topic Re: KW38 for BLE HCI TEST in Kinetis Microcontrollers

KW38 for BLE HCI TEST

KenFeng — Thu, 09 Jan 2025 02:42:49 GMT

Hello,

I currently have two questions regarding the BLE testing for the KW38.

1. I am using frdmkw38_hci_black_box_freertos, and I noticed that the SDK function Controller_SetDTMBaudrate(gDTM_BaudRate_115200_c) can only use UART. How can I modify it to use CAN communication instead?

2. If I divide my program into two versions: a production test program and a production application program, and I use the production test program for HCI RF testing, completing the calibration values, will these calibrated RF values be modified if I reflash it with the production application program?

3. As mentioned above, if I want to include some HCI test content in the production application program, is that feasible? Could you provide an example?

Re: KW38 for BLE HCI TEST

weidong_sun — Fri, 10 Jan 2025 03:13:10 GMT

Dear @KenFeng ,

See below, please!

--No.1 question

The function, Controller_SetDTMBaudrate(gDTM_BaudRate_115200_c) , is only used to set UART baud rate, it can't be modified for setting of CAN bus.

--No.2 question

RF calibration data should be placed in your application source code, The essence of RF calibration is to adjust the trim value of the 32MHz clock，see 'void BOARD_SetXtal32MHzTrim(uint8_t trimValue, bool_t saveToHwParams)' in board.c

--No.3 question

No other hci example code except for examples in SDK.

Thanks!

Regards,

weidong

Re: KW38 for BLE HCI TEST

KenFeng — Mon, 13 Jan 2025 00:43:59 GMT

Hi @weidong_sun ：

1. Can I use CAN bus to send HCI commands if I want the CAN bus to replace the UART interface?

2. I want to know that I calibrate RFIC parameters through HCI commands during the mass test process. If I reprogram the API code, do I need to calibrate again?

Re: KW38 for BLE HCI TEST

weidong_sun — Mon, 13 Jan 2025 03:00:37 GMT

Dear @KenFeng ,

>>1. Can I use CAN bus to send HCI commands if I want the CAN bus to replace the UART interface?

No, you can't .

>>I want to know that I calibrate RFIC parameters through HCI commands during the mass test process.

No, you can't.

>>If I reprogram the API code, do I need to calibrate again?

For the same design and product, you only need to calibrate once. Simply write the calibration data into your app.

Thanks!

Regards,

weidong