Jansson 2的API参考中提供了关于Keil JSON库使用的参数说明

keil提供的JSON库——Jansson API Reference Preliminaries All declara ons are in jansson.h , so it’s enough to #include in each source file. All constants are prefixed with JSON_ (except for those describing the library version, prefixed with JANSSON_ ). Other iden fiers are prefixed with json_ . Type names are suffixed with _t and typedef ‘d so that the struct keyword need not be used.