Studio Bluetooth Forum Discussions

hi I'm looking or BT and BLE 5.0 and found two chips but I have no idea what's defferent between CYW20735PKML1GT(https://www.mouser.com/ProductDetail/Cypress-Semiconductor/CYW20735PKML1GT?qs=sGAEpiMZZMuReUCzg6bfTEVxJFSckmj9IfObzww9orjI0EYLwAgs7w%3d%3d) and CYW20735PB1KML1GT(https://www.mouser.com/ProductDetail/Cypress-Semiconductor/CYW20735PB1KML1GT?qs=%2fha2pyFadugUOWddXJB52XqbV4iiuHqmcfwph64kNb4hLos0ciRdedCTp2LfcPWW) there specifacation are same but pirce are not

Hello,

I'm developing with CYBT-343026-EVAL.

After downloading an application to the serial flash, I transmitted WICED HCI UART commands over pc terminal(HCI UART Interface). The Traces are shown on a seperate terminal connected to PUART Interface. Everything worked fine.

After power cycle the board the WICED HCI UART commands not working anymore.

But the Traces still work.

So I refered to this post BD_ADDR: Changing BCM20737 Board Address for Production .

May this be the solution?

And if so, where do i get the files from for my specific board?

I need my BT classic master to pair with a slave in a RFCOMM connection.

The master is a custom board using CYW43907 combo chip.

The slave is a WICED CYW920719Q40EVB-01 eval board with the WICED 6.2 20719-B1_Bluetooth/apps/snip/bt/spp demo app uploaded.

My Android phone (acting as a master) is able to pair with the slave.

But I cannot get my board to pair with the slave.

I am able to inquire the device and get the slave bd_addr.

After the inquiry is complete I'm calling wiced_bt_rfcomm_create_connection():

wiced_result_t result = wiced_bt_rfcomm_create_connection( UUID_SERVCLASS_SERIAL_PORT,

            BT_RFCOMM_SERVER_APP_SCN,

            FALSE,  // Master-side is client

            BT_RFCOMM_SERVER_APP_MTU,

            bd_addr, // this is the address to the slave.

            &bt_rfcomm_client_handle,

            bt_rfcomm_client_conn_cback );

result is 0 (WICED_BT_RFCOMM_SUCCESS).

Several questions:

As the master do I need to set connectivity (wiced_bt_dev_set_connectability())?

As the master do I need to set discoverability (wiced_bt_dev_set_discoverability())?

If so, do I need to do this before or after the call to wiced_bt_rfcomm_create_connection()?

After calling wiced_bt_rfcomm_create_connection() the BT management callback function (p_bt_management_cback called from wiced_bt_stack_init())  receives a BTM_LOCAL_IDENTITY_KEYS_UPDATE_EVT event.

I don't know how to handle this.  Please advise.

The connection callback (bt_rfcomm_client_conn_cback) function gets called after this.

the result code is 0x10 (WICED_BT_RFCOMM_PEER_CONNECTION_FAILED)

I am using CYBT-343026-EVAL now.

After paring to a BT Headset,I want to confirm voice from CYBT-343026-EVAL .

At first, I use CYBT-343026-EVAL pari to a BT Headset with Client control.

For Confirm whether there is a voice between CYBT-343026-EVAL and BT Headset,

I connected pin of CYBT-343026-EVAL with oscilloscope,I can see CPU clock waveform and

Frame sync edge waveform,but I can't see any waveform relate to voice.

Then I connected all the  else other pin with oscilloscope,

I can't see any waveform relate to voice,too.

Could you tell me how to confirm voice.

user_437857088​user_140663973​goto-t_2353976​shjl​axel.lin_1746341​

I followed this tutorial to configure ClientControlMesh.exe on my Windows10 laptop, Cypress BLE Mesh Solution

I downloaded mesh_provision_client firmware on my CYW920719Q40 EVK.

In section "Provisioning using windows ClientControlMesh Application", step 3 Click the "Open" button.

I always had below issue, how can I solve this problem?

Hello team,

I believe I have accidentally bricked a CYW20719-powered board. My Computer can see a device on COM11 and 12, but the device won't respond to resets, power cycles, or being put into recovery mode, and whenever I try to flash it, I get this error:

Downloading application... ****Download failed **** Trying baudrate 115200   Conn: PORT=COM11    BAUDRATE=115200 Trying baudrate 3000000   Conn: PORT=COM11    BAUDRATE=3000000 Downloaded 0 code bytes ( 0.0%) and 0 data bytes ( 0.0%). Verified 0 code bytes ( 0.0%) and 0 data bytes ( 0.0%).   Current state: Terminated with error Failed to determine baud rate Download failed. This WICED platform of the SDK only supports download to 207x9B1 devices. Follow the instructions in the 20719-B1 README.txt for downloading the application.

Before this started happening, I received a strange message about the programmer only writing 6 bytes to some 0x5000xxx address, but I don't have that console log saved. I believe this initial failed download was due to broken solder joints on the USB connector, which has since been fixed.

Additionally, another engineer has told me that the IC clocks are still running.

Is there any way I can repair this board?

Thank you,

Nicholas

I installed WICED V6.2.1 on my Windows10 laptop, I found that when I open ClientControl app on Windows10, the UI looks like this:

I can't use this tool, so how can I fix this issue? Thanks in advance.