A problem with interfacing HC-05 with nano arduino kit(Atmega328p)

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I have a problem with HC-05 interfacing with nano arduino kit(Atmega328p) by UART  that  i am afraid of interference that could happen  due to programming or debugging. 

 

I want to use SPI interface instead of UART to Bluetooth module could this cause any error especially with AT Command. 

 

Could anyone ensures to me that is safe to use SPI interface with HC-05 like UART?  

I am living to bring up new earth ,and not to eat and destroy earth.

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Mohamed asaad wrote:
Could anyone ensures to me that is safe to use SPI interface with HC-05 like UART?

I've not seen an HC-05 module with an SPI interface, most only have the usart interface, or are you talking about the module itself and not one of these:

https://www.amazon.com/dp/B07C5Q...

 

Note: if your concerned about "sharing" the single usart with usb/bootloader/debug i/o, I would suggest you use softUSART and any two digital i/o pins for the HC-05 comms.

Tell us more about your project and someone may be able to help guide you better.

 

Jim

 

 

FF = PI > S.E.T