Getting Started with EZ-BT WICED Modules
Document Number: 002-23400 Rev. **
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image from on-chip flash). If 4-wire UART with flow control is required, it is recommended to use HCI UART as the
UART connection for your application.
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PUART (Positions 1 ~ 4 of SW5 =
ON
) is the configuration to use when desiring to have the PUART connected to
the host PC. This PUART interface to the host PC can be used for terminal communication (print statements).
Note:
PUART communication signals routed to the Arduino headers are not gated by SW5 and can be used to
communicate with any peripheral device over UART.
Note:
The PUART interface cannot be used to download a new binary image to the CYBT-423028-02 module.
C . 3 . 4 Ad d i t i o n a l S w i t c h e s a n d L E D s
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SW1 (RESET switch): SW1 is a tactile switch that is connected directly to the XRES connection of the CYBT-
423028-02 module. Activating this switch will reset the EZ-BT WICED Module. This switch is also used in the
process of (re-)programming the CYBT-423028-02 module on the evaluation board.
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SW2 (RECOVER switch): SW2 is provided to recover a module that has the standard programming bootloader
and/or application image corrupted or erased. Recovery mode is activated by holding this button down while
pressing and releasing SW1 (RESET). Recovery mode is used prior to programming the module with a new binary
image.
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SW3 (USER switch): SW3 is provided as an element that the user can configure as required. The SW3 element
is connected to P1 on the CYBT-423028-02 module (solder pad 17). Header J9 is provided on the CYBT-423028-
EVAL board to disconnect P1 from the USER switch to allow this connection to be used on the Arduino Headers
without SW3 connected.
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D1 USER LED is provided for user-configured behavior as required. The D1 LED is connected to the module P26
connection (solder pad 14). Header J10 is provided on the CYBT-423028-EVAL board to disconnect P26 from the
USER LED to allow this connection to be used on the Arduino Headers without D1 connected.
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D2 and D3 LEDs are provided to display programming or USB activity while in progress.
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D7 LED is provided to show that power is provided from the host PC.
C . 3 . 5 P r o g r a m m i n g o r R e p r o g r a m m i n g t h e C Y B T - 4 2 3 0 2 8 - E V AL B o a r d
Refer to Section
for general information on how to program or reprogram EZ-BT WICED Modules. You may also
refer to
To program an EZ-BT WICED module in your own manufacturing line, you must ensure that both the Recover and
Reset connections on the EZ-BT module are exposed in order to put the module into programming/recovery mode.
