micropython阿里云三元组自动计算代码

以下是Micropython平台下计算阿里云IoT平台三元组的代码：

import hashlib
import hmac
import ubinascii
import urequests
import ujson

# 阿里云IoT平台的三元组信息
product_key = "your_product_key"
device_name = "your_device_name"
device_secret = "your_device_secret"

# 获取阿里云IoT平台的时间戳和nonce
def get_timestamp_and_nonce():
    response = urequests.get("https://iot-auth.cn-shanghai.aliyuncs.com/auth/timestamp")
    json_data = ujson.loads(response.text)
    timestamp = json_data["timestamp"]
    nonce = json_data["nonce"]
    return timestamp, nonce

# 计算签名
def get_signature():
    # 获取时间戳和nonce
    timestamp, nonce = get_timestamp_and_nonce()
    # 拼接待签名字符串
    sign_content = "deviceName" + device_name + "productKey" + product_key + "timestamp" + timestamp + "nonce" + nonce
    # 计算签名
    sign = hmac.new(bytes(device_secret, "utf-8"), bytes(sign_content, "utf-8"), hashlib.sha1).digest()
    sign_hex = ubinascii.hexlify(sign).decode()
    # 返回签名、时间戳和nonce
    return sign_hex, timestamp, nonce

# 打印计算结果
sign, timestamp, nonce = get_signature()
print("Sign: ", sign)
print("Timestamp: ", timestamp)
print("Nonce: ", nonce)

使用该代码，你可以自动计算出阿里云IoT平台的三元组信息。请将代码中的 `your_product_key`、`your_device_name` 和 `your_device_secret` 替换为你自己的三元组信息。