Initial commit: Hw packages

odoo-bringout-oca-ocb-hw_drivers/hw_drivers/iot_handlers/interfaces/DisplayInterface_L.py

@@ -0,0 +1,96 @@
+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from re import sub, finditer
+import subprocess
+import RPi.GPIO as GPIO
+import logging
+
+from odoo.addons.hw_drivers.interface import Interface
+
+
+_logger = logging.getLogger(__name__)
+
+try:
+    from vcgencmd import Vcgencmd
+except ImportError:
+    Vcgencmd = None
+    _logger.warning('Could not import library vcgencmd')
+
+
+class DisplayInterface(Interface):
+    _loop_delay = 0
+    connection_type = 'display'
+
+    def get_devices(self):
+
+        # If no display connected, create "fake" device to be accessed from another computer
+        display_devices = {
+             'distant_display' : {
+                  'name': "Distant Display",
+             },
+        }
+
+        if Vcgencmd:
+            return self.get_devices_vcgencmd() or display_devices
+        else:
+            return self.get_devices_tvservice() or display_devices
+
+
+    def get_devices_tvservice(self):
+        display_devices = {}
+        displays = subprocess.check_output(['tvservice', '-l']).decode()
+        x_screen = 0
+        for match in finditer(r'Display Number (\d), type HDMI (\d)', displays):
+            display_id, hdmi_id = match.groups()
+            tvservice_output = subprocess.check_output(['tvservice', '-nv', display_id]).decode().strip()
+            if tvservice_output:
+                display_name = tvservice_output.split('=')[1]
+                display_identifier = sub('[^a-zA-Z0-9 ]+', '', display_name).replace(' ', '_') + "_" + str(hdmi_id)
+                iot_device = {
+                    'identifier': display_identifier,
+                    'name': display_name,
+                    'x_screen': str(x_screen),
+                }
+                display_devices[display_identifier] = iot_device
+                x_screen += 1
+
+        return display_devices
+
+    def get_devices_vcgencmd(self):
+        """
+        With the new IoT build 23_11 which uses Raspi OS Bookworm,
+        tvservice is no longer usable.
+        vcgencmd returns the display power state as on or off of the display whose ID is passed as the parameter.
+        The display ID for the preceding three methods are determined by the following table.
+
+        Display        ID
+        Main LCD        0
+        Secondary LCD   1
+        HDMI 0          2
+        Composite       3
+        HDMI 1          7
+        """
+        display_devices = {}
+        x_screen = 0
+        hdmi_port = {'hdmi_0' : 2} # HDMI 0
+        rpi_type = GPIO.RPI_INFO.get('TYPE')
+        # Check if it is a RPI 3B+ beacause he response on for booth hdmi port
+        if 'Pi 4' in rpi_type:
+            hdmi_port.update({'hdmi_1': 7}) # HDMI 1
+
+        try:
+            for hdmi in hdmi_port:
+                power_state_hdmi = Vcgencmd().display_power_state(hdmi_port.get(hdmi))
+                if power_state_hdmi == 'on':
+                    iot_device = {
+                        'identifier': hdmi,
+                        'name': 'Display hdmi ' + str(x_screen),
+                        'x_screen': str(x_screen),
+                    }
+                    display_devices[hdmi] = iot_device
+                    x_screen += 1
+        except subprocess.CalledProcessError:
+            _logger.warning('Vcgencmd "display_power_state" method call failed')
+
+        return display_devices