amescon RasPiComm User Manual - Page 5

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User

3.3. Raspicomm Setup

Execute the setup-script from your home directory (cd ~)

wget http://downloads.amescon.com/rpc_setup.sh && chmod +x ./rpc_setup.sh && sudo ./rpc_setup.sh

The setup-script requires the following actions:

•

Choose revision according to your Raspberry Pi (switch revisions with the 'c'-button)

•

Activate installation script (with the 'i'-button)

This script will install i2c-tools and permanently set up the following devices:

Joystick

RS-485

RS-232

Output (LEDs)

HWClock

•

Confirm driver installation with 'y'.

•

For the RS-232 to work, you'll need to restart your Raspberry Pi. All other devices are ready

to go without a restart.

3.4. Setup-Script Parameters

The script can be run with parameters that are however not needed for a routine setup. For a full list

of parameters please use one of the following commands:

./rpc_setup.sh /?

./rpc_setup.sh --h

./rpc_setup.sh --help

While the help-parameters do not need root access, most others will. For example, the superuser-

elevated command

sudo ./rpc.setup.sh --remove-autostart

will remove the autostart-sequence for your Raspicomm.

4. Using your Raspicomm

4.1. RS-485 Port

After the device driver is installed, the RS-485 port is added under this name:

/dev/ttyRPC0

You can use linux standard libraries to access the port.

Example code for C or C++:

int fd = open("/dev/ttyRPC0", O_RDWR | O_NOCTTY | O_NDELAY); ...

More code examples can be found here:

amescon

Manual

Sample

Applications.