WiT WT901BLECL 5.0 - Communication Protocol and Data Handling; Module to App Data Format

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6.1 Module to APP
Module upload Flag=0x61 (Angle,Angular velocity, Acceleration) data default.
Flag=0x71(Magnetic field, Air pressure and altitude, Port status) need to send the
corresponding register instruction.
Bluetooth upload data: Bluetooth uploads up to 20 bytes per data.
6.1.1 Acceleration, Angular velocity, Angle, Data pack(default)
Packet
header
1Byte
Flag bit
1Byte
axL
axH
…….
YawL
YawH
0x55
Flag
0xNN
0xNN
…….
0xNN
0xNN
Note: 0xNN is a accurate value you received. Data return sequence: Acceleration X Y Z
Angular velocity X Y Z Angle X Y Z , low byte first, high byte last.
Flag = 0x61 Data content: 18Byte is Acceleration, Angular velocity, Angle.
0x55
Packet header
0x61
Flag bit
axL
X Acceleration low 8 byte
axH
X Acceleration high 8 byte
ayL
Y Acceleration low 8 byte
ayH
Y Acceleration high 8 byte
azL
Z Acceleration low 8 byte
azH
Z Acceleration high 8 byte
wxL
X Angular velocity low 8 byte
wxH
X Angular velocity high 8 byte
wyL
Y Angular velocity low 8 byte
wyH
Y Angular velocity high 8 byte
wzL
Z Angular velocity low 8 byte
wzH
Z Angular velocity high 8 byte
RollL
X Angle low 8 byte
RollH
X Angle high 8 byte
PitchL
Y Angle low 8 byte
PitchH
Y Angle high 8 byte
YawL
Z Angle low 8 byte
YawH
Z Angle high 8 byte