数据格式
通过 HTTP 和 MQTT 使用 API 时,必须遵循特定的数据格式,如下所述。
表达式
表达式 allow performing calculations, primarily for raw data conversion in devices. What are ex按下ions? 表达式 are texts that allow evaluating data, performing calculations, and returning a single value.
Date formats
平台允许 some flexibility in the use of date/time fields in the HTTP and MQTT APIs. Fields are always of type string, but the content can be specified 使用 formats described 此处.