[doc] updated documentation fitting to new procedure

staging/dev/INSTALL

@@ -14,28 +14,110 @@ The downloaded img is resized on the SD card during the installation. We will ne
 qemu-img resize rpi.img +1G
 ```
 
-Install dependencies :
+### After booting
+
+Log-in : rpi
+Password : raspberry
+
+Login as root :
+
+```
+sudo su
+```
+
+Create udev rules :
+
+```
+cat << EOF > /etc/udev/rules.d/42-rs485.rules
+SUBSYSTEMS=="usb-serial", DRIVERS=="ftdi_sio", SYMLINK+="rs485"
+EOF
+```
+
+
+#### Dependencies
 
 ```
 apt install git sqlite3 python3-pip python3-click python3-requests python3-netifaces python3-serial
 ```
 
+#### Deployment 
+
 Deploy pyHeatpump. Replace MONITORING_SERVER with the address of your server :
+
 ```
 mkdir /var/lib/pyheatpump
 echo 'pip3 install --upgrade git+https://git.yannweb.net/cli/pyHeatpump.git' > /var/lib/pyheatpump/pyheatpump_upgrade.sh
 chmod +x /var/lib/pyheatpump/pyheatpump_upgrade.sh
 /var/lib/pyheatpump/pyheatpump_upgrade.sh
+```
 
-cp db/*.sql /var/lib/pyheatpump/
-cp db/*.service /var/lib/pyheatpump/
-cp db/*.timer /var/lib/pyheatpump/
+#### Database initialisation
+```
+cat << EOF > /var/lib/pyheatpump/pyheatpump.sql
+
+CREATE TABLE IF NOT EXISTS var_type (
+  slabel CHAR(1) UNIQUE PRIMARY KEY,
+  label VARCHAR(10) UNIQUE,
+  type VARCHAR(10) NOT NULL,
+  start_address INT NOT NULL DEFAULT 0,
+  end_address INT NOT NULL DEFAULT 250
+);
+
+CREATE TABLE IF NOT EXISTS variable (
+  type CHAR(1) NOT NULL,
+  address INT NOT NULL,
+  unit VARCHAR(5) NULL,
+  last_update INT NULL,
+
+
+  FOREIGN KEY (type) REFERENCES var_type(slabel)
+    ON DELETE CASCADE,
+  PRIMARY KEY(type, address)
+);
+
+CREATE TABLE IF NOT EXISTS var_value (
+  type CHAR(1) NOT NULL,
+  address INT NOT NULL,
+  time INT DEFAULT (strftime('%s', datetime('now'))),
+  value INT NOT NULL,
+
+  FOREIGN KEY (type) REFERENCES variable(type)
+    ON DELETE CASCADE,
+  FOREIGN KEY (address) REFERENCES variable(address)
+    ON DELETE CASCADE,
+  PRIMARY KEY(type, address, time)
+);
+
+INSERT INTO var_type (slabel, label, type, start_address, end_address) VALUES (
+  'A', 'Analog', 'float', 1, 5000);
+INSERT INTO var_type (slabel, label, type, start_address, end_address) VALUES (
+  'I', 'Integer', 'int', 5002, 10002);
+INSERT INTO var_type (slabel, label, type, start_address, end_address) VALUES (
+  'D', 'Digital', 'bool', 1, 2048);
+
+CREATE TRIGGER variable_last_update AFTER INSERT ON var_value
+FOR EACH ROW
+BEGIN
+  UPDATE variable
+  SET last_update = NEW.time
+  WHERE
+    type = NEW.type
+    AND
+    address = NEW.address;
+END;
+
+EOF
 
 sqlite3 -init /var/lib/pyheatpump/pyheatpump.sql /var/lib/pyheatpump/pyheatpump.sqlite3
 
+```
+
+#### PyHeatpump configuration file
+```
 cat << EOF > /var/lib/pyheatpump/pyheatpump.ini
 [heatpump]
 database = /var/lib/pyheatpump/pyheatpump.sqlite3
+serial_port = /dev/rsa485
 
 [supervisor]
 scheme = https
@@ -49,15 +131,80 @@ heatpump_id = 42
 [api]
 host = 0.0.0.0
 port = 80
+
+EOF
+```
+
+
+#### API Service (no-need in production)
+```
+cat << EOF > /var/lib/pyheatpump/pyheatpump_api.service
+[Unit]
+Description=API to fetch data from heatpump with HTTP
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory=/var/lib/pyheatpump/
+Environment="LOGLEVEL=INFO"
+ExecStart=/usr/bin/env pyheatpump run
+KillMode=mixed
+TimeoutStopSec=30
+PrivateTmp=true
+
+[Install]
+WantedBy=multi-user.target
+
+EOF
+```
+
+
+#### Fetch Service
+```
+cat << EOF > /var/lib/pyheatpump/pyheatpump_fetch.service
+[Unit]
+Description=pyHeatpump fetch - retrieve the data from the serial port with modbus
+Wants=dev-rs485.device
+
+[Service]
+Type=simple
+WorkingDirectory=/var/lib/pyheatpump/
+Environment="LOGLEVEL=INFO"
+ExecStart=/usr/bin/env pyheatpump fetch -t D -t A -t I
+ExecStop=/usr/bin/env pyheatpump supervise --since
+KillMode=mixed
+TimeoutStopSec=30
+PrivateTmp=true
+
 EOF
+```
 
+
+#### Fetch Timer
+```
+cat << EOF > /var/lib/pyheatpump/pyheatpump_fetch.service
+[Unit]
+Description=Timer to launch pyheatpump fetch every minute
+
+[Timer]
+OnStartSec=15sec
+OnUnitInactiveSec=1m
+
+[Install]
+WantedBy=timers.target
+
+EOF
+```
+
+#### Installation of the services
+```
 cd /etc/systemd/system
 ln -s /var/lib/pyheatpump/pyheatpump_api.service
 ln -s /var/lib/pyheatpump/pyheatpump_fetch.service
 ln -s /var/lib/pyheatpump/pyheatpump_fetch.timer
-ln -s /var/lib/pyheatpump/pyheatpump_supervise.service
-ln -s /var/lib/pyheatpump/pyheatpump_supervise.timer
 
 systemctl daemon-reload
 systemctl enable pyheatpump_api.service pyheatpump_fetch.timer pyheatpump_supervise.timer
-```
+```
+
+You may now reboot to see if everything works.