topic Re: Uart interrupt problem in Free RTOS in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/Uart-interrupt-problem-in-Free-RTOS/m-p/804472#M48892 <HTML><HEAD></HEAD><BODY><P>Hi Sreerama:</P><P></P><P>It is difficult to know exactly why your interrupt suddenly stop, maybe you have to provide more details.</P><P>I would suggest you can check&nbsp; whether your interrupt handler always clearing the corresponding IRQ flag? If the flag is not cleared then the processor can get locked .</P><P></P><P></P><P>Regards</P><P>Daniel</P></BODY></HTML> Mon, 23 Jul 2018 07:06:28 GMT danielchen 2018-07-23T07:06:28Z Uart interrupt problem in Free RTOS https://community.nxp.com/t5/Kinetis-Microcontrollers/Uart-interrupt-problem-in-Free-RTOS/m-p/804471#M48891 <HTML><HEAD></HEAD><BODY><P>Dear sir/mam,</P><P>We are using MK22FN512VLH12 for our application.</P><P>We are using mcuxpresso10.2 with freertos.</P><P>I am using 3 interrupts.</P><P>1.uart0 - priority 3</P><P>2.uart1- priority4</P><P>3.ftm-pririty 3</P><P>But all are working fine with some time.</P><P>But uart1 ,interrupt suddenly stop ?</P><P>Please help me what problem? Suggest how to handle multiple uart interrupts in freertos without losing data?</P><P>Thanks</P><P>Dhanalakshmi S</P></BODY></HTML> Thu, 12 Jul 2018 02:19:16 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Uart-interrupt-problem-in-Free-RTOS/m-p/804471#M48891 sreeramadhanala 2018-07-12T02:19:16Z Re: Uart interrupt problem in Free RTOS https://community.nxp.com/t5/Kinetis-Microcontrollers/Uart-interrupt-problem-in-Free-RTOS/m-p/804472#M48892 <HTML><HEAD></HEAD><BODY><P>Hi Sreerama:</P><P></P><P>It is difficult to know exactly why your interrupt suddenly stop, maybe you have to provide more details.</P><P>I would suggest you can check&nbsp; whether your interrupt handler always clearing the corresponding IRQ flag? If the flag is not cleared then the processor can get locked .</P><P></P><P></P><P>Regards</P><P>Daniel</P></BODY></HTML> Mon, 23 Jul 2018 07:06:28 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Uart-interrupt-problem-in-Free-RTOS/m-p/804472#M48892 danielchen 2018-07-23T07:06:28Z