请教关于USB Slave FIFO的OUT传输

只看该作者 · 2011-2-14 11:27

我想通过SlaveFIFO模式把主机数据通过EZ-USB传输给外部其它的MCU。外部MCU的数据通过SlaveFIFO模式已经用CYpress Console软件不断的读出来了！
  可是我把端点2设为OUT端点用CYpress Console软件确发不出来，提示Bulk OUT failed
  下面是我关于设置端点的固件程序。请前辈们给我指出问题！
BREAKPT &= ~bmBPEN;    // to see BKPT LED go out TGE
Rwuen = TRUE;          // Enable remote-wakeup
OEE=0xFF;
IOE=0x00;
// set the CPU clock to 48MHz
CPUCS = ((CPUCS & ~bmCLKSPD) | bmCLKSPD1) ;
// set the slave FIFO interface to 48MHz
//IFCONFIG |= 0x40;
IFCONFIG=0xcb;
SYNCDELAY;
REVCTL=0x03;
SYNCDELAY;
EP1OUTCFG = 0xA0;
  EP1INCFG = 0xA0;
  SYNCDELAY;                   // see TRM section 15.14
  EP2CFG = 0xA2;
  SYNCDELAY;
  EP4CFG = 0xA0;
  SYNCDELAY;
  EP6CFG = 0xE2;
  SYNCDELAY;
  EP8CFG = 0xE0;
  SYNCDELAY;
  FIFORESET=0x80;
  SYNCDELAY;
  FIFORESET=0x08;
  SYNCDELAY;
  FIFORESET=0x00;
  SYNCDELAY;
  EP6FIFOCFG=0x0C;
  SYNCDELAY;
  EP2FIFOCFG=0x10;

  SYNCDELAY;
  EP2AUTOINLENH=0x02;
  SYNCDELAY;
  EP2AUTOINLENL=0x00;
SYNCDELAY;
  EP2BCL = 0x80;             // arm EP2OUT by writing byte count w/skip.
  SYNCDELAY;
  EP2BCL = 0x80;
  SYNCDELAY;
  EP4BCL = 0x80;             // arm EP4OUT by writing byte count w/skip.
  SYNCDELAY;
  EP4BCL = 0x80;
  FIFORESET=0x80;
  SYNCDELAY;
  FIFORESET=0x02;
  SYNCDELAY;
  FIFORESET=0x04;
  SYNCDELAY;
  FIFORESET=0x06;
  SYNCDELAY;
  FIFORESET=0x08;
  SYNCDELAY;
  FIFORESET=0x00;
  SYNCDELAY;
  // enable dual autopointer feature
  AUTOPTRSETUP |= 0x01;