View source for Axivity WAX3

The WAX3 is a wireless accelerometer that talks MiWi over 802.15.4.
Source code/schematics/etc. are available at  [http://code.google.com/p/openmovement/ Open Movement's Google Code]


{| border="1"
! Start Byte
! Length (bytes)
! Description
! Format
|-
| 0
| 1
| Report Type
| Always 0x12 = USER_REPORT_TYPE
|-
| 1
| 1
| Report ID
| Always 0x78 (ASCII 'x')
|-
| 2
| 2
| Device ID
| 
|-
| 4
| 1
| Device Status
| Bit 0 = battery warning, bits 1-7 = reserved
|-
| 5
| 2
| Analog Sample
| Top 6 bits are measurement info, bottom 10 are measurement
|-
| 7
| 1
| Accelerometer Info
| Top two bits is G-range: 00=±16g, 01=±8g, 10=±4g, 11=±2g<br>next two bits is format: 0=10-bit raw -> 3x10-bit + 2, 2=signed 16-bit<br>lowest four bits is the rate code: frequency = 3200 / (1 << (15-(n & 0x0f)))
|-
| 8
| 2
| Sample Sequence Number
| Resets on sleep
|-
| 10
| 1
| Number of samples left to transmit after this packet
| 0xFF = 255 or more
|-
| 11
| 1
| Number of samples in this packet
|
|-
| 12
| ???
| Sample Data
| 
|}

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