[ECOS] turn off diag_printf?

[Dave Milter]

I used arm cpu from at91 family and its DBGU channel for working with redboot.

When my application starting it used dbgu for diag_printf and also
ordinary printf working via
this channel, now I want interrupt driven IO via this DBGU serial
port, but only after full initialization.

So I want such scheme:
redboot - diag_printf working

ecos app:
- initialization - diag_printf working
- main function is called - diag_printf working
- somehow switch off diag_printf - now it nothing print to DBGU port (1)
- interrupt driven IO via DBGU port is activated

I have problem with (1), how should I do it?

I find such code:

    CYGACC_COMM_IF_CH_DATA_SET(*comm, &at91_ser_channels[0]);
    CYGACC_COMM_IF_WRITE_SET(*comm, cyg_hal_plf_serial_dbg_write);
    CYGACC_COMM_IF_READ_SET(*comm, cyg_hal_plf_serial_dbg_read);
    CYGACC_COMM_IF_PUTC_SET(*comm, cyg_hal_plf_serial_dbg_putc);
    CYGACC_COMM_IF_GETC_SET(*comm, cyg_hal_plf_serial_dbg_getc);
    CYGACC_COMM_IF_CONTROL_SET(*comm, cyg_hal_plf_serial_dbg_control);
    CYGACC_COMM_IF_DBG_ISR_SET(*comm, cyg_hal_plf_serial_dbg_isr);
    CYGACC_COMM_IF_GETC_TIMEOUT_SET(*comm, cyg_hal_plf_serial_dbg_getc_timeout);

if I replace in this code function like cyg_hal_plf_serial_dbg_write
with empty functions,
diag_printf stop send something to DBGU?

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