Hobbyist Toolkit

cancel
Showing results for 
Search instead for 
Did you mean: 

Raspberry PI to I2C LCD

Hi,

 

I have a Raspberry PI 3B which I've managed to get working with LINX on Community Edition 2022 Q3. I'm able to control gpio fine. I'm now trying to see if I can get a 20x2 LCD with I2C adapter board on the back. I know that the PI can see the I2C device via 'i2cdetect -y 1' returning a device on address 0x27. I'm trying to understand how to use the hobbyist I2C library. I've found the following example

 

https://www.feeds.labviewmakerhub.com/forums/viewtopic.php?f=12&t=891

 

The things that I'm unsure of:

 

- Do I need to open a different LINX resource type for the I2C or do I just feed in the output of LINX Open Local?

- The above example included arduino commands being fed into the byte arrays. Is this correct for RPI or do I need to find a different set of commands?

- I've set the I2C channel to 1 as it returned an error saying port 0 was not available.

- Does anyone already have this working and can provide an example?

 

Thanks in advance.

 

Regards,

 

Shane

0 Kudos
Message 1 of 2
(1,223 Views)

Ignore my above question at this stage. I misunderstood something I was reading about the I2C interface on the example I pointed to. I need to try and locate what the actual commands are that I need to send over the communications. Reading up on that at the moment.

 

Thanks.

 

Shane

0 Kudos
Message 2 of 2
(1,203 Views)