Problem in communicating to WL1873 through Bluetooth UART HCI Port by using UART-to-USB converter on PC

Buli Xu

Other Parts Discussed in Thread: TXS0108E

I have a custom WL1873 Module and am following WL18xx Hardware integration Guide to bring up Bluetooth on this module. By following section 4.2 (setting Vbar, VIO, SCLK, BT EN), powering up of this module is successful based on the current draw from power supply, but I could not make UART HCI port work.

My first trial utilizes a Windows PC, 3.3V UART-to-USB converter, a bi-direction level shifter (TI TXS0108E), and TI wireless tool (glogger or logger). But could not get anything back from glogger. Any comments?

On Linux PC and with the same hardware setup, I tried the following command:

hciattach /dev/ttyUSB0 texas 115200

and got a timeout error. I read Bluetooth stack needs a BTS file to initialize. Can anyone point me to the right direction?

over 8 years ago

0 Eyal Reizer over 8 years ago

TI__Mastermind 20285 points

Hi,
Your query has been assigned to the relevant Bluetooth expert.
Please expect a followup response.
BR,
Eyal

0 Chen Loewy over 8 years ago in reply to Eyal Reizer

TI__Expert 5285 points

Hello Buli,

It sounds you are doing everything the way it should be.

A couple of minor comments and questions:

1. For BT you need to use the logger tool and not the glogger.
2. Can you please send a picture of your setup so and the exact logger configuration?

Thanks,
Chen Loewy

0 Hari Nagalla over 8 years ago in reply to Chen Loewy

TI__Mastermind 27080 points

Hi Buli,

In addition - for BT logger configuration, can you confirm you are following the suggested baud rate of 921600 and your USB/serial is wired to pin 43..

(from swru437.pdf)
Table 10. Debug/RS232 Interface Lines
Pin Number Name Type Description
26 WLAN RS232 RX I WLAN debug interface
27 WLAN RS232 TX O WLAN debug interface
42 WL_UART_DBG O WLAN FW logger
43 BT_UART_DBG O BT FW logger

Thanks

0 Eyal Reizer over 8 years ago in reply to Hari Nagalla

TI__Mastermind 20285 points

Hi,
Should we still keep this thread open?
BR,
Eyal

0 Buli Xu over 8 years ago in reply to Eyal Reizer

Intellectual 400 points

I got SS1Tool cmd working for Bluetooth, but have went back and try the logger on PC. Thanks. Please close the thread.

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Problem in communicating to WL1873 through Bluetooth UART HCI Port by using UART-to-USB converter on PC