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P1_2/VDD_SW
6
P1_2
_CTRL
5
P1_3
P1_3/GPIO
P1_4/CSn/SS/
4
P1_4
CTS
P1_5/SCLK/RT
3
P1.5
S
P1_6/SI/MOSI/
2
P1_6
UART_TD
P1_7/SO/MISO
1
P1_7
/UART_RD
48
P2_0
P2_0/Joy_push
46
P2_1
P2_1/DD
45
P2_2
P2_2/DC
10
RESET
RESET_N
The joystick output is coded as an analog voltage. This has been done in order to save the
number of pins required on the MCU to interface with the joystick. The push function of the
joystick is connected to a digital input pin.
6.4 Using the UART interface on the CC2430DB
The CC2430 UART interface port is accessible on the header connectors as 3.3V signals. An
RS232 driver circuit is required to connect the UART interface on CC2430DB to a serial port
on a PC. The RS232 port on a SmartRF04EB can be connected to the CC2430DB to allow
applications to interface to a PC serial port.
Table 7 shows the connection between the CC2430DB and the SmartRF04EB. Both the P8
(10-pin) connector and the P6 (20-pin) connector on the CC2430DB can be used, but only
one of them should be connected at the same time.
Signal Name
RD
TD
RTS
CTS
GND
Table 7: CC2430ZDK to SmartRF04EB serial port connections
A jumper must be placed between pin 7 and pin 9 on the USB MCU debug connector P301
on the SmartRF04EB board. This will ensure that the Silabs USB controller does not force
any pins to erroneous levels.
To use the serial port on CC2430DB USART1 must be used on alternative location 2 in the
CC2430. Please see the CC2430 datasheet for instructions how to select serial port and
location. Using the SmartRF04EB will only work if the Silabs USB controller on the
CC2430DB is powered, i.e. the CC2430DB must be powered from a USB or DC jack.
Voltage control for I/O
modules
Free I/O for controlling
external signal
Joystick push interrupt
active high
Debug Data
Debug Clock
Reset
Table 6: Pinout CC2430
SmartRF04EB
CC2430DB
P10
P8, "2430deb"
9
11
13
15
20
SWRU125
OUT
OUT
HIGH
LOW
OUT
OUT
LOW
LOW
OUT
OUT
LOW
LOW
OUT
OUT
LOW
LOW
OUT
OUT
LOW
LOW
OUT
OUT
LOW
LOW
IN
IN
IN
IN
CC2430DB
P6, "I/O A"
10
6
8
8
6
10
5
12
1
20
Page 13
R305
R308
R306
R307
Jumper
P5
Jumper
P5
Jumper
P5
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