Migrate MCP and utilities to CircuitPython, including color GIF and volume fixes

scratch/test_rpc.py

@@ -0,0 +1,48 @@
+import urllib.request
+import json
+import time
+
+def call_mcp(method, params={}):
+    url = "http://192.168.68.128/api/mcp"
+    payload = {
+        "jsonrpc": "2.0",
+        "id": 1,
+        "method": method,
+        "params": params
+    }
+    req = urllib.request.Request(
+        url,
+        data=json.dumps(payload).encode("utf-8"),
+        headers={"Content-Type": "application/json"},
+        method="POST"
+    )
+    try:
+        with urllib.request.urlopen(req, timeout=5.0) as resp:
+            return json.loads(resp.read().decode("utf-8"))
+    except Exception as e:
+        return {"error": str(e)}
+
+# 1. Fetch start stats
+print("Fetching start stats...")
+res_start = call_mcp("tools/call", {"name": "get_stream_stats", "arguments": {}})
+print(json.dumps(res_start, indent=2))
+
+# 2. Wait 3 seconds
+print("Waiting 3 seconds...")
+time.sleep(3.0)
+
+# 3. Fetch end stats
+print("Fetching end stats...")
+res_end = call_mcp("tools/call", {"name": "get_stream_stats", "arguments": {}})
+print(json.dumps(res_end, indent=2))
+
+# Calculate FPS
+try:
+    start_stats = json.loads(res_start["result"]["content"][0]["text"])
+    end_stats = json.loads(res_end["result"]["content"][0]["text"])
+    frames_diff = end_stats["frames_drawn"] - start_stats["frames_drawn"]
+    packets_diff = end_stats["udp_packets_received"] - start_stats["udp_packets_received"]
+    print(f"\nResult: Drew {frames_diff} frames in 3.0 seconds ({frames_diff / 3.0:.1f} FPS)")
+    print(f"Packets received: {packets_diff} in 3.0 seconds ({packets_diff / 3.0:.1f} pps)")
+except Exception as e:
+    print("Failed to calculate FPS:", e)