
Chapter 4. Implementation 37
XMEGA
expansion port
FT232
RN171
RFM22B
USART
433MHz
WLAN
USB
SPI 3 USART 22 I/O-Pins
Power
+5VDC
RTC
usb-serial bridge
SPI
USART
Figure 4.1.: The structure of WifiControl 433: The centerpiece is an Atmel ATXMega192A3,
an 8 bit microcontroller, which is connected to peripheral hardware, such as a WIFI
module, a USB-serial bridge and a 433 MHz radio.
expansion port
JTAG USB Power
WLAN
433MHz radioRTC
WLAN stateoperational LED
Figure 4.2.: The WifiControl 433 with its different functional units.
time critical events. Figure 4.3 depicts the program core together with the priority table.
Comentarios a estos manuales