topic Re: MQX UART Write Lockup when using Flow Control in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/MQX-UART-Write-Lockup-when-using-Flow-Control/m-p/390866#M21285 <HTML><HEAD></HEAD><BODY><P>I'm afraid the UART's hardware does not support flow control activation on the fly; every time the flow control is enabled/disabled, the Tx and Rx pins must be disabled and re-enabled or the module reset for the changes to have effect. This means any time you change the flow control you will lose the connection with the UART counterpart.</P></BODY></HTML> Thu, 08 Jan 2015 19:18:00 GMT apanecatl 2015-01-08T19:18:00Z MQX UART Write Lockup when using Flow Control https://community.nxp.com/t5/Kinetis-Microcontrollers/MQX-UART-Write-Lockup-when-using-Flow-Control/m-p/390865#M21284 <HTML><HEAD></HEAD><BODY><P>We use a device that needs to allow us to disable/enable flow control on the uart on the fly.&nbsp; This normally works fine, but on occasion, the device does not enable flow control and therefore sending data to the uart causes a lockup (stuck in the driver send routines).&nbsp; We would like to wrap this in a timeout and we are wondering if there is a built-in way to do this using MQX.&nbsp; Any ideas?</P></BODY></HTML> Wed, 07 Jan 2015 18:49:55 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/MQX-UART-Write-Lockup-when-using-Flow-Control/m-p/390865#M21284 jmag99 2015-01-07T18:49:55Z Re: MQX UART Write Lockup when using Flow Control https://community.nxp.com/t5/Kinetis-Microcontrollers/MQX-UART-Write-Lockup-when-using-Flow-Control/m-p/390866#M21285 <HTML><HEAD></HEAD><BODY><P>I'm afraid the UART's hardware does not support flow control activation on the fly; every time the flow control is enabled/disabled, the Tx and Rx pins must be disabled and re-enabled or the module reset for the changes to have effect. This means any time you change the flow control you will lose the connection with the UART counterpart.</P></BODY></HTML> Thu, 08 Jan 2015 19:18:00 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/MQX-UART-Write-Lockup-when-using-Flow-Control/m-p/390866#M21285 apanecatl 2015-01-08T19:18:00Z