技能梳理10@RGB+stm32+阿里云

阿里云通过esp8266控制下位机控制RGB不同颜色，区分度255255255

1、项目简介

2、实现逻辑

#esp8266初始化，和阿里云进行连接（开定时器轮询），接收阿里云的数据
#esp8266通过串口将阿里云数据传送给单片机
#单片机控制RGB灯输出不同颜色

3、应用场景

#远程控制装饰灯

4、核心代码梳理

void RGB_LED_Reset(void)
{
    RGB_LED_LOW;
    HAL_Delay(80);
}

void RGB_LED_Write_Byte(uint8_t byte)
{
    uint8_t i;

    for(i=0; i<8; i++)
    {
        if(byte&0x80)
        {
            RGB_LED_Write1();
        }
        else
        {
            RGB_LED_Write0();
        }
        byte <<= 1;
    }
}

void RGB_LED_Write_24Bits(uint8_t green,uint8_t red,uint8_t blue)
{
    RGB_LED_Write_Byte(green);
    RGB_LED_Write_Byte(red);
    RGB_LED_Write_Byte(blue);
}
//亮灯颜色设定，其他颜色以此类推
void RGB_LED_Red(void)
{
    uint8_t i;
    //1个LED全彩灯
    for(i=0; i<1; i++)
    {
        RGB_LED_Write_24Bits(0, 0xff, 0);
    }
}

void RGB_LED_Green(void)
{
    uint8_t i;

    for(i=0; i<1; i++)
    {
        RGB_LED_Write_24Bits(0xff, 0, 0);
    }
}

void RGB_LED_Blue(void)
{
    uint8_t i;

    for(i=0; i<1; i++)
    {
        RGB_LED_Write_24Bits(0, 0, 0xff);
    }
}


/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
    /* USER CODE BEGIN 1 */

    /* USER CODE END 1 */

    /* MCU Configuration--------------------------------------------------------*/

    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();

    /* USER CODE BEGIN Init */

    /* USER CODE END Init */

    /* Configure the system clock */
    SystemClock_Config();

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_USART1_UART_Init();
    /* USER CODE BEGIN 2 */
	__HAL_UART_ENABLE_IT(&huart1,UART_IT_RXNE);//open uart1 RXNE
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1)
    {
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
        HAL_GPIO_TogglePin(GPIOB, LED_Pin);
        HAL_Delay(200);
        
       // if(rx_ok)
        {
            //rx_order++;
            //rx_ok = 0;
            RGB_LED_Write_24Bits(gv, rv, bv);
        }
    }
    /* USER CODE END 3 */
}


//lua脚本程序
R = 0
G = 0  
B = 0

pin=4
gpio.mode(pin,gpio.OUTPUT)

cfg = {}  
cfg.ssid = "esp8266" 
cfg.pwd = "esp8xxest"
  
wifi.setmode(wifi.STATION) 
wifi.sta.config(cfg)
wifi.sta.connect()
     
timer1 = tmr.create()
timer2 = tmr.create()
 
 
ProductKey = "xxxxxbwI"  
DeviceName = "rgb-mqtt" 
DeviceSecret = "77445179xxxxab61b7a03fe"
RegionId = "cxxxxai"
ESP8266ClientId = 202xxx10
 
SubTopic="/a1xxx5bwI/rgb-mqtt/user/R" 
Pubtopic="/sys/a1hxxx5bwI/rgb-mqtt/thing/event/property/post"

BrokerAddress = ProductKey..".iot-as-mqtt."..RegionId..".aliyuncs.com"
BrokerPort = 1883

HmacData = "clientId"..ESP8266ClientId.."deviceName"..DeviceName.."productKey"..ProductKey
MQTTClientId = ESP8266ClientId.."|securemode=3,signmethod=hmacsha1|"
MQTTUserName = DeviceName.."&"..ProductKey
MQTTPassword = crypto.toHex(crypto.hmac("sha1",HmacData,DeviceSecret))


function ConnectWifi()
    if wifi.sta.getip() == nil then
        print("Connecting...")
        gpio.write(pin,gpio.HIGH) 
    else
        timer1:stop()
        print("Connect AP success")
        print(wifi.sta.getip())
        MQTTClient = mqtt.Client(MQTTClientId, 120, MQTTUserName, MQTTPassword, false)
        MQTTClient:connect(BrokerAddress, BrokerPort, 0, function(client)
            
            timer1:stop()
           -- print("MQTT connect success")
            gpio.write(pin,gpio.LOW) 
            
            MQTTClient:subscribe(SubTopic,0,function(conm)
                 print("MQTT subscribe success")
                 MQTTOn()
            end)
           
        end, 
 
        function(client,reason)
            print("MQTT connect fail:"..reason)
        end)
    end
end
 
function MQTTOn()
    print("MQTT listen...") 
    MQTTClient:on("message",function(client,topic,data)
--      print("\n")
--      print(topic..":")
--      print(data)
        local match_1 = string.find(data,"{", 2)
        local match_2 = string.find(data,"}")
        local match_3 = string.sub(data, match_1+5, match_2-1)

        if(string.find(data,"R")) then
            print(string.format("orderR %s F ",match_3))
            R = match_3 + 0
            MQTTPublish() 
        end
        if(string.find(data,"G")) then
            print(string.format("orderG %s F ",match_3))
            G = match_3 + 0
            MQTTPublish() 
        end
        if(string.find(data,"B")) then
            print(string.format("orderB %s F ",match_3))
            B = match_3 + 0
            MQTTPublish() 
        end 
    end) 
end  

function MQTTPublish()
    data = {} 
    data.R = R
    data.G = G
    data.B = B
    ok,json = pcall(sjson.encode, {params=data})
--  print("message:"..json)
    MQTTClient:publish(Pubtopic, json, 0, 0, function(client)
--      print("Publish weather success")
    end)
end

timer1:alarm(500, tmr.ALARM_AUTO, ConnectWifi)

5、部分参考资料

#阿里云官网资料
#将往期关于esp8266博客
#如下资料见资料包或者去对应官网和论坛查找

6、注意事项

#阿里云和onenet的连接方式有些区别，页面也有些区别
#esp8266运行lua脚本前，需要烧录可执行的脚本文件，具体步骤产看往期博客
#阿里云收费的，前期可能便宜点

完整可运行项目地址