src/jtag/drivers/OpenULINK/src/main.c

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Martin Schmoelzer                               *
   3  *   <martin.schmoelzer@student.tuwien.ac.at>                              *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.           *
  19  ***************************************************************************/
  20
  21 #include "main.h"
  22
  23 #include "io.h"
  24 #include "usb.h"
  25 #include "protocol.h"
  26
  27 extern void sudav_isr(void)    __interrupt SUDAV_ISR;
  28 extern void sof_isr(void)      __interrupt;
  29 extern void sutok_isr(void)    __interrupt;
  30 extern void suspend_isr(void)  __interrupt;
  31 extern void usbreset_isr(void) __interrupt;
  32 extern void ibn_isr(void)      __interrupt;
  33 extern void ep0in_isr(void)    __interrupt;
  34 extern void ep0out_isr(void)   __interrupt;
  35 extern void ep1in_isr(void)    __interrupt;
  36 extern void ep1out_isr(void)   __interrupt;
  37 extern void ep2in_isr(void)    __interrupt;
  38 extern void ep2out_isr(void)   __interrupt;
  39 extern void ep3in_isr(void)    __interrupt;
  40 extern void ep3out_isr(void)   __interrupt;
  41 extern void ep4in_isr(void)    __interrupt;
  42 extern void ep4out_isr(void)   __interrupt;
  43 extern void ep5in_isr(void)    __interrupt;
  44 extern void ep5out_isr(void)   __interrupt;
  45 extern void ep6in_isr(void)    __interrupt;
  46 extern void ep6out_isr(void)   __interrupt;
  47 extern void ep7in_isr(void)    __interrupt;
  48 extern void ep7out_isr(void)   __interrupt;
  49
  50 void io_init(void)
  51 {
  52         /* PORTxCFG register bits select alternate functions (1 == alternate function,
  53          *                                                    0 == standard I/O)
  54          * OEx register bits turn on/off output buffer (1 == output, 0 == input)
  55          * OUTx register bits determine pin state of output
  56          * PINx register bits reflect pin state (high == 1, low == 0) */
  57
  58         /* PORT A */
  59         PORTACFG = PIN_OE;
  60         OEA = PIN_U_OE | PIN_OE | PIN_RUN_LED | PIN_COM_LED;
  61         OUTA = PIN_RUN_LED | PIN_COM_LED;
  62
  63         /* PORT B */
  64         PORTBCFG = 0x00;
  65         OEB = PIN_TDI | PIN_TMS | PIN_TCK | PIN_TRST | PIN_BRKIN | PIN_RESET
  66                 | PIN_OCDSE;
  67
  68         /* TRST and RESET signals are low-active but inverted by hardware, so we clear
  69          * these signals here! */
  70         OUTB = 0x00;
  71
  72         /* PORT C */
  73         PORTCCFG = PIN_WR;
  74         OEC = PIN_TXD0 | PIN_WR;
  75         OUTC = 0x00;
  76 }
  77
  78 int main(void)
  79 {
  80         io_init();
  81         usb_init();
  82
  83         /* Enable Interrupts */
  84         EA = 1;
  85
  86         /* Begin executing command(s). This function never returns. */
  87         command_loop();
  88
  89         /* Never reached, but SDCC complains about missing return statement */
  90         return 0;
  91 }