【智控万物】CodeLab Adapter控制树莓派GPIO
【前言】操作树莓派 GPIO 的工具里，gpiozero尤为出色，因其具有很好的可理解性。【准备】
参考：https://adapter.codelab.club/extension_guide/rpi_gpio/
【查看引脚】
gpio用的mode是wPi，而gpiozero用的是BCM，所以pin17对应wpi的pin0
【查看代码】
node_raspberrypi.py
'''
pip install gpiozero pigpio --user
# docs: https://gpiozero.readthedocs.io/en/stable/remote_gpio.html
'''
from io import StringIO
import contextlib
import sys
import time
import os# env
from loguru import logger
from codelab_adapter_client import AdapterNode
from codelab_adapter_client.utils import get_or_create_node_logger_dir
#ERO_PIN_FACTORY=pigpio PIGPIO_ADDR= "raspberrypi.local"# 192.168.1.3
#os.environ["GPIOZERO_PIN_FACTORY"] = "pigpio"
#os.environ["PIGPIO_ADDR"] = "raspberrypi.local"
from gpiozero import LED
from gpiozero.pins.pigpio import PiGPIOFactory
from time import sleep
node_logger_dir = get_or_create_node_logger_dir()
debug_log = str(node_logger_dir / "debug.log")
logger.add(debug_log, rotation="1 MB", level="DEBUG")
class RPINode(AdapterNode):
def __init__(self):
super().__init__(logger=logger)
self.NODE_ID = self.generate_node_id(__file__)
#self.factory = PiGPIOFactory(host='127.0.0.1')# 192.168.1.3
self.factory = PiGPIOFactory(host='raspberrypi.local')# 192.168.1.3
# 反馈 连接成功， 与失败
self.led = LED(17, pin_factory=self.factory)
def run_python_code(self, code):
try:
output = eval(code, {"__builtins__": None}, {
"led": self.led,
"factory": self.factory
})
except Exception as e:
output = e
return output
def extension_message_handle(self, topic, payload):
self.logger.info(f'code: {payload["content"]}')
message_id = payload.get("message_id")
python_code = payload["content"]
output = self.run_python_code(python_code)
payload["content"] = str(output)
message = {"payload": payload}
self.publish(message)
def run(self):
"避免插件结束退出"
while self._running:
time.sleep(0.5)
if __name__ == "__main__":
try:
node = RPINode()
node.receive_loop_as_thread()
node.run()
except KeyboardInterrupt:
# node.logger.debug("KeyboardInterrupt") # work mac
if node._running:
node.terminate()# Clean up before exiting.
Adapter Node，可参考：https://adapter.codelab.club/dev_guide/Adapter-Node/
【CodeLab Scratch代码】
【验证】
也是用gpio验证
个人学习备注(一）：Node RED 树莓派物联网
1、Node-RED安装与使用
https://blog.csdn.net/fnFenNuDManMan/article/details/104834919?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1
1.1Node-Red在windows上的安装和运行
https://www.jianshu.com/p/185242483016
如出现如下错误：
这样的问题 经过搜索得出
1.管理员身份打开powerShell
2.输入set-ExecutionPolicy RemoteSigned
浏览器地址栏中输入：http://127.0.0.1:1880/
2、node-red教程2 第一条数据流
https://blog.csdn.net/geek_monkey/article/details/80736954?utm_medium=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromBaidu-1&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromBaidu-1
3、node-red教程3.1 inject介绍
https://blog.csdn.net/geek_monkey/article/details/80737818
4、node-red教程 3.4 switch控件介绍
https://blog.csdn.net/geek_monkey/article/details/80738104
个人学习备注(二）：python3控制树莓派的GPIO端口
https://blog.csdn.net/qq_36958104/article/details/83447224?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromBaidu-1
好文章，认真学习
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