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README.md

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# ATMEGA4809 Noise Countermeasures for ADC Applications
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This is an example for noise countermeasures for ADC applications on the ATMEGA4809, this is a general example which is applicable to the whole megaAVR 0-series.
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This is an example for noise countermeasures for ADC applications on the ATMEGA4809, this is a general example which is applicable to the whole megaAVR 0-series. The example code is based on the application note [AN2551](#Related-Documentation)
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## Related Documentation
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- [AN2551 - Noise Countermeasures for ADC Applications ](https://www.microchip.com/wwwAppNotes/AppNotes.aspx?appnote=en600674)
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- [ATmega4809 Family Product Page](https://www.microchip.com/design-centers/8-bit/avr-mcus/device-selection/atmega4809)
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- [ATmega4809 Device Page](https://www.microchip.com/wwwproducts/en/ATMEGA4809)
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## Software Used
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- [MPLAB X IDE or v5.40 newer](https://www.microchip.com/mplab/mplab-x-ide)
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- [MPLAB X IDE v5.40 or later](https://www.microchip.com/mplab/mplab-x-ide)
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- [Data Visualizer](https://www.microchip.com/mplab/avr-support/data-visualizer)
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- ATmega_DFP 1.4.351 or newer
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- ATmega_DFP 1.4.351 or later
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## Hardware Used
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- ATmega4809 Xplained Pro [(ATMEGA4809-XPRO)](https://www.microchip.com/developmenttools/ProductDetails/ATMEGA4809-XPRO)
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- [ATmega4809 Xplained Pro](https://www.microchip.com/developmenttools/ProductDetails/ATMEGA4809-XPRO)
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## Setup
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* Connect the ATmega4809 Xplained Pro to your computer with a micro usb cable.
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* The ADC input is mapped to `PD5` and will change the ADC values being sent over UART depending on the voltage applied.
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## Operation
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1. Open `NoiseCountermeasuresforADCApplicationswithmegaAVR0-series.X` in MPLAB
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2. Connect the ATmega4809 Xplained Pro to your computer with a micro usb cable.
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3. Make sure the kit is selected as the tool to be programmed under project settings
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4. Press the make and program button to program the device.
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5. Open data visualizer to interact with the virtual comport over UART on the devkit. The baud rate is `19200`
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6. Follow Appendix A in [AN2551](#Related-Documentation) for step by step instructions on how to graph the samples
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## Operation
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Filtered ADC values will be passed over the UART port, these can be parsed or graphed for a visual understanding of ADC value.
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The ADC input is mapped to `PD5` and will change the ADC values being sent over UART depending on the voltage applied.
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## Summary
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## Conclusion
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We have here shown how to get started with the [AN2551 - Noise Countermeasures for ADC Applications](#Related-Documentation) appnote. For more details about the code and theory of operation please inspect the appnote itself.
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We have here shown how to get started with the [AN2551](#Related-Documentation) appnote. For more details about the code and theory of operation please inspect the appnote itself.

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