Hi,
I am working in my project using arduino uno r3, with the use of SIM7600 CE to receive signal strength, i have a problem.
I have a usb ttl converter called cp2102 and when i just connect it with the SIM 760CE and connect to my computer. I use a program called SScom3.2 to send AT commmands which is sucussful and i recevied what i want.
However, i my project, i am required to send AT commands through arduino and i try for a week and i am still struggling on it. When i do the following set up and type in AT commands in the serial monitor, I do not have any response. What is the problem? Thank you.
I connect the following pins of arduino uno r3 and SIM 7600CE.
SIM 7600 CE . Arduino
TXD 2 (RX arduino)
RXD 3(TX arduino)
VDD 5V
Supply 5V
GND GND
My program is at the below.
/*
Software serial multple serial test
Receives from the hardware serial, sends to software serial.
Receives from software serial, sends to hardware serial.
The circuit:
- RX is digital pin 10 (connect to TX of other device)
- TX is digital pin 11 (connect to RX of other device)
Note:
Not all pins on the Mega and Mega 2560 support change interrupts,
so only the following can be used for RX:
10, 11, 12, 13, 50, 51, 52, 53, 62, 63, 64, 65, 66, 67, 68, 69
Not all pins on the Leonardo and Micro support change interrupts,
so only the following can be used for RX:
8, 9, 10, 11, 14 (MISO), 15 (SCK), 16 (MOSI).
created back in the mists of time
modified 25 May 2012
by Tom Igoe
based on Mikal Hart's example
This example code is in the public domain.
*/
#include <SoftwareSerial.h>
SoftwareSerial mySerial(2, 3); // RX, TX
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
Serial.println("Goodnight moon!");
// set the data rate for the SoftwareSerial port
mySerial.begin(115200);
mySerial.println("Hello, world?");
}
void loop() { // run over and over
if (mySerial.available()) {
Serial.write(mySerial.read());
}
if (Serial.available()) {
mySerial.write(Serial.read());
}
}