On 29/06/2017 21:44, Sean Young wrote: > On Thu, Jun 29, 2017 at 09:12:48PM +0200, Mason wrote: > >> On 29/06/2017 19:50, Sean Young wrote: >> >>> On Thu, Jun 29, 2017 at 06:25:55PM +0200, Mason wrote: >>> >>>> $ ir-keytable -v -t >>>> Found device /sys/class/rc/rc0/ >>>> Input sysfs node is /sys/class/rc/rc0/input0/ >>>> Event sysfs node is /sys/class/rc/rc0/input0/event0/ >>>> Parsing uevent /sys/class/rc/rc0/input0/event0/uevent >>>> /sys/class/rc/rc0/input0/event0/uevent uevent MAJOR=13 >>>> /sys/class/rc/rc0/input0/event0/uevent uevent MINOR=64 >>>> /sys/class/rc/rc0/input0/event0/uevent uevent DEVNAME=input/event0 >>>> Parsing uevent /sys/class/rc/rc0/uevent >>>> /sys/class/rc/rc0/uevent uevent NAME=rc-empty >>>> input device is /dev/input/event0 >>>> /sys/class/rc/rc0/protocols protocol rc-5 (disabled) >>>> /sys/class/rc/rc0/protocols protocol nec (disabled) >>>> /sys/class/rc/rc0/protocols protocol rc-6 (disabled) >> >> I had overlooked this. Is it expected for these protocols >> to be marked as "disabled"? > > Ah, good point, I forgot about that. :/ > > "ir-keytable -p all -t -v" should enable all protocols and test. After hours of thrashing around, I finally figured out that the IRQ was misconfigured... Doh! Here's the output from pressing '1' for one second on the RC: # cat /dev/input/event0 | hexdump -vC 00000000 04 04 00 00 7a 08 07 00 04 00 04 00 41 cb 04 00 |....z.......A...| 00000010 04 04 00 00 7a 08 07 00 00 00 00 00 00 00 00 00 |....z...........| 00000020 04 04 00 00 f4 da 07 00 04 00 04 00 00 00 00 00 |................| 00000030 04 04 00 00 f4 da 07 00 00 00 00 00 00 00 00 00 |................| 00000040 04 04 00 00 f1 7f 09 00 04 00 04 00 00 00 00 00 |................| 00000050 04 04 00 00 f1 7f 09 00 00 00 00 00 00 00 00 00 |................| 00000060 04 04 00 00 f2 24 0b 00 04 00 04 00 00 00 00 00 |.....$..........| 00000070 04 04 00 00 f2 24 0b 00 00 00 00 00 00 00 00 00 |.....$..........| 00000080 04 04 00 00 f3 c9 0c 00 04 00 04 00 00 00 00 00 |................| 00000090 04 04 00 00 f3 c9 0c 00 00 00 00 00 00 00 00 00 |................| 000000a0 04 04 00 00 f6 6e 0e 00 04 00 04 00 00 00 00 00 |.....n..........| 000000b0 04 04 00 00 f6 6e 0e 00 00 00 00 00 00 00 00 00 |.....n..........| 000000c0 05 04 00 00 ba d1 00 00 04 00 04 00 00 00 00 00 |................| 000000d0 05 04 00 00 ba d1 00 00 00 00 00 00 00 00 00 00 |................| 000000e0 05 04 00 00 bb 76 02 00 04 00 04 00 00 00 00 00 |.....v..........| 000000f0 05 04 00 00 bb 76 02 00 00 00 00 00 00 00 00 00 |.....v..........| 00000100 05 04 00 00 bd 1b 04 00 04 00 04 00 00 00 00 00 |................| 00000110 05 04 00 00 bd 1b 04 00 00 00 00 00 00 00 00 00 |................| 00000120 05 04 00 00 be c0 05 00 04 00 04 00 00 00 00 00 |................| 00000130 05 04 00 00 be c0 05 00 00 00 00 00 00 00 00 00 |................| 00000140 05 04 00 00 c2 65 07 00 04 00 04 00 00 00 00 00 |.....e..........| 00000150 05 04 00 00 c2 65 07 00 00 00 00 00 00 00 00 00 |.....e..........| I'm not sure what these mean. There seems to be some kind of timestamp? And something else? How do I tell which protocol this RC is using? Repeating the test (pressing '1' for one second) with ir-keytable: # ir-keytable -p all -t -v Found device /sys/class/rc/rc0/ Input sysfs node is /sys/class/rc/rc0/input0/ Event sysfs node is /sys/class/rc/rc0/input0/event0/ Parsing uevent /sys/class/rc/rc0/input0/event0/uevent /sys/class/rc/rc0/input0/event0/uevent uevent MAJOR=13 /sys/class/rc/rc0/input0/event0/uevent uevent MINOR=64 /sys/class/rc/rc0/input0/event0/uevent uevent DEVNAME=input/event0 Parsing uevent /sys/class/rc/rc0/uevent /sys/class/rc/rc0/uevent uevent NAME=rc-empty input device is /dev/input/event0 /sys/class/rc/rc0/protocols protocol rc-5 (disabled) /sys/class/rc/rc0/protocols protocol nec (disabled) /sys/class/rc/rc0/protocols protocol rc-6 (disabled) Opening /dev/input/event0 Input Protocol version: 0x00010001 /sys/class/rc/rc0//protocols: Invalid argument Couldn't change the IR protocols Testing events. Please, press CTRL-C to abort. 1296.124872: event type EV_MSC(0x04): scancode = 0x4cb41 1296.124872: event type EV_SYN(0x00). 1296.178753: event type EV_MSC(0x04): scancode = 0x00 1296.178753: event type EV_SYN(0x00). 1296.286526: event type EV_MSC(0x04): scancode = 0x00 1296.286526: event type EV_SYN(0x00). 1296.394303: event type EV_MSC(0x04): scancode = 0x00 1296.394303: event type EV_SYN(0x00). 1296.502081: event type EV_MSC(0x04): scancode = 0x00 1296.502081: event type EV_SYN(0x00). 1296.609857: event type EV_MSC(0x04): scancode = 0x00 1296.609857: event type EV_SYN(0x00). 1296.717635: event type EV_MSC(0x04): scancode = 0x00 1296.717635: event type EV_SYN(0x00). 1296.825412: event type EV_MSC(0x04): scancode = 0x00 1296.825412: event type EV_SYN(0x00). 1296.933189: event type EV_MSC(0x04): scancode = 0x00 1296.933189: event type EV_SYN(0x00). 1297.040967: event type EV_MSC(0x04): scancode = 0x00 1297.040967: event type EV_SYN(0x00). 1297.148745: event type EV_MSC(0x04): scancode = 0x00 1297.148745: event type EV_SYN(0x00). 1297.256522: event type EV_MSC(0x04): scancode = 0x00 1297.256522: event type EV_SYN(0x00). It looks like scancode 0x00 means "REPEAT" ? And 0x4cb41 would be '1' then? If I compile the legacy driver (which is much more cryptic) it outputs 04 cb 41 be So 0x4cb41 in common - plus a trailing 0xbe (what is that? Some kind of checksum perhaps?) (For '2', I get 04 cb 03 fc) I'm a bit confused between "protocols", "decoders", "scancodes", "keys", "keymaps". Is there some high-level doc somewhere? I found this, but it seems to dive straight into API details: https://www.linuxtv.org/downloads/v4l-dvb-apis-new/uapi/rc/remote_controllers.html I'll start a separate thread to discuss the available IR hardware on the board I'm using. Regards.
