PCF8523: Add additional registers #19
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This adds the following registers: * cap_sel, True to add additional capacitance to clock pins * calibration_mode, select one of two different clock calibration methods * calibration, set the clock calibration (offset) value in ~4ppm steps By accurately measuring the crystal frequency, these values can be selected to improve the calibration of the RTC from "minutes per month" to "seconds per month".
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Pylint will error about the use of the "signed" kw parameter until the related PR in Adafruit_CircuitPython_Register is merged. |
tannewt
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Jul 17, 2020
Co-authored-by: Scott Shawcroft <[email protected]>
adafruit-adabot
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Jul 22, 2020
Updating https://github.com/adafruit/Adafruit_CircuitPython_DS3231 to 2.4.0 from 2.3.2: > Merge pull request adafruit/Adafruit_CircuitPython_DS3231#27 from jepler/calibration-and-temperature Updating https://github.com/adafruit/Adafruit_CircuitPython_PCF8523 to 1.5.0 from 1.4.2: > Merge pull request adafruit/Adafruit_CircuitPython_PCF8523#19 from jepler/calibration-registers Updating https://github.com/adafruit/Adafruit_CircuitPython_PM25 to 1.0.2 from 1.0.1: > Merge pull request adafruit/Adafruit_CircuitPython_PM25#3 from dglaude/patch-1 Updating https://github.com/adafruit/Adafruit_CircuitPython_PyPortal to 3.3.0 from 3.2.5: > Merge pull request adafruit/Adafruit_CircuitPython_PyPortal#82 from fede2cr/master Updating https://github.com/adafruit/Adafruit_CircuitPython_MiniMQTT to 3.2.2 from 3.2.1: > Merge pull request adafruit/Adafruit_CircuitPython_MiniMQTT#44 from 2bndy5/master Updating https://github.com/adafruit/Adafruit_CircuitPython_ProgressBar to 1.3.0 from 1.2.3: > Merge pull request adafruit/Adafruit_CircuitPython_ProgressBar#8 from FoamyGuy/performance_boost Updating https://github.com/adafruit/Adafruit_CircuitPython_Requests to 1.5.0 from 1.4.3: > Merge pull request adafruit/Adafruit_CircuitPython_Requests#29 from brentru/update-cellular-3g
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This adds the following registers:
By accurately measuring the crystal frequency, these values can be selected to improve the calibration of the RTC from "minutes per month" to "seconds per month".
This depends on adafruit/Adafruit_CircuitPython_Register#39 as the "calibration" register holds a signed value, so it should not be accepted until that PR is accepted.