Subversion Repositories usb_fpga_2_14

/*%

   ZTEX Firmware Kit for EZ-USB FX2 Microcontrollers

   Copyright (C) 2009-2017 ZTEX GmbH.

   http://www.ztex.de

   This Source Code Form is subject to the terms of the Mozilla Public

   License, v. 2.0. If a copy of the MPL was not distributed with this file,

   You can obtain one at http://mozilla.org/MPL/2.0/.

   Alternatively, the contents of this file may be used under the terms

   of the GNU General Public License Version 3, as described below:

   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/.

%*/

/*

    debug helper

*/

#ifndef[ZTEX_DEBUG_H]

#define[ZTEX_DEBUG_H]

#ifndef[DEBUG_STACK_SIZE]

#error[Macro `DEBUG_STACK_SIZE' is not defined.]

#endif

#ifndef[DEBUG_MSG_SIZE]

#error[Macro `DEBUG_MSG_SIZE' is not defined.]

#endif

#define[@CAPABILITY_DEBUG;]

__xdata WORD debug_counter;                               // message number 

__xdata BYTE debug_stack_size;                            // stack size in messages

__xdata BYTE debug_msg_size;                              // message size in bytes

__xdata BYTE debug_stack[DEBUG_STACK_SIZE*DEBUG_MSG_SIZE];  // message stack

__xdata BYTE* __xdata debug_stack_ptr;                        // pointer to the last message added

__xdata BYTE debug_msg_buf[DEBUG_MSG_SIZE];               // user buffer: user should write data to this buffer

__xdata BYTE* __xdata debug_read_addr;

/* *********************************************************************

   ***** debug_add_msg *************************************************

   ********************************************************************* */

// adds the current message (stored in debug_msg_buf) to the message stack

void debug_add_msg () {

    BYTE i;

    i = debug_counter % DEBUG_STACK_SIZE;

    debug_stack_ptr = &debug_stack[i*DEBUG_MSG_SIZE];

    MEM_COPY1(debug_msg_buf,*debug_stack_ptr,DEBUG_MSG_SIZE);

    debug_counter += 1;

}

/* *********************************************************************

   ***** debug_add_msg *************************************************

   ********************************************************************* */

// init the variables

void debug_init () {

    debug_counter = 0;                             // message number 

    debug_stack_size = DEBUG_STACK_SIZE;

    debug_msg_size = DEBUG_MSG_SIZE;

    debug_stack_ptr = debug_stack;

}

/* *********************************************************************

   ***** EP0 vendor request 0x28 ***************************************

   ********************************************************************* */

// read the debug data

BYTE debug_read_ep0 () {

    BYTE b;

    b = ep0_payload_transfer;

    if ( b != 0) {

        MEM_COPY1(*debug_read_addr,EP0BUF,b);

    }

    debug_read_addr += b;

    return b;

}

ADD_EP0_VENDOR_REQUEST((0x28,,                          // read the debug data

    debug_read_addr = (__xdata BYTE*)&debug_counter;

    EP0BCH = 0;

    EP0BCL = debug_read_ep0();

,,

    EP0BCH = 0;

    EP0BCL = debug_read_ep0();

));;

#endif  /*ZTEX_DEBUG_H*/