kopia lustrzana https://github.com/eleccoder/raspi-pico-aprs-tnc
Missing installation step added
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README.md
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README.md
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@ -24,6 +24,12 @@ Your host platform for cross-compilation is assumed to be LINUX.
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1. Install the Pico-SDK following the instructions given in the [Raspberry Pi 'Getting Started' Guide](https://datasheets.raspberrypi.org/pico/getting-started-with-pico.pdf) (pdf)
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1. Set the `PICO_SDK_PATH` environment variable to point to your Pico-SDK installation directory
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1. Install the [pico-extras](https://github.com/raspberrypi/pico-extras) libraries:
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```
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cd $PICO_SDK_PATH/..
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git clone -b master https://github.com/raspberrypi/pico-extras.git
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```
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## Hardware
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@ -53,7 +59,7 @@ cd build
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The analog AFSK audio signal will be available at the filter's line-out. You can probe it by a scope, listen to it by using an audio amp, or connect it to any RF transceiver to send it on the air (ham radio license required).
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## TODO (Aug 2021)
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## TODO (Sept. 2021)
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- [x] Thorough evaluation, in general
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- [x] Send the APRS message on the console (USB or UART) rather than hard-coding
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@ -63,4 +69,4 @@ The analog AFSK audio signal will be available at the filter's line-out. You can
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## Ingredients / Acknowledgements
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- For APRS => AX.25 => PCM conversion I'm using [my modified version](https://github.com/eleccoder/ax25-aprs-lib) of [fsphil's ax25beacon](https://github.com/fsphil/ax25beacon)
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- For PCM => PWM conversion I'm using the audio lib from [pico-extras](https://github.com/raspberrypi/pico-extras) (WARNING: maturity seems to be alpha/beta)
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- For PCM => PWM conversion I'm using the `pico_audio_pwm` library from [pico-extras](https://github.com/raspberrypi/pico-extras) (NOTE: ATTOW, maturity seems to be rather alpha/beta)
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