I have a serial barcode scanner and Arduino Uno.
I need to configuration..one Correct barcode scanning led on.
my code is
void setup ()
{
Serial.begin (9600);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
}
void loop ()
{
if(Serial.available())
{
String command =Serial.readStringUntil('\n');
Serial.println(command);
if(command =="1010007")
{
digitalWrite(3, HIGH);
digitalWrite(4,LOW);}
else
if(command !="1010007")
{digitalWrite(4,HIGH);
digitalWrite(5,HIGH);
digitalWrite(3,LOW);}
}}
im scanning barcode 1010007 it showing serial monitor g⸮⸮⸮⸮ like this
how to fix it
plz help
and i try another code it showing correctly barcode,,,,,i scan 1010007 serial monitor also same 1010007
but led not on...code is below,,,
#include <SoftwareSerial.h>
SoftwareSerial barcode = SoftwareSerial(2, 3, true); // RX, TX
void setup()
{
Serial.begin(9600);
pinMode(3, OUTPUT);
barcode.begin(9600);
delay(1000);
}
void loop()
{
if(barcode.available())
{
char data = barcode.read();
Serial.write(data);
if(data=="101007")
{
digitalWrite(3, HIGH);
}
}}
Related
#include <Arduino.h>
#include <WiFi.h>
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
const char *ssid = "name";
const char *password = "pass";
AsyncWebServer server(80);
void setup() {
pinMode(LED_BUILTIN, OUTPUT);
Serial.begin(115200);
Serial.println("setup0");
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
Serial.println("setup1");
}
void loop() {
delay(2000);
digitalWrite(LED_BUILTIN, HIGH);
Serial.println("loop .... ");
delay(2000);
digitalWrite(LED_BUILTIN, LOW);
}
I am running the above code using the platformio ide in vscode. Whenever I upload the code using the wifi functions and then use the serial monitor to see the output, it prints nothing. If I exclude the wifi functions and upload the rest of the code then the serial monitor shows the correct println outputs. I cannot figure out if it has something to do with the network and what would I have to change or something else. Any ideas on why this occurs would be much appreciated, thanks.
I am trying to connect my MSP432 to my HC-05 Bluetooth module however when I connect to the module using a Bluetooth terminal, I receive no feedback. I've attached my code as well. Is the RX pin P3.2 and TX P3.3?
void setup() {
Serial.begin(9600); /* Define baud rate for serial communication */
pinMode(12, OUTPUT);
}
void loop() {
if (Serial.available()) /* If data is available on serial port */
{
char data_received;
data_received = Serial.read(); /* Data received from bluetooth */
if (data_received == '1')
{
digitalWrite(12, HIGH);
Serial.write("LED turned ON");
}
else if (data_received == '2')
{
digitalWrite(12, LOW);
Serial.write("LED turned OFF");
}
else
{
Serial.write("Select either 1 or 2");
}
}
}
I'm trying to save my received SMS into a string but it doesn't work. This is my error message :
recive_0_1:50:28: error: invalid conversion from 'int' to 'char' [-fpermissive] exit status 1 invalid conversion from 'int' to 'char'
[-fpermissive] This report would have more information with "Show
verbose output during compilation" option enabled in File ->
Preferences.**
#include <SoftwareSerial.h>
#include <string.h>
char message[160]; // max size of an SMS
char* text;
String data;
//Create software serial object to communicate with SIM800L
SoftwareSerial mySerial(4, 5); //SIM800L Tx & Rx is connected to Arduino #3 & #2
void setup()
{
//Begin serial communication with Arduino and Arduino IDE (Serial Monitor)
Serial.begin(9600);
//Begin serial communication with Arduino and SIM800L
mySerial.begin(9600);
Serial.println("Initializing...");
delay(1000);
mySerial.println("AT"); //Once the handshake test is successful, it will back to OK
updateSerial();
mySerial.println("AT+CMGF=1"); // Configuring TEXT mode
updateSerial();
mySerial.println("AT+CNMI=1,2,0,0,0"); // Decides how newly arrived SMS messages should be handled
updateSerial();
}
void loop()
{
updateSerial();
}
void updateSerial()
{
// char c;
delay(500);
while (Serial.available())
{
mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
//char data=Serial.read();
//Serial.println(data,DEC);
}
while(mySerial.available())
{
Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
text=mySerial.read();
Serial.print(text);
//}
}
}
It looks like you're running into problems from trying to convert integers to characters. I use the below code to read from my SIM card to my SIM900 device:
1st: my software serial is defined and my setup script run:
SoftwareSerial gprsSerial(7, 8);
void setup()
{
pinMode(13, OUTPUT);
gprsSerial.begin(19200);
Serial.begin(19200);
delay(200);
// set up your AT COMMANDS HERE - I HAVE NOT INCLUDED THESE
}
Then I run my loop function as follows, calling the additional functions specified thereafter, :
void loop() {
readSMS();
delay(2000);
}
void toSerial(){
delay(200);
if(gprsSerial.available()>0){
textMessage = gprsSerial.readString();
delay(100);
Serial.print(textMessage);
}
}
void readSMS() {
textMessage = "";
gprsSerial.print("AT+CSQ\r");
toSerial();
gprsSerial.print("AT+CMGF=1\r");
toSerial();
gprsSerial.println("AT+CNMI=2,2,0,0,0\r");
delay(2000);
toSerial();
}
With the above you should not get any data type conversion hassles.
