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Lpc2000

Index last updated: 2026-04-28 23:31 UTC

Message

Re: UART CTI ( Character time out indicator) Interrupt

2006-02-08 by swetha_araga

Hi Kerem,
I have the FIFO enabled and I was using RX trigger level of 0 (i.e 1 
character). With this setting, I was pretty sure I will get a RDA 
everytime I recieve a character, but I dont. When I started seeing 
these CTIs, I tried increasing the trigger to 4 and even 8 and I 
still see only CTIs, which is not too puzzling. But with 1 character 
trigger I am really baffled as to why I see CTI interrupts. 

Thanks,
Swetha   

--- In lpc2000@yahoogroups.com, "Kerem Or" <k.or@...> wrote:
>
> What is your rx fifo settings ?
> 
> Kerem
> 
> ----- Original Message ----- 
> From: "swetha_araga" <swetha_araga@...>
> To: <lpc2000@yahoogroups.com>
> Sent: Wednesday, February 08, 2006 2:56 AM
> Subject: [lpc2000] UART CTI ( Character time out indicator) 
Interrupt
> 
> 
> > Hi,
> > 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. 
> > 
> > Anyone has faced any similar problems? Suggestions and tips are 
welcome
> > 
> > Thanks,
> > Swetha
> > 
> > 
> > 
> > 
> > 
> > 
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> > 
> > 
> >
>

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