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General Category => General Discussion => Topic started by: Joogie on June 07, 2014, 11:22:00 AM

Title: Piface
Post by: Joogie on June 07, 2014, 11:22:00 AM

has anyone managed to control a piface interface board?

I followed the instructions to install example MCP23017 http://www.homegenie.it/forum/index.php?topic=145.msg691#msg691 (http://www.homegenie.it/forum/index.php?topic=145.msg691#msg691)

but all I get is a NACK error:-

Runtime.Error = "CR: BCM2835_I2C_REASON_ERROR_NACK"

Any advice gratefully received.

Joe

Title: Re: Piface
Post by: msdny on June 15, 2014, 03:39:06 AM

Can you detect the piface from the rpi command line?

$ i2cdetect -y 0

If not, maybe you need to follow the directions here?

http://www.farnell.com/datasheets/1686131.pdf (http://www.farnell.com/datasheets/1686131.pdf)