Lpc2000

Hi Robert,

  I set my FIFO trigger to 1 (bit 7:6 = 00 in U0FCR), and when I 
started seeing these CTIs, I tried setting it to 4 characters and 8 
characters, but I still see only CTIs instead of RDA. 
Each character I am recieving is 10 bits in lenght and my baud rate 
is set to 19,200 right now. However I have tried using other baud 
rates too. I put a scope and verified that the characters are being 
sent at my baud rate settings. The whole write file is 2K bytes. I 
am able to read a file of that size without any problem...
Also in the data sheet, there is a formula to calculate the exact 
CTI time and it uses a parameter called RCLK.. any idea what is this 
RCLK?

Thanks,
Swetha 


--- In lpc2000@yahoogroups.com, Robert Adsett <subscriptions@...> 
wrote:
>
> At 12:56 AM 2/8/06 +0000, swetha_araga wrote:
> >I am using MODBUS serial communication through UART on LPC2138. My
> >transmission works fine, but for some reason during reception, I 
never
> >seem to get the RDA interrupt and always get the CTI instead. I 
have
> >enabled only the RBR interrupt and disabled the THRE and RX line
> >status interrupts.
> 
> Two questions
>          - How big is the packet you are receiving?
>          - What is your receive threshold set to?
> 
> Robert
> 
> " 'Freedom' has no meaning of itself.  There are always 
restrictions,   be 
> they legal, genetic, or physical.  If you don't believe me, try to 
chew a 
> radio signal. "  -- Kelvin Throop, III
> http://www.aeolusdevelopment.com/
>