ATBTLC1000 is not discoverable

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We want to hook up ATBTL1000 to an external host MCU (AT32UC3A0512) via UART to establish a serial data communication over Bluetooth. Basically, we want to have a cable replacement solution for data transfer between a host PC/iPhone/Android/Mac and out device. 

Following are the connections between the BT module and MCU. We haven't connected the 6 UART pins to the MCU yet, because we first wanted to see if the chip is even discoverable with the 3.3V, GND, Wake and Chip_EN pins. Despite seeing 3.3V, GND and 32.768 kHz clock on the corresponding pins, and not connected pins floating high, on the Oscilloscope, the BT module is not discoverable. 

P4 - NC 
P5 - NC 
P6 - 3.3V 
P7 - NC 
P8 - NC 
P17 - 3.3V 
P20 - 3.3V 
P21 - NC 
P22 - NC 

P1 - GND 
P6 - 3.3V 
P9 - GND 
P13 - GND 
P22 - 3.3V 
P24 - GND 

What is wrong with this set-up? Please advise. 

 

(FYI - When I opened a ticket, tech support seemed to suggest that I need a API for the chip to be discoverable, which makes no sense to me!! if you have any experience with this module, could you verify this statement or share with me what I could be doing wrong?)

Last Edited: Tue. Jul 17, 2018 - 09:44 PM
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Thanks for pointing that out. I will post my question there. 

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Top Tips:

  1. How to properly post source code - see: https://www.avrfreaks.net/comment... - also how to properly include images/pictures
  2. "Garbage" characters on a serial terminal are (almost?) invariably due to wrong baud rate - see: https://learn.sparkfun.com/tutorials/serial-communication
  3. Wrong baud rate is usually due to not running at the speed you thought; check by blinking a LED to see if you get the speed you expected
  4. Difference between a crystal, and a crystal oscillatorhttps://www.avrfreaks.net/comment...
  5. When your question is resolved, mark the solution: https://www.avrfreaks.net/comment...
  6. Beginner's "Getting Started" tips: https://www.avrfreaks.net/comment...
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I will lock this one.

 

Jim

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