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    RS485 tty on Neuron S103

    UniPi Neuron Series
    2
    2
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    • roberts_lando
      roberts_lando last edited by roberts_lando

      Hi I have a modbus RTU device connected to the RS485 but I cannot figure out which tty I should use to read it.

      Any help?

      pi@raspberrypi:~ $ ls /dev -l
      total 0
      crw-r--r-- 1 root root     10, 235 Mar  4 15:54 autofs
      drwxr-xr-x 2 root root         620 Mar  4 15:54 block
      crw------- 1 root root     10, 234 Mar  4 15:54 btrfs-control
      drwxr-xr-x 3 root root          60 Jan  1  1970 bus
      crw------- 1 root root     10,  63 Mar  4 15:54 cachefiles
      drwxr-xr-x 2 root root        2780 Mar  4 15:54 char
      crw------- 1 root root      5,   1 Mar  4 15:54 console
      crw------- 1 root root     10,  62 Mar  4 15:54 cpu_dma_latency
      crw------- 1 root root     10, 203 Mar  4 15:54 cuse
      drwxr-xr-x 7 root root         140 Mar  4 15:54 disk
      crw-rw---- 1 root video    29,   0 Mar  4 15:54 fb0
      lrwxrwxrwx 1 root root          13 Feb 14  2019 fd -> /proc/self/fd
      crw-rw-rw- 1 root root      1,   7 Mar  4 15:54 full
      crw-rw-rw- 1 root root     10, 229 Mar  4 15:54 fuse
      crw-rw---- 1 root gpio    254,   0 Mar  4 15:54 gpiochip0
      crw-rw---- 1 root gpio    254,   1 Mar  4 15:54 gpiochip1
      crw-rw---- 1 root gpio    254,   2 Mar  4 15:54 gpiochip2
      crw-rw---- 1 root gpio    247,   0 Mar  4 15:54 gpiomem
      crw------- 1 root root     10, 183 Mar  4 15:54 hwrng
      crw-rw---- 1 root i2c      89,   1 Mar  4 15:54 i2c-1
      lrwxrwxrwx 1 root root          12 Feb 14  2019 initctl -> /run/initctl
      drwxr-xr-x 2 root root          60 Jan  1  1970 input
      crw-r--r-- 1 root root      1,  11 Mar  4 15:54 kmsg
      lrwxrwxrwx 1 root root          28 Feb 14  2019 log -> /run/systemd/journal/dev-log
      brw-rw---- 1 root disk      7,   0 Mar  4 15:54 loop0
      brw-rw---- 1 root disk      7,   1 Mar  4 15:54 loop1
      brw-rw---- 1 root disk      7,   2 Mar  4 15:54 loop2
      brw-rw---- 1 root disk      7,   3 Mar  4 15:54 loop3
      brw-rw---- 1 root disk      7,   4 Mar  4 15:54 loop4
      brw-rw---- 1 root disk      7,   5 Mar  4 15:54 loop5
      brw-rw---- 1 root disk      7,   6 Mar  4 15:54 loop6
      brw-rw---- 1 root disk      7,   7 Mar  4 15:54 loop7
      crw-rw---- 1 root disk     10, 237 Mar  4 15:54 loop-control
      drwxr-xr-x 2 root root          60 Mar  4 15:54 mapper
      crw-rw---- 1 root video   241,   0 Mar  4 15:54 media0
      crw-r----- 1 root kmem      1,   1 Mar  4 15:54 mem
      crw------- 1 root root     10,  59 Mar  4 15:54 memory_bandwidth
      brw-rw---- 1 root disk    179,   0 Mar  4 15:54 mmcblk0
      brw-rw---- 1 root disk    179,  32 Mar  4 15:54 mmcblk0boot0
      brw-rw---- 1 root disk    179,  64 Mar  4 15:54 mmcblk0boot1
      brw-rw---- 1 root disk    179,   1 Mar  4 15:54 mmcblk0p1
