search

nxp-mcuxpresso / sbl

Other
39 stars 10 forks source link

using uart1 instead of USB #2

Closed mafekam314 closed 2 years ago

mafekam314 commented 2 years ago

Hello,

So I compiled the sbl boot and burned the image on flash, but I discovered that the uart1 on demo board is only for debug. and the usb is used for boot communications. However I don't need the debug on uart I need it for loading the image. from the documentations it say that sbl support usb and uart so how I can unblock uart1 as communication channel ? please help ?

Tim-Wang38 commented 2 years ago

Hi, When the sbl start to run, it will wait few seconds to let you run into ISP mode, in this mode, you can load your image into the flash. The specific operation please refer to the chapter7.2.1 of the UG.

mafekam314 commented 2 years ago

ok thank you my bad. I tried now and I was able to connect to both usb and uart. Yesterday I tried to connect to uart but I had no luck only with usb but maybe I had a problem with uart settings anyway thanks for fast response.