#include <SoftwareSerial.h>
SoftwareSerial mySerial(0, 1);
void setup()
{
mySerial.begin(9600); // Setting the baud rate of GSM Module
Serial.begin(9600); // Setting the baud rate of Serial Monitor (Arduino)
delay(100);
}
void loop()
{
if (Serial.available()>0)
SendMessage();
if (mySerial.available()>0)
Serial.write(mySerial.read());
}
void SendMessage()
{
mySerial.println("AT+CMGF=1"); //Sets the GSM Module in Text Mode
delay(1000); // Delay of 1000 milli seconds or 1 second
mySerial.println("AT+CMGS=\"+1876xxxxxxx\"\r"); // Replace x with mobile number
delay(1000);
mySerial.println("I am SMS from GSM Module");// The SMS text you want to send
delay(100);
mySerial.println((char)26);// ASCII code of CTRL+Z
delay(1000);
}
I am trying to send a sms using SIM 800 RPI GSM ADD-on v2.3 module through the arduino platform however everything I try fails. Please assist and explain where i am going wrong. Thank you. My code is above. Thanks
You are missing a carriage return in "AT+CMGF=1".
Change "AT+CMGF=1" to "AT+CMGF=1\r"
Although having delays between command works and suffices the purpose but is not recommended.
It is preferable to catch and analyze the messages returned by the SIM800 especially in case of error has occurred.
Related
I have a few questions as to why my input isn't behaving correctly. I have 2 functioning scripts I've used:
ESP32 to Xbee using UART2, I open a serial connection to Xbee3 and type "+++" or AT Commands "ATID" and I am able to view to xbee's response via serial monitoring, works fine
Samsung Phone Serial App to ESP32 using Bluetooth, I'm also able to connect to the phone and type commands from phone to terminal and terminal to phone, works fine.
code for item 1:
//Arduino IDE
//ESP32 to Xbee UART2
//Select your modem:
#define TINY_GSM_MODEM_XBEE
// Set serial for debug console (to the Serial Monitor, speed 115200)
#define SerialMon Serial
// Set serial for AT commands (to the module)
// Use Hardware Serial on Mega, Leonardo, Micro
HardwareSerial SerialAT(2);
#define TINY_GSM_DEBUG SerialMon
void setup() {
// put your setup code here, to run once:
// Set console baud rate
SerialMon.begin(115200);
SerialAT.begin(9600);
delay(1000);
SerialAT.print("+++"); while (SerialAT.available()) {SerialMon.write(SerialAT.read());}
delay(1000);
}
void loop() {
// put your main code here, to run repeatedly:
// Access AT commands from Serial Monitor
SerialMon.println(F("***********************************************************"));
SerialMon.println(F(" You can now send AT commands"));
SerialMon.println(F(" Enter \"AT\" (without quotes), and you should see \"OK\""));
SerialMon.println(F(" If it doesn't work, select \"Both NL & CR\" in Serial Monitor"));
SerialMon.println(F("***********************************************************"));
while(true) {
if (SerialAT.available()) {
delay(1000);
SerialAT.println("ATID");
SerialMon.write(SerialAT.read());
}
if (SerialMon.available()) {
SerialAT.write(SerialMon.read());
}
delay(0);
}
}
Code for item 2:
//This example code is in the Public Domain (or CC0 licensed, at your option.)
//By Evandro Copercini - 2018
//
//This example creates a bridge between Serial and Classical Bluetooth (SPP)
//and also demonstrate that SerialBT have the same functionalities of a normal Serial
#include "BluetoothSerial.h"
#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif
BluetoothSerial SerialBT;
#define TINY_GSM_MODEM_XBEE
#define SerialMon Serial
HardwareSerial SerialAT(2);
#define TINY_GSM_DEBUG SerialMon
void setup() {
SerialMon.begin(115200);
SerialAT.begin(9600);
SerialBT.begin("ESP32testBLMfalse"); //Bluetooth device name
Serial.println("The device started, now you can pair it with bluetooth!");
}
void loop() {
// Access AT commands from Serial Monitor
if (Serial.available()) {
SerialBT.write(Serial.read());
}
if (SerialBT.available()) {
Serial.write(SerialBT.read());
}
delay(1000);
}
My issue was when I tried to combine these. See, I wanted to know if it was possible to open a Bluetooth connection with the ESP32 and send the AT commands from the phone app to the XBEE connected to it on UART2. This is what I'm currently doing. The command looks like it sends fine, but my serial output on reads:
"
The device started, now you can pair it with bluetooth!
10:44:04.546-> OK????????????????????????????????????????????????????????????????????????????????????
"
not sure if it's due to the bit rate, let me know if anyone can assist.
