Problem using I2C

[Andrei]

Hello Everyone) Have new unsolved problem. My custom PCB based on nrf52832 SoC has only controller, FXOS8700 accelerometer and MAX30205 health temperature sensor. For communication between ICs I'm using I2C Bus, BUTTTTT (I'm using mbed 5.0) when I try to write something to register, my app never return (i2c.write).....Tried on all frequencies..... I'm using TI TPS63031 DCDC converter for Vdd_nrf and don't use shielded Inductor....Can it be cause of the problem?????Thank for YOUR RESPONSE)))) UPDATE: 6.02 I2C work on other ports, but if I use port 7 and port 5, it don't work....

[Jørgen Holmefjord]

Do you use any UART communication in your code? Pin 7 and 5 is used på the UART interface on the nRF52 DK, so this might cause some problems in mbed if you have not changed the default pin defines. Could you post your code here or link to your project?

[Andrei]

I use standard HealthTermometer profile code, only added defining i2c bus. On all ports it works, if port5 is not used. port7 and port6 work fine....But I tried it only with DK. With my custom board I've only tried 5 and 7,because other port are not available on PCB...

[Andrei]

Thank You. Problem solved. Inside mbed was created uart instance....UART was disabled and all work...))))