SAM9-L9261 Olimex Ltd., SAM9-L9261 Datasheet - Page 8

• Manufacturer Part Number: SAM9-L9261
• Description: MCU, MPU & DSP Development Tools DEV BRD FOR AT91SAM9260
• Manufacturer: Olimex Ltd.

Specifications of SAM9-L9261

• Processor To Be Evaluated: AT91SAM9260
• Data Bus Width: 16 bit, 32 bit
• Interface Type: RS-232, Ethernet, USB, JTAG
• Dimensions: 100 mm x 80 mm
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1776345 52R3721

EXTENSION PORT
LEDs can be manually controlled from the Linux shell prompt. For
example, to switch on LED2:
And to switch it off:
The board has an extension port EXT with eleven GPIO pins that can be
controlled from user-space Linux applications. The available pins are:
In order to setup a pin direction user must write the string “high”, “low”,
“out” or “in” to the file /sys/class/gpio/gpio-extX/direction in order to
--
--
PA7
PA8
PB4
PB30
PC4
PC5
PC6
PC7
PC12
PC13
--
--
AT91
PIO
echo 255 > /sys/class/leds/led2/brightness
echo 0 > /sys/class/leds/led2/brightness
--
--
gpio39
gpio40
gpio68
gpio94
gpio100
gpio101
gpio102
gpio103
gpio108
gpio109
--
--
under /sys/class/gpio
Directory name
distinctive heartbeat pattern.
1
2
8
9
10
11
13
14
15
16
17
18
19
20
EXT
pin#
+3.3V
GND
Not available when SD/MMC is enabled
Not available when SD/MMC is enabled
+5V
GND
Notes