Studio Bluetooth Forum Discussions

Hello guys! I want to make wireless communication system using CYBT-483039-02. In my system,  MPU such as ARM is connected to CYBT-483039-02 by peripheral UART (only TxD, RxD, VCC, and GND).  Data is transmitted to another CYBT-483039-02 connected to PC via Bluetooth. In this system, how can I download the app to CYBT-483039-02 of MPU? Can I use an external HCI UART Interface of CYBT-483039-EVAL to download the app to CYBT-483039-02 of MPU? Please tell me a good way.

Hello,

I'm working with BCM20736S which communicates with a host controller over SPI. I'm trying enter BLE Direct Test Mode which as far as I understand is only accessible via sending HCI commands directly.

I was able to use the mode over UART via the Bluetooth Test tool and now I'm trying to incorporate the tests into our main application.

This post answers my question but the hci_control_test.c. is not available for the WICED Smart 2.2.3 which is the latest, but now obsolete, version that supports BCM20736S.

Enabling BLE Direct Test Mode from WICED-Studio application

I was able to find the file in the latest WICED Studio and am trying to back-port it to our application. However it appears to still send the HCI commands over UART and not SPI.

Is there a way to send HCI over SPI?

Thanks

Hello,

I am using Bluetooth + BLE dual mode stack.

I have gone through Bluetooth SIG Core_4.2 standards. I was going through BLE legacy and Secure connection. Also I was going through Bluetooth SSP (Secure Simple Pairing) for better understanding and comparison.

Below is my understanding.

1) BLE Secure connection is similar to Bluetooth SSP with respect to Public & Private keys exchange.

2) LTK is used in BLE Secure Connection. Link key is used in Bluetooth SSP.

I have few queries. I am bit confused. Whether below statements are correct ? Please correct me if I am wrong.

1) Pairing & Bonding is only in BLE. In BLE pairing keys are not stored whereas in BLE bonding keys are stored.

2) In Bluetooth classic, as part of SSP, Link keys are stored. In Bluetooth there is no Pairing similar to BLE where keys are not stored.

3) Bonding in BLE is similar to Bluetooth classic Pairing with respect to keys storing.

Thanks & Regards

Vishnu Beema

Hi,

The WICED SDK of 20735B1, I find functions for example, wiced_bt_gatt_status_t hello_sensor_gatts_callback( wiced_bt_gatt_evt_t event, wiced_bt_gatt_event_data_t *p_data),it was called by wiced_bt_gatt_register(hello_sensor_gatts_callback); But I haven't find where the value of event and p_data be set. 

Thanks

  Erxi

Problem Overview:

We are trying to pair with IOS-13 beta and we support (HFP,A2DP,GATT,ANCS). So first Connect LE(GATT and ANCS) then Connect HFP but after sometime the HFP disconnects.

The Reason for the disconnection :

RCVD [0] Event from HCI.  Name: HCI_Disconnection_Complete   (Hex Code: 0x05  Param Len: 4)

Status : Success (0x00)

Connection Handle : 13 (0x000d)

Reason : 8 (0x08)

Connection Timeout

Observation1 : Based on the Attachment “bluetoothd-hci-latest_A2dp”

I see there was no response to the “AVDTP Discover” and there was disconnection which I think was initiated from the IOS-13. Please find the attachment and it also has IOS phone sniffer logs.

Observation2 : Based on Attachment “Handsfree_Disconnect_WithoutA2dp_IOS”

I disabled the A2DP  from my code and re run the program but still there was a disconnection and there was same error  but I think it was because, phone was not responding to AT+VGS and AT+VGM with Ok.

The log “Handsfree_Disconnect_WithoutA2dp_IOS”(Phone Log) and handsfree_disconnect_without_A2dp(Cypress log).

Note : We have also tried not to send AT+VGS after SLC connection but the behavior was still same.

Observation 3:  Based on Attachment “handsfree_disconnect_3_withoutANCS”

I tried disabling the ANCS profile but still the disconnect was observed with same error.

Could you please help us to resolve this issues.

Note : “bluetoothd-hci-latest_a2dp.pklg” this is IOS log which can be opened in any MAC OS with PACKET logger.

Hi:

    the tx power  of  bt mesh modules which we  are  using   is  too  weak. so  I want to  use the API  wiced_bt_set_tx_power to enhance the  tx power.

   however there is no  improvement  in transmit power. so  I  use the  API wiced_bt_dev_read_adv_tx_power(wiced_bt_dev_cmpl_cback_t *p_cback) to read the tx power. the tx power is 0. so  I guess  the  tx  power  is  not  set  successfully

thanks!

mandy

Hi:

  as  we know, the  spi  master initial API  is below：

void wiced_hal_pspi_init(  spi_interface_t spi,

                           UINT8           devRole,

                           UINT16          spiPinPullConfig,

                           UINT32          spiGpioCfg,

                           UINT32          clkSpeed,

                           SPI_ENDIAN      endian,

                           SPI_SS_POLARITY polarity,

                           SPI_MODE        mode,

                           UINT8           csPin);

there is a  input parameter（UINT8           csPin）of the wiced_hal_pspi_init， can  I  use the IO pin that does  not  belong  to the CYW20735  to control  the  SPI slave cs？

if  I use  the   IO pin of  another  MCU  as  the  CS  PIN ,  how to  fill  in  the  input  parameter   UINT8  csPin   of  the   wiced_hal_pspi_init  API

thanks！

Mandy

We are trying to support both A2DP Source and A2DP Sink roles on the same BT module(Cypress chip-CYW20706). We managed to connect Phone to sink application and source application to bt speaker. We are trying to route audio between the a2dp source and sink application through MCU. We are using I2S interface to send audio from the MCU to BT module.

It would be a great help if anyone could provide us the solution for the below queries:

1. Can we initialize separate audio buffer for both source and sink application? or if there is another way in which we can differentiate between the audio samples for both applications?

2. Is there any way we can get access to the I2S interface in the application? So that we route the I2S data to any of the source or sink application at the same time

I have an existing PSoC5 project, requires a Bluetooth (probably BLE) connectivity. The data rate is not too high, 115200bps is fine. I am searching for a module which can communicate via UART or SPI. What is the best option, WiCED or Creater? Also I don't understand the difference between WICED Studio and Smart versions.