Hello All,
I am trying to get CAN working on a Beaglebone Black running the following kernel:
Linux beaglebone 4.4.54-ti-r93 #1 SMP Fri Mar 17 13:08:22 UTC 2017 armv7l GNU/Linux
I am attempting to use the CAN1 interface on the BeageBone as I have done previously on other distriubutions, however when I follow the instructions posted here: https://github.com/RobertCNelson/bb.org-overlays I get an error.
For example, if I try the following:
root@beaglebone:/home/debian# echo ‘BB-UART1’ > /sys/devices/platform/bone_capemgr/slots
bash: echo: write error: File exists
Dmesg output:
[ 40.829790] bone-pinmux-helper: probe of ocp:P9_31_pinmux failed with error -22
[ 40.859306] gpio-of-helper ocp:cape-universal: Allocated GPIO id=0
[ 40.859510] gpio-of-helper ocp:cape-universal: Allocated GPIO id=1
[ 40.859679] gpio-of-helper ocp:cape-universal: Allocated GPIO id=2
[ 40.859851] gpio-of-helper ocp:cape-universal: Allocated GPIO id=3
[ 40.860015] gpio-of-helper ocp:cape-universal: Allocated GPIO id=4
[ 40.860176] gpio-of-helper ocp:cape-universal: Allocated GPIO id=5
[ 40.860351] gpio-of-helper ocp:cape-universal: Allocated GPIO id=6
[ 40.860513] gpio-of-helper ocp:cape-universal: Allocated GPIO id=7
[ 40.860683] gpio-of-helper ocp:cape-universal: Allocated GPIO id=8
[ 40.860852] gpio-of-helper ocp:cape-universal: Allocated GPIO id=9
[ 40.861016] gpio-of-helper ocp:cape-universal: Allocated GPIO id=10
[ 40.861194] gpio-of-helper ocp:cape-universal: Allocated GPIO id=11
[ 40.861365] gpio-of-helper ocp:cape-universal: Allocated GPIO id=12
[ 40.861534] gpio-of-helper ocp:cape-universal: Allocated GPIO id=13
[ 40.861705] gpio-of-helper ocp:cape-universal: Allocated GPIO id=14
[ 40.861874] gpio-of-helper ocp:cape-universal: Allocated GPIO id=15
[ 40.875457] gpio-of-helper ocp:cape-universal: Allocated GPIO id=16
[ 40.875733] gpio-of-helper ocp:cape-universal: Allocated GPIO id=17
[ 40.875912] gpio-of-helper ocp:cape-universal: Allocated GPIO id=18
[ 40.876095] gpio-of-helper ocp:cape-universal: Allocated GPIO id=19
[ 40.876259] gpio-of-helper ocp:cape-universal: Allocated GPIO id=20
[ 40.876418] gpio-of-helper ocp:cape-universal: Allocated GPIO id=21
[ 40.876580] gpio-of-helper ocp:cape-universal: Allocated GPIO id=22
[ 40.876735] gpio-of-helper ocp:cape-universal: Allocated GPIO id=23
[ 40.876889] gpio-of-helper ocp:cape-universal: Allocated GPIO id=24
[ 40.881135] gpio-of-helper ocp:cape-universal: Allocated GPIO id=25
[ 40.881355] gpio-of-helper ocp:cape-universal: Allocated GPIO id=26
[ 40.881558] gpio-of-helper ocp:cape-universal: Allocated GPIO id=27
[ 40.881716] gpio-of-helper ocp:cape-universal: Allocated GPIO id=28
[ 40.881877] gpio-of-helper ocp:cape-universal: Allocated GPIO id=29
[ 40.886404] gpio-of-helper ocp:cape-universal: Allocated GPIO id=30
[ 40.886687] gpio-of-helper ocp:cape-universal: Allocated GPIO id=31
[ 40.886865] gpio-of-helper ocp:cape-universal: Allocated GPIO id=32
[ 40.887041] gpio-of-helper ocp:cape-universal: Allocated GPIO id=33
[ 40.887201] gpio-of-helper ocp:cape-universal: Allocated GPIO id=34
[ 40.887366] gpio-of-helper ocp:cape-universal: Allocated GPIO id=35
[ 40.887526] gpio-of-helper ocp:cape-universal: Allocated GPIO id=36
[ 40.887538] gpio-of-helper ocp:cape-universal: ready
[ 40.898497] 48022000.serial: ttyS1 at MMIO 0x48022000 (irq = 199, base_baud = 3000000) is a 8250
[ 40.908411] 48024000.serial: ttyS2 at MMIO 0x48024000 (irq = 200, base_baud = 3000000) is a 8250
[ 40.918518] 481a8000.serial: ttyS4 at MMIO 0x481a8000 (irq = 201, base_baud = 3000000) is a 8250
[ 40.930524] eqep 48300180.eqep: ver. 1.0
[ 40.940161] eqep 48302180.eqep: ver. 1.0
[ 40.957039] eqep 48304180.eqep: ver. 1.0
[ 40.975138] omap_i2c 4802a000.i2c: bus 1 rev0.11 at 100 kHz
[ 41.016139] bone_capemgr bone_capemgr: slot #4: dtbo ‘cape-universaln-00A0.dtbo’ loaded; overlay id #0
[ 41.020746] asoc-simple-card sound: i2s-hifi <-> 48038000.mcasp mapping ok
[ 42.912836] CAN device driver interface
[ 43.056608] c_can_platform 481cc000.can: c_can_platform device registered (regs=fa1cc000, irq=210)
[ 43.087789] c_can_platform 481d0000.can: c_can_platform device registered (regs=fa1d0000, irq=211)
[ 194.362266] bone_capemgr bone_capemgr: part_number ‘BB-UART1’, version ‘N/A’
[ 194.362348] bone_capemgr bone_capemgr: slot #5: override
[ 194.362391] bone_capemgr bone_capemgr: Using override eeprom data at slot 5
[ 194.362439] bone_capemgr bone_capemgr: slot #5: ‘Override Board Name,00A0,Override Manuf,BB-UART1’
[ 194.375726] bone_capemgr bone_capemgr: slot #5: BB-UART1 conflict P9.24 (#4:cape-universaln)
[ 194.384469] bone_capemgr bone_capemgr: slot #5: Failed verification
I have no idea how to move forward and have been stuck here for a few days, does anyone have any suggestions?