ColdFire/68K Microcontrollers and Processorsのトピックhow to solve overrun problem in serial communication for coldfire-523x processor https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/how-to-solve-overrun-problem-in-serial-communication-for/m-p/243129#M11483 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>Iam working on m66k-523x(coldfire) processor, i am getting overrun problem at every 114th byte for receiving continuously, can u please suggest the solution.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Regards,</P><P>Raju B</P></BODY></HTML> Wed, 04 Dec 2013 12:52:19 GMT admin 2013-12-04T12:52:19Z how to solve overrun problem in serial communication for coldfire-523x processor https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/how-to-solve-overrun-problem-in-serial-communication-for/m-p/243129#M11483 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P>Iam working on m66k-523x(coldfire) processor, i am getting overrun problem at every 114th byte for receiving continuously, can u please suggest the solution.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Regards,</P><P>Raju B</P></BODY></HTML> Wed, 04 Dec 2013 12:52:19 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/how-to-solve-overrun-problem-in-serial-communication-for/m-p/243129#M11483 admin 2013-12-04T12:52:19Z Re: how to solve overrun problem in serial communication for coldfire-523x processor https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/how-to-solve-overrun-problem-in-serial-communication-for/m-p/243130#M11484 <HTML><HEAD></HEAD><BODY><P>I assume you're polling the serial port. Fix your code to see what it is doing that stops it from getting back to the UART in time. You as a programmer have to guarantee the minimum service interval for the hardware.</P><P></P><P>Rewrite your code to use interrupts that receive into a ring buffer.</P><P></P><P>If you're already using interrupts, watch out for the priority levels. You may need to make the serial port interrupt higher than other interrupts that are taking too long.</P><P></P><P>Tom</P></BODY></HTML> Wed, 04 Dec 2013 23:33:06 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/how-to-solve-overrun-problem-in-serial-communication-for/m-p/243130#M11484 TomE 2013-12-04T23:33:06Z