On 09/21/2015 05:17 PM, Pagano, Patrick wrote: > ?i sent that message to it ]devicename /dev/ttyS1/S0 and it does not exist so > i tried to create it with mknod and it created the names in /dev but they are > not accessible.
mknod? this sounds like you are following advice from the 1990s. these days mknod is hardly ever needed: instead any devicefiles will be created on the fly by the resp. drivers. > > selecting device in the toggles in the pduino stuff only finds device 0 > > I am wondering if it's a linux issue because the only serial port at all is > > serial 0 /dev/ttyAMA0 > a little bit of googling hints that /dev/ttyAMA0 is indeed the name for the serial interface on the GPIO ports - which afaiu is what you want. so you just use that device. then you need to get the permissions correct. check whether the device is already setup to allow group-members to write to it, and which group that is: $ ls -l /dev/ttyAMA0 crw-rw---- 1 root dialout 4, 67 Sep 3 16:12 /dev/ttyAMA0 and eventually add the user running Pd to that group: pd@raspbian $ sudo bash root@raspbian # adduser pd dialout after that you only need to re-login as that user to let the new group membership have any effect. gadsr IOhannes
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