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raspberry_boards:serial_modification [2016/07/10 20:09] admin |
raspberry_boards:serial_modification [2020/06/11 22:13] |
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| - | ==== Serial modification ==== | ||
| - | For using the serial line of the Raspberry Pi you have to make some small modifications (just if you hadn't run the alamode setup): | ||
| - | |||
| - | In the file: /boot/cmdline.txt\\ | ||
| - | change:\\ | ||
| - | dwc_otg.lpm_enable=0 console=ttyAMA0,11520 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait | ||
| - | to:\\ | ||
| - | dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline rootwait | ||
| - | |||
| - | And in the file: /etc/inittab\\ | ||
| - | comment out:\\ | ||
| - | 2:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100 | ||
| - | to: \\ | ||
| - | #2:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100 | ||
| - | |||
| - | Because the Arduino IDE is not able to find the tty connection of the serial port (ttyAMA0) you have to mirror it to ttyS0. That is to be done with a file in: /etc/udev/rules.d\\ | ||
| - | then name it (the number is according to the order in which the rules were loaded):\\ | ||
| - | 85-paperduinopi.rules | ||
| - | and put in the following line:\\ | ||
| - | KERNEL=="ttyAMA0", SYMLINK+="ttyS0",GROUP="dialout",MODE:=0666 | ||
| - | |||
| - | More informations:\\ | ||
| - | [[http://www.andremiller.net/content/raspberry-pi-and-arduino-via-gpio-uart|www.andremiller.net]] | ||
| - | |||
| - | [[http://codeandlife.com/2012/07/29/arduino-and-raspberry-pi-serial-communication/|www.codeandlife.com]] | ||