some bits changed during 24c3 (no comments!) :)

diff --git a/fx2/fx2.c b/fx2/fx2.c
index 49f0da5..0ba6db9 100644 (file)
--- a/fx2/fx2.c
+++ b/fx2/fx2.c
@@ -130,29 +130,49 @@ void slave_fifo_init() {
        /* initialization of the slave fifo, used by external logic (the fpga)
         * to do usb communication with the host */
 
-       /* set bit 0 and 1 - fifo slave config */       
-       IFCONFIG|=0x03;
+       /* enable dyn_out and enhanced packet handling (p. 189) */
+       REVCTL=0x03;
        SYNCDELAY;
 
-       /* async mode */
-       IFCONFIG|=0x04;
+       /* internal 48 mhz clock, async, slave fifo */
+       IFCONFIG=0xcb;
        SYNCDELAY;
 
-       /* p. 180: must be set to 1 */
-       REVCTL|=((1<<0)|(1<<1));
-       SYNCDELAY;
-
-       /* 8 bit fifo to all endpoints
+       /* endpoint setup:
         *
-        * ('or' of all these bits define port d functionality)
+        * ep2: bulk out 2x512
+        * ep4: bulk out 2x512
+        * ep6: bulk in 2x512
+        * ep8: bulk in 2x512
         */
-       EP2FIFOCFG&=~(1<<0);
+       EP2CFG=0xa2;
+       EP4CFG=0xa0;
+       EP6CFG=0xc2;
+       EP8CFG=0xc0;
        SYNCDELAY;
-       EP4FIFOCFG&=~(1<<0);
+
+       /* reset the fifo */
+       FIFORESET=0x80; /* nak all transfers */
        SYNCDELAY;
-       EP6FIFOCFG&=~(1<<0);
+       FIFORESET=0x02; /* reset ep2 */
+       SYNCDELAY;
+       FIFORESET=0x04; /* reset ep4 */
+       SYNCDELAY;
+       FIFORESET=0x06; /* reset ep6 */
        SYNCDELAY;
-       EP8FIFOCFG&=~(1<<0);
+       FIFORESET=0x08; /* reset ep8 */
+       SYNCDELAY;
+       FIFORESET=0x00; /* restore normal operation */
+       SYNCDELAY;
+
+       /* 8 bit fifo to all endpoints */
+       EP2FIFOCFG=;
+       SYNCDELAY;
+       EP4FIFOCFG=;
+       SYNCDELAY;
+       EP6FIFOCFG=;
+       SYNCDELAY;
+       EP8FIFOCFG=;
        SYNCDELAY;
 
        /* default indexed flag configuration:
@@ -164,33 +184,6 @@ void slave_fifo_init() {
         * todo: -> fixed configuration
         */
 
-       /* endpoint configuration:
-        *
-        * ep2: bulk out 4x512
-        * ep6: bulk in 4x512
-        *
-        * 0xa0 = 1 0 1 0 0 0 0 0 = bulk out 4x512
-        * 0xe0 = 1 1 1 0 0 0 0 0 = bulk in 4x512
-        */
-       EP2CFG=0xa0;
-       SYNCDELAY;
-       EP4CFG&=(~0x80);
-       SYNCDELAY;
-       EP6CFG=0xe0;
-       SYNCDELAY;
-       EP8CFG&=(~0x80);
-       SYNCDELAY;
-
-       /* reset the fifo */
-       FIFORESET=0x80; /* nak all transfers */
-       SYNCDELAY;
-       FIFORESET=0x02; /* reset ep2 */
-       SYNCDELAY;
-       FIFORESET=0x06; /* reset ep6 */
-       SYNCDELAY;
-       FIFORESET=0x00; /* restore normal operation */
-       SYNCDELAY;
-
        /* auto in/out, no cpu interaction! auto in len = 512 */
        EP2FIFOCFG|=(1<<4);
        SYNCDELAY;
@@ -216,7 +209,7 @@ void ep1_init() {
         */
 
        /* arm ep1out, clear ep1out and ep1in stall bit */
-       EP1OUTBC=1;
+       EP1OUTBC=0;
        EP1OUTCS&=~STALL;
        EP1INCS&=~STALL;