topic Re: How to switch data to receive at the LPC812 UART off when it is sending data in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/How-to-switch-data-to-receive-at-the-LPC812-UART-off-when-it-is/m-p/567902#M17632 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by lpc_bloke on Tue Sep 30 00:41:10 MST 2014</STRONG><BR /><SPAN>Depending on your UART driver you have a few options.</SPAN><BR /><SPAN>1. Leave the Rx interrupt disabled while transmitting and clear the Rx status before enabling the Rx interrupt.</SPAN><BR /><SPAN>2. Use 2 UARTs and keep the Rx UART powered down while transmitting.</SPAN><BR /><SPAN>3. Design the HW such that while transmitting the Rx line is idle.</SPAN><BR /><BR /><SPAN>My observation with this UART is that the TXDISINT occurs early.&nbsp; I have not fully characterized this as for me delaying the Tx to Rx turnaround from this interrupt by upto 100uS was well within specification.</SPAN><BR /><BR /><SPAN>Good luck.</SPAN></BODY></HTML> Wed, 15 Jun 2016 20:08:11 GMT lpcware 2016-06-15T20:08:11Z How to switch data to receive at the LPC812 UART off when it is sending data https://community.nxp.com/t5/LPC-Microcontrollers/How-to-switch-data-to-receive-at-the-LPC812-UART-off-when-it-is/m-p/567901#M17631 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by Burkhard on Mon Sep 29 08:36:35 MST 2014</STRONG><BR /><SPAN>Dear all,</SPAN><BR /><BR /><SPAN>I use the LPC812 in a project where the capability of receiving data shall be switched off when the UART is sending data. </SPAN><BR /><SPAN>Is there an easy way to switch that off before sending data and switch it later on?</SPAN><BR /><BR /><SPAN>I'm looking forward to your ideas!</SPAN><BR /><SPAN>Burkhard</SPAN></BODY></HTML> Wed, 15 Jun 2016 20:08:09 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-switch-data-to-receive-at-the-LPC812-UART-off-when-it-is/m-p/567901#M17631 lpcware 2016-06-15T20:08:09Z Re: How to switch data to receive at the LPC812 UART off when it is sending data https://community.nxp.com/t5/LPC-Microcontrollers/How-to-switch-data-to-receive-at-the-LPC812-UART-off-when-it-is/m-p/567902#M17632 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by lpc_bloke on Tue Sep 30 00:41:10 MST 2014</STRONG><BR /><SPAN>Depending on your UART driver you have a few options.</SPAN><BR /><SPAN>1. Leave the Rx interrupt disabled while transmitting and clear the Rx status before enabling the Rx interrupt.</SPAN><BR /><SPAN>2. Use 2 UARTs and keep the Rx UART powered down while transmitting.</SPAN><BR /><SPAN>3. Design the HW such that while transmitting the Rx line is idle.</SPAN><BR /><BR /><SPAN>My observation with this UART is that the TXDISINT occurs early.&nbsp; I have not fully characterized this as for me delaying the Tx to Rx turnaround from this interrupt by upto 100uS was well within specification.</SPAN><BR /><BR /><SPAN>Good luck.</SPAN></BODY></HTML> Wed, 15 Jun 2016 20:08:11 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-switch-data-to-receive-at-the-LPC812-UART-off-when-it-is/m-p/567902#M17632 lpcware 2016-06-15T20:08:11Z