1 files changed, 79 insertions, 0 deletions
diff --git a/util/mtac_003_ap2_reset.sh b/util/mtac_003_ap2_reset.sh
new file mode 100644
index 0000000..cd6c13a
--- /dev/null
+++ b/util/mtac_003_ap2_reset.sh
@@ -0,0 +1,79 @@
+#!/bin/sh
+
+# This script is intended to be used on MTAC-003V3 platform, it performs
+# the following actions:
+#       - export/unpexort pioC23 and pioB13 used to reset the SX1302 chip and setup AP2_NRESET
+#       - export/unexport pioC24 used to reset the optional SX1261 radio used for LBT/Spectral Scan
+#
+# Usage examples:
+#       ./reset_lgw.sh stop
+#       ./reset_lgw.sh start
+
+# GPIO mapping has to be adapted with HW
+#
+
+SX1302_RESET_PIN=87     # SX1302 reset
+AP2_NRESET_PIN=45       # AP2_NRESET
+SX1261_RESET_PIN=88     # SX1261 reset (LBT / Spectral Scan)
+SX1302_RESET_pio=C23    # pio for SX1303 reset
+AP2_NRESET_pio=B13      # pio for AP1_NRESET
+SX1261_NRESET_pio=C24   # pio for SX1261 NRESET
+
+WAIT_GPIO() {
+    sleep 0.1
+}
+
+init() {
+    # setup GPIOs
+    echo "$SX1302_RESET_PIN" > /sys/class/gpio/export; WAIT_GPIO
+    echo "$SX1261_RESET_PIN" > /sys/class/gpio/export; WAIT_GPIO
+    echo "$AP2_NRESET_PIN" > /sys/class/gpio/export; WAIT_GPIO
+
+    # set GPIOs as output
+    echo "out" > /sys/class/gpio/pio$SX1302_RESET_pio/direction; WAIT_GPIO
+    echo "out" > /sys/class/gpio/pio$SX1261_NRESET_pio/direction; WAIT_GPIO
+    echo "out" > /sys/class/gpio/pio$AP2_NRESET_pio/direction; WAIT_GPIO
+}
+
+reset() {
+    # write output for AP2_NRESET and SX1303 reset
+    echo "1" > /sys/class/gpio/pio$AP2_NRESET_pio/value; WAIT_GPIO
+
+    echo "1" > /sys/class/gpio/pio$SX1302_RESET_pio/value; WAIT_GPIO
+    echo "0" > /sys/class/gpio/pio$SX1302_RESET_pio/value; WAIT_GPIO
+
+    echo "0" > /sys/class/gpio/pio$SX1261_NRESET_pio/value; WAIT_GPIO
+    echo "1" > /sys/class/gpio/pio$SX1261_NRESET_pio/value; WAIT_GPIO
+}
+
+term() {
+    # cleanup all GPIOs
+    if [ -d /sys/class/gpio/pio$SX1302_RESET_pio ]
+    then
+        echo "$SX1302_RESET_PIN" > /sys/class/gpio/unexport; WAIT_GPIO
+    fi
+    if [ -d /sys/class/gpio/pio$SX1261_NRESET_pio ]
+    then
+        echo "$SX1261_RESET_PIN" > /sys/class/gpio/unexport; WAIT_GPIO
+    fi
+    if [ -d /sys/class/gpio/pio$AP2_NRESET_pio ]
+    then
+        echo "$AP2_NRESET_PIN" > /sys/class/gpio/unexport; WAIT_GPIO
+    fi
+}
+
+case "$1" in
+    start)
+    term # just in case
+    init
+    reset
+    ;;
+    stop)
+    reset
+    term
+    ;;
+    *)
+    echo "Usage: $0 {start|stop}"
+    exit 1
+    ;;
+esac