Thank you
#include "BluetoothSerial.h"
#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif
BluetoothSerial SerialBT;
#define TINY_GSM_MODEM_XBEE
#define SerialMon Serial
HardwareSerial SerialAT(2);
#define TINY_GSM_DEBUG SerialMon
void setup() {
SerialMon.begin(115200);
SerialAT.begin(9600);
SerialBT.begin("ESP32testBLMfalse"); //Bluetooth device name
delay(1000);
SerialAT.print("+++"); while (SerialAT.available()) {SerialMon.write(SerialAT.read());}
delay(1000);
Serial.println("The device started, now you can pair it with bluetooth!");
}
void loop() {
// Access AT commands from Serial Monitor
if (SerialBT.available()) {
delay(1000);
Serial.write(SerialAT.read()); //send phone input to xbee
}
if (SerialMon.available()) {
SerialAT.write(SerialBT.read()); //send xbee output to phone
SerialAT.write(SerialMon.read()); //send xbee output to serial monitor
}
delay(1000);
}
I was expecting
Samsung phone [input] --BlueTooth--> ESP32 --UART2-> Xbee
Xbee [output] --UART2--> ESP32 serial monitor --BLueTooth-->Samsung phone
I'm trying to send data from Arduino UNO to NodeMCU via UART.
What I want to do is that when Arduino UNO sends "on" String to the NodeMCU, NodeMCU lights up its builtin LED, when "off" - it turns off.
I send data from Arduino UNO via standard Serial.println (). On the NodeMCU I use the SoftwareSerial library. I assigned rx and tx to pins D7 and D8 accordingly. Serial ports on Arduino(standard) and NodeMCU(SoftwareSerial) are set at 9600 baud rate.
Standard Serial port (USB) of NodeMCU is set to 115200.
I send the string that I receive from the Arduino to the standard serial port of the node (connected to usb)
The question is:
On the standard port of NodeMCU, which I view through the Arduino IDE, messages coming from the arduino are displayed, and displayed correctly (those that were sent), but the NodeMCU does not want to accept them in conditional statements and light up my LED. Why?
At the same time, when I remap the virtual UART to its original pins (connected to USB, GPIO3 and GPIO1, and send the same messages via usb through the COM port view in the Arduino IDE, the LED turns on and off as I programmed it.
Do you have any ideas why this is happening?
By the way, I do not lower voltage coming from Arduino RX and TX pins from 5V to 3.3V, but since messages are recived coorectly, I don't think that this is causing a problem.
Here's my code:
Arduino:
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
}
void loop() {
// put your main code here, to run repeatedly:
Serial.println("on");
delay(1000);
Serial.println("off");
delay(1000);
}
NodeMCU:
#include <SoftwareSerial.h>
SoftwareSerial s(D7,D8);//rx,tx
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
s.begin(9600);
pinMode(D4,OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
String str = s.readStringUntil('\n');
Serial.println(str);
if(str == "on"){
digitalWrite(D4, HIGH);
}
if(str=="off"){
digitalWrite(D4, LOW);
}
}
Screenshot of COM4:
Screenshot of COM4:
UPD: I tried using sending 1 or 0 as int value via Serial.write() and s.read() and it works, maybe the prolem is in String type somehow
You Use İt Maybe Work
#include <SoftwareSerial.h>
String text = "";
SoftwareSerial s(D7,D8);//rx,tx
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
s.begin(9600);
pinMode(D4,OUTPUT);
}
void loop() {
// put your main code here, to run repeatedly:
String str = s.readStringUntil('\n');
text = str
Serial.println(text);
if(text == "on"){
digitalWrite(D4, HIGH);
}
if(text =="off"){
digitalWrite(D4, LOW);
}
}
I've been working on a project and want an Arduino uno with an HM-19 Bluetooth module to repeatedly send an AT command to the module then print the modules result in the serial monitor. I'm having trouble and it is only returning the number 53 and not the response 'OK'. Thanks for any insight you're able to give.
//import Software Serial to communicate over comms port
#include <SoftwareSerial.h>
// 0 and 1 are the tx and rx pins ans should be where the hm-19 is
// may be 0,1 instead
SoftwareSerial HM19(1,0);
void setup() {
// begin serial monitor and wait for something(?, found online)
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
//tell user it's started
Serial.println("Started");
//I believe this begins the monitor for the HM-19
HM19.begin(9600);
delay(1000);
}
void loop() {
// give user status report
delay(1000);
Serial.println("Sending an AT command...");
// need to find if this is how you send an AT command (currenty send 'AT' as a test)
HM19.write("AT\r");
delay(30);
//wait for the HM19 to respond then print it out
int HMresponse = 0;
if (HM19.available()){}
HMresponse = HM19.read();
Serial.println(HMresponse);
}
I have the ESP8266 connected to my Arduino Uno. With a blank sketch I can use Serial Monitor to connect it to my wifi network using these commands
AT+IPR=9600
AT+CWMODE=1
AT+CWJAP="SSID_HERE",""
It get's an ip and everything. But now I want my sketch to just do this using this code
#include <SoftwareSerial.h>
#define SSID "SSID_HERE"
void setup(){
Serial.begin(9600);
Serial.setTimeout(5000);
delay(1000);
}
boolean connectWiFi()
{
// connect
Serial.println("AT+CWMODE=1");
Serial.println("AT+CWJAP=\"SSID_HERE\",\"\"");
delay(2000);
if(Serial.find("OK"))
{
Serial.println("AT+CIFSR");
Serial.flush();
delay(1000);
return true;
}
else
{
// Can not connect to the WiFi.
return false;
}
}
But it doesn't work.. The Serial.println shows up in the Serial Monitor, but the ESP8266 doesn't seem to respond. What am I missing?
AT -commands ends with carriage return, so you need to add '\r' to every command you print.
In your code lines looks like:
Serial.println("AT+CWMODE=1\r");
Serial.println("AT+CWJAP=\"SSID_HERE\",\"\"\r");
Serial.println("AT+CIFSR\r");
Reference: https://en.wikibooks.org/wiki/Serial_Programming/Modems_and_AT_Commands/Special_Commands_and_Character_Sequences
The problem here is that you are trying to use pins 0 & 1 for the serial comms, well its part of the problem.. Because the arduino uses serial as well, it for me is only really good to use pins 0 & 1 for serial when i've grounded the reset pin on the arduino. This turns the arduino into a dummy device.
You can use something like software serial and two different pins instead, this way you will not interfere with the hardware serial of the arduino.
Also just to note, the below example will barely work.. For some it will for others it wont.. The problem here is that software serial does not really work / run at 115200..
You can change baud rate via AT+UART_DEF=19200,8,1,0,0 which will also disable flow control, then use software serial with a different speed mySerial.begin(19200)
Using Serial.println("TEXT") will send the line returns for you, so no need to add them unless you use Serial.print("TEXT\r\n")
DO NOT USE: AT+IPR= as this will brick it and require a reflash
#include <SoftwareSerial.h>
SoftwareSerial mySerial(11, 10); // RX, TX
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(115200);
pinMode(11, INPUT);
pinMode(10, OUTPUT);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.println("ARDUINO: Starting");
mySerial.begin(115200);
Serial.println("ARDUINO: Sending AT Command");
mySerial.println("AT");
}
void loop() { // run over and over
if (mySerial.available()) {
Serial.write(mySerial.read());
}
if (Serial.available()) {
mySerial.write(Serial.read());
}
}
Following URL will be appear my GSM module and it is included data sheet of the SIM900 module.
http://www.pennybuying.com/gsm-gprs-module-sim900-development-board-lbs-mms-support-arduino-uno-ttl-rs232.html
I have connected only RX,TX,GND and PWR pin between GSM module and Arduino mega board.
Sending a SMS is work properly but receiving SMS is doesn't work.
This is the Arduino Code of sending sms - (Reference - http://tronixstuff.com/2014/01/08/tutorial-arduino-and-sim900-gsm-modules/)
#include <SoftwareSerial.h>
SoftwareSerial SIM900(15,14);
char incoming_char=0;
void setup()
{
Serial.begin(19200); // for serial monitor
SIM900.begin(19200); // for GSM shield
SIM900power(); // turn on shield
delay(20000); // give time to log on to network.
SIM900.print("AT+CMGF=1\r"); // set SMS mode to text
delay(100);
SIM900.print("AT+CNMI=2,2,0,0,0\r");
// blurt out contents of new SMS upon receipt to the GSM shield's serial out
delay(100);
}
void SIM900power()
// software equivalent of pressing the GSM shield "power" button
{
digitalWrite(9, HIGH);
delay(1000);
digitalWrite(9, LOW);
delay(7000);
}
void loop()
{
// Now we simply display any text that the GSM shield sends out on the serial monitor
Serial.println("loop");
if(SIM900.available() > 0)
{
Serial.print("waiting");
incoming_char=SIM900.read(); //Get the character from the cellular serial port.
Serial.print(incoming_char); //Print the incoming character to the terminal.
while(1){};
}
}
Try to add SIM900.print("AT+CMGD=1,4\r"); in your setup(). I faced similar problems and the reason was that sim-card memory for messages is full.
You wont get any messages or notification if there is no space in sim memory!
So your setuo loop would look like this
void setup()
{
Serial.begin(19200); // for serial monitor
SIM900.begin(19200); // for GSM shield
SIM900power(); // turn on shield
delay(20000); // give time to log on to network.
SIM900.print("AT+CMGF=1\r"); // set SMS mode to text
delay(100);
SIM900.print("AT+CMGD=1,4\r"); // Deletes all SMS saved in SIM memory
delay(100);
SIM900.print("AT+CNMI=2,2,0,0,0\r");
// blurt out contents of new SMS upon receipt to the GSM shield's serial out
delay(100);
}