4.2.3 Changing Transport Interface
To change to USB:
1. Change the Host Interface.
l
Select the Host Interface PS Key (505 PSKEY_HOST_INTERFACE).
l
Set to
USB link
using the pull-down menu.
l
Click on
Set
to update the Persistent Store.
2. Set D+ Pull-Up
l
Select the USB d+ Pull-up PIO Line PS Key (720 PSKEY_USB_PIO_PULLUP).
l
Set the key to the PIO output that drives the USB D+ pull-up resistor. This is PIO[2] on Casira
modules. This key should be set to
0x02
. If no value is present, then no pull-up is used. PIO[0]
is used if the value is
0x00
.
l
Click on
Set
to update the Persistent Store.
3. Reset BlueCore.
The module is now configured for USB mode.
To change to BCSP:
1. Change the Host Interface.
l
Select the Host Interface PS Key (505 PSKEY_HOST_INTERFACE).
l
Set to
UART link running BCSP
using the pull-down menu.
l
Click on
Set
to update the Persistent Store.
2. Configure the UART interface.
l
Select the PSKEY UART configuration bitfield (517 PSKEY_UART_CONFIG).
l
Set this value to
6
.
l
Click on
Set
to update the Persistent Store.
3. Set baud rate.
l
Select the UART baud rate PS Key (516 PSKEY_UART_BAUD_RATE).
l
Set to the required baud rate (e.g., 115.2 kbaud).
l
Click on
Set
to update the Persistent Store.
4. Reset BlueCore.
This configures the BlueCore module to use BCSP over the UART.
The UART configuration Bitfiled key is a presentation key. Setting this to
6
configures the following keys:
l
UART: Stop Bits PS Key to
One stop bit
l
UART: Parity Bit PS Key to
Even Parity
l
UART: Hardware Flow Control? PS Key to
Disabled
l
UART: RTS Asserted? PS Key to
False
l
UART: Enable BCSP-specific hardware PS Key to
Enabled
Summary of Contents for BUB-204B
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