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Old 02-09-2015, 12:55 AM   #1
mayap
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Registered: Feb 2015
Posts: 1

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i2c driver with io expander pcf8574a


hi there,

Iam trying to implement i2c communication with io expander pcf8574a ,i have done like this

1. installed i2c-tools
2. modprobe i2c-dev
3.i2cdetect [bus number]

but nothing is found while probing, my expected address is 0x3f

please help !!
 
  


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