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pi@raspberrypi ~ $ sudo su
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# Enable the spi-bcm2708 driver and blacklist the mcp251x driver
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root@raspberrypi:/home/pi# nano /etc/modprobe.d/raspi-blacklist.conf
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# add the spi-config and the new mcp2515 modules in file /etc/modules
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root@raspberrypi:/home/pi# nano /etc/modules
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# the network can0 auto connect.
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root@raspberrypi:/home/pi# nano /etc/network/interfaces
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root@raspberrypi:/home/pi# cat /etc/modules
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# /etc/modules: kernel modules to load at boot time.
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#
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# This file contains the names of kernel modules that should be loaded
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# at boot time, one per line. Lines beginning with "#" are ignored.
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# Parameters can be specified after the module name.
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snd-bcm2835
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# MCP2515 configuration with /INT on GPIO25 and 16MHz clock
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spi-config devices=\
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bus=0:cs=0:modalias=mcp2515:speed=10000000:gpioirq=25:pd=20:pds32-0=16000000:pdu32-4=0x2002:force_release
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#and of course the mcp2515 driver
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mcp2515
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root@raspberrypi:/home/pi# cat /etc/network/interfaces
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auto lo
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iface lo inet loopback
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iface eth0 inet dhcp
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allow-hotplug wlan0
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iface wlan0 inet manual
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wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf
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iface default inet dhcp
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auto can0
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iface can0 inet manual
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pre-up /sbin/ip link set can0 type can bitrate 125000
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up /sbin/ifconfig can0 up
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down /sbin/ifconfig can0 down
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root@raspberrypi:/home/pi# reboot