LPC Microcontrollers中的主题 GPDMA Request Line for Uart1 and Uart4 https://community.nxp.com/t5/LPC-Microcontrollers/GPDMA-Request-Line-for-Uart1-and-Uart4/m-p/522972#M5608 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by mohitm on Sat Jan 18 05:29:42 MST 2014</STRONG><BR /><SPAN>Hi</SPAN><BR /><SPAN>I am using LPC1778 for a robotic application. I wish to use uart 1 and uart 4 for communicating with external devices. I have dma based transmission enabled on both uart. But since they share the same dma request line (line 12 ) the transmission of both uart is getting corrupted when they are used simultaneously. Same problem is not observed when using uart0 and uart1. Is this the expected behavior ? Apart from using different uart instead of uart4 which will require us to make a new hardware is there a possible solution for this.</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:00:15 GMT lpcware 2016-06-15T18:00:15Z GPDMA Request Line for Uart1 and Uart4 https://community.nxp.com/t5/LPC-Microcontrollers/GPDMA-Request-Line-for-Uart1-and-Uart4/m-p/522972#M5608 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by mohitm on Sat Jan 18 05:29:42 MST 2014</STRONG><BR /><SPAN>Hi</SPAN><BR /><SPAN>I am using LPC1778 for a robotic application. I wish to use uart 1 and uart 4 for communicating with external devices. I have dma based transmission enabled on both uart. But since they share the same dma request line (line 12 ) the transmission of both uart is getting corrupted when they are used simultaneously. Same problem is not observed when using uart0 and uart1. Is this the expected behavior ? Apart from using different uart instead of uart4 which will require us to make a new hardware is there a possible solution for this.</SPAN></BODY></HTML> Wed, 15 Jun 2016 18:00:15 GMT https://community.nxp.com/t5/LPC-Microcontrollers/GPDMA-Request-Line-for-Uart1-and-Uart4/m-p/522972#M5608 lpcware 2016-06-15T18:00:15Z