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

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 /***************************************************************************
   4  *   Copyright (C) 2011 by Martin Schmoelzer                               *
   5  *   <martin.schmoelzer@student.tuwien.ac.at>                              *
   6  ***************************************************************************/
   7
   8 #include "main.h"
   9
  10 #include "io.h"
  11 #include "usb.h"
  12 #include "protocol.h"
  13
  14 extern void sudav_isr(void)    __interrupt SUDAV_ISR;
  15 extern void sof_isr(void)      __interrupt;
  16 extern void sutok_isr(void)    __interrupt;
  17 extern void suspend_isr(void)  __interrupt;
  18 extern void usbreset_isr(void) __interrupt;
  19 extern void ibn_isr(void)      __interrupt;
  20 extern void ep0in_isr(void)    __interrupt;
  21 extern void ep0out_isr(void)   __interrupt;
  22 extern void ep1in_isr(void)    __interrupt;
  23 extern void ep1out_isr(void)   __interrupt;
  24 extern void ep2in_isr(void)    __interrupt;
  25 extern void ep2out_isr(void)   __interrupt;
  26 extern void ep3in_isr(void)    __interrupt;
  27 extern void ep3out_isr(void)   __interrupt;
  28 extern void ep4in_isr(void)    __interrupt;
  29 extern void ep4out_isr(void)   __interrupt;
  30 extern void ep5in_isr(void)    __interrupt;
  31 extern void ep5out_isr(void)   __interrupt;
  32 extern void ep6in_isr(void)    __interrupt;
  33 extern void ep6out_isr(void)   __interrupt;
  34 extern void ep7in_isr(void)    __interrupt;
  35 extern void ep7out_isr(void)   __interrupt;
  36
  37 void io_init(void)
  38 {
  39         /* PORTxCFG register bits select alternate functions (1 == alternate function,
  40          *                                                    0 == standard I/O)
  41          * OEx register bits turn on/off output buffer (1 == output, 0 == input)
  42          * OUTx register bits determine pin state of output
  43          * PINx register bits reflect pin state (high == 1, low == 0) */
  44
  45         /* PORT A */
  46         PORTACFG = PIN_OE;
  47         OEA = PIN_U_OE | PIN_OE | PIN_RUN_LED | PIN_COM_LED;
  48         OUTA = PIN_RUN_LED | PIN_COM_LED;
  49
  50         /* PORT B */
  51         PORTBCFG = 0x00;
  52         OEB = PIN_TDI | PIN_TMS | PIN_TCK | PIN_TRST | PIN_BRKIN | PIN_RESET
  53                 | PIN_OCDSE;
  54
  55         /* TRST and RESET signals are low-active but inverted by hardware, so we clear
  56          * these signals here! */
  57         OUTB = 0x00;
  58
  59         /* PORT C */
  60         PORTCCFG = PIN_WR;
  61         OEC = PIN_TXD0 | PIN_WR;
  62         OUTC = 0x00;
  63 }
  64
  65 int main(void)
  66 {
  67         io_init();
  68         usb_init();
  69
  70         /* Enable Interrupts */
  71         EA = 1;
  72
  73         /* Begin executing command(s). This function never returns. */
  74         command_loop();
  75
  76         /* Never reached, but SDCC complains about missing return statement */
  77         return 0;
  78 }