User's Manual
Table Of Contents
- 1.0 Absolute Maximum Ratings
- 2.0 Normal Operating Conditions
- 3.0 Electrical Specifications
- 4.0 Radio
- 5.0 Pinout
- 6.0 Mote Boot Up
- 7.0 Interfaces
- 7.1 Timestamps
- 7.2 Status
- 7.3 Serial Interface
- 7.3.1 Serial Handshake Protocol
- 7.3.2 Mote Command Data Types
- 7.3.3 Mote Commands
- 7.3.3.1 Command 0x80 Serial Payload Sent to Mote Serial
- 7.3.3.2 Command 0x81 Unacknowledged Serial Payload Received from Mote Serial
- 7.3.3.3 Command 0x82 Acknowledged Serial Payload Received from Mote Serial
- 7.3.3.4 Command 0x84 Time/State Packet
- 7.3.3.5 Commands 0x87 and 0x88 Set Parameter Request/Response
- 7.3.3.6 Commands 0x89 and 0x8A Get Parameter Request/Response
- 7.3.3.7 Command 0x8C Mote Information
- 7.3.3.8 Command 0x8D Reset Mote
- 7.3.4 Mote Get/Set Command Parameters
- 7.3.5 HDLC Packet Processing Examples
- 8.0 Packaging Description
- 9.0 Regulatory and Standards Compliance
- 10.0 Ordering Information
Interfaces
10 DUST NETWORKS™ M2135-1/M2030-1 MOTE DATASHEET
CONFIDENTIAL
7.3 Serial Interface
The M2135-1/M2030-1 offers a well-defined serial interface that is optimized for low-powered embedded applications. This
serial interface offers a serial port comprised of the data pins (TX, RX) as well as the handshake pins (
MT_RTS, MT_CTS,
SP_CTS) used for bidirectional flow control. Through this port, the M2135-1/M2030-1 provides a means of transmitting and
receiving serial data through the wireless network, as well as a command interface which provides synchronized time
stamping, local configuration, and diagnostics.
The following sections detail the Serial Interface Protocol, the Mote Command Interface, and the timestamping capability of
the M2135-1/M2030-1 serial interface.
7.3.1 Serial Handshake Protocol
The Serial Interface Protocol handshake provides for flow control of packets transmitted via the M2135-1/M2030-1 serial
interface. Packet delineation and error control are handled separately. The Interface supports the following:
• Full-duplex communication
• Bidirectional byte-level flow control
7.3.1.1 Serial Port
The five-pin serial port is comprised of the data pins (TX, RX) as well as the handshake pins (MT_RTS, MT_CTS, SP_CTS)
used for bidirectional flow control. This port supports 9600 bps operation in full-duplex mode. The handshake signals are
active low.
The following diagram illustrates the pins used in the handshaking protocol:
Figure 8 Diagram of Pins Used in Handshaking Protocol
Table 12 Serial Parameters
Parameter Value
Bit rate 9600
Start bit 1
Data bits 8
Parity None
PRELMINARY