RTC DS3231 with NRF52840

[olivier1870]

Good morning,
I would like to store data in the Istby memory, with timestamps. I tried to connect a DS3231 and use the Adafruit RTC library but the system crashes (i.e. compilation through Arduino IDE foes fine, but the prog does not run for some reason)
Any idea?

Many thanks

[adafruit_support_carter]

Please post a photo of your setup showing how everything is connected. What arduino sketch are you trying to run?

[olivier1870]

Many thanks for your quick reaction.
The setup is as follow:

Itsby NRF52840 + Oled display 1.3 (Adafruit) + pressure sensor (MS58303): connection via I2C -> all works fine

I added an RTC DS3231 (Adafruit) to I2C -> all ok.

I picked up the example here: File->Examples->RTClib->ds3231 -> rtc commands seem to be blocking the prog (e.g. DateTime now = rtc.now();)

[adafruit_support_carter]

What shows up with an I2C scan?
https://learn.adafruit.com/scanning-i2c ... s/overview

[olivier1870]

Hi

0x3D = OLED display
0x76 = Pressure sensor
0x68 = RTC (DS3231)

cheers

[olivier1870]

Noe the example ds3231 works fine! I must have made a mistake ...

Many thanks for your help!!!

Wish you a nice day