AN2707 Freescale Semiconductor / Motorola, AN2707 Datasheet - Page 12

• Manufacturer Part Number: AN2707
• Description: Software Drivers for Tango3 RF Transmitter and Romeo2 RF Receiver ICs
• Manufacturer: Freescale Semiconductor / Motorola

AN2707
Tango3 Driver
Description
12
Software Drivers for Tango3 RF Transmitter and Romeo2 RF Receiver ICs
This section provides a description of the Tango3 driver application interface
and run-time services.
The Tango3 driver provides a set of runtime services using C function calls that
allow the user to transmit messages. The services are listed below.
TangoInitialise — Configures the Tango3 driver (must be called when MCU
resets).
TangoEnable — Enables driver (and Tango3 hardware) for transmission.
TangoDisable — Disables driver (and Tango3 hardware).
TangoDriverStatus — Returns current state of driver.
TangoSendPreamble_ID — Driver transmits message preamble and ID fields.
TangoSendData — Driver transmits Header, Length, Data and EOM fields.
TangoSendMessageNoHeader — Driver transmits a message frame with no
header field.
TangoTimerInterrupt — Provides the driver with a link to the MCU’s timer
interrupt.
Messages are constructed in a RAM buffer prior to transmission. The driver can
send messages with or without a Header field as describes in
Messages With Header Detect on page 5
Header Detect on page
with a header field,
a header field.
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
generate accurate data on Tango3's DATA pin. This is especially useful
with MCUs that use low-cost RC or internal clock sources, which are
inherently inaccurate.
One I/O pin connected to Tango3's MODE pin. This allows the MCU to
select OOK or FSK operation. Alternatively, the designer could tie the
MODE pin directly to Vdd or ground, to select OOK or FSK mode,
respectively.
One I/O pin connected to Tango3's BAND pin. This allows the MCU to
select high or low band operation. Alternatively, the designer could tie
the BAND pin to Vdd or ground, to select low or high band operation,
respectively.
One I/O pin connected to Tango3’s ENABLEPA pin. (Note: This pin is
provided for use with Motorola's Tango3 RF module, which features an
on-board power amplifier.)
Go to: www.freescale.com
Figure 11
5.
Figure 10
shows a flowchart for sending a message without
shows a flowchart for sending a message
and
Sending Messages Without
Sending
MOTOROLA