AnsweredAssumed Answered

i.MXRT Serial Downloader USB HID Enumeration Failed

Question asked by Lukasz Skrzypczak on Jun 18, 2019
Latest reply on Jun 18, 2019 by jeremyzhou


We're using i.MXRT1051 in our project. Because of boot source some fuses needed to be burned. Those are:

- BT_FUSE_SEL @0x06

- eMMC_BOOT @ 0x05

- eUSDHC_BOOT @ 0x05

- Default_FlexRAM_Part (1011) @ 0x2D - 448KB DTCM, 0KB ITCM, 64kB OCRAM

And now uC can't boot Serial Downloader. We get:


---===>Device Information<===---

ConnectionStatus: FailedEnumeration
Current Config Value: 0x00 -> Device Bus Speed: High (is not SuperSpeed or higher capable)
Device Address: 0x00
Open Pipes: 0
*!*ERROR: No open pipes!

===>Device Descriptor<===
*!*ERROR: bLength of 0 incorrect, should be 18
bLength: 0x00
bDescriptorType: 0x00
bcdUSB: 0x0000
bDeviceClass: 0x00
*!*ERROR: Device enumeration failure


And here's the question - is it possible that reconfiguration of FlexRAM affected Serial Downloader ?

Please help,

Thanks in advance  - Lukasz