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Questions tagged [softwareserial]

A library for emulating UART functionality in software on any available digital IO pins. Use this tag for questions regarding SoftwareSerial.

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21 views

Converting each digit in an integer to its respective ASCII characters

For example what would be the process of converting the integer 1023 into ascii characters of 0x31 (1) 0x30 (0) 0x32 (2) 0x33 (3) Not looking for any library functions (I know of Serial.print() and ...
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0answers
29 views

Will this code for braking of dc motor using sensor work?

#define trigPin 13 #define echoPin 14 #define e1 10 // Enable Pin for motor 1 #define t1 8 // Control pin 1 for motor 1 #define t2 9 // Control pin 2 for motor 1 #define led 3 #define led2 5 #...
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1answer
48 views

no matching function to call for SoftwareSerial::SoftwareSerial(int&,int&)? How to rectify this problem

#include <LiquidCrystal.h> #include <SoftwareSerial.h> float pulse = 0; float temp = 0; SoftwareSerial ser(9,10); String apiKey = "U5AGYVQT5JRJPSDR"; // Variables int pulsePin = A0;...
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2answers
150 views

Use ATtiny85 to perform initial config on a Cisco router using its USB console port

We have 200+ brand new Cisco routers that have USB console ports (but not the old RJ45 serial console ports). This is quite frustrating because the routers didn't ship with console cables and Cisco ...
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1answer
582 views

Send data string from Arduino UNO to ESP8266-01

Is there anyway to send a string from an Arduino UNO to a ESP8266-01 (one with only 8 pins RX, TX, CH-PD, vcc, ground, reset, GPIO0, GPIO2) without using without using AT commands. I've looked ...
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2answers
31 views

How do software interfaces compare to hardware interfaces in therms of speed and reliability?

The Arduino core includes numerous software interfaces mimicking the hardware interfaces provided by the chip and even extending beyond. My question is, if in a project I can either use software or ...
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1answer
45 views

Serial communication from Arduino to ESP8266 NodeMCU works, but from NodeMCU to Arduino isn't working

My circuit connection is like: (I am following this tutorial) Code uploaded to Arduino: #include <SoftwareSerial.h> #include <ArduinoJson.h> SoftwareSerial s(5,6); void setup() { s....
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0answers
21 views

Nodemcu & GSM module & CLIP problem (CLIP line not always appears on the serial connection)

I'm working on phone-controlled car park gate. Trusted employees numbers are saved on SIM card/hard coded in program. So the idea is, if a trusted person calls the "gate number" ; Nodemcu will ...
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1answer
32 views

GSM incoming bytes from UART not complete

I have used AT commands to read incoming bytes from serial buffer from SIM900A but I cannot get the complete message using the code below: while(ss.available()>0) { inChar=ss.read(); inString+=...
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2answers
90 views

Sim800 FTP Arduino

I've been unable to FTP anything using an Arduino and SIM800L. I have reduced the code as far as possible: #include <SoftwareSerial.h> //Create software serial object to communicate with ...
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1answer
78 views

Using Arduino as ISP and SoftwareSerial at the same time

I'm trying to use my Arduino Uno as an ISP to program an ATTiny85 and at the same time check my board by using the SoftwareSerial library to output the values I'm getting from my sensor. Is this ...
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0answers
21 views

Characters like '$' coming through weirdly (as in '$$amd4') when sent from ESP8266 to Uno via Serial

I am running a program on an Uno using data that an ESP8266 is sending via Serial (can't run directly on the ESP8266 due to not enough GPIOs) and I'm having a problem where characters like '$' on a ...
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2answers
33 views

SoftwareSerial interfers with TVout

I'm using an Arduino uno and a Nodemcu for making a game with the phone as a WiFi controller. The Nodemcu is the server that receives inputs from the phone connected via WiFi and sends to the Arduino ...
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1answer
3k views

Did not find fingerprint sensor :( Arduino Mega 2560 Adafruit Fingerprint Sensor

I'm getting the following error when I try to enroll fingerprints using the Arduino Mega 2560 microcontroller along with a Fingerprint Scanner: Did not find fingerprint sensor :( The exact devices ...
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2answers
60 views

UART communication - Serial is always empty

I have a payment terminal which uses UART (or simply speaking Rx, Tx, Gnd pins) and I have an Android tablet app which is connected to the terminal using USB to DB9 adapter based on PL2303 chip. The ...
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2answers
393 views

