Sorry for my stupid English… I’m playing with a RTC (DS3231 / DS3232) and don’t understand working with “Wire.write” on I2C with the control register. The control register 0E contains several information BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0 EOSC BBSQW CONV RS2 RS1 INTCN A2IE A1IE And …

IC2 / DS3231 / DS3232 / Wire.write / Control Register 0x0E

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