AIROC™ Bluetooth Forum Discussions

Hi sir,

I use CYW20829, but I don’t see the "peripheral preferred connection" option during settings.

others screen

my screen

Best Regards,
Peggy

Hello,

We have firmware that was developed for the CYW20732S. Can this firmware be used to program the CYW20736S since the devices appear to be very similar.

Thank you

Dear supporters,

I have referred to the datasheet to compare the current consumption of CYW20819 and CYW20835 in BLE.

I would like to ask following three questions about the measurement conditions.

• What is the value of throughput of CYW20819 at the current consumption listed as 6.15 mA during RX operation?
• What is the value of signal strength of CYW20819 when the current consumption is listed as 6.6 mA during TX operation?
• What is the value of throughput of CYW20835 at the current consumption listed as 8 mA for RX operation?

Best regards,

Kazuki

I am trying to bring up Bluetooth module received from Vendor #CYW89702 @infineon for Android 11. I could see in the documents its mentioned to copy libbt vendor folder from hardware/infineon/libbt. But in AOSP Infineon libbt is not open source. I guess i have missed it and can anybody confirm it that i missed and i need to ask the Vendor for the same. Or I could see Infineon is a sub brand of Broadcom and in AOSP i could see there is already Libbt available of broadcom so i should use that?

Dear Team,

I tried to flash latest EZ-Serial Firmware Image to CYBT-343026-01 by referring EZ-Serial WICED Firmware Platform User
Guide for CYW2070x-based Modules document but not able to do that.

In this document mention to refer WICED SDK chip loading tools and WICED Studio software, which I am not able to find on INFINEON website to download. Need your valuable support on same.

Also I want to control CYBT-343026-01 using external MCU through HCI UART, plz help to share supporting documents if any related to this.

BR,

Nainesh.

hello,

I am trying to understand SPP, so I try to run SPP example code GitHub - Infineon/mtb-example-btsdk-rfcomm-spp: SPP app and when I flash the code, I don't understand, and I even can't detect this Bluetooth device and I also try to follow the readme file instruction, but I stuck at Bluetooth pairing step.

Will appreciate help / pointer in resolving the issue.

Best Regards,

Gautam

Hi.

My SPP project, data loss is occurring.

I want to know the difference between these two status values.

1. spp_rfcomm_control_callback : Status = 19

2. spp_rfcomm_control_callback : Status = 16

The Status = 16 log appeared, and I confirmed that data loss occurs during the subsequent SPP data transmission.

The following is an explanation of the error code values I confirmed in the wiced_bt_rfcomm.h

(/** RFCOMM Result Codes */ enum wiced_bt_rfcomm_result_e)

19 : WICED_BT_RFCOMM_CLOSED

16 : WICED_BT_RFCOMM_PEER_CONNECTION_FAILED

I don't know why the status value is suddenly changing.

Thanks.

Hi Infineon team,

I found a previous thread where Audio Gateway and SPP are used simultaneously.

Solved: Configure CYW20706 for HFP-Audio Gateway and SPP s... - Infineon Developer Community

Would you be having any such example with Modus Toolbox?

I had installed the WICED SDK, but couldn't find any functions related to CYW20706.

Kind regards,

Remo

We are using the 343026-01 and are trying to write the FLASH from within our product. We are using Infineon FW release 1.2.29 (https://www.infineon.com/dgdl/Infineon-ez_serial_cybt_343026_fw_image_1.2.29-Software-v01_00-EN.zip?fileId=8ac78c8c7d0d8da4017d0f8ad1d2759c&da=t). The BT module is connected to the host via UARTs and we have GPIOs to set the recovery, reset, P0/P34, I2C_SDA, P2/P37/P38 and GPIO3 lines. We have pull-ups on those GPIOS (see attached).

I follow this procedure on the HCI_UART all at 115,200 baud:

1. HCI reset, we get a valid response.

2. DOWNLOAD_MINIDRIVER command. We do not get a response but that is because CTS was low so we were in autobaud mode.

3. WRITE_RAM 16 bytes at a time (i.e. one line of the HEX file at a time). We get a valid response so it "appears" to work.

4. READ_RAM to read back the bytes written in step 3. We get a valid response in the form " 04 0E 14 01 4D FC 00 yy yy yy …" BUT the yy bytes are all wrong. So the flash was NOT written.

5. I ignore the READ_RAM contents and contue issuing WRITE_RAM for the entire payload.

6. Issue LAUCH command.

This flash loading code works correctly when run with the EVAL platform, READ_RAM reads back the correct bytes and the BT firmware image runs correctly as my scan find the BT module. But on the embedded product where the READ_RAM report the wrong bytes the BT firmware image does not run correctly as I my scan does not find the BT module.

QUESTIONS:

1. We are aware that we need to pull recovery & reset low, then release reset and then recovery. But do we also need to set P0/P34, I2C_SDA, P2/P37/P38 and GPIO3 lines to anything in particular?

2. The https://www.infineon.com/dgdl/Infineon-AIROC_HCI_UART_Control_Protocol_ModusToolbox.pdf-Software-v01_00-EN.pdf?fileId=8ac78c8c7e7124d1017e90c005730c5b document only talks about using the reset and CTS lines to go into what they call "Recovery Reset". Would this be sufficient or do I also need to control the recovery line.

3. What can cause my WRITE_RAM to fail? I get a valid response but the READ_RAM reads back different bytes to what I sent down. This tells the FLASH write failed.

Weird observation: With the BT module powered off and RESET or RECOVERY set high, I see VDDIN float to around a volt. The HW engineers think there is some "back powering" through the module. Should this be happening?

Thanks in advance.