Combine a SAMD21 and a INA260 to create a USBTMC instrument.
| Adafruit SAMD21 QT PY | Adafruit INA260 | STEMMA QT / QWIIC |
|---|---|---|
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SDA, SCL, 3.3V and GND signals shared using the STEMMA QT cable (just add pins to INA260 board). Program the SAMD21 QT_PY board by double-clicking the push-button and drag-n-drop the provided UF2 file
Here are the supported SCPI commands:
*IDN? (query the instrument name, returns 'INA260\nINA260:VOLTAGE? INA260:CURRENT? INA260:POWER?')
*RST (Sends the Reset command to INA260 over I2C)
INA260:VOLTAGE? (query the Bus voltage on INA260)
INA260:CURRENT? (query the current flow on INA260, negative means reverse direction)
INA260:POWER? (query the power on INA260)
My C string parsing is very crude so the SCPI command must match what I have listed above (or be in lowercase). All the major credit goes to Nathan Conrad (TINYUSB's USBTMC author) and Alex Taradov's SAMD21 bare metal peripheral control.