Other Parts Discussed in Thread: IWR6843
Tool/software:
Hello Community,
We have IWR6843 on a custom board. It is High Security chip. At the moment no OTP of keys is done.
After the power-up of the board, I am sending a Radar image from the external MCU to IWR6843 with SPI boot protocol.
The protocol runs normally with our previous revision board where IWR6843 General chips were there and I could transfer the complete image without any problem.
On our new board, we have High Security version of Chip now, but the transfer fails after 16 packets.
With debugger, I could not connect with the chip, not sure why. I could debug the processor with previous revision boards. The only difference in this revision of board is High Secure chip type.
When I tried to debug the SPI boot process on external processor, I never even got RL_DEV_AE_MSSPOWERUPDONE_SB and SPI boot fails at initial stage itself.
Without debugging, when I directly runs the image, I get async event RL_DEV_AE_MSSPOWERUPDONE_SB and SPI boot protocol starts but then I always get RL_DEV_AE_MSS_BOOTERRSTATUS_SB async event after 16 packet transfer and then the transfer fails
Before MSS Boor error, I get this below message in SPI boot communication:
Device [0] [WR]0x5678 0x8765 0xFFFF 0xFFFF 0xFFFF 0xFFFF 0xFFFF 0xFFFF
Device [0] [RD]0xDCBA 0xABCD
Device [0] [RD]0x8116 0x000C 0x130C 0x0000 0x0000 0x6BD1 6%..
Device [0] [RD]0xDCBA 0xABCD
Device [0] [RD]0xA036 0x0026 0x000C 0x0000 0x0001 0x5F96
Device [0] [RD]0x5005 0x0018 0x1135 0x0006 0x0000 0x0200 0x0000 0x0000 0x0000 0x0000 0x0000 0x0000
Device [0] [RD]0xA211
The highlighted message represents: CERT FIELD INVALID DECRYPT KEY INDEX
When no OTP has been flashed and no image encryption is done, why is the chip giving Decrypt Key Index failure?
Thanks and Regards,
Swapnil
