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Merge pull request #4 from PatrickBaus/add_isolator_bricklet
Add isolator bricklet
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| #!/usr/bin/env python3 | ||
| # pylint: disable=duplicate-code | ||
| """ | ||
| An example to demonstrate most of the capabilities of the Tinkerforge Isolator Bricklet. | ||
| """ | ||
| import asyncio | ||
| import warnings | ||
| from decimal import Decimal | ||
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| from tinkerforge_async.bricklet_isolator import BrickletIsolator | ||
| from tinkerforge_async.devices import BrickletWithMCU | ||
| from tinkerforge_async.ip_connection import IPConnectionAsync | ||
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| async def process_callbacks(device: BrickletIsolator) -> None: | ||
| """Prints the callbacks (filtered by id) of the bricklet.""" | ||
| async for packet in device.read_events(): | ||
| print("Callback received", packet) | ||
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| async def run_example_generic(bricklet: BrickletWithMCU) -> None: | ||
| """This is a demo of the generic features of the Tinkerforge bricklets with a microcontroller.""" | ||
| uid = await bricklet.read_uid() | ||
| print("Device uid:", uid) | ||
| await bricklet.write_uid(uid) | ||
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| print("SPI error count:", await bricklet.get_spitfp_error_count()) | ||
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| print("Current bootloader mode:", await bricklet.get_bootloader_mode()) | ||
| bootloader_mode = bricklet.BootloaderMode.FIRMWARE | ||
| print("Setting bootloader mode to", bootloader_mode, ":", await bricklet.set_bootloader_mode(bootloader_mode)) | ||
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| print("Disable status LED") | ||
| await bricklet.set_status_led_config(bricklet.LedConfig.OFF) | ||
| print("Current status:", await bricklet.get_status_led_config()) | ||
| await asyncio.sleep(1) | ||
| print("Enable status LED") | ||
| await bricklet.set_status_led_config(bricklet.LedConfig.SHOW_STATUS) | ||
| print("Current status:", await bricklet.get_status_led_config()) | ||
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| print("Get Chip temperature:", await bricklet.get_chip_temperature() - Decimal("273.15"), "°C") | ||
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| print("Reset Bricklet") | ||
| await bricklet.reset() | ||
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| async def run_example(bricklet: BrickletIsolator) -> None: | ||
| """This is the actual demo. If the bricklet is found, this code will be run.""" | ||
| callback_task = asyncio.create_task(process_callbacks(bricklet)) | ||
| try: | ||
| print("Identity:", await bricklet.get_identity()) | ||
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| print("Get isolator statistics:", await bricklet.get_statistics()) | ||
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| # Query a value | ||
| baud_rate = await bricklet.get_spitfp_baudrate() | ||
| print("Set SPITFP baud rate to 400000 baud.") | ||
| await bricklet.set_spitfp_baudrate(400000) | ||
| print("Get SPITFP baud rate:", await bricklet.get_spitfp_baudrate(), "baud") | ||
| await bricklet.set_spitfp_baudrate(baud_rate) | ||
| baud_rate_config = await bricklet.get_spitfp_baudrate_config() | ||
| print("Get SPITFP baud rate config:", baud_rate_config) | ||
| print("Set SPITFP baud rate config:", baud_rate_config) | ||
| await bricklet.set_spitfp_baudrate_config(*baud_rate_config) | ||
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| # Use a configuration callback | ||
| print("Set callback period to", 1000, "ms and wait for callbacks.") | ||
| # We use a low humidity value on purpose, so that the callback will be triggered | ||
| await bricklet.set_statistics_callback_configuration(period=1000, value_has_to_change=False) | ||
| print("Configuration callback configuration:", await bricklet.get_statistics_callback_configuration()) | ||
| await asyncio.sleep(2.1) # Wait for 2-3 callbacks | ||
| print("Disable configuration callback") | ||
| await bricklet.set_statistics_callback_configuration() | ||
| print("Configuration callback configuration:", await bricklet.get_statistics_callback_configuration()) | ||
| # Test the generic features of the bricklet. These are available with all | ||
| # new bricklets that have a microcontroller | ||
| await run_example_generic(bricklet) | ||
| finally: | ||
| callback_task.cancel() | ||
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| async def shutdown(tasks: set[asyncio.Task]) -> None: | ||
| """Clean up by stopping all consumers""" | ||
| for task in tasks: | ||
| task.cancel() | ||
| await asyncio.gather(*tasks) | ||
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| async def main() -> None: | ||
| """ | ||
| The main loop, that will spawn all callback handlers and wait until they are done. There are two callback handlers, | ||
| one waits for the bricklet to connect and runs the demo, the other handles messages sent by the bricklet. | ||
| """ | ||
| tasks = set() | ||
| try: | ||
| # Use the context manager of the ip connection. It will automatically do the cleanup. | ||
| async with IPConnectionAsync(host="127.0.0.1", port=4223) as connection: | ||
| await connection.enumerate() | ||
| # Read all enumeration replies, then start the example if we find the correct device | ||
| async for enumeration_type, device in connection.read_enumeration(): # pylint: disable=unused-variable | ||
| if isinstance(device, BrickletIsolator): | ||
| print(f"Found {device}, running example.") | ||
| tasks.add(asyncio.create_task(run_example(device))) | ||
| break | ||
| print(f"Found {device}, but not interested.") | ||
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| # Wait for run_example() to finish | ||
| await asyncio.gather(*tasks) | ||
| except ConnectionRefusedError: | ||
| print("Could not connect to server. Connection refused. Is the brick daemon up?") | ||
| except asyncio.CancelledError: | ||
| print("Stopped the main loop.") | ||
| raise # It is good practice to re-raise CancelledErrors | ||
| finally: | ||
| await shutdown(tasks) | ||
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| # Report all mistakes managing asynchronous resources. | ||
| warnings.simplefilter("always", ResourceWarning) | ||
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| # Start the main loop and run the async loop forever. Turn off the debug parameter for production code. | ||
| try: | ||
| asyncio.run(main(), debug=True) | ||
| except KeyboardInterrupt: | ||
| print("Shutting down gracefully.") |
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