Ant Message

Message Structure

Byte    Name          Length(byte)    Description
0       sync          1               Fixed value of 10100100 or 10100101 (MSB:LSB)
1       MSG LENGTH    1               Number of data bytes in the message
2       MSG_ID        1               Data Type Identifier 0: Invalid; 1..255: Valid Data Type
3..N+2  MSG_CONTENT   N               Content of the message
N+3     CHECKSUM      1               XOR of all previous bytes including the SYNC byte

Message Content

See ant-message-protocol-and-usage "9.3 ANT Message Summary" for details

Device Profiles

See ant+ devices profiles for details about which data can provide each device type.