A9G + Xiao ESP32-C3 problem with sending SMS

[anonymousexd]

I am testing AT commands on A9G using Xiao ESP32-C3. I wanted to make a call as well as to send SMS. I can call, no problem with that (using ATD+"your number") but my problem is that, I cannot send sms it only shows > in the serial monitor but I cant type anything after that. And it suddenly shows COMMAND NO RESPONSE!

Here's the code I am using

#include "WiFi.h"

void setup() {

  Serial.begin(115200);                      // For Serial Monitor
  Serial1.begin(115200, SERIAL_8N1, D0, D1); // For A9G Board

  // Making Radio OFF for power saving
  WiFi.mode(WIFI_OFF);  // WiFi OFF
  btStop();   // Bluetooth OFF
  
}

void loop() {

  if (Serial1.available())    // read from A9G and send to Arduino Serial Monitor
  Serial.write(Serial1.read());

  if (Serial.available())     // Keep reading from Arduino Serial Monitor and send to A9G
  Serial1.write(Serial.read());

}

I send this following AT commands in order

AT+CMGF=1
AT+CNMI=2,2,0,0,0
AT+CMGS=+"your number"
message to be sent: Hello! This message is from A9G on Xiao ESP32

I also tried it this way but I wasn't able to see the response

#include "WiFi.h"

void setup() {

  Serial.begin(115200);                      // For Serial Monitor
  Serial1.begin(115200, SERIAL_8N1, D0, D1); // For A9G Board

  // Making Radio OFF for power saving
  WiFi.mode(WIFI_OFF);  // WiFi OFF
  btStop();   // Bluetooth OFF
  
}

void loop() {

  Serial1.println("AT+CMGF=1"); // Set GSM Module in Text Mode
  delay(1000);
  Serial1.println("AT+CNMI=2,2,0,0,0"); // New SMS MeSerial1age Indications
  delay(1000);
  Serial1.println("AT+GPS=1"); // Enable GPS
  delay(1000);
  
  Serial1.println("AT+CMGS=\"+1234567890\"\r"); // Replace +1234567890 with your number
  delay(1000);
  Serial1.println("Hello! This message is from A9G on Xiao ESP32");
  delay(5000);
  // Serial1.println((char)26); // ASCII code of CTRL+Z
  Serial1.write(0x1A);
  delay(1000);
}

I tried the combination of the code and this is what I got

ps. I already replaced the number where to send the SMS

Thank you for the help in advance!

[pert]

I moved your topic to an appropriate forum category @anonymousexd.

In the future, please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

This is an important part of responsible forum usage, as explained in the "How to get the best out of this forum" guide. The guide contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.

[anonymousexd]

Sorry for that, I'm a bit in a rush to have this post. I'll make sure to do it right next time!