ESP-12e 和 ESP32-CAM 之间的串行通信数据

Question

我有一个 ESP8266-12e 和一个 ESP32-CAM。我正在尝试通过串行连接将数据从 12e 发送到 ESP32。我已将 12e 的 TX 连接到 ESP32 的 RX，将 12e 的 RX 连接到 ESP32 的 TX。它们都由相同的 3.3v 电源为 12E 和 5v 为 ESP32 供电。共同点。

我都设置了115200的波特率。

这是 ESP-12e 的代码

include <ESP8266WiFi.h>
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>  


  char ssid[] = "XXXXXXXX";
  char pass[] = "OOOOOOOO";   

  WiFiClient client;

  String f;
void setup() {
  Serial.begin(115200);
  WiFiManager wifiManager;
WiFi.begin(ssid, pass);
delay(5000);
 if (WiFi.status() == WL_CONNECTED) {  Serial.println("Connected");
delay(1000);}
  Serial.printf("SSID: %s\n", WiFi.SSID().c_str());
Serial.printf("PSK: %s\n", WiFi.psk().c_str());
String ssidString = WiFi.SSID().c_str();
String pskString = WiFi.psk().c_str();
    f = String('<')+String("Hi")+String(',')+String(ssidString)+String(',')+String(pskString)+String('>');
    delay (1000);
 Serial.print(f);

delay(500);

Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
Serial.print(f);
delay(500);
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

这是 ESP32-CAM 的代码

#include <WiFi.h>



const byte numChars = 32; //COULD THIS HAVE SOMETHING TO DO WITH IT
char receivedChars[numChars];
char tempChars[numChars];        // temporary array for use when parsing
// variables to hold the parsed data
char messageFromPC[numChars] = {0};

//CHANGED THIS char ssidString[] = "";  TO THIS
char ssidString[numChars] = {0};
//CHANGED THIS char ssidString[] = "";  TO THIS
char pskString[numChars] = {0};
char myChar[]= "XXXXXXXX";
char myPsk[]= "OOOOOOOO";
boolean newData = false;
//end stuff ti bring in string
String f;


void setup() {
   Serial.begin(115200);

  pinMode(33,OUTPUT);
 digitalWrite(33,HIGH);
  //while (!Serial); 
  //wait for serial connection.
delay(5000);
if(Serial.available()){

  digitalWrite(33,LOW);
  delay(2000);
  
  recvWithStartEndMarkers();
    if (newData == true) {
        strcpy(tempChars, receivedChars);
            // this temporary copy is necessary to protect the original data
            //   because strtok() used in parseData() replaces the commas with [=11=]
        parseData();
        showParsedData();
        newData = false;
    }

    Serial.print("network");
    Serial.print(ssidString);
    Serial.print("pass");
    Serial.print(pskString);
 
}

    delay(5000);
    
    if(pskString == "OOOOOOOO"){
digitalWrite(33,HIGH);
}
delay(1000);
if(ssidString == "Gary's Wi-Fi Network"){
digitalWrite(33,LOW);
}
delay(1000);

/*if(ssidString=="");{
  digitalWrite(33,LOW);
  delay(2000);
  digitalWrite(33,HIGH);
}*/

#define SSID1 ssidString//"XXXXXXXX"
#define PWD1 pskString//"Homenetwork"
  // put your main code here, to run repeatedly:
   WiFi.begin(ssidString, pskString);
   delay(5000);
 if (WiFi.status() == WL_CONNECTED) {  digitalWrite(33,HIGH);
delay(1000);}

  // put your setup code here, to run once:

}

void loop() {

  

}


//more new stuff for string
void recvWithStartEndMarkers() {
    static boolean recvInProgress = false;
    static byte ndx = 0;
    char startMarker = '<';
    char endMarker = '>';
    char rc;


    while (Serial.available() > 0 && newData == false) {
        rc = Serial.read();

        if (recvInProgress == true) {
            if (rc != endMarker) {
                receivedChars[ndx] = rc;
                ndx++;
                if (ndx >= numChars) {
                    ndx = numChars - 1;
                }
            }
            else {
                receivedChars[ndx] = '[=11=]'; // terminate the string
                recvInProgress = false;
                ndx = 0;
                newData = true;
            }
        }

        else if (rc == startMarker) {
            recvInProgress = true;
        }
    }
}

//============

void parseData() {      // split the data into its parts

    char * strtokIndx; // this is used by strtok() as an index

    strtokIndx = strtok(tempChars,",");      // get the first part - the string
    strcpy(messageFromPC, strtokIndx); // copy it to messageFromPC
 
    strtokIndx = strtok(NULL, ","); // this continues where the previous call left off
    strcpy(ssidString,strtokIndx);
    

    strtokIndx = strtok(NULL, ",");
    strcpy(pskString,strtokIndx);
    

  

}

//============

void showParsedData() {
    Serial.print("Message ");
    Serial.println(messageFromPC);
    Serial.print("ssid");
    
    Serial.println(ssidString);
    Serial.print("psk");
    
    Serial.println(pskString);
  
}

正如我所说，我尝试将条件代码放在不同的地方。我尝试使用 ssidString 和 pskString 的直接编码。没有改善。我希望这会有所帮助，有人可以帮助我解决这个问题。谢谢

Answer 1

所以我终于通过将以下部分更改为我上次发布的代码来完成此工作：

const byte numChars = 100;
char ssidString[numChars] = {0};
char pskString[numChars] = {0};

现在效果很好。

ESP-12e 和 ESP32-CAM 之间的串行通信数据

Serial communicate data between an ESP-12e and ESP32- CAM

string

serial-port

char

esp8266

esp32