From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas.Karlsson@combitechsystems.com
To: ecos-discuss@sourceware.cygnus.com, aeb@arm.com
Subject: [ECOS] UART communication
Date: Tue, 05 Sep 2000 06:16:00 -0000
Message-id: <2253171AF143D21185A60000F8FA748B0229A94D@pluto.combitech.se>
X-SW-Source: 2000-09/msg00034.html

Hi,

While receiving several bytes on the UART0 port on my AEB-board the
eCos-serialdriver says it only received 1 byte with the value of 0.

The incoming data looks very nice on an oscilloscope. 

Just to be sure that I hadn't messed something up in my receiver-thread I
connected the TX and the RX pin and sent 4 bytes, the packet was received
just as it should.



I compiled the ser0 with a baud rate of 57600 since that's the only one I
can use. The other settings are 1 stop bit, no parity, wordsize=8 and
CTS/RTS enabled.

I noticed that the baudrate of 57600 wasn't supported in aeb_serial.h but
what happens when I make this selection in the configuration?

To be able to enable CTS/RTS I had to modify the select_baud-array in
aeb_serial.h. This because I should be able to set all fields in the
cyg_serial_info_t struct. I added the value of 26 on the bauddivisor for
57600, maybe this is the problem.

I really don't know what could be wrong so if anybody has a clue...

/Andreas