Using the YS-IRTM with an Arduino Uno

Picked up a YS-IRTM IR Transmitter/Receiver module to do some testing for a project. There's not a lot of details on it but eventually came across two very important sources: Translated Module ...
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2answers
60 views

SoftwareSerial receives beginning of data mangled

I'm using SoftwareSerial to communicate with a Sigfox module. Documentation for the read function assigns its value to a char. However using it I get mangled characters and also have read in other ...
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1answer
569 views

GMS send SMS text messages many times

The GSM sends many SMS text messages and does not stop. How to send only one SMS? This is my code: #include <SoftwareSerial.h> SoftwareSerial mySerial(9, 10); char msg; int vibr_pin = 7; void ...
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2answers
112 views

Two serials can't work on the same speed

I have a device which sits on pins 10/11 of Arduino UNO. I am trying to send commands from my PC using Arduino to relay my commands to the device via Serial. The problem is that if I use speed 9600 ...
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1answer
535 views

Problem of fetching data from web page using Arduino Uno and ESP8266

Project goal is to control a relay over web. I made a php page that receives the post data from Arduino then store the values sent into a mysql database (which is the relay status now). Now I need to ...
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2answers
1k views

Arduino reads hc-05 device connecting status

Hello I want to get an arduino get status of bluetooth hc 05 if connect with device or not . I'm trying by myself and search on internet website but I can't find useful things.
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2answers
6k views

HC-05 Bluetooth module doesn't read data correctly from my Android phone

I have made a home automation project where am using an Arduino Uno and HC-05 Bluetooth module and an Android app. I did everything properly but when I send commands from my Android app it works ...
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0answers
76 views

reference to 'File' is ambiguous. Why am I getting this error?

The program is supposed to take photo and store the picture into the SD card with the timestamp. My Program Code: #include <SdFat.h> #include <Adafruit_VC0706.h> #include <SPI.h> #...
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1answer
110 views

HLW8032 UART sends random data ( Registers Overflow often)

I designed my own version of smart socket just like the Sonoff with power metering chip HLW8032. And when I read the data in ESP-12F the data doesn't have a fixed format. To troubleshoot the issue, I ...
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0answers
33 views

ESP8266 crashing with blue LED always on and without the word “w_flash” on startup

When using Arduino SoftwareSerial with ESP8266, the blue led turns always on every time I reset the circuit by power. The only way to take the ESP working again is reflashing with the SDK 2.2.1, AT ...
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2answers
50 views

Serial.availableForWrite versus Serial.flush

Is there a difference between the following two line codes? while (Serial.availableForWrite <= 0) {} versus Serial.flush() Thanks!
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1answer
42 views

SIM800l doesn't respond on arduino micro

I want my Arduino Micro to interact with my SIM 800 L module. But unfortunately nothing happens, may you can help me figure out where I made a mistake. Here's my wiring: Summary of my wiring: ...
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1answer
248 views

vk2828u7g5lf GPS module over SoftwareSerial

So my goal was simple. Trying to get a GPS speed, and show it on a display (later use it to control a stepper motor). I am using the vk2828u7g5lf GPS module from Banggood, which after days of ...
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1answer
198 views

Create New Serial Class Inheriting from Stream

How should I inherit from Stream, for creating a new class MySerial able to be initialized from a Stream0 instance?. The error so far is: "cannot declare variable 'mySerial' to be of abstract type '...
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1answer
1k views

Laser emitter + receiver for Arduino (Arduino to Arduino communication)

I'm working on a project using 2 Arduinos connected to 2 computers to demo Serial to Serial communication. We're using Arduino Uno connected to the computer via Serial and software serial for inter-...
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2answers
728 views

How will Arduino communicate wirelessly through XBee?

I am using one XBee S2 configured as coordinator API attached to my laptop and one XBee S2 attached to an Arduino Uno that is configured as a router AT. I want to generate an alarm on LabVIEW as I ...
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2answers
1k views

how to make GPRS/GSM SIM900 shield work with gps neo-6M module using Arduino UNO board

I'm a beginer to arduino program.i will like to make a program that will send latitude and longitude on my mysql database.so since 3 days i try to learn how to use all this material(GPRS/GSM SIM900 ...
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0answers
852 views

HC-05 and HC-06 Bluetooth not communicating well

I am trying to communicate between two Arduino UNO. One has a HC-05 which is configured as master, the other Arduino has HC-06 which is the slave. What I want to achieve is to be able to print a ...
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1answer
65 views

