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imxrt1064 in serial downloader mode does not reply

Question asked by Tamir Michael on Jan 8, 2020
Latest reply on Jan 9, 2020 by Tamir Michael



I have a imxrt1064 that is configured to boot in serial download mode with a USB cable connected to my PCB. And indeed, I see a HID USB device when I execute "lsusb", just as expected:


Bus 001 Device 058: ID 1fc9:0135 NXP Semiconductors SE Blank RT Family


However, trying to send commands to the device using "blhost" always yields a timeout:


sudo ./blhost --u 0x1FC9,0x0135 -- get-property 1
Inject command 'get-property'
usb hid write, time left = 5000
sendCommandGetResponse.readPacket error 5.
Response status = 10004 (0x2714) No response packet from target device.


The flash does not contain any bootloader at the moment.


Any comment would be much appreciated !