SoftwareSerial with ATTiny84 using ATtiny library

Hello rudolf48,

This...

The application program must have the following statements for debug output, for example:

# declaration

#include <TinyDebugSerial.h>
TinyDebugSerial mySerial = TinyDebugSerial(); // PB1 = TX pin

in function setup()

mySerial.begin( 9600 );    // for tiny_debug_serial

in function loop()

mySerial.println( "Testing...");  // debug output

...is not necessary. The Tiny Core already includes an instance of TinyDebugSerial named Serial. This should work...

# in function setup()
  Serial.begin( 9600 );    // for tiny_debug_serial 

# in function loop()
  Serial.println( "Testing...");  // debug output