add convenience functions to client object to get firmware version

ckcc/client.py

@@ -334,6 +334,18 @@ class ColdcardDevice:
 
         return pbkdf2_hmac('sha256' if v3 else 'sha512', text_password, salt, PBKDF2_ITER_COUNT)[:32]
 
+    def firmware_version(self):
+        return self.send_recv(CCProtocolPacker.version()).split("\n")[1]
+
+    def is_edge(self):
+        # returns True if device is running EDGE firmware version
+        if self.is_simulator:
+            cmd = "import version; RV.write(str(int(getattr(version, 'is_edge', 0))))"
+            rv = self.send_recv(b'EXEC' + cmd.encode('utf-8'), timeout=60000, encrypt=False)
+            return rv == b"1"
+
+        return self.firmware_version()[-1] == "X"
+
 
 class UnixSimulatorPipe:
     # Use a UNIX pipe to the simulator instead of a real USB connection.