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nRF52840 Pin Assignment Information

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Joined 2023-03-05

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Hello everyone,

I'm starting to develop a sensor that's going to use the nRF52840 as the ANT+ MCU. In order to make the comunication wiring with the host MCU, I need to know the pinout assigment for the nRF52840 (I.e. TX, RX, RTS, SUSPEND, SLEEP, etc) when it runs the SoftDevice s340, but I couldn't find this information. Could someone help me?

Thanks, Rodrigo.      
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Joined 2012-06-27

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The soft device does not provide such an interface. This would have to be written in your software that sits on top of the SoftDevice.      

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Ian Haigh

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Joined 2024-08-07

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Hi Rodrigo,

To get the pin assignments for the nRF52840 when using the SoftDevice S340, you'll need to configure them yourself in your firmware, as the SoftDevice doesn't assign specific pins for TX, RX, RTS, etc. by default. You can set these pin assignments in your code using the appropriate peripheral drivers (like UART or GPIO). For example, using the nRF5 SDK, you can define the pins in the UART configuration structure. Check the SDK documentation and examples for guidance on how to configure these peripherals. Also, make sure to review the nRF52840 Product Specification for detailed pin capabilities.

Good luck with your project!


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