[ECOS] /dev/??? for assabet

Jesper Skov jskov@redhat.com
Mon Nov 12 07:25:00 GMT 2001


>>>>> "Andrew" == Andrew Xiang <ahgu@yahoo.com> writes:

Andrew>   I try to dump the debug msgs(printf) to the serial port,
Andrew> just follow redboot.  But how do I figure out the name? I
Andrew> tried /dev/tty0,1 also ser0,1, all with no luck.


Andrew> #include <cyg/io/io.h> #include <cyg/io/serialio.h> #include
Andrew> <cyg/error/codes.h> #include <stdio.h> int main(void) {
Andrew> cyg_uint32 length; Cyg_ErrNo error; char test_msg1[]="This is
Andrew> a test message!\n"; cyg_io_handle_t serial_port_handle; error
Andrew> = cyg_io_lookup("/dev/tty1", &serial_port_handle); if (error
Andrew> == ENOERR) { length = strlen(&test_msg1[0]);
Andrew> cyg_io_write(serial_port_handle, &test_msg1[0], &length);

Andrew>   } printf("andrew xiang!\n"); return 0; }

To write to the GDB debug port, you should use diag_printf, not a
serial IO call.

Jesper






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