Keywish Hummer-Bot, Instruction Manual

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The data means the specific control value of a car, such as speed, angle.
The checksum is the xor result of each data bit.
The tail is the end part of the packet. When receiving this data, it means that the packet has been sent, the
next packet is ready to be received. We uniformly designate it as 0x55. For example, a complete packet can
be such as "AA 01 01 06 50 00 58 55", in which:
"06" is the "device type", such as motor, LED, buzzer and so on. The 06 here refers to the transmission
speed, and the 05 refers to the transmission direction.
"50 (or 0050)" is the controlling data, 0x50 in hexadecimal is 80 when converted to binary, which means the
speed value is 80. If the data is 05, it means the controlling direction, that is 80 degrees (forward).
"0058" is the check sum, that is, 0x01+0x01+0x06+0x50=0x58.
"55" is the tail of the protocol, indicating the end of data transmission.
typedef enum
{
E_BATTERY = 1 ,
E_LED = 2 ,
E_BUZZER = 3 ,
E_INFO = 4 ,
E_ROBOT_CONTROL = 5 ,
E_ROBOT_CONTROL_SPEED = 6 ,
E_TEMPERATURE = 7 ,
E_IR_TRACKING = 8 ,
E_ULTRASONIC = 9 ,
E_VERSION = 10 ,
E_UPGRADE = 11 ,
} E_CONTOROL_FUNC ;