      brw-rw---- 1 root disk    179,   2 Mar  4 15:54 mmcblk0p2
      crw------- 1 root root    246,   0 Mar  4 15:54 mmcblk0rpmb
      drwxrwxrwt 2 root root          40 Jan  1  1970 mqueue
      drwxr-xr-x 2 root root          60 Mar  4 15:54 net
      crw------- 1 root root     10,  61 Mar  4 15:54 network_latency
      crw------- 1 root root     10,  60 Mar  4 15:54 network_throughput
      crw-rw-rw- 1 root root      1,   3 Mar  4 15:54 null
      crw------- 1 root root    108,   0 Mar  4 15:54 ppp
      crw-rw-rw- 1 root tty       5,   2 Mar  4 15:59 ptmx
      drwxr-xr-x 2 root root           0 Feb 14  2019 pts
      brw-rw---- 1 root disk      1,   0 Mar  4 15:54 ram0
      brw-rw---- 1 root disk      1,   1 Mar  4 15:54 ram1
      brw-rw---- 1 root disk      1,  10 Mar  4 15:54 ram10
      brw-rw---- 1 root disk      1,  11 Mar  4 15:54 ram11
      brw-rw---- 1 root disk      1,  12 Mar  4 15:54 ram12
      brw-rw---- 1 root disk      1,  13 Mar  4 15:54 ram13
      brw-rw---- 1 root disk      1,  14 Mar  4 15:54 ram14
      brw-rw---- 1 root disk      1,  15 Mar  4 15:54 ram15
      brw-rw---- 1 root disk      1,   2 Mar  4 15:54 ram2
      brw-rw---- 1 root disk      1,   3 Mar  4 15:54 ram3
      brw-rw---- 1 root disk      1,   4 Mar  4 15:54 ram4
      brw-rw---- 1 root disk      1,   5 Mar  4 15:54 ram5
      brw-rw---- 1 root disk      1,   6 Mar  4 15:54 ram6
      brw-rw---- 1 root disk      1,   7 Mar  4 15:54 ram7
      brw-rw---- 1 root disk      1,   8 Mar  4 15:54 ram8
      brw-rw---- 1 root disk      1,   9 Mar  4 15:54 ram9
      crw-rw-rw- 1 root root      1,   8 Mar  4 15:54 random
      drwxr-xr-x 2 root root          60 Jan  1  1970 raw
      crw-rw-r-- 1 root netdev   10, 242 Mar  4 15:54 rfkill
      lrwxrwxrwx 1 root root           5 Mar  4 15:54 serial0 -> ttyS0
      lrwxrwxrwx 1 root root           7 Mar  4 15:54 serial1 -> ttyAMA0
      drwxrwxrwt 2 root root          40 Feb 14  2019 shm
      drwxr-xr-x 3 root root         180 Mar  4 15:54 snd
      crw-rw---- 1 root spi     153,   0 Mar  4 15:54 spidev0.0
      crw-rw---- 1 root spi     153,   1 Mar  4 15:54 spidev0.1
      lrwxrwxrwx 1 root root          15 Feb 14  2019 stderr -> /proc/self/fd/2
      lrwxrwxrwx 1 root root          15 Feb 14  2019 stdin -> /proc/self/fd/0
      lrwxrwxrwx 1 root root          15 Feb 14  2019 stdout -> /proc/self/fd/1
      crw-rw-rw- 1 root tty       5,   0 Mar  4 15:54 tty
      crw--w---- 1 root tty       4,   0 Mar  4 15:54 tty0
      crw--w---- 1 root tty       4,   1 Mar  4 15:54 tty1
      crw--w---- 1 root tty       4,  10 Mar  4 15:54 tty10
      crw--w---- 1 root tty       4,  11 Mar  4 15:54 tty11
      crw--w---- 1 root tty       4,  12 Mar  4 15:54 tty12
      crw--w---- 1 root tty       4,  13 Mar  4 15:54 tty13
      crw--w---- 1 root tty       4,  14 Mar  4 15:54 tty14
      crw--w---- 1 root tty       4,  15 Mar  4 15:54 tty15
      crw--w---- 1 root tty       4,  16 Mar  4 15:54 tty16
      crw--w---- 1 root tty       4,  17 Mar  4 15:54 tty17
