I want to send user input data from the serial monitor of one Ameba to be received and displayed in another arduino. My code for sender side is as follows:
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <WiFiUdp.h>
char ssid[] = "ESPAP"; // your network SSID (name)
char password[] = "mPass@54321"; //Set the AP's password
unsigned int localPort = 2390; // local port to listen on
#define LOOP_DELAY 100 //how fast we check for new data
#define ARRAYSIZE 255 //size of message array (255bytes)
#define BAUD_RATE 115200 //serial comunication speed
IPAddress remoteIp;
int remoteUDPPort;
char packetBuffer[ARRAYSIZE]; //buffer to hold incoming packet
int arraySize = ARRAYSIZE;
char inData[ARRAYSIZE]; // Allocate some space for the string
char inChar; // Where to store the character read
byte aindex = 0; // Index into array; where to store the character
boolean dataToSend = false;
WiFiUDP Udp;
void setup()
{
delay(100);
Serial.begin(BAUD_RATE);
WiFi.softAP(ssid, password); //Start AP
Udp.begin(localPort);
}
void loop() {
while (Serial.available() > 0) //check for something to read from serial port
{
if (aindex < (arraySize - 1)) // One less than the size of the array
{
inChar = Serial.read(); // Read a character
inData[aindex] = inChar; // Store it
aindex++; // Increment where to write next
inData[aindex] = '\0'; // Null terminate the string
}
dataToSend = true;
}
// if there's data available, read a packet
int packetSize = Udp.parsePacket();
int len = Udp.read(packetBuffer, 255);
if (len > 0) {
packetBuffer[len] = 0;
}
Serial.println(packetBuffer);
if(dataToSend)
{
if(Udp.beginPacket(remoteIp, remoteUDPPort))
{
Udp.write(inData);
Udp.endPacket();
}
dataToSend = false; //set the flag to false, ie only send when you need to.
for (aindex=0; aindex < arraySize; aindex++) //wipe the array
{
inData[aindex] = '\0'; // Null terminate the string
}
aindex = 0; //reset the index
}
delay(LOOP_DELAY); // slow the process doown
}
The portion of code for receiving this data is as follows:
void loop()
{
//check for incoming data via UDP
int packetSize = Udp.parsePacket();
int len = Udp.read(packetBuffer, 255);
if (len > 0){
packetBuffer[len] = 0;
}
Serial.println(packetBuffer);
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The entire code at receiver side is attached as well. The image attached shows the serial string data to be sent from the sending side. pls help, thanks a lot
Ameba RTL8195 is an arduino like microcontroller with wifi capabilities. full details : https://www.amebaiot.com/en/
Im using this to get measurements from 5 sensors and then sending it via UDP to ESP8266 (acting as AP) which displays those readings on its serial monitor and its already achieved. Now, i want to be able to send some text from ESP8266 back to Ameba from the serial monitor of ESP8266. For that im using this part of code on my ESP8266:
while (Serial.available() > 0) //check for something to read from serial port
{
if (aindex < (arraySize - 1)) // One less than the size of the array
{
inChar = Serial.read(); // Read a character
inData[aindex] = inChar; // Store it
aindex++; // Increment where to write next
inData[aindex] = '\0'; // Null terminate the string
}
dataToSend = true;
}
and later sending as :
if(dataToSend)
{
Udp.beginPacket(remoteIp, remoteUDPPort);
Udp.write(inData);
Udp.endPacket();
dataToSend = false; //set the flag to false, ie only send when you need to.
for (aindex=0; aindex < arraySize; aindex++) //wipe the array
{
inData[aindex] = '\0'; // Null terminate the string
}
aindex = 0; //reset the index
}
sal_murd:
Ameba RTL8195 is an arduino like microcontroller with wifi capabilities. full details : Realtek IoT/Wi-Fi MCU Solutions
I can't see any technical information on that link to tell us what hardware is on that device. Like a lot of recent product websites it is just fancy pictures.
OP:
I've tried to read your code
but the indentation
is so piss-poor
that I get a headache
trying to
follow the logic.
It is SO freaking simple to use Tools + Auto Format to remove the illusion that your code was typed by a drunken monkey.
Forget about the serial monitor. That is where the ESP currently sends serial data. THAT is useless information. It's history. You can't retrieve what you sent there, any more than you can retrieve the water you poured down the drain.
What information do you want the ESP to send, and where do you want it sent?
PaulS:
OP:
I've tried to read your code
but the indentation
is so piss-poor
that I get a headache
trying to
follow the logic.
It is SO freaking simple to use Tools + Auto Format to remove the illusion that your code was typed by a drunken monkey.
Forget about the serial monitor. That is where the ESP currently sends serial data. THAT is useless information. It's history. You can't retrieve what you sent there, any more than you can retrieve the water you poured down the drain.
What information do you want the ESP to send, and where do you want it sent?
Usually I dont get any idea from your response, poor, arrogant and mostly nonsense stuff . If you get headache, just leave it; dont become a drunken monkey.
For the ESP, i wanted it to read from the serial interface and send to a remote arduino for what I type in the serial monitor next to the send button, that is very simple English. It has now been accomplished.
