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Hot!RN-52-EK-1 doesn't work command mode.

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maeda
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2019/08/21 21:36:03 (permalink)
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RN-52-EK-1 doesn't work command mode.

Hi!

I set the board according to the manual, RN52 Eval Kit User Guide Chapter2.
Getting Started. but I cannot send the command by UART and RN52-EK-1 doesn't respond anything.

I set the board like the following

2.2 HARDWARE REQUIREMENTS
Connecting USB-UART of RN-52-EK-1 and PC(Windows10) by USB
Connecting speaker to RN-52-EK-1(J9)

2.3 POWER UP THE BOARD
Power on RN-52-EK-1
Red LED and blue LED blink alternately.
*When I connected Bluetooth, only red LED blinked.
In this condition, I had the same result in the below process.

2.4 USING THE EVALUATION KIT
Connecting serial port at Tera Term(V4.102)
Return code Reception:CR+LF
Return code transmission:CR+LF
Chinese character - Reception :UTF-8
Chinese character - transmission :UTF-8
Local Echo :valid
Port :COM3
Speed :115200
Data :8bit
Parity :none
Stop bit :1bit
Flow control :none

After this, I connected J3-5(GPIO9) and J3-6(GND)of RN-52-EK-1.
and set GPIO9 low for Command Mode.

Then I input "CMD" - Enter - "V" - Enter.
I expected the version was shown, but no response.

Could you advise me how to settle this issue? 
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