Subversion Repositories usb_fpga_2_13

/*!

   intraffic -- example showing how the EZ-USB FIFO interface is used on ZTEX USB-FPGA Module 1.11b

   Copyright (C) 2009-2014 ZTEX GmbH.

   http://www.ztex.de

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License version 3 as

   published by the Free Software Foundation.

   This program is distributed in the hope that it will be useful, but

   WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

   General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, see http://www.gnu.org/licenses/.

!*/

#include[ztex-conf.h]   // Loads the configuration macros, see ztex-conf.h for the available macros

#include[ztex-utils.h]  // include basic functions

// 1024 (instead of 512) byte bulk transfers. 

// According to USB standard they are invalid but usually supported and 25% faster.

//#define[fastmode]

#ifdef[fastmode]

// configure endpoint 2, in, quad buffered, 1024 bytes, interface 0

EP_CONFIG(2,0,BULK,IN,1024,4);

#else

// configure endpoint 2, in, quad buffered, 512 bytes, interface 0

EP_CONFIG(2,0,BULK,IN,512,4);

#endif

// select ZTEX USB FPGA Module 1.11 as target  (required for FPGA configuration)

IDENTITY_UFM_1_11(10.12.0.0,0);

// this product string is also used for identification by the host software

#define[PRODUCT_STRING]["intraffic example for UFM 1.11"]

// this is called automatically after FPGA configuration

#define[POST_FPGA_CONFIG][POST_FPGA_CONFIG

        IOA0 = 1;                               // reset on

        IOA3 = 0;                                // controlled mode

        OEA |= bmBIT0 | bmBIT3;

        EP2CS &= ~bmBIT0;                       // clear stall bit

        REVCTL = 0x3;

        SYNCDELAY;

        IFCONFIG = bmBIT7 | bmBIT5 | 3;         // internel 30MHz clock, drive IFCLK ouput, slave FIFO interface

        SYNCDELAY;

        EP2FIFOCFG = bmBIT3 | bmBIT0;           // AOTUOIN, WORDWIDE

        SYNCDELAY;

#ifdef[fastmode]

        EP2AUTOINLENH = 4;                      // 1024 bytes 

#else   

        EP2AUTOINLENH = 2;                      // 512 bytes 

#endif  

        SYNCDELAY;

        EP2AUTOINLENL = 0;

        SYNCDELAY;

        FIFORESET = 0x80;                       // reset FIFO

        SYNCDELAY;

        FIFORESET = 2;

        SYNCDELAY;

        FIFORESET = 0x00;

        SYNCDELAY;

        FIFOPINPOLAR = 0;

        SYNCDELAY;

        PINFLAGSAB = 0;

        SYNCDELAY;

        PINFLAGSCD = 0;

        SYNCDELAY;

        IOA0 = 0;                                // reset off

]

// set mode

ADD_EP0_VENDOR_COMMAND((0x60,,

        IOA0 = 1;                               // reset on

        IOA3 = SETUPDAT[2] ? 1 : 0;

        IOA0 = 0;                                // reset off

,,

        NOP;

));;

// include the main part of the firmware kit, define the descriptors, ...

#include[ztex.h]

void main(void)

{

    init_USB();

    while (1) {

    }

}