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    Help needed: Arduino Wireless Notice Board project

    Arduino
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    • rafitc99
      rafitc99 @salmanfaris last edited by

      @salmanfaris in serial monitor getting normal text. No problem in there.

      salmanfaris 1 Reply Last reply Reply Quote 0
      • salmanfaris
        salmanfaris @rafitc99 last edited by

        @rafitc99 Okay, it might be sending char from SMS buffer to LED panel. let me check, I'll get back to you.

        1 Reply Last reply Reply Quote 0
        • A
          arunksoman @rafitc99 last edited by

          @rafitc99 Please answer my question...

          1. Why did u declared message as const? Const indicates you are not going to change that variable any more.

          Try to use c_str() instead to_charArray()

          Reference

          1 Reply Last reply Reply Quote 0
          • salmanfaris
            salmanfaris last edited by

            @rafitc99 , @SAFVAN did you tried the @arunksoman suggestion?

            1 Reply Last reply Reply Quote 0
            • S
              SAFVAN last edited by

              Now message is displaying with mobile number, date, time.
              I want filter the actual message only.

              salmanfaris 1 Reply Last reply Reply Quote 0
              • salmanfaris
                salmanfaris @SAFVAN last edited by

                @SAFVAN what was the solution with the previous problem?

                rafitc99 1 Reply Last reply Reply Quote 0
                • rafitc99
                  rafitc99 @salmanfaris last edited by

                  @salmanfaris tried @arunksoman suggestion , c_str() instead to_charArray().. But want to parse SMS body only. Now working on that.

                  C 1 Reply Last reply Reply Quote 1
                  • C
                    codelery @rafitc99 last edited by

                    @rafitc99 what is the final code? Could you please share it with us? I have been battling with a similar project.

                    Which Arduino board did you use?

                    thanks

                    rafitc99 1 Reply Last reply Reply Quote 0
                    • rafitc99
                      rafitc99 @codelery last edited by

                      @codelery You can use any Arduino board. So far as i remember, we used Arduino UNO.

                      Somehow i found the code in my gist. It was a 3 year old project. So, i don't remember most of the things

                      Code:

                      #include <SoftwareSerial.h>
                      #include <SPI.h>
                      #include <DMD.h>
                      #include <TimerOne.h>
                      #include "SystemFont5x7.h"
                      #include "Arial_black_16.h"
                      
                      #define ROW 1
                      #define COLUMN 1
                      #define FONT Arial_Black_16
                      
                      DMD led_module(ROW, COLUMN);
                      
                      String st;
                      const char *msg;
                      unsigned int LengMsg;
                      char finalMsg[100] = "";
                      SoftwareSerial mySerial(3, 2);
                      
                      void scan_module() {
                        led_module.scanDisplayBySPI();
                      }
                      
                      void setup() {
                        Timer1.initialize(2000);
                        Timer1.attachInterrupt(scan_module);
                        led_module.clearScreen( true );
                      
                        Serial.begin(9600);
                        mySerial.begin(9600);
                        Serial.println("Starting...");
                        delay(1000);
                        mySerial.println("AT");
                        updateSerial();
                        mySerial.println("AT+CMGF=1");
                        updateSerial();
                        mySerial.println("AT+CNMI=1,2,0,0,0");
                        updateSerial();
                      }
                      
                      void loop() {
                        //  pollSms();
                        displayMessage();
                        delay(500);
                      
                        //Start print in led matrix
                        led_module.selectFont(FONT);
                        led_module.drawMarquee(finalMsg, LengMsg, (32 * ROW), 0);
                        long start = millis();
                        long timming = start;
                        boolean flag = false;
                        while (!flag) {
                          if ((timming + 20) < millis()) {
                            flag = led_module.stepMarquee(-1, 0);
                            timming = millis();
                          }
                        }
                      }
                      
                      //------GSM Helper
                      
                      void displayMessage()
                      {
                        delay(500);
                        String msg = "";
                        int start = 0, endPoint = 0;
                        finalMsg[100] = "";
                        while (Serial.available())
                        {
                          mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
                          //     parseData(mySerial.readString());//Calls the parseData function to parse SMS
                        }
                        while (mySerial.available())
                        {
                          msg = mySerial.readString();//Forward what Software Serial received to Serial Port
                        }
                      
                        if (msg.length() > 1) {
                          start = msg.indexOf('*') + 1;
                          endPoint = msg.indexOf('#') - 1;
                          int count = 0;
                          if (start > 1 && endPoint > 1) {
                            strcpy( finalMsg, "");
                      
                            for (int i = start; i <= endPoint; i++) {
                              finalMsg[count] = msg[i];
                              count++;
                            }
                            Serial.println("SMS Received: ");
                            Serial.println(finalMsg);
                            LengMsg = count;
                          }
                          else{
                            return false;
                          }
                        }
                      }
                      
                      void updateSerial()
                      {
                        delay(500);
                        while (Serial.available())
                        {
                          mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
                        }
                        while (mySerial.available())
                        {
                          Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
                        }
                      }
                      

                      NB: The sms body should be between start and hash
                      Eg: * Hello Makers! #

                      C 2 Replies Last reply Reply Quote 0
                      • C
                        codelery @rafitc99 last edited by

                        @rafitc99 thank you so much. I will try it out and see if it will work.

                        1 Reply Last reply Reply Quote 0
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                        • @codelery Awesome. That's great news. Kudos to @rafitc99 . 🙌

                          @codelery Please keep us updated about your project, looking forward to seeing it in action 🤩

                          • read more
                        • C

                          @rafitc99 I changed the buffer and that solved the problem. Thanks a lot for coming to my rescue.

                          • read more
                        • C

                          @salmanfaris I did change the buffer size and everything is working perfectly. Thanks coming to my rescue.

                          • read more
                        • @codelery said in Help needed: Arduino Wireless Notice Board project:

                          I am using the hardware serial (pin 0 and 1 on Arduino Uno)

                          As @rafitc99 mentioned, you need to expand the Serila buffer, in the hardware serial also the Arduino board package implements a 64-byte ring buffer for send and receive on the hardware serial messages. So you need to change that to 256 as per your message length.

                          • read more
                        • C

                          @rafitc99 The thing is that I am not using the SoftwareSerial library in receiving the message from the first microcontroller. I am using the hardware serial (pin 0 and 1 on Arduino Uno)

                          • read more
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