Currently, I get a value every second from the gps sensor. The received value is being transmitted to the mobile phone through Bluetooth communication. At the same time, I want to send a certain price to Arduino from my cell phone. But this doesn't work. I thought the reason was that Bluetooth communication could not be sent and received at the same time. I want to find out if what I thought is right and how to solve it.
Two way Bluetooth traffic is common enough, so it is probably just a code problem, and likely a simple one, but who would ever know?
#include <TinyGPS.h>
TinyGPS gps;
double current_latitude, current_longitude;
double destination_latitude, destination_longitude;
string line="";
void setup() {
Serial.begin(9600);
Serial2.begin(9600); //bluetooth(HC-06)
Serial1.begin(9600); // gps sensor(Neo-7M)
}
void loop() {
gps_out();
bt_in();
}
void gps_out(){
bool newData = false;
unsigned long chars;
unsigned short sentences, failed;
for (unsigned long start = millis(); millis() - start < 1000;)
{
while (Serial1.available())
{
char c = Serial1.read();
//Serial.write(c);
if (gps.encode(c))
newData = true;
}
}
if (newData)
{
float flat, flon;
unsigned long age;
gps.f_get_position(&flat, &flon, &age);
Serial.print("LAT=");
Serial.print(flat == TinyGPS::GPS_INVALID_F_ANGLE ? 0.0 : flat, 5);
Serial.print(" LON=");
Serial.println(flon == TinyGPS::GPS_INVALID_F_ANGLE ? 0.0 : flon, 5);
Serial2.print(flat == TinyGPS::GPS_INVALID_F_ANGLE ? 0.0 : flat, 5);
Serial2.print(",");
Serial2.print(flon == TinyGPS::GPS_INVALID_F_ANGLE ? 0.0 : flon, 5);
delay(1000);
}
}
void bt_in(){
if(Serial2.available()) {
line=Serial2.readStringUntil('\n');
String destination_latitude = line.substring(0, 8);
String destination_longitude = line.substring(8);
Serial.print("lat:");
Serial.print(destination_latitude);
Serial.print(",");
Serial.print("long:");
Serial.println(destination_longitude);
}
Currently, I get a value every second from the gps sensor. The received value is being transmitted to the mobile phone through Bluetooth communication. At the same time, I want to send a certain price to Arduino from my cell phone. But this doesn't work. I thought the reason was that Bluetooth communication could not be sent and received at the same time. I want to find out if what I thought is right and how to solve it. I use arduino mega
You do not need to start a new thread all the time, stick with this one now and delete the first one.
Please refrain from all that unnecessary whitespace, it is just a bloody insult.
Clearly, there is nothing wrong with your transmission code, or the wiring. Your bt_in subrtn is not too familiar but may be quite kosher - for a while. Note that you are using capital S strings therein but, in line 5, you are defining line as string. Using capital S Strings is a bad idea as it clogs up memory, even on a Mega, but I don't think it is the root cause of your problem.
this may be of assistance.
Topics merged
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Thanks in advance for your cooperation.
I want to send a certain price to Arduino from my cell phone. But this doesn't work
What is the sending app on the phone? Is it configured to send a message terminated with '\n'?
Have you confirmed that without sending any gps data out, you can read the destination lat/long values with your bt_in()?
If you send the outgoing message every 10 seconds, can you read the incoming message between transmissions?
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