topic how do i use usart2 on a lpcxpresso4337? in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/how-do-i-use-usart2-on-a-lpcxpresso4337/m-p/752546#M30289 <HTML><HEAD></HEAD><BODY><P>I'm trying to use both usart0 and usart 2 for two different freertos tasks, but only usart0 sends/receives any message!</P><P>uart_init is set with LPC_USART2, USART0_IRQN and USART2_IRQHandler. uart cable connected to J2 pin 14. Help!</P></BODY></HTML> Mon, 14 May 2018 14:00:53 GMT erlendgrande 2018-05-14T14:00:53Z how do i use usart2 on a lpcxpresso4337? https://community.nxp.com/t5/LPC-Microcontrollers/how-do-i-use-usart2-on-a-lpcxpresso4337/m-p/752546#M30289 <HTML><HEAD></HEAD><BODY><P>I'm trying to use both usart0 and usart 2 for two different freertos tasks, but only usart0 sends/receives any message!</P><P>uart_init is set with LPC_USART2, USART0_IRQN and USART2_IRQHandler. uart cable connected to J2 pin 14. Help!</P></BODY></HTML> Mon, 14 May 2018 14:00:53 GMT https://community.nxp.com/t5/LPC-Microcontrollers/how-do-i-use-usart2-on-a-lpcxpresso4337/m-p/752546#M30289 erlendgrande 2018-05-14T14:00:53Z Re: how do i use usart2 on a lpcxpresso4337? https://community.nxp.com/t5/LPC-Microcontrollers/how-do-i-use-usart2-on-a-lpcxpresso4337/m-p/752547#M30290 <HTML><HEAD></HEAD><BODY><P>Hello Erlend,&nbsp;</P><P></P><P>Please notice in the schematic of the board that J2 pin 14 is not connected to anything.</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.jpg"><img src="https://community.nxp.com/t5/image/serverpage/image-id/8276iF6ADBDB66DB9161D/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.jpg" alt="pastedImage_1.jpg" /></span></P><P>The pins you need to use for the UART2 are J2 13 and 15, that correspond to P2_10 and P2_11 respectively. If you reference the user manual:&nbsp;<A class="link-titled" href="https://www.nxp.com/docs/en/user-guide/UM10503.pdf" title="https://www.nxp.com/docs/en/user-guide/UM10503.pdf">https://www.nxp.com/docs/en/user-guide/UM10503.pdf</A>&nbsp; In the page 310 you will see that both pins need to be set in function 2 in order to work with the UART2.&nbsp;</P><P></P><P>Hope it helps!</P><P>Victor.</P><P>&nbsp;</P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Tue, 15 May 2018 17:49:14 GMT https://community.nxp.com/t5/LPC-Microcontrollers/how-do-i-use-usart2-on-a-lpcxpresso4337/m-p/752547#M30290 victorjimenez 2018-05-15T17:49:14Z