AndBondStyle · May 2, 2025 21:44 · Apr 12, 2023 · Apr 12, 2023 · Apr 12, 2023 · Apr 12, 2023
diff --git a/bluetooth-reconnect b/bluetooth-reconnect
@@ -9,7 +9,7 @@ targets=(
 )
 
 function try_target() {
-  if $2
+  if eval $2
   then
     echo "Target $1 (check: $2) -> check true, trying to connect";
     bluetoothctl connect "$1";

diff --git a/bluetooth-reconnect b/bluetooth-reconnect
@@ -5,7 +5,7 @@ delay=10
 # Pairs of [bluetooth MAC, test expression]
 targets=(
   "98:B6:E9:47:F0:4F" "test ! -e /dev/input/js0"
-  "98:B6:E9:72:6C:31" "test -z \"$(bluetoothctl info 98:B6:E9:72:6C:31 | grep 'Connected: yes')\""
+  "98:B6:E9:72:6C:31" "test -z \"\$(bluetoothctl info 98:B6:E9:72:6C:31 | grep 'Connected: yes')\""
 )
 
 function try_target() {

diff --git a/readme.md b/readme.md
@@ -13,7 +13,7 @@ git clone https://gist.github.com/bc178789a441ce73b51e1e0637393aac.git bluetooth
 sudo chmod +x bluetooth-reconnect
 # Edit `bluetooth-reconnect` file according to your needs. Try if it works with ./bluetooth-reconnect
 sudo cp bluetooth-reconnect /usr/bin
-sudo cp bluetooth-reconnect/bluetooth-reconnect.service /etc/systemd/system
+sudo cp bluetooth-reconnect.service /etc/systemd/system
 sudo systemctl enable bluetooth-reconnect
 sudo systemctl start bluetooth-reconnect
 # Check if it's alive

diff --git a/bluetooth-reconnect b/bluetooth-reconnect
@@ -5,7 +5,7 @@ delay=10
 # Pairs of [bluetooth MAC, test expression]
 targets=(
   "98:B6:E9:47:F0:4F" "test ! -e /dev/input/js0"
-  "98:B6:E9:72:6C:31" "test ! -e /dev/whatever"
+  "98:B6:E9:72:6C:31" "test -z \"$(bluetoothctl info 98:B6:E9:72:6C:31 | grep 'Connected: yes')\""
 )
 
 function try_target() {

diff --git a/readme.md b/readme.md
@@ -2,7 +2,7 @@
 
 Inspired by [bluetooth-autoconnect](https://github.com/jrouleau/bluetooth-autoconnect), but much simplier and actually works. Based on systemd service (daemon) which does the following, repeatedly:
 
-1. Check activation condition. In my case, just check if `/dev/something` does not exist.
+1. Run check command (e.g. check if device exists). If it returns zero, continue.
 2. Try to run `bluetoothctl connect <MAC>`. No checks if bluetooth is on, etc. Dead simple.
 3. Sleep for `delay` seconds (configurable).
 

diff --git a/bluetooth-reconnect b/bluetooth-reconnect
@@ -2,7 +2,7 @@
 
 # Miminum delay between iterations, in seconds
 delay=10
-# Odd index: bluetooth MAC, even index: test expression
+# Pairs of [bluetooth MAC, test expression]
 targets=(
   "98:B6:E9:47:F0:4F" "test ! -e /dev/input/js0"
   "98:B6:E9:72:6C:31" "test ! -e /dev/whatever"

diff --git a/bluetooth-reconnect b/bluetooth-reconnect
@@ -33,20 +33,3 @@ do
   sleep $loop_delay
   last_time=$(date +%s)
 done
-
-function try_target() {
-  if $2
-  then
-    echo "Target $1 (check: $2) -> check true, trying to connect...";
-    bluetoothctl connect "$1";
-  else
-    echo "Target $1 (check: $2) -> check false, skipping"
-  fi
-}
-
-# seq args: <start> <step> <end>
-for i in $(seq 1 2 ${#targets[@]});
-  do try_target "${targets[i-1]}" "${targets[i]}"
-done
-
-echo "All targets processed"
diff --git a/bluetooth-reconnect b/bluetooth-reconnect
@@ -4,8 +4,8 @@
 delay=10
 # Odd index: bluetooth MAC, even index: test expression
 targets=(
-  "98:B6:E9:47:F0:4F" "test ! -f /dev/input/js0"
-  "98:B6:E9:72:6C:31" "test ! -f /dev/whatever"
+  "98:B6:E9:47:F0:4F" "test ! -e /dev/input/js0"
+  "98:B6:E9:72:6C:31" "test ! -e /dev/whatever"
 )
 
