Added script to test camera max FPS

Author: siliconwitch

tests/test_camera_fps.py

@@ -0,0 +1,96 @@
+from aioconsole import ainput
+from frameutils import Bluetooth
+import asyncio
+
+image_buffer = b""
+
+
+def receive_data(data):
+    global image_buffer
+
+    if len(data) == 1:
+        with open("temp_focus_image.jpg", "wb") as f:
+            f.write(image_buffer)
+            image_buffer = b""
+        return
+
+    image_buffer += data[1:]
+    print(
+        f"Received {str(len(image_buffer)-1)} bytes. Press enter to finish      ",
+        end="\r",
+    )
+
+
+async def main():
+
+    lua_script = """
+    local last_autoexp_time = 0
+    local state = 'CAPTURE'
+    local state_time = 0
+
+    while true do
+        if state == 'CAPTURE' then
+            frame.camera.capture { quality_factor = 10 }
+            state_time = frame.time.utc()
+            state = 'WAIT'
+        elseif state == 'WAIT' then
+            if frame.time.utc() > state_time + 0.5 then
+                state = 'SEND'
+            end
+        elseif state == 'SEND' then
+            local i = frame.camera.read(frame.bluetooth.max_length() - 1)
+            if (i == nil) then
+                state = 'DONE'
+            else
+                while true do
+                    if pcall(frame.bluetooth.send, '0' .. i) then
+                        break
+                    end
+                end
+            end
+        elseif state == 'DONE' then
+            while true do
+                if pcall(frame.bluetooth.send, '0') then
+                    break
+                end
+            end
+            state = 'CAPTURE'
+        end
+
+        if frame.time.utc() - last_autoexp_time > 0.1 then
+            frame.camera.auto { metering = 'CENTER_WEIGHTED', exposure = -0.5, exposure_limit = 5500 }
+            last_autoexp_time = frame.time.utc()
+        end
+    end
+    """
+
+    # Connect to bluetooth and upload file
+    b = Bluetooth()
+    await b.connect(
+        print_response_handler=lambda s: print(s), data_response_handler=receive_data
+    )
+
+    print("Uploading script")
+
+    await b.send_break_signal()
+
+    await b.send_lua("f=frame.file.open('main.lua', 'w')")
+
+    for line in lua_script.splitlines():
+        await b.send_lua(f'f:write("{line}\\n");print(nil)', await_print=True)
+
+    await b.send_lua("f:close()")
+
+    await asyncio.sleep(0.1)
+
+    await b.send_reset_signal()
+
+    # Wait until a keypress
+    await ainput("")
+
+    await b.send_break_signal()
+    await b.disconnect()
+
+
+loop = asyncio.new_event_loop()
+loop.run_until_complete(main())