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

[전 익성]

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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