[ECOS] Re : Hello. I want to ask about SMC2 in MPC850

[=?ks_c_5601-1987?B?wPwgwM28ug==?= <isjeon at hotmail dot com>]

In function cyg_hal_gdb_isr, you must write as  "eppc->cpmi_cisr = 0x08;" 
instead "eppc->cpmi_cisr = 0x10;"
I doubt that is the major reason for the unwanted result.


int cyg_hal_gdb_isr( target_register_t pc )
{
   EPPC *eppc = eppc_base();
   struct cp_bufdesc *bd;
   char ch;

   eppc->smc_regs[1].smc_smce = 0xff;

   /* rx buffer descriptors */
   bd = (struct cp_bufdesc *)((char *)eppc_base() + Rxbd);

   if ((bd->ctrl & QUICC_BD_CTL_Ready) == 0) {
       // then there be a character waiting
       ch = bd->buffer[0];
       bd->length = 1;
       bd->ctrl   = QUICC_BD_CTL_Ready | QUICC_BD_CTL_Wrap | 
QUICC_BD_CTL_Int;

       if ( 3 == ch ) {
           // Ctrl-C: set a breakpoint at PC so GDB will display the
           // correct program context when stopping rather than the
           // interrupt handler.
           cyg_hal_gdb_interrupt( pc );

           // Interrupt handled. Don't call ISR proper. At return
           // from the VSR, execution will stop at the breakpoint
           // just set.

           eppc->cpmi_cisr = 0x10; --> 0x08 for SMC2
           return 0;
       }


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