKSPD1);//0X10;48MHZ

IFCONFIG |= 0xCB;//异步，从FIFO模式.11001011
SYNCDELAY;

REVCTL = 0x03; // enable the external master
SYNCDELAY;
  // config the endpoints direction
  EP1OUTCFG = 0xA0;//enable and bulk type
  SYNCDELAY;
  EP1INCFG = 0xA0;
  SYNCDELAY;                   // see TRM section 15.14
  EP2CFG = 0xA0;//out,bulk,512,double
  SYNCDELAY;
  EP4CFG &= 0x7F;
  SYNCDELAY;
  EP6CFG = 0xE0;//enable IN bulk 512 double buffer
  SYNCDELAY;
  EP8CFG &= 0x7F;
  SYNCDELAY;

  //reset the fifos
  FIFORESET = 0x80;
  SYNCDELAY;
  FIFORESET = 0x82;
  SYNCDELAY;
  FIFORESET = 0x86;
  SYNCDELAY;
  FIFORESET = 0x00;
  SYNCDELAY;
///////////////////////////////////////////////////////////////////
  OUTPKTEND = 0x82; // Arm both EP2 buffers to “prime the pump”
  SYNCDELAY;
  OUTPKTEND = 0x82;
  SYNCDELAY;
  OUTPKTEND = 0x82;
  SYNCDELAY;
  OUTPKTEND = 0x82;
  SYNCDELAY;

  //config the endpoint6
  EP2FIFOCFG = 0x11;//EP2 IS AUTOOUT=1  ZEROLEN=1 WORDIDE=1 配置EP2自动方式16位总
  SYNCDELAY;//添加EP2

  EP6FIFOCFG = 0x0D;//EP6 IS AUTOIN =1 ZEROLEN=1 WORDIDE=1 配置EP6自动方式16位总
  SYNCDELAY;

  //-------------------------
  INPKTEND = 0x06;
  SYNCDELAY;
  INPKTEND = 0x06;
  SYNCDELAY;
  INPKTEND = 0x06;
  SYNCDELAY;
  INPKTEND = 0x06;
  SYNCDELAY;

  //-------------------tiao ji IN depth_1204---------------------
  EP6AUTOINLENH = 0x02; //set the packet size 512
  SYNCDELAY;
  EP6AUTOINLENL = 0x00;//EP6 recevie 10 num (16bit)LYF
  SYNCDELAY;

  PINFLAGSAB = 0xe8;  //F,FLAGA IS THE FIFO2 EF,FLAGb IS THE FIFO6 FULL FLAG
  SYNCDELAY;

  PORTACFG = 0x00;//PA7 pin as a port pin,not as a fifo flag;
  SYNCDELAY;
  FIFOPINPOLAR = 0x00; // set all slave FIFO interface pins as active low PKTEND OR SLOE SLWR LOW AVTIVE
  SYNCDELAY;

  }