topic Re: Kinetis UART: using DMA and ISR possible? in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/Kinetis-UART-using-DMA-and-ISR-possible/m-p/661275#M40602 <HTML><HEAD></HEAD><BODY><P>Yes, it works just fine if you set TDMAS as I intended and not TCDMAS as I typed the first time, aaarrggg...</P></BODY></HTML> Fri, 09 Dec 2016 22:00:13 GMT davenadler 2016-12-09T22:00:13Z Kinetis UART: using DMA and ISR possible? https://community.nxp.com/t5/Kinetis-Microcontrollers/Kinetis-UART-using-DMA-and-ISR-possible/m-p/661274#M40601 <HTML><HEAD></HEAD><BODY><P>Kinetisis K64F. I'd like to send characters out the UART using DMA, and receive using an ISR. I configured a DMA channel to send to the UART (triggered from the URT TRE signal). I set TDMAS, which says "<EM>Configures the transmit data register empty flag, S1[TDRE], to generate interrupt or DMA requests if C2[TIE] is set</EM>". So I set TIE as well, but now I never get the DMA transfer, but the RX_TX ISR is called repeatedly...</P><P></P><P>Is it possible to send with DMA while receiving with an ISR? If so what bits need be set?</P><P></P><P>Thanks in advance for any help,<BR />Best Regards, Dave</P></BODY></HTML> Fri, 09 Dec 2016 19:32:09 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Kinetis-UART-using-DMA-and-ISR-possible/m-p/661274#M40601 davenadler 2016-12-09T19:32:09Z Re: Kinetis UART: using DMA and ISR possible? https://community.nxp.com/t5/Kinetis-Microcontrollers/Kinetis-UART-using-DMA-and-ISR-possible/m-p/661275#M40602 <HTML><HEAD></HEAD><BODY><P>Yes, it works just fine if you set TDMAS as I intended and not TCDMAS as I typed the first time, aaarrggg...</P></BODY></HTML> Fri, 09 Dec 2016 22:00:13 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Kinetis-UART-using-DMA-and-ISR-possible/m-p/661275#M40602 davenadler 2016-12-09T22:00:13Z