
I/O pin assignment
Pin #
|
Function
|
Description
|
1
|
GND
|
System ground.
|
2
|
VCC
|
Positive power input, 3.3V nominal, +/- 5%.
|
3
|
CS
|
Chip select, active LOW (input*).
|
4
|
RX
|
UART, receive line (input*).
|
5
|
DI
|
SPI port, data in (input*, must be connected to DO of Tibbo module).
|
6
|
TX
|
UART, transmit line (output*).
|
7
|
RST
|
Reset, active LOW (input*).
|
8
|
N.C.
|
No connection.
|
9
|
DO
|
SPI port, data out (output*, must be connected to DI of Tibbo module).
|
10
|
CLK
|
SPI port, clock (input*).
|
* Of the WA2000.
The UART of the WA2000 is currently unused but may be enabled in the future.
|