Question

我有一个项目，其中我使用Arduino从两个来源收集传感器数据，然后使用TX-> RX和RX-> TX将它们发送到ESP8266。因为我使用自动连接将ESP连接到WiFi，所以无法使用AT Commands和SoftwareSerial。通过输入我的wifi名称和密码以及ThingSpeak Write API密钥并将它们存储在ESP的EPROM中，我已经能够使ESP连接到wifi并将信息发送到ThingSpeak。然后，我使用以下代码将传感器信息以字符串形式从Arduino发送到ESP。

const int batteryInPin = A1;
sensorBatValue = analogRead(batteryInPin);
sensorOutValue = map(sensorBatValue,0,1024,0,225);
const int waterInPin = A3;
int waterSensorInValue;//reading our water lever sensor
int waterSensorOutValue;//conversion of water sensor value
waterSensorInValue = analogRead(waterInPin);
waterSensorOutValue = map(waterSensorInValue,0,1024,0,225);
f = String('<')+String("Hi")+String(',')+String(waterSensorOutValue)+String(',')+String(sensorBatValue)+String('>');
Serial.print(f);

然后我使用以下代码在ESP上获取信息，并将其发送给ThingSpeak

const byte numChars = 32;
char receivedChars[numChars];
char tempChars[numChars];  
char messageFromPC[numChars] = {0};
int floatFromPC = 0;
int floatFromPC2 = 0;
boolean newData = false;
char Password[36]="";
long itt = 500;
long itt2 = 500;

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 \0
        parseData();
        showParsedData();
        newData = false;
    }
long itt =floatFromPC;
long itt2 = floatFromPC2;

long itt =floatFromPC;


    long itt2 = floatFromPC2;

EEPROM.begin(512);
    Serial.println(""); //Goto next line, as ESP sends some garbage when you reset it  
  Serial.print(char(EEPROM.read(addr)));    //Read from address 0x00
  addr++;                      //Increment address
  Serial.print(char(EEPROM.read(addr)));    //Read from address 0x01
  addr++;                      //Increment address
  Serial.println(char(EEPROM.read(addr)));    //Read from address 0x02

  //Read string from eeprom
  String www;   
  //Here we dont know how many bytes to read it is better practice to use some terminating character
  //Lets do it manually www.circuits4you.com  total length is 20 characters
  for(int i=0;i<16;i++) 
  {
    www = www + char(EEPROM.read(0x0F+i)); //Read one by one with starting address of 0x0F    
  }  

  Serial.print(www);  //Print the text on serial monitor




    if (client.connect(defaultHost,80))
    { // "184.106.153.149" or api.thingspeak.com
        itt++;  //Replace with a sensor reading or something useful

        String postStr = www;
        postStr +="&field1=";
        postStr += String(itt);
        postStr +="&field2=";
        postStr += String(itt2);
        postStr += "\r\n\r\n\r\n";

        client.print("POST /update HTTP/1.1\n");
        client.print("Host: api.thingspeak.com\n");
        client.print("Connection: close\n");
        client.print("X-THINGSPEAKAPIKEY: "+String (www)+"\n");
        client.print("Content-Type: application/x-www-form-urlencoded\n");
        client.print("Content-Length: ");
        client.print(postStr.length());
        client.print("\n\n\n");
        client.print(postStr);

        Serial.println("% send to Thingspeak");
    }

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] = '\0'; // 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
    floatFromPC = atoi(strtokIndx);     // convert this part to an integer

    strtokIndx = strtok(NULL, ",");
    floatFromPC2 = atoi(strtokIndx);     // convert this part to a float

}

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

void showParsedData() {
    Serial.print("Message ");
    Serial.println(messageFromPC);
    Serial.print("Float ");
    Serial.println(floatFromPC);
    Serial.print("Float ");
    Serial.println(floatFromPC2);
}

正如我所说，我不使用AT命令将其发送给ThingSpeak。

起初，我在Arduino Uno R3上做得很好，但是由于尺寸和假定的能源效率，我决定选择Arduino Pro Mini。但是，现在将Arduino Pro Mini以完全相同的代码和相同的布线连接到ESP时，它不起作用。[code] [/ code]

我是否需要使用其他代码才能使其正常工作？ ESP确实允许我输入信息并连接到wifi，并且确实在适当的时候将信息发送到ThingSpeak。我不知道是否从Arduino Pro Mini将信息发送到ESP，但是当应该发送f字符串时，我没有看到闪烁的灯光。在ThingSpeak中，发布的水位为1，电池电量为0。

任何想法将不胜感激。

将字符串从Arduino Pro Mini发送到ESP8266-01

0 个答案: