BT900 Development Kit
Version 0.3
Embedded Wireless Solutions Support Center:
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www.lairdtech.com/wireless
14
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6
B
REAKOUT
C
ONNECTOR
P
INOUTS
6.1
JP2, JP3, JP4, JP5 SIO (Special Input / Output Sockets) Breakout Connectors
Access to all 28 BT900 series module signal pins (SIO’s = signal Input /Output) is available on four connectors JP2, JP3,
JP4, JP5 (2.54 mm pitch 2x5 headers).
Note: The BT900 module signal pins designation SIO (Signal Input /Output).
The default type is DIO (Digital Input or Output) or UART (on fixed pins)
The alternate type is either AIN (Analog Input ADC), I2C, SPI, DIO (on fixed pins), PWM or FREQ and WKUP or
Ext Interrupt
Alternate function is selectable in
smart
BASIC
application
DIO or AIN functionality is selected using the GpioSetFunc() function in
smart
BASIC
AIN configuration selected using GpioSetFunc() function
I2C, UART, SPI controlled by xxxOPEN() functions in
smart
BASIC
SIO_0 to SIO_3 are DIO by default when $autorun$ app runs on power up
These breakout connectors can interface to a wide array of sensors with the BT900 function user configurable by
smart
BASIC application script from the default function (DIO, UART) to alternate functions (AIN (ADC), I2C, SPI, DIO,
PWM or FREQ and WKUP or Ext Interrupt). The BT900 development kit incorporates additional connectors and cables
inside the box, to enable simple, hassle-free testing of the multiple interfaces.
Figure 8: Breakout board connectors
6.1.1
JP2
In the
smart
BASIC application code written to use sensors on the development board (including the Temperature
sensor (U1), Trim Pot(VR9), Buzzer (BZ1), LED1, LED2, Button1 (SW1, and Button2 (SW3), I2C device (U13), SPI device
(U12), the SIO pins direction and type (that these sensors are connected to, SIO_21, SIO_20, SIO_12, SIO_17, SIO_18,
SIO_13, SIO_20, SIO_10, SIO_12, SIO_6 to SIO_9 respectively) must be set in the
smart
BASIC application to override
the defaults in the BT900 firmware.
VCC_IO
SIO_20
RTC_ALARM
GND
SIO_13
nAutoRUN
SIO_5
SIO_4
SIO_3
PIN HEADER,2.54mm,2X5P,
JP2
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
SIO_21
VCC_IO
SIO_13
SIO_12
SIO_10
SIO_8
SIO_11
SIO_7
SIO_9
GND
SIO_6
VCC_IO
PIN HEADER,2.54mm,2X5P,
JP3
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
nRESET
PIN HEADER,2.54mm,2X5P,
JP4
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
SIO_17
SIO_18
SIO_19
SIO_20
VCC_IO
GND
VCC_IO
SWDIO
SWDCLK
SIO_15
BT_NC
PIN HEADER,2.54mm,2X5P,
JP5
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
BT_NC
BT_NC
WLAN_ACTIVE
BT_ACTIVE
VCC_IO
GND
VCC_IO
BT_PRIORITY
BT_NC
