coreJSON library
Note
The content on this page may not be up-to-date. Please refer to the
FreeRTOS.org library page
Introduction
JSON (JavaScript Object Notation) is a human-readable data serialization format. It is widely used to exchange data, such as with the AWS IoT Device Shadow service, and is part of many APIs, such as the GitHub REST API. JSON is maintained as a standard by Ecma International.
The coreJSON library provides a parser that supports key lookups while strictly enforcing the ECMA-404 Standard JSON Data
Interchange syntax
Memory
use
The coreJSON library uses an internal stack to track nested structures in a JSON document. The stack exists for
the duration of a single function call; it is not preserved. Stack size may be specified by defining the macro,
JSON_MAX_DEPTH
, which defaults to 32 levels. Each level consumes a single byte.
Code Size of coreJSON (example generated with GCC for ARM Cortex-M) | ||
---|---|---|
File | With -O1 Optimization | With -Os Optimization |
core_json.c | 2.9K | 2.4K |
Total estimates | 2.9K | 2.4K |