On Fri, Dec 29, 2017 at 2:55 PM, <[email protected]> wrote: > I'm familiar with the other M2 versions but I'm trying to get my head > wrapped around the beagle version. It appears to enable can we use > config_pin and that connects the can transceiver of the M2 to the linux > kernel on the beagle, correct? > > If so the next thing that would be easy to test is to connect the SWCAN. > As it looks like that just flows into the MCP2515 which should just show up > as a CAN interface as well. Looking at the current SWCAN library > <https://github.com/macchina/Single-Wire-CAN-mcp2515/blob/master/src/MCP2515_sw_can.cpp> > It > looks like we setup some specific M2 related settings. How would we do > this as well as pass this information to the beagle to use as a can > interface? > > My ultimate goal is to connect all the interfaces to the linux side but > I'm trying to get up to speed on how the beagle works. I'm familiar with > linux, coding and the M2 but how these all work together still hasn't > clicked. I read the source for config-pin > <https://github.com/cdsteinkuehler/beaglebone-universal-io/blob/master/config-pin> > but that didn't really clear anything up. If I want to write the glue to > make this cape 'just work' what's the worflow/process I should be going > through? > > Craig >
So config-pin is just a user-space utility that allows us to easily switch the peripheral/pin mapping. On the am335x, each pins usually has 8 different modes that can be setup. (gpio, can, usart, spi, timer, pru, etc) By default the can interface is enabled, but it's not muxed to those pins. So when you bootup, you will see the can interface listed under "ifconfig", but till you actually configure the pins' for can (thru config-pin), the am335x can ip will not see any traffic.. Regards, -- Robert Nelson https://rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CAOCHtYhJzw62QbqpNrrzonVaZkS7D%2BcwwL1KNqFbxSqWjV%3D7VQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