      crw--w---- 1 root tty       4,  18 Mar  4 15:54 tty18
      crw--w---- 1 root tty       4,  19 Mar  4 15:54 tty19
      crw--w---- 1 root tty       4,   2 Mar  4 15:54 tty2
      crw--w---- 1 root tty       4,  20 Mar  4 15:54 tty20
      crw--w---- 1 root tty       4,  21 Mar  4 15:54 tty21
      crw--w---- 1 root tty       4,  22 Mar  4 15:54 tty22
      crw--w---- 1 root tty       4,  23 Mar  4 15:54 tty23
      crw--w---- 1 root tty       4,  24 Mar  4 15:54 tty24
      crw--w---- 1 root tty       4,  25 Mar  4 15:54 tty25
      crw--w---- 1 root tty       4,  26 Mar  4 15:54 tty26
      crw--w---- 1 root tty       4,  27 Mar  4 15:54 tty27
      crw--w---- 1 root tty       4,  28 Mar  4 15:54 tty28
      crw--w---- 1 root tty       4,  29 Mar  4 15:54 tty29
      crw--w---- 1 root tty       4,   3 Mar  4 15:54 tty3
      crw--w---- 1 root tty       4,  30 Mar  4 15:54 tty30
      crw--w---- 1 root tty       4,  31 Mar  4 15:54 tty31
      crw--w---- 1 root tty       4,  32 Mar  4 15:54 tty32
      crw--w---- 1 root tty       4,  33 Mar  4 15:54 tty33
      crw--w---- 1 root tty       4,  34 Mar  4 15:54 tty34
      crw--w---- 1 root tty       4,  35 Mar  4 15:54 tty35
      crw--w---- 1 root tty       4,  36 Mar  4 15:54 tty36
      crw--w---- 1 root tty       4,  37 Mar  4 15:54 tty37
      crw--w---- 1 root tty       4,  38 Mar  4 15:54 tty38
      crw--w---- 1 root tty       4,  39 Mar  4 15:54 tty39
      crw--w---- 1 root tty       4,   4 Mar  4 15:54 tty4
      crw--w---- 1 root tty       4,  40 Mar  4 15:54 tty40
      crw--w---- 1 root tty       4,  41 Mar  4 15:54 tty41
      crw--w---- 1 root tty       4,  42 Mar  4 15:54 tty42
      crw--w---- 1 root tty       4,  43 Mar  4 15:54 tty43
      crw--w---- 1 root tty       4,  44 Mar  4 15:54 tty44
      crw--w---- 1 root tty       4,  45 Mar  4 15:54 tty45
      crw--w---- 1 root tty       4,  46 Mar  4 15:54 tty46
      crw--w---- 1 root tty       4,  47 Mar  4 15:54 tty47
      crw--w---- 1 root tty       4,  48 Mar  4 15:54 tty48
      crw--w---- 1 root tty       4,  49 Mar  4 15:54 tty49
      crw--w---- 1 root tty       4,   5 Mar  4 15:54 tty5
      crw--w---- 1 root tty       4,  50 Mar  4 15:54 tty50
      crw--w---- 1 root tty       4,  51 Mar  4 15:54 tty51
      crw--w---- 1 root tty       4,  52 Mar  4 15:54 tty52
      crw--w---- 1 root tty       4,  53 Mar  4 15:54 tty53
      crw--w---- 1 root tty       4,  54 Mar  4 15:54 tty54
      crw--w---- 1 root tty       4,  55 Mar  4 15:54 tty55
      crw--w---- 1 root tty       4,  56 Mar  4 15:54 tty56
      crw--w---- 1 root tty       4,  57 Mar  4 15:54 tty57
      crw--w---- 1 root tty       4,  58 Mar  4 15:54 tty58
      crw--w---- 1 root tty       4,  59 Mar  4 15:54 tty59
      crw--w---- 1 root tty       4,   6 Mar  4 15:54 tty6
      crw--w---- 1 root tty       4,  60 Mar  4 15:54 tty60
      crw--w---- 1 root tty       4,  61 Mar  4 15:54 tty61
      crw--w---- 1 root tty       4,  62 Mar  4 15:54 tty62
