App launching, some porting work complete

biogascontrollerapp/lib/instructions.py

@@ -1,22 +1,61 @@
-from typing import Optional
 import lib.com
 import lib.decoder
+import time
 
 # TODO: Load filters (for comport search)
 com = lib.com.Com()
 decoder = lib.decoder.Decoder()
 
 class Instructions:
-    def __init__(self) -> None:
-        pass
+    def set_port_override(self, override: str) -> None:
+        com.set_port_override(override)
 
     def _hook(self, instruction: str, sequence: list[str]) -> bool:
+        # Send instruction to microcontroller to start hooking process
+        com.send(instruction)
+        
+        # Record start time to respond to timeout
+        start = time.time()
+
+        # Check for timeout
+        pointer = 0
+        sequence_max = len(sequence) - 1
+        while time.time() - start < 5:
+            if ( decoder.decode_ascii( com.receive(1) ) ) == sequence[pointer]:
+                pointer += 1
+            else:
+                pointer = 0
+
+            if pointer == sequence_max:
+                return True
+
         return False
 
-    def change_temperature(self, new_temps: list[float]) -> None:
-        pass
+    def _change_data(self, instruction: str, readback: list[str], data: list[float], readback_length: int) -> None:
+        # Hook to stream
+        if self._hook(instruction, readback):
+            while len(data) > 0:
+                if com.receive(readback_length) != '':
+                    com.send_float(data.pop(0))
+                else:
+                    com.close()
+                    raise Exception('Failed to transmit data. No response from controller')
+            com.close()
+        else:
+            com.close()
+            raise ConnectionError('Failed to hook to controller data stream. No fitting response received')
 
     def change_config(self, new_config: list[float]) -> None:
-        pass
+        self._change_data('PR', ['\n', 'P', 'R', '\n'], new_config, 3)
 
+    def change_temperature(self, temperatures: list[float]) -> None:
+        self._change_data('PT', ['\n', 'P', 'T', '\n'], temperatures, 3)
+
+    def enable_fastmode(self) -> None:
+        com.send('FM')
+        com.close()
+
+    def disable_fastmode(self) -> None:
+        com.send('NM')
+        com.close()