From 1d2d4cb343e6d8b290e801a7dc776f9fb0aa8999 Mon Sep 17 00:00:00 2001
From: John Klug <john.klug@multitech.com>
Date: Fri, 3 Sep 2021 04:59:39 -0500
Subject: radio reset monitor feature and MTRV1-0.4 hardware

---
 test/resettest.sh | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100755 test/resettest.sh

(limited to 'test')

diff --git a/test/resettest.sh b/test/resettest.sh
new file mode 100755
index 0000000..b0cb9e1
--- /dev/null
+++ b/test/resettest.sh
@@ -0,0 +1,46 @@
+#!/bin/bash
+# Register for with radio-reset-monitor to
+# get a signal when radio-reset occurs.
+# Child process exists so the parent
+# does not need to worry about resets
+# starting before it can get through
+# checks, and possibly sleeping forever.
+# pgrep was needed to kill the sleep.
+# wait is called to wait for the SIGUSR1 signal.
+# The child never terminates.
+# The hope is that the parent will fall into wait
+# before the child registers for the radio-reset.
+# checking for do_wait is risky if the kernel ever
+# changes.  The child will exit if the reset is not
+# in process.
+# 
+
+USR1=10
+TERM=15
+function sleep_reset
+{
+    # Wait for parent to enter wait.
+    trap "kill $!;kill $BASHPID" $TERM
+    while [[ $(ps -h -o wchan -p $PPID) != do_wait ]] ; do usleep 100 ; done
+    echo Register parent for SIGUSR1
+    echo "$$" "$USR1" >/sys/devices/platform/mts-io/radio-reset-monitor
+    discovered=$(cat /sys/devices/platform/mts-io/radio-udev-discovery)
+    if ((discovered == 1)) ; then
+       # reset is not in progress.
+       exit 0
+    fi
+    sleep 4294967295  # Hopefully forever
+    exit 0
+}
+
+date
+trap ":" $USR1
+in_reset=$(cat /sys/devices/platform/mts-io/radio-udev-discovery)
+if ((in_reset == 0)) ; then
+    sleep_reset &
+    wait $!
+    # pgrep is needed to find the sleep process
+    pgrep -P $! | xargs kill
+fi
+echo Radio Reset is done.
+date
-- 
cgit v1.2.3