[offline voice topic ④] Anxin VC offline voice development board secondary development voice control LED light

List of articles

【 Offline voice topics ①】 Anxin can the latest offline voice module VC Series factory firmware tutorial ——SDK Open source ？
【 Offline voice topics ②】 Anxin can use the voice open platform ——VC series SDK Acquisition
【 Offline voice topics ③】 Anxinco VC Series offline voice SDK Development environment construction —— be based on Linux System

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Preface

        After studying the previous two chapters , I believe you have understood the construction process of the development environment . Even compiled firmware , And tested . This article will start with product creation , Realize voice control step by step LED The function of .
Anxin can voice open platform ：http://voice.ai-thinker.com/#/

One 、RGB Category product generation

        stay Lamps and lanterns Category selection RGB The lamp , Choose a scene Select the pure offline scheme in the , Select module You can choose according to your actual hardware , I choose VC-02. Fill in product information The product name in is optional , Just choose Chinese as the language . Pull down to the bottom , Click on preservation .

1. Product function definition

        stay voice SDK In the options , Front end signal processing 、Pin Foot configuration Keep default

2. Define control LED Wake up words and replies

3. Define command words and responses

        stay Basic information in

• Behavior ： namely action, Used for internal code identification , Required
• Command word ： Voice command word , Instructions that need to be written to the module , Multiple commands with “ | ” separate , Required
• Reply ： That is, the reply corresponding to the command word , Multiple replies “ | ” separate , Required
  

4. Add control

        stay Control details Add the control corresponding to the command word ：

        In the development board , By default, three LED The lamp , Corresponding GPIO Namely ：

LED	GPIO
Blue light （React）	GPIO_A25
Warm light （Warn）	GPIO_B2
Cold light （Cool）	GPIO_B3

You can add wake-up status lights , for example ： The blue light is the wake-up status light 、 The warm light is controlled by the command word .

5. Complete production process ( contain SDK Generate )

Two 、SDK Download and firmware download

SDK It takes time to generate , There's no need to worry .
If you don't need additional functions , You can directly choose firmware download , It can generate firmware consistent with customized functions , Then burn it .
If you need to add other functions , For example, exit wake-up and turn off the blue light . Just download SDK, Modify the source code to realize the function .

1. Firmware download

        Firmware download is to compile the current firmware through the remote server SDK Firmware generated after , There are usually four firmware , They are ：

• uni_app_debug.bin： Debug firmware , Debugging information output , You need a special debugger to burn
• uni_app_debug_update.bin： Debug version of serial port upgrade firmware , have access to UART Burn
• uni_app_release.bin： Official firmware , You need a special debugger to burn
• uni_app_release_update.bin： The official version of serial port upgrade firmware , have access to UART Burn
  

2.SDK download

       SDK The downloaded file is in compressed format , Recommended Linux The system decompresses , Decompression instructions ：

tar -xzvf uni_hb_m_solution-xxxxx-xxxxxxxx.tar.gz

3、 ... and 、 Code modification and compilation

        We need to be here SDK Add an exit wake-up turn off blue LED The function of the lamp , So you need to look at the code . We made it to order SDK The default function is in user/src/examples/hb_auto_gpio.c in , What is used Demo yes USER_DEMO_AUTO_GPIO ：

Register the exit wake-up event and its callback

        In the original code . The callback of wake-up event has been registered by default . And lit blue in the callback LED The lamp （GPIO_A25 High level ）, Functions to be added ： Turn off blue when exiting wake-up LED The lamp , Modification steps ：

• Register exit wake-up event
• Add the function of exiting the wake-up event callback

// Exit wake-up callback 
static void _goto_sleeping_cb(USER_EVENT_TYPE event, user_event_context_t* context)
{
    
  event_goto_sleeping_t* sleeping = NULL;
  if (context)
  {
    
    sleeping = &context->goto_sleeping;
    user_gpio_set_value(GPIO_NUM_A25, 0);
    user_player_reply_list_random(sleeping->reply_files);
  }

}

static void _register_event_callback(void) {
    
 ....
  // Register exit wake-up callback 
  user_event_subscribe_event(USER_GOTO_SLEEPING, _goto_sleeping_cb);
}

In order to facilitate burning, we use serial port to burn , In path uni_hb_m_solution/unione_lite_app_hb_m Execute compilation command ：

./build.sh update

after , Use serial port upgrade to verify the function ,

Four 、 Friendship connection

Anxin can voice open platform ：http://voice.ai-thinker.com
Official website ：https://www.ai-thinker.com
Development DOCS：https://docs.ai-thinker.com
Official forum ：http://bbs.ai-thinker.com
Technical support ：[email protected]