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CC2541: I have a question about CC2541

minsu song
Prodigy 50 points

Part Number: CC2541

Hi.


I'm making a customized BLE module using CC2541 that is compatible with Arduino. 

I organized the circuit except for the antenna part(pin26, 26) with the newly purchased CC2541 (XTAL1 - 32M; XTAL2 - 32.768K; C221, C232 - 12pF; C331, C321 -15pF; C401 - 1uF; R301 - 56K;)

And then, I updated the firmware for the HM10 by following the link at https://forum.arduino.cc/index.php?topic=393655.0


I succeeded in updating the firmware but received no response when I sent AT command.

I think the response to the AT should come even without the antenna part, but I wonder if it's wrong.

 If it's wrong, I wonder what is the problem. 

I also have a CC debugger and I want to know how to use it. I have already checked and followed the User Guide but can not get the results I wanted. 

The content is difficult, so I need advice from someone with similar experience.

Thank you