BOLT
UDOO BOLT User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by L.V. Copyright © 2019 SECO S.p.A.
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3.3.11
ARDUINO interface
On a dual row p.2.54mm dedicated female header is realised an Arduino Leonardo interface,
which is managed by an ATMEL ATmega32U4 microcontroller, connected to the AMD Ryzen
Embedded V1000 processor via an internal USB. It
’
s exactly the same thing as having an
Arduino Leonardo board attached via USB to a standard PC.
It is possible to refer to Arduino Leonardo documentation for a description of the signals
available on this connector, and the way to use them.
Near the connector, there is also an integrated Yellow SMT LED, which indicates the proper
working of Arduino section. This LED is driven by using IO13* signal, it
’
s working depends on
the programming of ATmega32u4 microcontroller.
On-
buttons/led header CN6,
it is also available a miniaturized momentary switch, that can be used to reset the ATmega32u4
microcontroller.
Arduino Interface Connector CN24
Pin Signal
Pin Signal
1
A5
2
D0 / RX
3
A4
4
D1 / TX
5
A3
6
D2 / SDA
7
A2
8
D3 / SCL
9
A1
10
D4
11
A0
12
D5*
13
---
14
D6*
15
GND
16
D7
17
GND
18
IO8
19
5V_OUT
20
IO9*
21
3.3V_OUT
22
IO10*
23
RESET#
24
IO11*
25
5V_OUT
26
IO12
27
MISO
28
IO13*
29
MOSI
30
GND
31
SCK
32
AREF
33
GND
34
D2/SDA
35
RXLED
36
D3/SCL
37
TXLED
38
GND
39
5V_OUT
40
5V_OUT
Arduino LED
ATMega32u4
Reset Button
