* master:
Fixed issue reported by lucari Despite the values set for F0-4, a packet with all fields set to zero is received. The problem seems to be related to NrmaDcc.cpp and a hidden 'break' statement at line 484. This should be swapped with the #endif on the next line. The result is that when a Speed packet is processed, it drops through to the next case statement and sends an empty DCCFunc command.
Added Iowa Scaled Engineering ARD-DCCSHIELD example
fixed call-back function void notifyDccFunc and changed version to 1.2.1
Despite the values set for F0-4, a packet with all fields set to zero is received. The problem seems to be related to NrmaDcc.cpp and a hidden 'break' statement at line 484. This should be swapped with the #endif on the next line. The result is that when a Speed packet is processed, it drops through to the next case statement and sends an empty DCCFunc command.