QRSS mode crash - Funtronics FK-11 hardware

[Olivier-ADLER]

Each time i try to switch to QRSS mode in CLI, i get a crash and reboot after the watchdog timer. If i disable the avr watchdog function, then the AVR crash and does not reboot.

This exhibit using the latest github version. Does not seem related to this particular version because the original firmware i had on the FK-11 board was a couple years younger and had the same crash problem when enabling QRSS.

[Olivier-ADLER]

After checking the code it seems that the serial_qrss_mode() function check only the primary serial port, but on this board there is a secondary serial port. So i think that the while loop of this function never end because it never receive serial input, and trigger the AVR watchdog.

There is two other problems : the reported dit lenght is wrong, forgetting an ascii string to decimal conversion, and after entering the \q command there is no more serial echo, so we do not see the entered value. I'm working on modified code. First compilation checks are confirming my first finds.

[Olivier-ADLER]

Here is a working dirty code modification (dirty because it does not take into account hardware serial ports definitions).

There is still a watchdog reset problem if return is not pressed 4 seconds after the \q command. I will leave that to someone that better master the code. Other problems have been corrected.

`void serial_qrss_mode()
{
byte looping = 1;
byte incoming_serial_byte;
byte numbers[4];
byte numberindex = 0;
String numberstring;
byte error =0;

while (looping) {
if (secondary_serial_port->available() == 0) { // wait for the next keystroke
if (keyer_machine_mode == KEYER_NORMAL) { // might as well do something while we're waiting
check_paddles();
service_dit_dah_buffers();
//check_the_memory_buttons();
}
} else {

  incoming_serial_byte = secondary_serial_port->read();
  secondary_serial_port->write(incoming_serial_byte);
  if ((incoming_serial_byte > 47) && (incoming_serial_byte < 58)) {    // ascii 48-57 = "0" - "9")
    numberstring = numberstring + incoming_serial_byte;
    numbers[numberindex] = incoming_serial_byte;

// primary_serial_port->write("numberindex:");
// primary_serial_port->print(numberindex,DEC);
// primary_serial_port->write(" numbers:");
// primary_serial_port->println(numbers[numberindex],DEC);
numberindex++;
if (numberindex > 2)
{
looping = 0;
error = 1;
}
} else {
if (incoming_serial_byte == 13) { // carriage return - get out
looping = 0;
} else { // bogus input - error out
looping = 0;
error = 1;
}
}
}
}

if (error) {
secondary_serial_port->println(F("Error..."));
while (secondary_serial_port->available() > 0) { incoming_serial_byte = secondary_serial_port->read(); } // clear out buffer
return;
} else {
if (speed_mode != SPEED_QRSS) {
secondary_serial_port->print(F(" Setting keyer to QRSS Mode, Enter \R to leave. Dit length : "));
} else {
secondary_serial_port->print(F(" Changing QRSS speed. Dit length : "));
}
int y = 1;
int set_dit_length = 0;
for (int x = (numberindex - 1); x >= 0 ; x = x - 1) {
set_dit_length = set_dit_length + ((numbers[x]-48) * y);
y = y * 10;
}
if (set_dit_length == 0) {
qrss_dit_length = initial_qrss_dit_length;
} else {
qrss_dit_length = set_dit_length;
}
speed_mode = SPEED_QRSS;
secondary_serial_port->print(qrss_dit_length);
secondary_serial_port->println(F(" seconds"));
}
}`