# Technical reference
<a name="managedintegrations-sdk-device-appendix"></a>

**Topics**
+ [Reference: Supported platforms](#managedintegrations-sdk-device-appendixA)
+ [Reference: Technical requirements](#managedintegrations-sdk-device-appendixB)
+ [Reference: Common API](#managedintegrations-sdk-device-appendixC)

## Reference: Supported platforms
<a name="managedintegrations-sdk-device-appendixA"></a>

The following table displays the supported platforms for the SDK.


**Supported platforms**  

| Platform | Architecture | Operating system | 
| --- | --- | --- | 
| Linux x86\_64 | x86\_64 | Linux | 
| Ambarella | Armv8 (AArch64) | Linux | 
| AmebaD | Armv8-M 32 bit | FreeRTOS | 
| ESP32S3 | Xtensa LX7 32 bit | FreeRTOS | 

## Reference: Technical requirements
<a name="managedintegrations-sdk-device-appendixB"></a>

The following table shows the technical requirements for the SDK, including the RAM space. The End device SDK itself requires about 5 to 10 MB of ROM space when using the same configuration.


**RAM space**  

| SDK and components | Space requirements (bytes used) | 
| --- | --- | 
| End device SDK itself | 180 KB | 
| Default MQTT Agent command queue | 480 bytes (can be configured) | 
| Default MQTT Agent incoming queue | 320 bytes (can be configured) | 

## Reference: Common API
<a name="managedintegrations-sdk-device-appendixC"></a>

This section is a list of API operations that are not specific to a cluster.

```
/* return code for data model related API */
enum iotmiDev_DMStatus
{
  /* The operation succeeded */
  iotmiDev_DMStatusOk = 0,
  /* The operation failed without additional information */
  iotmiDev_DMStatusFail = 1,
  /* The operation has not been implemented yet. */
  iotmiDev_DMStatusNotImplement = 2,
  /* The operation is to create a resource, but the resource already exists. */
  iotmiDev_DMStatusExist = 3, 
}

/* The opaque type to represent a instance of device agent. */
struct iotmiDev_Agent;

/* The opaque type to represent an endpoint. */
struct iotmiDev_Endpoint;

/* A device agent should be created before calling other API */
struct iotmiDev_Agent* iotmiDev_create_agent();

/* Destroy the agent and free all occupied resources */
void iotmiDev_destroy_agent(struct iotmiDev_Agent *agent);

/* Add an endpoint, which starts with empty capabilities */
struct iotmiDev_Endpoint* iotmiDev_addEndpoint(struct iotmiDev_Agent *handle, uint16 id, const char *name);

/* Test all clusters registered within an endpoint.
   Note: this API might exist only for early drop. */
void iotmiDev_testEndpoint(struct iotmiDev_Endpoint *endpoint);
```