[ECOS] Test Serial Port 2 on NEC vrc4373 target.

["Ling Su" <lingsu@palmmicro.com>]

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Hi, 
 
I am trying to test the serial port 2 on my board working properly. I 
wrote some programs and connect my PC and the board using a direct serial cable 
(not null modem, since I found GDB doesn't use null modem, I guess the two 
serial ports are in same configuration). Unfortunately, I don't read 
out anything although on the PC side I wrote a program to keep writing to the 
this serial port. 
 
I have ever tried the serial port test cases in eCos with 
"ser_filter" for serial port 1. I think I might be able to run the test cases on 
serial port 2, so I did following things and try to run one 
of the test cases, 
 
<1>. I modified the ser_test_protocol.inl, change the "TEST_SER_DEV" 
from "CYDAT_IO_SERIAL_MIPS_VRC4373_SERIAL0_NAME" to 
"CYDAT_IO_SERIAL_MIPS_VRC4373_SERIAL1_NAME". Supposely the test case will use 
"/dev/ser1" instead of "/dev/ser0".
 
<2>. On PC side, I run following command in seperate console,
        ser_filter -t 9001 /dev/ttyS0 
38400 
        ser_filter -t 9000 /dev/ttyS1 
38400
Thus two program will monitor both of the two ports.
 
<3>. Using GDB to load the test case "serial3" to "remote 
localhost:9001", it was successfully loaded. But when I let the program run, it 
halts on "NOT APPLICABLE: no host side harness dectect". Apparently it tried to 
read reply from HOST, nothing read in and timer timeout was triggered . 

 
So more specifically, my question is, anything wrong with my assumption and 
procedure? or any method to test serial port 2?
 
Thanks for anyone who can shed me some light!
 
Regards,
-Ling