Add support for Stellarium+ Mobile

docs/source/build_guide.rst

@@ -8,7 +8,6 @@ Introduction and Overview
 
 Welcome to the PiFinder build guide!  This guide is split into three main parts, one for building the :ref:`UI Board<build_guide:pifinder ui hat>` with Screen and Buttons, a section related to :ref:`3d printing<build_guide:printed parts>` and preparing the case parts, and one for :ref:`final assembly<build_guide:assembly>`.   Along with these sections, please consult the :doc:`Bill of Materials<BOM>` for a full list of parts required and reach out with any questions via `email <mailto:info@pifinder.io>`_ or `discord <https://discord.gg/Nk5fHcAtWD>`_
 
-If you've received a kit with an assembled UI Board + 3d Parts, you can jump right to the :ref:`final assembly<build_guide:assembly>`.  Otherwise, fire up that 3d printer and get the :ref:`parts printing<build_guide:printing>` while you work to assemble the UI Hat.
 
 PiFinder UI Hat
 ========================

python/PiFinder/pos_server.py

@@ -90,6 +90,31 @@ def get_telescope_dec(shared_state, _):
     return dec_result
 
 
+def get_distance_bars(_shared_state, _input_str):
+    return "\x7f"
+
+
+def get_firmware_date(_shared_state, _input_str):
+    return "Jan 28 2026"
+
+
+def get_firmware_version(_shared_state, _input_str):
+    return "01.0"
+
+
+def get_product(_shared_state, _input_str):
+    return "PiFinder"
+
+
+def get_firmware_time(_shared_state, _input_str):
+    return "17:25:00"
+
+
+def get_status(_shared_state, _input_str):
+    # Indicates alt-az mode, tracking, and 1-star aligned
+    return "AT1"
+
+
 def respond_none(shared_state, input_str):
     return None
 
@@ -182,13 +207,20 @@ def extract_command(s):
 
 
 lx_command_dict = {
+    "D": get_distance_bars,
     "GD": get_telescope_dec,
     "GR": get_telescope_ra,
-    "RS": respond_none,
-    "MS": respond_zero,
-    "Sd": parse_sd_command,
-    "Sr": parse_sr_command,
-    "Q": respond_none,
+    "GVD": get_firmware_date,
+    "GVN": get_firmware_version,
+    "GVP": get_product,
+    "GVT": get_firmware_time,
+    "GW": get_status,
+    "RS": respond_none, # Set slew rate to max
+    "MS": respond_zero, # Slew to object
+    "Q": respond_none, # Abort
+    "U": respond_none, # Precision toggle
+    "Sd": parse_sd_command, # Set declination
+    "Sr": parse_sr_command, # Set RA
 }
 
 
@@ -216,8 +248,13 @@ def handle_client(client_socket, shared_state):
                 command_handler = lx_command_dict.get(command, not_implemented)
                 out_data = command_handler(shared_state, in_data)
                 if out_data:
-                    response = out_data if out_data in ("0", "1") else out_data + "#"
+                    response = out_data if out_data in ("0", "1", "AT1") else out_data + "#"
                     client_socket.send(response.encode())
+            # Special case for the ACK command in the LX200 protocol sent by Stellarium
+            # No leading : for the ACK command but Stellarium leads all commands with #
+            elif in_data[0] == 0x06 or (in_data[0] == b'#' and in_data[1] == 0x06):
+                # A indicates alt-az mode
+                client_socket.send("A".encode())
         except socket.timeout:
             logging.warning("Connection timed out.")
             break