Problem with powering ublox NEO-6M GPS module

Firstly, I'd like to mention that I'm a beginner. This is the first time I've worked with a GPS module. The serial monitor is completely empty when I upload the following code to my circuit: #...
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0answers
51 views

Send ECG data using buffer in real time to the server without using delay

I am trying to make a ECG monitoring system using Arduino, GSM and ECG sensor which data should be sent to the private server in real time. Those data are then collected via Matlab on the remote ...
1
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1answer
253 views

Cannot receive data from GPS SD Shield V2-B

I am attempting to receive GPS data from a GPS SD Shield V2-B purchased from maplin. I have attempted the very simple sketch they provide on their website linksprite.com. I have also tried following a ...
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0answers
171 views

Using Parallax VPN1513 GPS Smart Module with External Antenna and Ruggeduino

I am using a Ruggeduino for a project involving an autonomous vehicle, and I need GPS capability in it. I am using the "VPN1513 GPS Smart Module with External Antenna" from Parallax (https://www....
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1answer
714 views

How to communicate with GPS SIM900a without Serial Monitor

I am fairly new to Arduino. I was working on a project where I use a GSM SIM900a modem interfaced with an Arduino. The AT commands are sent via the Arduino to the GSM Modem. The problem, however, is ...
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0answers
1k views

Arduino code issue (using Bluetooth and Rfid technology)

I am building a device that communicates with my Android phone. I know that my App works but my Arduino code seems to have a problem. So I have made a smaller programm and everything works fine there. ...
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0answers
28 views

Arduino Nano and neoSWserial library

So I've been playing with neoSWserial library on Arduino Nano. I've been using the example interrupt code: #include <NeoSWSerial.h> NeoSWSerial ss( 4, 3 ); volatile uint32_t newlines = 0UL; ...
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1answer
71 views

Not able to control digital pins using commands sent via HC-05 module

I am trying to control the LED on pin13 using the below code but it's not working. With this code I am able to print to the Serial Monitor but the code has no effect on the any of the digital pins. I ...
2
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1answer
122 views

Accelerometer (I2C) and Fona Shield (software serial) won't work together

I am using a Fona 808 shield with an Arduino Uno and the LSM303 accelerometer. The accelerometer is connected via I2C and the Fona uses software serial. My project requires the accelerometer to be ...
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0answers
25 views

RGB Matrix flickering every ~5 seconds when paired with SoftwareSerial

I'm running an RGB matrix through an Uno and trying to run it alongside SoftwareSerial so that I can integrate an ESP8266 into things. The trouble is, when I start introducing the SoftwareSerial into ...
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1answer
65 views

How to use 2 serial port when WifiEsp library uses one of both

I try without success to receive datas from DataPort and transmit them to my computer via WifiPort, using ESP8266 wifi module. Each second, serial datas income on DataPort from another device. ...
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1answer
56 views

Using software Serial for Adafruit Thermal library and more general cpp question

I'm working on a proof of concept for using the Adafruit_Thermal printer library with an ATTiny85. The ATTiny85 does not come with hardware serial capability, so I started looking into using ...
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0answers
32 views

Why sometimes parsed data is null in WiFiEsp?

I'm setting up web server with args. As host.com/?pin=9. I parsed the response by indexOf and substring functions. In first connection response has been successfully parsed and number has been parsed ...
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1answer
46 views

Buffer overflow error in ESP8266_SoftwareSerial library

I am running into buffer issues when running the Firmware.ino example here. The output from my Arduino serial log on baudrate 115200 (I put the ESP on baudrate 9600): Begin 01:17:15.538 -> ...
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0answers
44 views

Can HC-05 Continuously Stream data and read data at the same time?

I am trying to have my Arduino Stream an Analog Signal using Bluetooth Module (HC-05) while being able to read commands from another Micro-controller using the same Bluetooth Module. Currently, I am ...
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2answers
1k views

tinygps abnormal behaviour with EM408 gps

I have an Arduino Duemilanove and em408. My code is this: #include <TinyGPS.h> #include <SoftwareSerial.h> #define GPS_RX_PIN 2 #define GPS_TX_PIN 3 TinyGPS gps; SoftwareSerial ss(...
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1answer
48 views

Reading from EEPROM and combining

I'm trying to read from the EEPROM and combine the information and send it out over SoftwareSerial using write() function but i'm getting the following error error: invalid operands of types 'const ...