From 87c591193411a43e3f65435efd8ad280a2cca72c Mon Sep 17 00:00:00 2001
From: Gauthier Provost <gauthier@kobol.io>
Date: Thu, 6 Sep 2018 16:18:26 +0800
Subject: [PATCH] Add install script Update filenames and paths for clean
 install Rename sys-oled.py to sys-oled Update README file with setup and
 usage instructions

---
 README.md                                     |  71 +++++++++++++++---
 sys_oled.py => bin/sys-oled                   |  21 ++----
 capture/luma_000001.png                       | Bin 1849 -> 3723 bytes
 capture/luma_000002.png                       | Bin 2498 -> 2984 bytes
 capture/luma_000003.png                       | Bin 1938 -> 0 bytes
 etc/sys-oled.conf                             |   3 +
 install.sh                                    |  28 +++++++
 .../sys-oled}/C&C Red Alert [INET].ttf        | Bin
 {img => share/sys-oled}/helios4_logo.png      | Bin
 system/sys-oled.service                       |   9 +++
 systemd/sys_oled_start.service                |   9 ---
 systemd/sys_oled_status.service               |   9 ---
 12 files changed, 109 insertions(+), 41 deletions(-)
 rename sys_oled.py => bin/sys-oled (87%)
 delete mode 100644 capture/luma_000003.png
 create mode 100644 etc/sys-oled.conf
 create mode 100755 install.sh
 rename {font => share/sys-oled}/C&C Red Alert [INET].ttf (100%)
 rename {img => share/sys-oled}/helios4_logo.png (100%)
 create mode 100644 system/sys-oled.service
 delete mode 100644 systemd/sys_oled_start.service
 delete mode 100644 systemd/sys_oled_status.service

diff --git a/README.md b/README.md
index 0974222..5180a02 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,65 @@
-# sys-oled
-Script to display Helios4 system status for i2c OLED screen.
+# Description
+Application to display Helios4 system status for i2c OLED screen.
 
-![system starting](capture/luma_000001.png)
-![system status](capture/luma_000002.png)
-![system time](capture/luma_000003.png)
+![system status](capture/luma_000001.png)
+![system time](capture/luma_000002.png)
 
 * Based on [luma.oled](https://github.com/rm-hull/luma.oled)
-* Script inspired from [sys_info.py](https://github.com/rm-hull/luma.examples/blob/master/examples/sys_info.py) example
+* Inspired from luma.oled [sys_info.py](https://github.com/rm-hull/luma.examples/blob/master/examples/sys_info.py) example
 
-## TO DO
-* How to install
-* How to tweak/configure
-* Add comment to code
+## INSTALLATION
+
+```
+git clone https://github.com/helios-4/sys-oled.git
+sudo ./install.sh
+```
+
+## CONFIGURATION
+
+### Configure OLED display model
+
+1. Test which display model is the correct one by launching manually **sys-oled** and trying different display model as parameter.
+Example :
+
+```
+sudo sys-oled --display ssd1306
+sudo sys-oled --display sh1106
+
+```
+
+Supported values : ssd1306 (default), ssd1322, ssd1325, ssd1327, ssd1331, ssd1351, sh1106.
+
+2. Once you know which display model is the correct one, edit */etc/sys-oled.conf* and update the **DISPLAY=** line.
+
+
+### Configure storage info
+
+For now **sys-oled** is a very crude python app that will require you to edit it directly in order to customize what you want to display.
+
+Edit **sys-oled** script and look for the *status()* function.
+
+```
+sudo nano /usr/local/bin/sys-oled
+```
+
+You can edit the following lines to define for which storage devices you want to display info.
+
+```
+d.text((0, 27), disk_usage('sd', '/'), font=font, fill="white")
+d.text((0, 39), disk_usage('md0', '/mnt/md0'), font=font, fill="white")
+```
+
+In the above example, we are displaying **sd** (SDcard) usage which is the rootfs mounted on *'/'*. We are also displaying **md0** (RAID array) that is mounted on *'/mnt/mnd0'*.
+The values *(0, 27)* and *(0, 39)* correspond to the X, Y positions of displayed texts.
+
+### Start the service
+
+The install script will automatically setup **sys-oled** to start at every startup. Now you can either restart your Helios4 or you can launch directly the service with the following command:
+
+```
+systemctl start sys-oled.service
+```
+
+## Note
+
+This sys-oled app was developed and tested only with the OLED model SH1106 which has a matrix panel of 132 x 64. If you use a different model that has a smaller resolution, you might need to tweak the coordinate values.
diff --git a/sys_oled.py b/bin/sys-oled
similarity index 87%
rename from sys_oled.py
rename to bin/sys-oled
index 2746cd7..231c875 100755
--- a/sys_oled.py
+++ b/bin/sys-oled
@@ -13,7 +13,7 @@ from PIL import Image, ImageDraw, ImageFont
 interval = 4
 
 font_path = os.path.abspath(os.path.join(os.path.dirname(__file__),
-                                'font', 'C&C Red Alert [INET].ttf'))
+                                '../share/sys-oled', 'C&C Red Alert [INET].ttf'))
 font = ImageFont.truetype(font_path, 12)
 
