https://devzone.nordicsemi.com/f/nordic-q-a/46200/twi-not-getting-properlyDear nordic, I started to integrate PCF853(RTC module) using i2c. but its not getting proper output can you help me what wrong i do? slave address:- 0x51 read register address:-0x01(control register2) below code iam trying to read control register2en-USTelligent Community 13Mon, 15 Apr 2019 13:29:30 GMThttps://devzone.nordicsemi.com/thread/182135?ContentTypeID=1Mon, 15 Apr 2019 13:29:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f4522247-9efb-4bda-8326-8724552270ebJ&#248;rgen Holmefjord<p>Hi,</p> <p>Do you get any errors from the TWI peripheral when trying to read the device (check for <a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.3.0/group__nrf__drv__twi.html#ga8dd2153e3c8fc75f486dc1fa33219c93">other events</a> in&nbsp;twi_handler())? Where is&nbsp;PCF8563_I2C_ADDR_WRITE, reg, and&nbsp;RW_Reg defined?&nbsp;</p> <p>Can you provide the datasheet of the device?</p> <p>Best regards,<br />Jørgen</p><div style="clear:both;"></div>