I have a board with a neo-m8n gps module and a HMC5983 compass. Now, I can communicate with HMC5983 via I2C, but the neo-m8n doesn't respond, when I call it. (send start "bit", than 7 bit address (0x42) with read bit and for this I don't get ack...) everything is out of box, so there're every settings has the default values. I see with u-center the gps module works. I tried to configure it via u-center, but I can't... (it seems it doesn't save the configuration)
I think I need to enable the I2C port, but how?
And how can I change this settings via u-center for permanent (so, if I remove the power and I add back the power the configuration doesn't lose)?