Serial Downloader mode

[GaganaTN]

Hi all,

We have designed a board using the i.MXRT1050 evk board scheme, but nothing changed. We are unable to detect the board in serial boot mode.

Tried the same thing with the Evaluation board and its working fine checked with all the schemes compared with our manufactured board and evaluation board, but couldn't find any solution, and we are stuck at the final stage of our project. It would be of great help if there is any solution  for this you can provide.

Thanks & Regards,

Gagana

[Omar_Anguiano]

Hello

What is the state of the boot_mode pins? What process are you following to enter serial download mode?

Best regards,
Omar

[GaganaTN]

Hi @Omar_Anguiano ,

BOOT_MODE[1:0] (SW7-3 SW7-4)

01
Serial Downloader

This is the configuration done on 3rd and 4th switch in sw7 for serial downloader mode.

Thanks & Regards,

Gagana

[Omar_Anguiano]

First, the ROM code polls the UART1 signals from TXD1/RXD1. Add a 10-kΩ pull up resistor to the TXD1/RXD1 pins to avoid an invalid trigger of the UART port in serial download.

Best regards,
Omar