      crw--w---- 1 root tty       4,  63 Mar  4 15:54 tty63
      crw--w---- 1 root tty       4,   7 Mar  4 15:54 tty7
      crw--w---- 1 root tty       4,   8 Mar  4 15:54 tty8
      crw--w---- 1 root tty       4,   9 Mar  4 15:54 tty9
      crw-rw---- 1 root dialout 204,  64 Mar  4 15:54 ttyAMA0
      crw------- 1 root root      5,   3 Mar  4 15:54 ttyprintk
      crw-rw---- 1 root dialout   4,  64 Mar  4 15:57 ttyS0
      crw------- 1 root root     10, 239 Mar  4 15:54 uhid
      crw------- 1 root root     10, 223 Mar  4 15:54 uinput
      crw-rw-rw- 1 root root      1,   9 Mar  4 15:54 urandom
      drwxr-xr-x 3 root root          60 Mar  4 15:54 v4l
      crw-rw---- 1 root video   243,   0 Mar  4 15:54 vchiq
      crw-rw---- 1 root video   248,   0 Mar  4 15:54 vcio
      crw------- 1 root root    249,   0 Mar  4 15:54 vc-mem
      crw-rw---- 1 root tty       7,   0 Mar  4 15:54 vcs
      crw-rw---- 1 root tty       7,   1 Mar  4 15:54 vcs1
      crw-rw---- 1 root tty       7,   2 Mar  4 15:54 vcs2
      crw-rw---- 1 root tty       7,   3 Mar  4 15:54 vcs3
      crw-rw---- 1 root tty       7,   4 Mar  4 15:54 vcs4
      crw-rw---- 1 root tty       7,   5 Mar  4 15:54 vcs5
      crw-rw---- 1 root tty       7,   6 Mar  4 15:54 vcs6
      crw-rw---- 1 root tty       7, 128 Mar  4 15:54 vcsa
      crw-rw---- 1 root tty       7, 129 Mar  4 15:54 vcsa1
      crw-rw---- 1 root tty       7, 130 Mar  4 15:54 vcsa2
      crw-rw---- 1 root tty       7, 131 Mar  4 15:54 vcsa3
      crw-rw---- 1 root tty       7, 132 Mar  4 15:54 vcsa4
      crw-rw---- 1 root tty       7, 133 Mar  4 15:54 vcsa5
      crw-rw---- 1 root tty       7, 134 Mar  4 15:54 vcsa6
      crw-rw---- 1 root video   244,   0 Mar  4 15:54 vcsm
      crw-rw-rw- 1 root root     10,  58 Mar  4 15:54 vcsm-cma
      crw-rw---- 1 root tty       7,  64 Mar  4 15:54 vcsu
      crw-rw---- 1 root tty       7,  65 Mar  4 15:54 vcsu1
      crw-rw---- 1 root tty       7,  66 Mar  4 15:54 vcsu2
      crw-rw---- 1 root tty       7,  67 Mar  4 15:54 vcsu3
      crw-rw---- 1 root tty       7,  68 Mar  4 15:54 vcsu4
      crw-rw---- 1 root tty       7,  69 Mar  4 15:54 vcsu5
      crw-rw---- 1 root tty       7,  70 Mar  4 15:54 vcsu6
      crw------- 1 root root     10, 137 Mar  4 15:54 vhci
      crw-rw---- 1 root video    81,   0 Mar  4 15:54 video10
      crw-rw---- 1 root video    81,   1 Mar  4 15:54 video11
      crw-rw---- 1 root video    81,   2 Mar  4 15:54 video12
      crw------- 1 root root     10, 130 Mar  4 15:54 watchdog
      crw------- 1 root root    251,   0 Mar  4 15:54 watchdog0
      crw-rw-rw- 1 root root      1,   5 Mar  4 15:54 zero
      
      
      Martin Kudláček 1 Reply Last reply Reply Quote 0
      • Martin Kudláček
        Martin Kudláček @roberts_lando last edited by

        Hello @roberts_lando,
        here is a complete list: https://kb.unipi.technology/en:hw:01-axon:portmap

        Best regards,
        Martin

        1 Reply Last reply Reply Quote 0
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