Digilent 410-231P-KIT - Manual (Page 3)

chipKIT™ WiFi Shield Reference Manual
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SD Card Interface
The micro-SD card connector provides the
ability to access data stored on micro-SD sized
flash memory cards.
SD memory cards are accessed via the same
SPI bus as is used to access the WiFi module.
The SD card uses a separate select line from
that used by the WiFi module to enable API
access to the SD card. The chipKIT MPIDE SD
library can be used to access files stored on a
micro-SD card.
Library Software
The chipKIT WiFi Shield is intended for use
with the Digilent chipKIT network libraries
DNETcK and DWIFIcK. The DNETcK library
provides TCP/IP protocol support for all
chipKIT compatible network interfaces
supported by Digilent products, including the
WiFi Shield. The DWIFIcK library provides the
additional library support required for
connecting to and operating with the Microchip
MRF24Wx0MA wireless network modules.
The DWIFIcK library supports both the
MRF24WB0MA and MRF24WG0MA modules.
The correct header file must be used
depending on the version of the module on the
WiFi Shield.
When using a WiFi Shield with the
MRF24WB0MA module, use the following
statement:
#include
When using a WiFi Shield with the
MRF24WG0MA module, use the following
statement:
#include
The Digilent chipKIT network libraries are
available for download from the Digilent web
site:
www.digilentinc.com . These libraries
make use of a custom version of the Microchip
Application Library. It is necessary to accept
the Microchip Application Library license
agreement before downloading the library.
There are reference examples demonstrating
the use of these libraries in the library
download. There are more extensive examples
available on the Digilent web site as well.
Signal Pin Assignments
uC32/
Uno32
Pin # Max32
Pin # Connector
Pin # Signal
2 2 J2-05 INT – external interrupt from MRF24WB0MA
3 3 J2-07 LED1
4 4 J2-09 SDCS – SPI select for SD card
5 5 J2-11 LED2
6 6 J2-13 LED3
9 9 J1-03 LED4
10 10 J5-05 CS – SPI select for MRF24Wx0MA
11 11 J5-04 MOSI – data in (SDI) for MRF24Wx0MA and SD card
12 12 J5-01 MISO – data out (SDO) for MRF24Wx0MA and SD card
13 13 J5-03 SCK – SPI clock for MRF24Wx0MA and SD card
34 78 J1-02 HIBERNATE
35 79 J1-04 WP
36 80 J1-06 RESET
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