Tuya Connect kit for MQTT embedded C

Tuya Connect kit for MQTT embedded C

Overview

Tuya IoTOS Link SDK provides core capabilities, such as device connection, uplink and downlink communication, and OTA across platforms and operating systems. The SDK is implemented in the C programming language and does not depend on the specific device platform and OS environment. It only needs to support the TCP/IP protocol stack and provide the necessary system-dependent interfaces of the SDK to complete the integration.

Get started

Prerequisites

Ubuntu and Debian

sudo apt-get install make cmake libqrencode-dev

Clone the repository

git clone https://github.com/tuya/tuya-connect-kit-for-mqtt-embedded-c.git --recurse-submodules

Compile the code

mkdir build && cd build
cmake ..
make

Run the demo

./bin/switch_demo

Usage example

Initialize a client object tuya_iot_client_t client. tuya_iot_config_t is used to initialize the product ID, authorization information, and other configuration parameters.

/* Instantiate the client */
tuya_iot_client_t client; 

/* Instantiate the config */
tuya_iot_config_t config = {
    .software_ver = "1.0.0",
    .productkey = <Product ID>,
    .uuid = <UUID>,
    .authkey = <AUTHKEY>,
    .event_handler = user_event_handler_on
};

/* Initialize the client */
tuya_iot_init(&client, &config);

Define application layer event callbacks. The callback function is used for the application layer to receive SDK event notifications, such as data point (DP) delivery and cloud connection status notifications:

/* Tuya SDK event callback */
void user_event_handler_on(tuya_iot_client_t* client, tuya_event_msg_t* event)
{
    switch(event->id){
    case TUYA_EVENT_DP_RECEIVE:
        TY_LOGI("DP recv:%s", (const char*)event->data);
        /* After receiving the DP distribution, 
        the DP data needs to be reported to synchronize the APP status. */
        break;

    case TUYA_EVENT_MQTT_CONNECTED:
        TY_LOGI("Device MQTT Connected!");
        break;
    ...

    default:
        break;
    }
}

Start the Tuya Link SDK service.

tuya_iot_start(&client);

A loop is called to yield the current thread to the underlying Tuya Link SDK client.

tuya_iot_yield(&client);

Report example:

/* Boolean */
const char bool_value[] = {"{\"101\":true}"};
tuya_iot_dp_report_json(&client, bool_value);

/* Integer */
const char int_value[] = {"{\"102\":123}"};
tuya_iot_dp_report_json(&client, int_value);

/* String*/
const char string_value[] = {"{\"103\":\"helloworld\"}"};
tuya_iot_dp_report_json(&client, string_value);

/* Enum */
const char enum_value[] = {"{\"104\":\"auto\"}"};
tuya_iot_dp_report_json(&client, enum_value);

/* RAW */
const char raw_value[] = {"{\"105\":\"aGVsZA==\"}"};
tuya_iot_dp_report_json(&client, raw_value);

/* Multiple combinations */
const char multiple_value[] = {"{\"101\":true,\"102\":123,\"103\":\"hellowrold\",\"104\":\"auto\",\"105\":\"aGVsZA==\"}"};
tuya_iot_dp_report_json(&client, multiple_value);

License

Distributed under the MIT License. For more information, see LICENSE.

nvq247/tuya-connect-kit-for-mqtt-embedded-c