meta-audio-4a-framework/recipes-multimedia/agl-service-audio-4a/files/4a_wait_bt.sh

   1 #!/bin/bash
   2
   3 ###############################################################
   4 # This is a workaround for SPEC-1762/SPEC-1763
   5 #
   6 # THIS SCRIPT MUST BE REMOVED ONCE THE ABOVE ISSUES ARE SOLVED
   7 #
   8 # Source recipe is:
   9 #
  10 # meta-audio-4a-framework/
  11 #       recipes-multimedia/
  12 #               agl-service-audio-4a/
  13 #                       agl-service-audio-4a_git.bb
  14 #
  15 # Signed-off-by: Stephane Desneux <stephane.desneux@iot.bzh>
  16 ###############################################################
  17
  18 # time from script startup
  19 LIMIT=20
  20 ts0=0
  21 function ts() { echo $(( $(date +%s) - ts0 )); }
  22 ts0=$(ts)
  23 function havetime() { [[ $(ts) -le ${1:-$LIMIT} ]] || return 1; }
  24
  25 function waitloop() {
  26         # ensure bt modules are loaded (delay: 5s)
  27         while havetime 4; do
  28                 [[ -d /sys/module/bluetooth ]] && {
  29                         echo "bluetooth kernel module detected"
  30                         break
  31                 }
  32                 echo "waiting for bluetooth kernel module to be up"
  33                 sleep 0.2
  34         done
  35         havetime 4 || { echo "TIMEOUT REACHED"; return 1; }
  36
  37         # check that we have at least one controller
  38         HCIDEV=
  39         while havetime 8; do
  40                 echo "detecting hci devices..."
  41                 for x in $(ls /sys/class/bluetooth/hci* 2>/dev/null); do
  42                         [[ -z "$HCIDEV" ]] && HCIDEV=$(basename $x)
  43                 done
  44                 [[ -n "$HCIDEV" ]] && {
  45                         echo "found HCI controller: $HCIDEV"
  46                         break
  47                 }
  48                 sleep 0.2
  49         done
  50         havetime 8 || { echo "TIMEOUT REACHED"; return 1; }
  51
  52         # wait for controller to be up and running
  53         while havetime 15; do
  54                 state=$(hciconfig $HCIDEV | grep -A 2 ^hci0 | tail -1)
  55                 [[ $state =~ UP ]] && [[ $state =~ RUNNING ]] && {
  56                         echo "HCI controller $HCIDEV state: $state"
  57                         break
  58                 }
  59                 echo "HCI controller $HCIDEV state: $state ... waiting for UP RUNNING"
  60                 sleep 0.2
  61         done
  62         havetime 15 || { echo "TIMEOUT REACHED"; return 1; }
  63         echo "HCI device up and running after $(ts) seconds"
  64
  65         # wait for bluetooth-service to return something
  66         while havetime; do
  67                 res=$(afb-client-demo -d unix:/run/user/$UID/apis/ws/Bluetooth-Manager power true)
  68                 [[ "$res" =~ \"response\":(.*)}$ ]] && res=${BASH_REMATCH[1]}
  69                 [[ "$res" == '{"power":"on"}' ]] && {
  70                         echo "Bluetooth-Manager/power: $res"
  71                         break
  72                 }
  73                 echo "Bluetooth-Manager/power: not ready yet ($res)"
  74                 sleep 0.2
  75         done
  76         echo "Bluetooth-Manager ready after $(ts) seconds"
  77
  78         echo "4A now starting..."
  79 }
  80
  81 waitloop 2>&1 | sed 's/^/4AWAITBT /' >&2
  82 exec "$@"
  83