From b1a9fd07da8ec9eebdc44ab3fbccfbc8f43687c2 Mon Sep 17 00:00:00 2001
From: Xianjun Jiao <xianjun.jiao@ugent.be>
Date: Mon, 28 Mar 2022 12:17:16 +0200
Subject: [PATCH] Add scripts to ease rx gain setting

---
 user_space/set_rx_gain_auto.sh   | 36 ++++++++++++++++++++++++
 user_space/set_rx_gain_manual.sh | 47 ++++++++++++++++++++++++++++++++
 2 files changed, 83 insertions(+)
 create mode 100755 user_space/set_rx_gain_auto.sh
 create mode 100755 user_space/set_rx_gain_manual.sh

diff --git a/user_space/set_rx_gain_auto.sh b/user_space/set_rx_gain_auto.sh
new file mode 100755
index 0000000..18f3c36
--- /dev/null
+++ b/user_space/set_rx_gain_auto.sh
@@ -0,0 +1,36 @@
+#!/bin/sh
+
+# Author: Xianjun Jiao
+# SPDX-FileCopyrightText: 2019 UGent
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+home_dir=$(pwd)
+
+set -x
+if test -f "/sys/bus/iio/devices/iio:device0/in_voltage_rf_bandwidth"; then
+  cd /sys/bus/iio/devices/iio:device0/
+else if test -f "/sys/bus/iio/devices/iio:device1/in_voltage_rf_bandwidth"; then
+       cd /sys/bus/iio/devices/iio:device1/
+     else if test -f "/sys/bus/iio/devices/iio:device2/in_voltage_rf_bandwidth"; then
+            cd /sys/bus/iio/devices/iio:device2/
+          else if test -f "/sys/bus/iio/devices/iio:device3/in_voltage_rf_bandwidth"; then
+                 cd /sys/bus/iio/devices/iio:device3/
+               else if test -f "/sys/bus/iio/devices/iio:device4/in_voltage_rf_bandwidth"; then
+                      cd /sys/bus/iio/devices/iio:device4/
+                    else
+                      echo "Can not find in_voltage_rf_bandwidth!"
+                      echo "Check log to make sure ad9361 driver is loaded!"
+                      exit 1
+                    fi
+               fi
+          fi
+     fi
+fi
+
+echo fast_attack > in_voltage0_gain_control_mode
+cat in_voltage0_gain_control_mode
+cat in_voltage0_hardwaregain
+
+cd $home_dir
+
+set +x
diff --git a/user_space/set_rx_gain_manual.sh b/user_space/set_rx_gain_manual.sh
new file mode 100755
index 0000000..08ee762
--- /dev/null
+++ b/user_space/set_rx_gain_manual.sh
@@ -0,0 +1,47 @@
+#!/bin/sh
+
+# Author: Xianjun Jiao
+# SPDX-FileCopyrightText: 2019 UGent
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+gain_dB=$1
+if [ -z $gain_dB ]
+then
+  gain_dB=0
+fi
+
+home_dir=$(pwd)
+
+set -x
+if test -f "/sys/bus/iio/devices/iio:device0/in_voltage_rf_bandwidth"; then
+  cd /sys/bus/iio/devices/iio:device0/
+else if test -f "/sys/bus/iio/devices/iio:device1/in_voltage_rf_bandwidth"; then
+       cd /sys/bus/iio/devices/iio:device1/
+     else if test -f "/sys/bus/iio/devices/iio:device2/in_voltage_rf_bandwidth"; then
+            cd /sys/bus/iio/devices/iio:device2/
+          else if test -f "/sys/bus/iio/devices/iio:device3/in_voltage_rf_bandwidth"; then
+                 cd /sys/bus/iio/devices/iio:device3/
+               else if test -f "/sys/bus/iio/devices/iio:device4/in_voltage_rf_bandwidth"; then
+                      cd /sys/bus/iio/devices/iio:device4/
+                    else
+                      echo "Can not find in_voltage_rf_bandwidth!"
+                      echo "Check log to make sure ad9361 driver is loaded!"
+                      exit 1
+                    fi
+               fi
+          fi
+     fi
+fi
+
+echo manual > in_voltage0_gain_control_mode
+cat in_voltage0_gain_control_mode
+
+if [ $gain_dB -gt 0 ]; then
+  echo $gain_dB > in_voltage0_hardwaregain
+fi
+
+cat in_voltage0_hardwaregain
+
+cd $home_dir
+
+set +x