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Run the PTT signal integrity test on the radio transmitter hardware. Use when the user asks to test the transmitter, run a PTT test, check I/Q outputs, or verify transmit signal quality. Requires an Analog Discovery 2 connected to the radio.
Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.
Based on SOC occupation classification
Compile the PhoenixSketch production firmware and flash it to the Teensy 4.1 radio over USB. Use when the user asks to build, compile, upload, flash, deploy, or program the radio / Teensy / Phoenix firmware.
Compile and flash the PhoenixSketch firmware to the T41 radio (Teensy 4.1). Use when the user wants to build, compile, upload, or flash the production firmware to the radio. Requires the radio connected via USB at /dev/ttyACM0.
Compile and run the PhoenixSketch unit tests under code/test using CMake + Google Test. Use when the user asks to run, build, or check the unit tests / ctest / Google Test suite for the radio firmware.
Measure execution time of functions or code regions in the PhoenixSketch firmware by instrumenting the source with Flag() calls and capturing the resulting pin transitions on an Analog Discovery 2. Use when the user wants to profile, time, benchmark, or characterize how long a piece of radio code takes to run.
| name | transmit-test |
| description | Run the PTT signal integrity test on the radio transmitter hardware. Use when the user asks to test the transmitter, run a PTT test, check I/Q outputs, or verify transmit signal quality. Requires an Analog Discovery 2 connected to the radio. |
Run transmit_test.py to verify the radio transmitter's I/Q outputs are clean sinusoids across repeated PTT cycles. This detects intermittent failures where PTT activation produces discontinuities, zeroed channels, or distorted waveforms.
An Analog Discovery 2 must be connected via USB with the following wiring:
Run from the transmit directory:
cd /home/oliver/Sync/Ham/T41/Software/Phoenix/code/test/transmit
python3 transmit_test.py -n $iterations
If no iteration count is provided, default to 5 for a quick smoke test. For a full test run, use -n 100.
The program exits with code 0 if all iterations pass, or code 1 if any fail. Each iteration reports:
Failed iterations automatically save raw waveform data to failures/ as .npz files along with a png plot.
| Symptom | Likely cause |
|---|---|
| RMS near zero on one/both channels | I/Q output not starting after PTT |
| Low SNR, correct frequency | Discontinuity or glitch in waveform |
| Flag | Default | Description |
|---|---|---|
-n, --iterations | 100 | Number of PTT cycles |
--settle-time | 0.5 | Seconds after PTT engage before capture |
--acquire-time | 0.1 | Capture duration in seconds |
--interval | 0.5 | Seconds between iterations |
--min-snr | 20.0 | Minimum SNR (dB) to pass |
--save-all | off | Save waveform data for passing iterations too |
.npz files were saved, you can load and inspect them:
import numpy as np
data = np.load("failures/fail_iter0001_TIMESTAMP.npz")
ch1, ch2 = data["ch1"], data["ch2"] # I and Q waveform arrays
sr = float(data["sample_rate"]) # 100000 Hz
transmit_test.py based on test failures -- the failures indicate a hardware/firmware problem in the radio, not a bug in the test program.The program will print Failed to open device and exit with code 1. This is expected if no AD2 is plugged in. Do not retry -- inform the user that the hardware is not available.