Setup The module is loaded either with dtoverlay i2c-rtc pcf8523=true or at boot time using dtoverlay=i2c-rtc,pcf8523 in /boot/config.txt, as explained here. Result Then, the RTC is initialized using ...
The PCF8523 datasheet (https://www.nxp.com/docs/en/data-sheet/PCF8523.pdf) states in section 8.11.2: "For this device, a repeated START is not allowed. Therefore, a ...