kopia lustrzana https://github.com/kholia/pico_ft8_xcvr
dc2de91a99
- Sync with upstream 'ft8_lib' code - Whitespace conversions and fixes - 'Easy Frequency Counter' using Pico itself - Si5351 calibration example for Pi Pico - GPS support for timing (https://github.com/kholia/pico-arduino-compat) |
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.. | ||
si5351_calibration | ||
.gitkeep | ||
Makefile | ||
Pico-PWM-Pinout.png | ||
README.md | ||
Screenshot_2022-08-05_09-38-12.png | ||
Screenshot_2022-08-05_11-43-14.png | ||
Screenshot_2022-08-07_18-56-13.png | ||
arduino-cli.yaml | ||
board_detect.py | ||
raspberry_pi_Pico-R3-Pinout-narrow.png |
README.md
What
Traditionally Si5351 calibration has required an external SDR or frequency counter. In our PDX (PDX++) design, we implement a frequency counter on the Pico micro-controller itself, and feed it with CLK2 signal from the Si5351. This way are able to calibrate Si5351 natively without requiring external hardware.
Connections
Note: GP16 is SDA. GP17 is SCL. GP9 is the frequency input.
Automatic calibration is implemented - Wait for around a minute for it to kick in ;)
Credits
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Burkhard Kainka - RPi Pico Projects and Circuits
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WB2CBA, Dr. Pedro, Alan (ADX + PDX team)
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https://github.com/etherkit/Si5351Arduino/blob/master/src/si5351.cpp