I2c on raspberry pi 3

did anyone manage to install i2c library on rpi3? I tried this
# opkg update
# opkg install kmod-i2c-gpio-custom kmod-i2c-core
and I got error said it failed to install

thanks for any reply

Post the complete error message.

Collected error:

opkg_download_pkg : package kmod-i2c-gpio-custon is not available from any configured src
opkg_install_pkg : failed to download kmod-i2c-gpio-custom. perhaps you need to run 'opkg update'?
opkg_intsll_cmd : cannot install package kmod-i2c-gpio-custom

brcmfmac: bfcmf_cfg80211_dump_station: CRCMF_C_GET_ASSOCLIST unsupported, err=-512

I already did run 'opkg update'

thanks for your reply:)