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moononournation / ATtinyPowerMeter

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BRNG bit is not set in high_value_mode #3

Closed zalexua closed 3 years ago

zalexua commented 3 years ago

BRNG bit is not set when you switch to to_high_value_mode()

define CONFIG_UPPER_3A 0b00011100

should be

define CONFIG_UPPER_3A 0b00111100

while it's checked when reading read_bus_voltage()

moononournation commented 3 years ago

Oh yes, seems I have been missing the Bus Voltage Range. Have you tried the readings is correct after the changes?

zalexua commented 3 years ago

Oh yes, seems I have been missing the Bus Voltage Range. Have you tried the readings is correct after the changes?

Yes. That just allows more wide range of voltages. Here is nice reading about that. https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/686865/ina219-bus-voltage-accuracy According to it full voltage ()32v range is just better than 16v, so by default it would be better.