Interface and connectivity ICs

BlueNRG evt_gatt_attr_notification->attr_value leading zero bytes

I cannot find any related information for this.It seems like evt_gatt_attr_notification->attr_value always has 2 bytes leading zeros.This means if a write a char value with Attribute_Val_Length = 0x02 and Attribute_Val = 0xCAFE I get a attr_value of ...

BlueNRG-2 bluetooth connection to standard bluetooth dongle in a standard PC

Hi,I want to connect the BlueNRG-2 evaluation board (STEVAL-IDB008V2) to a standard bluetooth dongle in a standard PC and let the PC receive some data like numbers between 0 and 255 from the BlueNRG-2 device. Can’t find out how. Can anybody help?

Can i build a L2CAP channel using "LE Credit Based Connection request" signalling command in X-NUCLEO-IDB05A1?

Hello Experts,I am looking to establish a L2CAP "CONNECTION-ORIENTED CHANNELS IN LE CREDITBASED FLOW CONTROL MODE" using "LE Credit Based Connection request" signalling command.I am using two X-NUCLEO-IDB05A1 boards to build the connection.After I se...

What is the main difference in Interrupt and Event mode if I am using sensor on GPIOs'.

I am using proximity sensor as Interrupt on STM32F4 board .My goal is that when the GPIO is set than Interrupt or event (which is best in both of them) is generate and work can be performed by MCU.

When I am going to debug my code why such type of error come ?

this same thing happening with two board different board of same family.

Client of Generic On/Off, Sensor Model

I found that I can make vendor model client with BluenrgMesh_SetRemoteData(), BluenrgMesh_ReadRemoteData() functions using BlueNRG embedded SDK.However, these functions looks only for vendor models. Are there any APIs to make standard models client l...

S2LP and AFC_CORR register to get frequency offset.

After receiving a package I read out the AFC_CORR register. This value is not very stable, even if packages comes from the same sender.So I have 2 questions:How do I get the frequency offset in Hz from this register?Why is this not stable.best regard...

the rtc m41t62 works normaly after powon(with a battery cr1220 3V).but sometimes after a few days works wrong.

the date and time both go wrong ,like:18-12-24 16:48:01(a right time),turns to 55-04-102 35:18:01(a wrong time)

Hello guys! I am using stm32 bluepill microcontroller and i was wondering whether you know where i can find an example for websocket using esp8266 wifi module via arduino ide. I need to give info about potentiometer state on the server. Thanks in advance

Is there some way to get 'SPBTLE-RF'. be discoverable again, without reset?

I have done a Bluetooth server that works well.The client is connecting, interacting with the services and disconnecting.On the disconnecting procedure, the server starts the command "Aci_Gap_Set_Discoverable".In some cases, when the connection is no...