Hi, Using "Debian 9.3 2018-01-28 4GB SD IoT" on a Seeed Studio BBGW, how do I enable SPI0 on the P9 expansion header? Specifically, having trouble changing modes of P9_17 and P9_22.
root@beaglebone:~/beaglebone-universal-io# ./config-pin P9_17 spi [ 9965.384388] bone-pinmux-helper ocp:P9_17_pinmux: Failed to find state spi bash: line 0: echo: write error: No such device Cannot write pinmux file: /sys/devices/platform/ocp/ocp:P9_17_pinmux/state root@beaglebone:~/beaglebone-universal-io# ./config-pin P9_18 spi root@beaglebone:~/beaglebone-universal-io# ./config-pin P9_21 spi root@beaglebone:~/beaglebone-universal-io# ./config-pin P9_22 spi [ 9979.783283] bone-pinmux-helper ocp:P9_22_pinmux: Failed to find state spi bash: line 0: echo: write error: No such device Cannot write pinmux file: /sys/devices/platform/ocp/ocp:P9_22_pinmux/state root@beaglebone:~/beaglebone-universal-io# ./config-pin -q P9_17 P9_17 Mode: default Direction: in Value: 0 root@beaglebone:~/beaglebone-universal-io# ./config-pin -q P9_18 P9_18 Mode: spi root@beaglebone:~/beaglebone-universal-io# ./config-pin -q P9_21 P9_21 Mode: spi root@beaglebone:~/beaglebone-universal-io# ./config-pin -q P9_22 P9_22 Mode: default Direction: in Value: 0 Thanks. -- 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/d06feda0-0e43-49f1-8887-365c4f9c2b8a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
