DLP-RFS-DK DLP Design, DLP-RFS-DK Datasheet - Page 10

• Manufacturer Part Number: DLP-RFS-DK
• Description: RF Development Tools DLP-RFS1231 development kit
• Manufacturer: DLP Design
• Type: RF Transceiversr

Specifications of DLP-RFS-DK

• Rohs: yes
• Product: Development Kit
• Tool Is For Evaluation Of: DLP-RFS1231
• Frequency: 915 MHz
• Operating Supply Voltage: 2.4 V to 3.6 V
• Dimensions: 1.5 in x 2 in x 1.53 in
• Interface Type: UART
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• For Use With: DLP-RFS1231

4.1.10 RADIO MANAGER
The radio abstraction API provides low-level access to the XE1231 radio IC. Generally, these
functions would be used by the protocol stack to control the radio. The application would not likely
need to call these functions directly, except for the case of automated testing in the manufacturing
stage.
5.0 RF PROTOCOL STACK DETAILS
The following sections document the details of the protocol stack.
5.0.1 APPLICATION LAYER
Detailed Description:
The Application Layer is user defined, but it typically does the following:
- Initializes the hardware and software managers
- Initializes Application-Layer variables and data structures
- Reads the MAC ID chip and sets the MAC ID of the system
- Passes the address of the Application Layer master loop to MacMain:
Do Forever MacMain() PhyMain() AppMain() End Do
The MAC Layer main loop will run to completion then call the Application Layer main loop ad infinitum.
The Application Layer main loop is completely user defined. A typical sensor node application will set
a timer and periodically read sensors and transmit the sensor data to another node using MAC-Layer
function calls. The Application Layer may also listen for messages from other nodes. The MAC
Manager will notify the Application Layer via the Event Manager when packet transmissions are
complete, packet reception has occurred or some type of error event occurs.
The sample application that is provided will do one of two functions based upon a switch setting on
the battery board. A Logic 1 on Switch 1 of the dip switch means that the node will be a sensor node.
A Logic 0 means that the node will be a gateway or master node. If it is a sensor node, the app reads
the MAC ID chip and sets the MAC ID to the value read from the MAC ID chip. If it is a gateway/
master node, the MAC ID is set to 0.
The gateway or master node will set the radio for reception. When a valid packet is received, the
packet is output to the USB port on the battery board, the buzzer is sounded and the green LED on
the battery board is flashed.
The sensor node sets a timer event using the Timer Manager. When a timer event occurs, the Timer
Manager will call the application callback which, in turn, causes the start of a sensor read. The
sensors (temperature, light and battery voltage) are read via the ADC. The result is inserted into a
fixed -length message and transmitted to the gateway/master through a MAC Manager function call.
This is only one example of how to implement a wireless sensor application. The potential applica-
tions are limitless. Most of the resources of the RL78 MCU are available for the application to use.
© DLP Design, Inc.
Rev 1.1 (November 2012)
10