Within the past week I tried to open DCAN. Now it work. I can send and receive package through DCAN.
1. I follow cross-compiler kernel this link https://www.digikey.com/eewiki/display/linuxonarm/BeagleBoard-X15 2. After step download kernel I edit file *am57xx-beagle-x15-common.dtsi* by reference from *am57xx-idk-common.dtsi* &dra7_pmx_core { dcan1_pins_default: dcan1_pins_default { pinctrl-single,pins = < DRA7XX_CORE_IOPAD(0x37d0, PIN_OUTPUT_PULLUP | MUX_MODE0) /* dcan1_tx */ DRA7XX_CORE_IOPAD(0x37d4, PIN_INPUT_PULLUP | MUX_MODE0) /* dcan1_rx */ >; }; dcan1_pins_sleep: dcan1_pins_sleep { pinctrl-single,pins = < DRA7XX_CORE_IOPAD(0x37d0, MUX_MODE15 | PULL_UP) /* dcan1_tx.off */ DRA7XX_CORE_IOPAD(0x37d4, MUX_MODE15 | PULL_UP) /* dcan1_rx.off */ >; }; }; &dcan1 { status = "okay"; pinctrl-names = "default", "sleep", "active"; pinctrl-0 = <&dcan1_pins_sleep>; pinctrl-1 = <&dcan1_pins_sleep>; pinctrl-2 = <&dcan1_pins_default>; }; 3. After login debian I open dcan with command : *ip link set can0 type can; ifconfig can0 up;* you can see my forum talked with TI engineer https://e2e.ti.com/support/processors/f/791/t/732131?tisearch=e2e-quicksearch&keymatch=beagleboard#pi320627=1 Thank เมื่อ วันพุธที่ 24 ตุลาคม ค.ศ. 2018 16 นาฬิกา 43 นาที 09 วินาที UTC+7, ezio H เขียนว่า: > > > Hello ,Thanks for reply. > en...Good news is that DCAN can work in loopback mode ! > Bad news is still that DCAN can't use in nomal mode .I keep consulting > the TI engineer. > referring to > https://e2e.ti.com/support/processors/f/791/p/739907/2731843#2731843 > <https://www.google.com/url?q=https%3A%2F%2Fe2e.ti.com%2Fsupport%2Fprocessors%2Ff%2F791%2Fp%2F739907%2F2731843%232731843&sa=D&sntz=1&usg=AFQjCNGpwDxTRoks5bwcRhFLswkEFJyimA> > > 在 2018年10月11日星期四 UTC+8下午7:53:59，[email protected]写道： >> >> Hi, >> Now can you use dcan on bb-x15? >> If yes, please advise me how do open it >> I see this link >> https://e2e.ti.com/support/processors/f/791/p/715990/2645332#pi239031349=1 >> but it cannot use >> >> เมื่อ วันอังคารที่ 14 สิงหาคม ค.ศ. 2018 14 นาฬิกา 27 นาที 31 วินาที >> UTC+7, ezio H เขียนว่า: >>> >>> Link on ti e2e: >>> https://e2e.ti.com/support/arm/sitara_arm/f/791/t/710355. >>> bb_x15 's DCAM1 don't work on either >>> *ubuntu-16.04.3-minimal-armhf-2017-10-10 >>> * or TI's Arogo >>> On Arogo,I use: >>> >>> root@am57xx-evm:~# canconfig can0 bitrate 50000 ctrlmode triple-samplin >>> [ 757.361582] omap_hwmod: dcan1: _wait_target_disable failed >>> can0 bitrate: 50000, sample-point: 0.875 >>> [ 757.376837] omap_hwmod: dcan1: _wait_target_disable failed >>> can0 ctrlmode: loopback[OFF], listen-only[OFF], >>> tripple-sampling[ON],one-shot[OFF], berr-reporting[OFF] >>> root@am57xx-evm:~# ifconfig can0 up >>> >>> >>> And everything about CAN looks good >>> >>> root@am57xx-evm:~# lsmod | grep can >>> can_raw 6589 2 >>> >>> can 29904 1 can_raw >>> >>> c_can_platform 6638 0 >>> c_can 9718 1 c_can_platform >>> can_dev 12397 1 c_can >>> >>> root@am57xx-evm:~# cat /proc/device-tree/ocp/can\@481cc000/status >>> okay >>> >>> >>> >>> >>> Except: omap_hwmod: dcan1: _wait_target_disable failed. >>> What should I do with this error messagge >>> >>> -- 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/7a917be6-0b35-4fc4-a593-2a1e23cca740%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
