i.MX ProcessorsのトピックRe: In Serial Downloader mode, download using USB, PC does not link to USB https://community.nxp.com/t5/i-MX-Processors/In-Serial-Downloader-mode-download-using-USB-PC-does-not-link-to/m-p/1094219#M160325 <HTML><HEAD></HEAD><BODY><P>Hi xiaojun</P><P></P><P>according to Figure 8-2. Serial Downloader boot flow</P><P><A href="https://www.nxp.com/webapp/Download?colCode=IMX6ULRM" target="_blank"><STRONG>i.MX 6UltraLite Applications Processor Reference Manual</STRONG></A></P><P>both uart and usb are polling by ROM. So uart activity may prevent</P><P>PC link to USB.</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Wed, 29 Apr 2020 10:17:29 GMT igorpadykov 2020-04-29T10:17:29Z In Serial Downloader mode, download using USB, PC does not link to USB https://community.nxp.com/t5/i-MX-Processors/In-Serial-Downloader-mode-download-using-USB-PC-does-not-link-to/m-p/1094218#M160324 <HTML><HEAD></HEAD><BODY><P>In my design, i.mx6ul's UART2_RXD, UART4_RXD, UART5_RXD connected to other MCUs of UART.Internal Boot start-up, i.mx6ul and MCU's UART data communication is no problem.<BR />When in Serial Downloader mode, and this MCU is working, using USB download, the PC does not link to USB.<BR />If the MCU stops working, the PC can link to USB and download it complete.<BR />Is there a BUG in i.mx6ul?</P></BODY></HTML> Wed, 29 Apr 2020 08:48:28 GMT https://community.nxp.com/t5/i-MX-Processors/In-Serial-Downloader-mode-download-using-USB-PC-does-not-link-to/m-p/1094218#M160324 353533661 2020-04-29T08:48:28Z Re: In Serial Downloader mode, download using USB, PC does not link to USB https://community.nxp.com/t5/i-MX-Processors/In-Serial-Downloader-mode-download-using-USB-PC-does-not-link-to/m-p/1094219#M160325 <HTML><HEAD></HEAD><BODY><P>Hi xiaojun</P><P></P><P>according to Figure 8-2. Serial Downloader boot flow</P><P><A href="https://www.nxp.com/webapp/Download?colCode=IMX6ULRM" target="_blank"><STRONG>i.MX 6UltraLite Applications Processor Reference Manual</STRONG></A></P><P>both uart and usb are polling by ROM. So uart activity may prevent</P><P>PC link to USB.</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Wed, 29 Apr 2020 10:17:29 GMT https://community.nxp.com/t5/i-MX-Processors/In-Serial-Downloader-mode-download-using-USB-PC-does-not-link-to/m-p/1094219#M160325 igorpadykov 2020-04-29T10:17:29Z