 // Version V1.01 (15/03/2017) : ACLK divider is a parameter, to cope with both units:
 //   - 12MHz (prototypes) or
 //   - 16MHz (serial production)
+//
+// Version V1.02 (18/01/2018) : added a test step for RS422 loopback check
 //
 // This program is distributed in the hope that it will be useful, but without any
 // warranty; without even the implied warranty of merchantability or fitness for a

  Serial.println();
  if (rsOk) Serial.println(F("Test of loop back of RS TX to RX is:\tPASSED"));
  else      Serial.println(F("Incorrect loop back of RS TX to RX :("));
  
  Serial.println(F("\t\tThat's all folks !"));
}

  else                    Serial.println(F("Incorrect loop back of DOUT to AIN3 :("));
  Serial.println();
  
  // JPP V1.02 (begin ...)
  // ---------------------------------------------------------------------------
  // Test of RS422 TX(H/L) and RS422 RX(H/L) signals
  // RS422 TX(H/L) is to be looped back to RS422 RX(H/L)
