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CC2511: Can't read the Chip ID

CMiller
Prodigy 20 points
Part Number: CC2511

Tool/software:

I'm getting started with trying to write the CC Debugger bootloader to a "bare" CC2511.  I'm referencing the datasheet as well as swra124 and can't seem to get anything coming back from the CC2511.  Steps I have taken:

  1. Set the reset low
  2. Write two DC high pulses
  3. Set Reset high
  4. Send 0x68 over DD.

I have attached a screenshot of my logic analyzer results and it appears to match what the swra124 shows but I'm not getting any activity on the DD line after sending the 0x68 command.

Am I missing a step?

Any assistance would be greatly appreciated.

Kindest regards.

  • 0
    TI__Expert 8511 points

    Hello Craig Miller,

    I hope you are doing well. First I wanted to double check that the device (CC2511) is powered and plugged into your computer and the CC Debugger is connected to the CC2511 as well as your computer, the green light should be on. 

    Is this a custom board/PCB?

    Thanks,
    Alex F

  • 0 in reply to Alex Fager
    Prodigy 20 points

    Hello Alex Fager,

    I'm doing well, I hope you are as well.

    Yes, the CC2511 is powered via USB C, with the green led illuminated.  

    This is a custom board/PCB.  To verify everything is correct on the board, I connected it to a CC Debugger.  Using SmartRF Studio, I can see that the CC Debugger is correctly connected to a CC2511 chip.

    Thank you for your response.

    Kindest regards

  • 0 in reply to CMiller
    TI__Expert 8511 points

    Hello Craig Miller,

    Thank you for the extra information! Has your custom PCB been reviewed by our hardware team already? Its good to see that SmartRF Studio picks up the device. I will see if my other team members might have an idea of whats wrong here. 

    Thanks,
    Alex F

  • 0 in reply to Alex Fager
    Prodigy 20 points

    I slowed down the clock and had to adjust where the data was being written within the clock pulse and I can get the chip id, thanks!