output

Send structured data from your device to the cloud. Use this to store sensor readings, telemetry, metrics, or any JSON data you want to persist and query later.

output_emit

Sends JSON data to the cloud.

Parameters:

• json_data: Pointer to a null-terminated JSON string

Returns:

• 0 on success, negative value on error

AssemblyScript

// @ts-ignore
@external("output", "output_emit")
export declare function outputEmit(jsonData: usize): i32;

// Example
const data = '{"temperature": 25.5, "humidity": 60}';
outputEmit(toCString(data));

C

__attribute__((import_module("output")))
__attribute__((import_name("output_emit")))
extern int output_emit(const char* json_data);

// Example
output_emit("{\"temperature\": 25.5, \"humidity\": 60}");

Rust

#[link(wasm_import_module = "output")]
extern "C" {
  #[link_name = "output_emit"]
  fn output_emit(json_data: *const u8) -> i32;
}

// Example
let data = c"{\"temperature\": 25.5}";
output_emit(data.as_ptr());

TinyGo

//go:wasmimport output output_emit
func OutputEmit(jsonData *byte) int32

// Example
data := append([]byte(`{"temperature": 25.5}`), 0)
OutputEmit(&data[0])

Zig

pub extern "output" fn output_emit(json_data: [*:0]const u8) i32;

// Example
_ = output_emit("{\"temperature\": 25.5}");