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Gps

Enable UART Port on Raspberry Pi

By standard the UART interface is configured as serial console. If you want to use the UART interface for other things, e.g. for a GPS module, the standard function needs to be deactivated. Open the cmdline.txt file with the Nano text editor. sudo nano /boot/cmdline.txt and remove the following part from the file. console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 The content of the file should look like this dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait Exit the editor with ctrl+x and save the changes using y.Open inittab sudo nano /etc/inittab and search for the following line. T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100 Insert a # at the beginning of the line to comment this line. Doing so the line should look like this. #T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100 Exit the editor the same ways as in the previous step.From Kernel 3.18.x on the following step must be excecuted aditionally. sudo nano /boot/config.txt Search for the following line and remove the # at the beginning of the line. #dtparam=spi=on Exit the editor the same ways as in the previous step. Show kernel version uname -aRestart RPI. sudo reboot