I'm looking for an app note or HOWTO on how to successfully build a .bin file and upload to a QN908X chip.
I'm assuming the process is drag 'n' drop on a windows PC but I'm running into a few problems:
1. I have access to a QN908XDK board but am unable to flash it using the built in JLINK interface via IAR. I get a "failed to load flash loader" error. This happens with every example project I've tried from the SDK.
2. When I short JP15 and reset the board, I get an autoplay message:
Any attempt to copy in a new firmware.bin (from the SDK sample projects) image fails:
I'm not yet sure what CRP DISABLD means but I assume that it's not good and that my board is likely hosed somehow. Any suggestions on how to recover?
3. I am working on our own board with the same MCU. I can flash directly via an external JLINK and IAR. When I try to go into ISP mode, the device shows up as an unknown USB device. :
This implies that I'm missing some sort of setup step that configures the ISP mode to a particular vendor/id, no? I have found no documentation thus far on how to accomplish this.
4. I have not been able to find any documentation on how to set up an IAR project so that it produces a valid ISP .bin file.
Any help would be greatly appreciated!