I have bought a BLE Nano 2 kit with DAPLink board and I test it since some days with the Arduino IDE.
I have the same problem with I2C. I use the BLE_Examples/SimpleChat example which works very well with the “nRF Connect” application. Now I try to use I2C to drive a BME280 sensor. I have not able to have correct SDA and SCL signals on the DAPLink.
I also try the TWI/AT24C512_Demo example without success. The SCL signal is always high, SDA is always low.
I have tried also the BLE Nano 2 without DAPLink, on a breakboard supplied directly with 3.3V, I have the same problem: I2C do not runs.
My project is to make a BLE object with I2C sensors always in sleeping mode, with periodic wake up (how to make this ?), take measures and it by bluetooth and returns in sleeping mode.
Is somebody know how to use BLE Nano 2 I2C with Arduino IDE ?