I Am working with arduino mega 2560....
Here I want to toggle two led simultaneously using threading.....
but there is problem that it is running one by one...
here is the code...
it would b your pleasure...
#include <SPI.h>
#include <Thread.h>
#include <ThreadController.h>
Thread Led1=Thread();
Thread Led2=Thread();
ThreadController controll=ThreadController();
void Led1run()
{
Serial.println("Led1");
Led2.run();
for(int i=0;i<5;i++)
{
digitalWrite(13,HIGH);
delay(1000);
digitalWrite(13,LOW);
delay(1000);
}
}
void Led2run()
{
Serial.println("Led2");
for(int i=0;i<5;i++)
{
digitalWrite(53,HIGH);
delay(1000);
digitalWrite(53,LOW);
delay(1000);
}
}
void setup()
{
Serial.begin(9600);
Led1.onRun(Led1run);
Led2.onRun(Led2run);
controll.add(&Led1);
pinMode(13,OUTPUT);
pinMode(53,OUTPUT);
}
void loop()
{
if(Serial.available())
{
Serial.println("loop");
Led1.run();
}
}
Its my first time to use gsm shield to my arduino so I'm kinda confused so i need directions. My aim is to read the message sent to my gsm shield then compare that message into a specific string. if they are the same, arduino will do something. Example is, the GSM shield received a text message containing STATUS, the arduino will do something. The problem I'm stuck up with now is how to read the incoming characters from the gsm module into a single string then compare that string into a specific word. I have this code as of now.
#include <SoftwareSerial.h>
#include <String.h>
char inchar[255];
SoftwareSerial cell(2,3);
int led1 = 22;
#define powerOn 4
int i;
//char comparestring[160];
char command[]={'S','T','A','T','U','S','\0'}; // this is a string for command ended with null terminator
void setup()
{
// ilagay sa loob ng setup
digitalWrite(powerOn, HIGH);
delay(1500);
digitalWrite(powerOn, LOW);
delay(5000);
pinMode(led1, OUTPUT);
digitalWrite(led1, LOW);
Serial.begin(9600);
cell.b-egin(9600);
delay(30000);
cell.println("AT+CMGF=1"); // set SMS mode to text
delay(200);
cell.println("AT+CNMI=1,2,0,0,0 "); // set module to send SMS data to serial out upon receipt
delay(200);
Serial.println("GSM SHIELD IS NOW OK AND READY");
}
void loop()
{
while(cell.available() >0)
{
inchar[i]=cell.read();
i++;
inchar[i] = '\0';
Serial.print(inchar);
if (inchar==command)
{
digitalWrite(led1, HIGH);
cell.write("AT+CMGS=\"");
cell.write("09267955775");
cell.write("\"\r");
delay(1000);
cell.write("\nTerminal Monitoring System");
delay(1000);
cell.write(0x1A); // End the SMS with a control-z
}
else
{
Serial.println("\nInvalid Keyword! Type ?");
dig-italWrite(led1, LOW);
}
}
}
these codes are the codes that supposed to do the trick but i think its not working. I hope you can teach me the right way. Thank you!
while(cell.available() >0)
{
inchar[i]=cell.read();
i++;
inchar[i] = '\0';
Serial.print(inchar);
if (inchar==command)
inchar is a string so try using strcmp(inchar,command) for comparing the two.