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marcello

Setup problem latest raspian

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I used to have a working RS485 Shield on my raspberry. however when I try to setup this same shield on the latest raspian I have problems:

 

from the guide: http://learn.linksprite.com/raspberry-pi/shield/user-tips-of-rs485-shield-for-rpi/

 

I am supposed to install python (which is already installed by default)

sudo apt-get install python-pip

 

 

then sudo pip install wiringpi

 

There I get an error: python.h not found ?

 

 

 

Finally:

Disable log in from the serial port:

$ sudo nano / etc / inittab

and comment out ” T0: 23: respawn :/ sbin / getty-L ​​ttyAMA0 115200 vt100″

 

--> /etc/inittab is no longer present on latest raspian ?? Is this really required ?

 

I can communicate thru the RS485 port but after 2-3 serial commands it does not work anymore ?

 

Any advice ?

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Yes this worked, but what about:

 

and comment out ” T0: 23: respawn :/ sbin / getty-L ​​ttyAMA0 115200 vt100″

 

--> /etc/inittab is no longer present on latest raspian ?? Is this really required ?

 

 

I can send and receive about 3-4 times then it somehow does not receive anymore

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