Initial Commit

1 files changed, 62 insertions, 0 deletions

diff --git a/reset_lgw.sh b/reset_lgw.sh
new file mode 100755
index 0000000..77de63e
--- /dev/null
+++ b/reset_lgw.sh
@@ -0,0 +1,62 @@
+#!/bin/sh
+
+# This script is intended to be used on IoT Starter Kit platform, it performs
+# the following actions:
+#       - export/unpexort GPIO7 used to reset the SX1301 chip
+#
+# Usage examples:
+#       ./reset_lgw.sh stop
+#       ./reset_lgw.sh start
+
+# The reset pin of SX1301 is wired with RPi GPIO7
+# If used on another platform, the GPIO number can be given as parameter.
+if [ -z "$2" ]; then 
+    IOT_SK_SX1301_RESET_PIN=7
+else
+    IOT_SK_SX1301_RESET_PIN=$2
+fi
+
+echo "Accessing concentrator reset pin through GPIO$IOT_SK_SX1301_RESET_PIN..."
+
+WAIT_GPIO() {
+    sleep 0.1
+}
+
+iot_sk_init() {
+    # setup GPIO 7
+    echo "$IOT_SK_SX1301_RESET_PIN" > /sys/class/gpio/export; WAIT_GPIO
+
+    # set GPIO 7 as output
+    echo "out" > /sys/class/gpio/gpio$IOT_SK_SX1301_RESET_PIN/direction; WAIT_GPIO
+
+    # write output for SX1301 reset
+    echo "1" > /sys/class/gpio/gpio$IOT_SK_SX1301_RESET_PIN/value; WAIT_GPIO
+    echo "0" > /sys/class/gpio/gpio$IOT_SK_SX1301_RESET_PIN/value; WAIT_GPIO
+
+    # set GPIO 7 as input
+    echo "in" > /sys/class/gpio/gpio$IOT_SK_SX1301_RESET_PIN/direction; WAIT_GPIO
+}
+
+iot_sk_term() {
+    # cleanup GPIO 7
+    if [ -d /sys/class/gpio/gpio$IOT_SK_SX1301_RESET_PIN ]
+    then
+        echo "$IOT_SK_SX1301_RESET_PIN" > /sys/class/gpio/unexport; WAIT_GPIO
+    fi
+}
+
+case "$1" in
+    start)
+    iot_sk_term
+    iot_sk_init
+    ;;
+    stop)
+    iot_sk_term
+    ;;
+    *)
+    echo "Usage: $0 {start|stop} [<gpio number>]"
+    exit 1
+    ;;
+esac
+
+exit 0