a6476bd813
- Use standard RIOT style `ina2xx_params_t` on initialization as explained in
[1] instead of a custom API
- Provided a default configuration via `ina2xx_params_t` as required by [1] that
works fine for the INA219 breakout board and with an optimal resolution that
still covers the whole range of USB high-power devices (500 mA @ 5V) with a
comfortable safe margin.
- Changed initialization procedure to include a device reset and connectivity
test, as required by [1]
- The calibration value is now calculated by the driver
- This simplifies using the driver a lot
- The user can still choose a trade-off between range and resolution that
matches the application requirements, but now among predefined values
- This allows the driver to easily convert the raw data into meaningful
physical data, as the resolution of the raw data is known
- All measurements are provided as meaningful physical data as required by [1]
[1]: https://github.com/RIOT-OS/RIOT/wiki/Guide:-Writing-a-device-driver-in-RIOT
16 lines
712 B
Markdown
16 lines
712 B
Markdown
# About
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This is a manual test application for the INA219/INA220 current and power
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monitor driver.
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# Usage
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This test application will initialize the sensor with the default parameters
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in @ref ina2xx_params.h
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After initialization, the application will print a table of the devices
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measurement data. If the I2C interface is fast enough, one row corresponds to
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one measurement of the device. (The sensor indicates when a new measurement is
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available via flags, this flags are read until the measurement is done. The
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duration of one measurement depends on the sensor settings and is between
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84µs and 68.1ms. Please note that blocking stdio might very well be the
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bottleneck causing the test to miss measurements.)
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