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Explorer 8 Development Board To Pom


TonyIta

Question

Dear all 

I am trying to interface this Pom  Pmod BLE: Bluetooth Low Energy Interface, Please see link below 

https://store.digilentinc.com/pmod-ble-bluetooth-low-energy-interface/

With the Explorer 8 Development Board, Please See link below 

http://ww1.microchip.com/downloads/en/DeviceDoc/40001812B.pdf

On page 40 J17 connector Explore 8 does not match with the Pmod connector. in more detail the TX pin on evolution board is 4 "RC6-Pin-Pic", while the RX pin on the Bluetooth Pom is 2. 

Someone can help on this issue please 

Many thanks 

Antonio 

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Hi @TonyIta,

The short answer is you will need a UART Crossover Cable such as this one, though you can use individual wires as well.

The longer answer is that back in 2010 or so Microchip changed the pin arrangements on their microcontrollers so that the RX and TX lines are now on pins 2 and 3 rather than 3 and 4. You can see this more specifically in this document here.

Let me know if you have any questions about this.

Thanks,
JColvin

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