A working software serial (SoftwareSerial or PostNeoSWSerial) example?

[dmikushin]

Dear all, thank you for all your great work! 👍

Whatever I try on the LGT Nano style, the Software Serial is not operational. I try SoftwareSerial or PostNeoSWSerial, nothing works. The following code is able to send test strings to the hardware serial only:

#include <SoftwareSerial.h>
//#include <PostNeoSWSerial.h>

const uint8_t RX = PB1;
const uint8_t TX = PB2;

SoftwareSerial swSerial(RX, TX);
//PostNeoSWSerial swSerial(RX, TX);

void setup() {
  Serial.begin(115200);

  while (!Serial)
  {
    // Wait for serial port to connect. Needed for native USB port only
    delay(100);
  }

  // Define pin modes for TX and RX
  pinMode(RX, INPUT);
  pinMode(TX, OUTPUT);
  swSerial.begin(9600);
}

void loop() { // run over and over
  Serial.println("tick");
  swSerial.println("tick");
  /*while (swSerial.available()) {
    Serial.write(swSerial.read());
  }*/
  while (Serial.available()) {
    swSerial.write(static_cast<char>(Serial.read()));
  }
  delay(100);
}

I think the software serial functionality is broken.

Could someone please kindly share their working software serial example, and the corresponding LGT8FX platform version? Which Nano pins are capable to do software serial RX/TX?

[wollewald]

I guess you want to use pins 9 and 10 as SoftwareSerial pins. Then you need to use these numbers:

SoftwareSerial swSerial(9, 10);

PB1 and PB2 are pins 9 and 10, but if you use PB1 and PB2 in your code, it just means 1 and 2.

[dmikushin]

Thank you very much, @wollewald 👍 . So I've confused Arduino pin numbers with Port/Pin numbers. When I return to Arduino coding, I always run into the same confusion.

[dmikushin]

Although with SoftwareSerial it works now, with PostNeoSWSerial I still get this:

[dbuezas]

That looks like there could be a baud rate, parity, polarity or stop bit configuration mismatch

[dmikushin]

@dbuezas , right, the issue has been identified as related to 32 MHz clock setting. Thanks!

hexaedron/PostNeoSWSerial#1