Serial Communication - How to read large bytes of data

Projects Networking, Protocols, and Devices
11

Dear Robin,

I updated my code in such a way that no "read data" happens outside recvWithStartEndMarkers().

However the problem remains, I got the exact same output as shown in post#6.
I suspect that there are other bugs in the code...

#include <Arduino.h>   // required before wiring_private.h
#include "wiring_private.h" // pinPeripheral() function

Uart Serial2 (&sercom1, 11, 10, SERCOM_RX_PAD_0, UART_TX_PAD_2);

const int numChars = 5000;
char receivedChars[numChars];

boolean newData = false;
short k = 0;

void SERCOM1_Handler()
{
	Serial2.IrqHandler();
}

void setup() {
	// initialize serial communication at 115200 bits per second: Serial1 is pin 0 and 1;
	Serial1.begin(9600);
	Serial2.begin(9600); 
	Serial1.println("<Arduino is ready>");
	// Assign pins 10 & 11 SERCOM functionality
	pinPeripheral(10, PIO_SERCOM);
	pinPeripheral(11, PIO_SERCOM);
}

void loop() {
  
	for (k;k<1;k++)
	{ 
                Serial2.println("+++");   
		Serial2.println("rdlfind 2 -3 -1");
	}		
    recvWithStartEndMarkers();
    showNewData();
}


void recvWithStartEndMarkers() {
    static boolean recvInProgress = false;
    static int ndx = 0;
    char startMarker = '<';
    char endMarker = '>';
    char rc;
 
 // if (Serial2.available() > 0) {
    while (Serial2.available() > 0 && newData == false) {
        rc = Serial2.read();

        if (recvInProgress == true) {
            if (rc != endMarker) {
                receivedChars[ndx] = rc;
                ndx++;
                if (ndx >= numChars) {
                    ndx = numChars - 1;
                }
            }
            else {
                receivedChars[ndx] = '\0'; // terminate the string
                recvInProgress = false;
                ndx = 0;
                newData = true;
            }
        }

        else if (rc == startMarker) {
            recvInProgress = true;
        }
    }
}

void showNewData() {
    if (newData == true) {
        Serial1.print("This just in ... ");
        Serial1.println(receivedChars);
        newData = false;
    }
}