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RE: Serial port used by both RedBoot and a program
- To: Fabrice Gautier <Fabrice_Gautier at sdesigns dot com>
- Subject: RE: [ECOS] Serial port used by both RedBoot and a program
- From: Jesper Skov <jskov at redhat dot com>
- Date: Fri, 10 Nov 2000 08:59:51 +0100
- Cc: "'Jesper Skov'" <jskov at redhat dot com>, Andrew Lunn <andrew dot lunn at ascom dot ch>, "Ecos-List (E-mail)" <ecos-discuss at sourceware dot cygnus dot com>
- References: <B1F6452C89AFD411AE0800A0CC734C23015003@EMAIL1>
>>>>> "Fabrice" == Fabrice Gautier <Fabrice_Gautier@sdesigns.com> writes:
Fabrice> Ok for the isr and the ctrl-C stuff, but what happens about
Fabrice> diagnostic output that are sent throught the vector table to
Fabrice> the serial port ?
Diagnostic output is using polled IO. The virtual vectors are not
changed when the serial driver proper is initialized, only the
interrupt vectors. So the application can still use the virtual
vectors for diag output. Of course, if you have enabled the serial
driver, there's probably trouble ahead if you try to use the same
serial line for diag output.
Jesper