Question

我正在尝试制作一个简单的硬件，以使用我拥有的数据库远程打开和关闭房间里的灯。为此，我想在ESP-01板上使用ESP8266。

对于工作台测试，我有一个2安培的5v电源。我使用3.3V稳压器（LD33V）来打开ESP-01，并设法与具有“打开/关闭标记”的数据库建立连接。配备LED和330欧姆电阻，就像魅力一样。

片刻过后（我还没有测量，但是只有几分钟），板子完全关闭了。我意识到这可能会消耗大量电流，因此我将相同的代码上传到NodeMCU板上，并用手机充电器为其供电，打开和关闭内置LED。发生了同样的事情。

我猜这可能是软件问题，因为经过这些测试，它似乎不是硬件。也许我需要设置任何虚拟标志或其他东西。

ESP-01的插针中包含以下内容： VCC：来自稳压器的3.3V
GND：来自稳压器的0V
GPI02：330欧姆电阻器和LED
GPIO0：浮动（是的，我在编程时确实将其接地）
TX / RX：浮动
RST：Vcc
CH_PD（启用）：Vcc

#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>

#include <MySQL_Connection.h>
#include <MySQL_Cursor.h>

#define led 2 //pin of the external led

// Inicialização do WiFi
const char* ssid = "xxxxxx";
const char* pass = "xxxxxx";
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; // made-up MAC

WiFiClient client;

// Inicialização do MySQL
MySQL_Connection conn((Client *)&client);
// Create an instance of the cursor passing in the connection
MySQL_Cursor cur = MySQL_Cursor(&conn);
IPAddress server_addr(XXX, XXX , XXX, XXX);          // MySQL server IP
char user[] = "xxxxxx";           // MySQL user
char password[] = "xxxxxx";       // MySQL password
char BANCODEDADOS[] = "USE xxxxxx";

void toggle_lamp(void){

  // FAZ UM SELECT SIMPLES
  char query[] = "SELECT STATUS FROM devices WHERE ID = 1";
  MySQL_Cursor *cur_mem = new MySQL_Cursor(&conn);
  cur_mem->execute(query);
  Serial.println("");
  Serial.print("Executando query: ");
  Serial.println(query);

  // Fetch the columns (required) but we don't use them.
  column_names *columns = cur_mem->get_columns();

  // Read the row (we are only expecting the one)
  row_values *row = NULL;
  //char* result = NULL;
  int lamp_status;

  do {
    row = cur_mem->get_next_row();
    if (row != NULL) {
     // result = row->values[0];
     lamp_status = atoi(row->values[0]);

    }
  } while (row != NULL);

  // Deleting the cursor also frees up memory used
  delete cur_mem;

  // USA O RESULTADO PARA ACENDER UM LED
  //int lamp_status = atoi(result);
  //Serial.println(result);
  Serial.println(lamp_status);
  if(lamp_status == 1){
    digitalWrite(led,HIGH); 
  }
  else{
    lamp_status = 0;
    digitalWrite(led,LOW);

  }

}

void setup(void){

  // Define a saída como output
  pinMode(led,OUTPUT);

  // Inicializa a porta Serial
  Serial.begin(115200);
  Serial.println("");

  // Inicializa a conexão WiFi
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, pass);

  // Wait for connection
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());

  // REALIZA A CONEXÃO COM O MYSQL
  if (conn.connect(server_addr, 3306, user, password)) 
   {
      delay(1000);

      // Initiate the query class instance
      MySQL_Cursor *cur_mem = new MySQL_Cursor(&conn);
      cur_mem->execute(BANCODEDADOS);

      Serial.println("");
      Serial.println("Conectado ao MySQL");
      Serial.print("Usuario:");
      Serial.println(user);
   }
   else
   {
      Serial.println("A conexão falhou");
      conn.close();
   }

} // end setup()

void loop(void){

  toggle_lamp();
  delay(1250);

}

几分钟后，我的NodeMCU和ESP01都关闭了

0 个答案: