normalne mi funguje komunikace - posilani a prijem SMS pomoci shieldu SIM900 pripojeneho k Arduino UNO R3. Pokud pouziju stejny shield, stejny kod, stejne piny na Arduinu R4, tak mi shield sms neprijima ani neodesila. Nevite kde by mohl byt zakopany jednorozec? Diky
Priklad kodu:
Kód: Vybrat vše
//Program to send and receive SMS using SIM900A, Arduino and a terminal
//https://ee-diary.blogspot.com
#include <SoftwareSerial.h>
//configure software serial on Arduino pin 8 and 7 to communicate with SIM900
SoftwareSerial sim900(7,8); //Rx, Tx
void setup()
{
//configure serial communication with terminal
Serial.begin(9600);
//configure serial communication with SIM900A GSM module
sim900.begin(19200);
Serial.println("Initializing...ok");
delay(1000);
Serial.println("Press 's' to send and 'r' to receive SMS");
}
void loop()
{
if (Serial.available()>0)
switch(Serial.read()){
case 's':
sendSMS();
break;
case 'r':
recieveSMS();
break;
}
}
void serialPrint()
{
delay(500);
while (Serial.available())
{
sim900.write(Serial.read());//send typed text on terminal to SIM900A
}
while(sim900.available())
{
Serial.write(sim900.read());//send received text on SIM900A to terminal
}
}
void sendSMS(){
sim900.println("AT+CMGF=1"); //Sets GSM Module in SMS Mode
serialPrint();
sim900.println("AT+CMGS=\"+XXXXXXXXXXXX\""); // set phone number to send SMS
serialPrint();
sim900.println("From Sim900A: ee-diary");// SMS content
sim900.write(26);// CTRL+Z ascii code to exit SMS mode
serialPrint();
}
void recieveSMS(){
sim900.println("AT+CMGF=1"); //set GSM module in SMS mode
serialPrint();
sim900.println("AT+CNMI=1,2,0,0,0"); //select SMS read mode to show received SMS
serialPrint();
}