 def get_device(actual_args=None):
@@ -81,7 +81,7 @@ def status(device):
     d.line([(0,13),(128,13)])
     d.text((0, 15), mem_usage(), font=font, fill="white")
     d.text((0, 27), disk_usage('sd', '/'), font=font, fill="white")
-    d.text((0, 39), disk_usage('md0', '/'), font=font, fill="white")
+    d.text((0, 39), disk_usage('md0', '/mnt/md0'), font=font, fill="white")
     d.text((0, 51), network('eth0'), font=font, fill="white")
 
     device.display(txt.convert(device.mode))
@@ -89,7 +89,7 @@ def status(device):
 
 def logo(device, msg):
     img_path = os.path.abspath(os.path.join(os.path.dirname(__file__),
-        'img', 'helios4_logo.png'))
+        '../share/sys-oled', 'helios4_logo.png'))
     logo = Image.open(img_path).convert("RGBA")
 
     background = Image.new("RGBA", device.size)
@@ -109,16 +109,11 @@ signal.signal(signal.SIGTERM, sigterm_handler)
 
 
 def main():
-    if 'HELIOS4_STARTING' in os.environ:
-        logo(device, "System Starting...")
-        device.persist = True
-	time.sleep(6)
-    else:
-        while True:
-            status(device)
-            time.sleep(interval)
-	    logo(device, host_time())
-            time.sleep(interval)
+    while True:
+        status(device)
+        time.sleep(interval)
+        logo(device, host_time())
+        time.sleep(interval)
 
 if __name__ == "__main__":
     try:
diff --git a/capture/luma_000001.png b/capture/luma_000001.png
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diff --git a/etc/sys-oled.conf b/etc/sys-oled.conf
new file mode 100644
index 0000000..487aec0
--- /dev/null
+++ b/etc/sys-oled.conf
@@ -0,0 +1,3 @@
+# Define your OLED display model.
+# Check luma.oled project to check supported displays.
+DISPLAY=sh1106
diff --git a/install.sh b/install.sh
new file mode 100755
index 0000000..1257aaa
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+# Install script for sys-oled
+
+INSTALL_PATH="/usr/local/"
+SYSTEMD_PATH="/etc/systemd/"
+DEPS="python-dev python-pip python-setuptools python-psutil libfreetype6-dev libjpeg-dev build-essential"
+
+if [ "$(id -u)" != "0" ]; then
+    echo "This script must be run as root!"
+    exit 1
+fi
+
+echo "Installing Dependencies"
+apt-get update
+apt-get install -y $DEPS
+
+echo "Installing luma.oled library"
+pip install --upgrade luma.oled
+
+echo "Installing sys-oled files"
+cp -frv bin "$INSTALL_PATH"
+cp -frv etc  "$INSTALL_PATH"
+cp -frv share "$INSTALL_PATH"
+cp -frv system "$SYSTEMD_PATH"
+
+echo "Enabling sys-oled at statup"
+systemctl daemon-reload
+systemctl enable sys-oled.service
diff --git a/font/C&C Red Alert [INET].ttf b/share/sys-oled/C&C Red Alert [INET].ttf
similarity index 100%
rename from font/C&C Red Alert [INET].ttf
rename to share/sys-oled/C&C Red Alert [INET].ttf
diff --git a/img/helios4_logo.png b/share/sys-oled/helios4_logo.png
similarity index 100%
rename from img/helios4_logo.png
rename to share/sys-oled/helios4_logo.png
diff --git a/system/sys-oled.service b/system/sys-oled.service
new file mode 100644
index 0000000..eab848d
--- /dev/null
+++ b/system/sys-oled.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=System Starting on OLED Display
+
+[Service]
+EnvironmentFile=/etc/sys-oled.conf
+ExecStart=/usr/bin/python /usr/local/bin/sys-oled --display ${DISPLAY}
+
+[Install]
+WantedBy=multi-user.target
diff --git a/systemd/sys_oled_start.service b/systemd/sys_oled_start.service
deleted file mode 100644
index 36f4f60..0000000
--- a/systemd/sys_oled_start.service
+++ /dev/null
@@ -1,9 +0,0 @@
-[Unit]
-Description=System Starting on OLED Display
-
-[Service]
-Environment="SYSTEM_STARTING=1"
-ExecStart=/usr/bin/python /usr/local/bin/sys_oled.py --display sh1106
-
-[Install]
-WantedBy=sysinit.target
diff --git a/systemd/sys_oled_status.service b/systemd/sys_oled_status.service
deleted file mode 100644
index dcafe3c..0000000
--- a/systemd/sys_oled_status.service
+++ /dev/null
@@ -1,9 +0,0 @@
-[Unit]
-Description=System Status on OLED Display
-After=sys_oled_start.service
-
-[Service]
-ExecStart=/usr/bin/python /usr/local/bin/sys_oled.py --display sh1106
-
-[Install]
-WantedBy=multi-user.target