Board controller. MICROCHIP MICROCHIP ATXMEGAE5-XPLD

4.6

Illuminance [lux]

500

600

700

800

900

1000

ADC input [V]

1.1750

1.4100

1.6450

1.8800

2.1150

2.3500

Illuminance

Office lighting

Office lighting

Office lighting

Office lighting

Office lighting

Overcast day

Board controller

The Atmel AT32UC3B1256 board controller and the Atmel ATxmega32E5 are connected through TWI, SPI, and

USART interfaces. All interfaces can be used to communicate between the devices, but only the USART is implemented by default on the board controller.

Table 4-7. ATxmega32E5 and board controller communication interface.

Interface

UART RX

(1)

UART TX

(1)

TWI SCL

(2)

TWI SDA

(2)

SPI SS

(3)

SPI MOSI

(3)

SPI MISO

(3)

SPI SCK

(3)

ATxmega32E5 pin

PD6

PD7

PC1

PC0

PC4

PC7

PC6

PC5

Atmel AT32UC3B1256 pin

PA24

PA23

PA09

PA10

PA16

PA14

PA25

PA17

Notes:

1. This represents the RX and TX on the ATxmega32E5. The RX is connected to TX on the other device, and vice versa.

2.

3.

These TWI signals can be reconnected by placing a 0 ohm resistor or a solder drop on R408 and R409 footprints.

These SPI signals can be reconnected by placing a 0 ohm resistor or a solder drop on R410, R411, R412 and R413 footprints

Atmel AT02667: XMEGA-E5 Xplained Hardware User’s Guide [APPLICATION NOTE]

42084A −AVR−04/2013

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5.

Code Examples

The example application is based on the Atmel AVR Software Framework that is included in Atmel Studio 6. The AVR

Software Framework can also be found as a separate package online at: http://www.atmel.com/tools/avrsoftwareframework.aspx

.

For more information about the code example, see the application note Atmel AT02657 XMEGA-E5 Xplained Software

Users Guide.

The Atmel AT32UC3B1256 board controller is also pre-programmed with a bootloader and an USART-to-USB gateway application which can be used to communicate with the target controller ATxmega32E5.

Atmel AT02667: XMEGA-E5 Xplained Hardware User’s Guide [APPLICATION NOTE]

42084A −AVR−04/2013

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