User Manual
Table Of Contents
- Revision History
- Table of Contents
- Chapter 1 Introduction
- Chapter 2 Wireless Sensing Triple Axis Reference design introduction
- Chapter 3 Sensor Board description
- 3.1 Board overview
- 3.2 A/D conversion of XYZ levels
- 3.3 Power management
- 3.4 ZSTAR Sensor Board hardware overview
- 3.4.1 Analog connections
- 3.4.2 g-select connections
- 3.4.3 BDM (Background Debug Mode) connections
- 3.4.4 Sensor Board schematics
- 3.4.5 Button connections
- 3.4.6 MC13191 to MC9S08QG8 microcontroller interface
- 3.4.7 MC13191 RF interface
- 3.4.8 Clocking options of MC9S08QG8
- 3.4.9 LED indicators connections
- 3.4.10 Power supply
- 3.5 Bill of Materials
- Chapter 4 USB stick board description
- Chapter 5 Software Design
- 5.1 Introduction
- 5.2 SMAC (Simple Media Access Controller)
- 5.3 ZSTAR RF protocol
- 5.4 STAR protocol and ZSTAR extensions (over USB)
- 5.5 Bootloader
- Chapter 6 Application Setup
- Appendix A References
Wireless Sensing Triple Axis Reference design, Rev. 0.9
Freescale Semiconductor 11
Chapter 2
Wireless Sensing Triple Axis Reference design introduction
2.1 Introduction
The Wireless Sensing Triple Axis Reference design (ZSTAR) has been designed as a wireless
complement to the previous STAR (Sensing Triple Axis Reference design) RD3112MMA7260Q demo. A
2.4GHz radio-frequency (RF) link based on the low-cost MC13191 family is used for connection from the
sensor to PC, allowing the visualization of key accelerometer applications.
Figure 2-1ZSTAR demo overview
The demo consists of the two boards:
• Sensor Board (or remote board) containing the MMA7260Q 3-axis accelerometer, S08 family
MC9S08QG8 8-bit microcontroller and the 2.4GHz RF chip MC13191 for wireless communication.
• USB stick, again with the MC13191 RF front-end, and the HC08 family MCHC908JW32 for the
USB communication.
Both sides communicate over the RF medium utilizing the freely available software stack SMAC from
Freescale.