For EdgeX version 3.0 ("Minnesota") the SDK API is updated, and some re-coding of device service implementations will be required.
In version 3.0 the SDK has a dependency on IOTech's C Utilities which should be satisfied by installing the relevant package. Previous versions built the utilities into the SDK library.
The type field in both devsdk_resource_t and devsdk_device_resources is now an iot_typecode_t rather than a
pointer to one. Additionally the type field in edgex_resourceoperation is an iot_typecode_t.
The edgex_propertytype enum and the functions for obtaining one from iot_data_t have been removed. Instead, first consult the
type field of an iot_typecode_t. This is an instance of the iot_data_type_t enumeration, the enumerands of which are similar
to the EdgeX types, except that there are some additional values (not used in the C SDK) such as Vectors and Pointers, and there is
a singular Array type. The type of array elements is held in the element_type field of the iot_typecode_t.
Binary data is now supported directly in the utilities, so instead of allocating an array of uint8, the
iot_data_alloc_binary function is available.