 function try_target() {

diff --git a/readme.md b/readme.md
@@ -1,6 +1,6 @@
 # bluetooth-reconnect
 
-Inspired by [bluetooth-autoconnect]([url](https://github.com/jrouleau/bluetooth-autoconnect)), but much simplier and actually works. Based on systemd service (daemon) which does the following, repeatedly:
+Inspired by [bluetooth-autoconnect](https://github.com/jrouleau/bluetooth-autoconnect), but much simplier and actually works. Based on systemd service (daemon) which does the following, repeatedly:
 
 1. Check activation condition. In my case, just check if `/dev/something` does not exist.
 2. Try to run `bluetoothctl connect <MAC>`. No checks if bluetooth is on, etc. Dead simple.

diff --git a/readme.md b/readme.md
@@ -9,7 +9,15 @@ Inspired by [bluetooth-autoconnect]([url](https://github.com/jrouleau/bluetooth-
 ## How to install
 
 ```
-// TODO
+git clone https://gist.github.com/bc178789a441ce73b51e1e0637393aac.git bluetooth-reconnect && cd bluetooth-reconnect
+sudo chmod +x bluetooth-reconnect
+# Edit `bluetooth-reconnect` file according to your needs. Try if it works with ./bluetooth-reconnect
+sudo cp bluetooth-reconnect /usr/bin
+sudo cp bluetooth-reconnect/bluetooth-reconnect.service /etc/systemd/system
+sudo systemctl enable bluetooth-reconnect
+sudo systemctl start bluetooth-reconnect
+# Check if it's alive
+sudo systemctl status bluetooth-reconnect
 ```
 
 ## References

diff --git a/bluetooth-reconnect b/bluetooth-reconnect
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+# Miminum delay between iterations, in seconds
+delay=10
+# Odd index: bluetooth MAC, even index: test expression
+targets=(
+  "98:B6:E9:47:F0:4F" "test ! -f /dev/input/js0"
+  "98:B6:E9:72:6C:31" "test ! -f /dev/whatever"
+)
+
+function try_target() {
+  if $2
+  then
+    echo "Target $1 (check: $2) -> check true, trying to connect";
+    bluetoothctl connect "$1";
+  else
+    echo "Target $1 (check: $2) -> check false, skipping"
+  fi
+}
+
+last_time=$(date +%s)
+while true
+do
+  # seq args: <start> <step> <end>
+  for i in $(seq 1 2 ${#targets[@]});
+    do try_target "${targets[i-1]}" "${targets[i]}"
+  done
+
+  curr_time=$(date +%s)
+  elapsed=$((curr_time - last_time))
+  loop_delay=$((elapsed>delay ? 0 : (delay-elapsed)))
+  echo "Loop finished, sleeping for $loop_delay sec"
+  sleep $loop_delay
+  last_time=$(date +%s)
+done
+
+function try_target() {
+  if $2
+  then
+    echo "Target $1 (check: $2) -> check true, trying to connect...";
+    bluetoothctl connect "$1";
+  else
+    echo "Target $1 (check: $2) -> check false, skipping"
+  fi
+}
+
+# seq args: <start> <step> <end>
+for i in $(seq 1 2 ${#targets[@]});
+  do try_target "${targets[i-1]}" "${targets[i]}"
+done
+
+echo "All targets processed"
diff --git a/bluetooth-reconnect.service b/bluetooth-reconnect.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=Bluetooth reconnect service
+Before=bluetooth.service
+
+[Service]
+ExecStart=/usr/bin/bluetooth-reconnect
+
+[Install]
+WantedBy=bluetooth.service
diff --git a/readme.md b/readme.md
@@ -0,0 +1,18 @@
+# bluetooth-reconnect
+
+Inspired by [bluetooth-autoconnect]([url](https://github.com/jrouleau/bluetooth-autoconnect)), but much simplier and actually works. Based on systemd service (daemon) which does the following, repeatedly:
+
+1. Check activation condition. In my case, just check if `/dev/something` does not exist.
+2. Try to run `bluetoothctl connect <MAC>`. No checks if bluetooth is on, etc. Dead simple.
+3. Sleep for `delay` seconds (configurable).
+
+## How to install
+
+```
+// TODO
+```
+
+## References
+
+- How `test` command works: https://www.computerhope.com/unix/test.htm
+- How to loop with equal invervals: https://unix.stackexchange.com/a/214660