DRM050 — Rev 0 Designer Reference Manual
MOTOROLA Keyboard Transmitter Firmware 31
Designer Reference Manual — DRM050
Section 6. Keyboard Transmitter Firmware
6.1 Firmware Structure
The firmware structure consists of two main parts:
• MAC Layer protocol
• Main Application routine
The MAC layer also implements the RFWaves CSMA protocol. Please
refer to the section 4.1 MAC Layer Protocol for a description of this
layer.
Figure 6-1 shows the flow of the main program. The main tasks are to
detect any key being pressed or released and then send the key code
by RF signal through the control of baseband RFW-D100 IC.
If no key is pressed within 10 seconds, LK24 will put the baseband IC
into power down mode, LK24 will also enter lower power mode. The
MCU will be woken up when any key is pressed.
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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