driver for lsm303agr sensor

Hello rioters,

I am doing some experiments with navigation sensors on the X-NUCLEO-IKS01A2 shield. Unfortunately I was only able to get data from LSM6DSL accelerometer and gyroscope, not from LSM303AGR magnetometer, because I could not find an appriopriate driver for RIOT. Is there any easy way to access the sensor or do I have to write a driver myself? I have only just begun programming in C.