Post by thread:Can't receive chars on serial with interrupt...

Would you be better off just setting a user flag in the ISR routine and then running the 'getc()' function within a separate function? Perhaps you are running out of time before the receive routine can finish. Colin -- cdb, spam_OUTbodgy1TakeThisOuToptusnet.com.au on 18/08/2002 -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.

>I'm using a 18F452 with a 10MHz clock. Tied my MAX487 (RS-485) >with receive on RB0 and transmitt on RC5. Sending is fine but >receiving chars and just echoing them back wount work. Setting >RA0 high when interrupt goes in but it never goes high! >Anyone seeing something I missed? I'm quite lost (and tired) now. Is there a reason you are not using the internal hardware UART ? This would make life a lot easier. -- http://www.piclist.com hint: To leave the PICList .....piclist-unsubscribe-requestKILLspam@spam@mitvma.mit.edu

Yes.. y not use a USART. PIC16F877 has one ----- Original Message ----- From: "Alan B. Pearce" <A.B.PearceKILLspamRL.AC.UK> To: <.....PICLISTKILLspam.....MITVMA.MIT.EDU> Sent: Monday, August 19, 2002 3:35 PM Subject: Re: Can't receive chars on serial with interrupt... Urgent help is neded... > >I'm using a 18F452 with a 10MHz clock. Tied my MAX487 (RS-485) > >with receive on RB0 and transmitt on RC5. Sending is fine but > >receiving chars and just echoing them back wount work. Setting > >RA0 high when interrupt goes in but it never goes high! > >Anyone seeing something I missed? I'm quite lost (and tired) now. > > Is there a reason you are not using the internal hardware UART ? This would > make life a lot easier. > > -- > http://www.piclist.com hint: To leave the PICList > EraseMEpiclist-unsubscribe-requestspam_OUTTakeThisOuTmitvma.mit.edu > -- http://www.piclist.com hint: To leave the PICList piclist-unsubscribe-requestspam_OUTmitvma.mit.edu