* [ECOS] serial problem in i386
@ 2000-09-23 10:35 danish iftikhar
0 siblings, 0 replies; only message in thread
From: danish iftikhar @ 2000-09-23 10:35 UTC (permalink / raw)
To: ecos-discuss
Hi
i have built ecos for i386 pc target and have run the test programs by
downloading them to the target. Now i am trying to receive data through the
serial port. for this i have enabled one of the ports in the ecos.ecc file .
my i386 pc has WINBOND W83627HF i/o chip , which has 16550 compatible UART .
but while debugging i found that it is assigning device type as 8250 which
it should not have done .
whenever i am sending data throgh the uart it is receiving only one byte at
a time .
for ex. if i want to read 10 bytes through the port , i give the length in
cyg_io_read as 10 . then suppose i want to transmit "abcdefghij" (theses are
the 10 bytes ) , then what happens is that it will read only "j" , ie the
last byte & will go in wait expecting the remaining 9 bytes to be
transmitted , where as what should have happened is that it should keep on
reading these 10 bytes .
can anyone specify any solution to this.. is it some problem with winbond
chip or some bug in the eCos code itself.
regards
danish.
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