Interface and connectivity ICs

Ask questions and find answers on connectivity ICs, focusing on protocols and I2C challenges on STM32 Nucleo boards and BlueNRG products.

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Forum Posts

WFDFPN8 (MLP8) 2x3mm land pattern

Posted on September 07, 2017 at 17:37Hi, I'm trying to design a PCB with the M95640-DRMF3TG (AKA M95128-A125) Serial EEPROM, and cannot find a land pattern for the part.  The best thing I can find is TN1171 (Technical Note), but it does not give any...

BlueNRG-2 RX low sensitivity

Posted on September 06, 2017 at 21:49Hi All,I am wondering why the newly launched ST BlueNRG-2 only has an RX sensitivity of -88 dBm and not something closer to the competitor products like the Nordic nRF52 (-95 dBm)? Even the old nRF51 has an RXsen...

SPWF04 Error:50:Unable to access filesystem

Posted on June 29, 2017 at 10:05Hi I am using a SPWF04, and I am connecting it to PC using STM32 Nucleo as USB2UART bridge ( This is running WiFi VCOM , STM32L476RG-Nucleo project.bin )I am working on a project where I want to have a webpage on the ...

Marc ZK by Associate II
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SPWF04 - ERROR : UNABLE TO MOUNT

Posted on August 31, 2017 at 00:25I just did an AT+S.FSUPDATE and it fetches the webserver data correctly, but at the end of the chunk writing process it complains that it is Unable to mount volume. Any suggestions ?AT+S.FSUPDATE=e,192.168.1.119,/ou...

SPWF04 - Station Disassociated: ... :1

Posted on September 01, 2017 at 12:24I have some trouble with getting disassociated because I reload one of my pages very often to get the newest SSI information on the webpage from the microcontroller. I get the message: '+WIND:72:Station Disassoci...

SPWF04SA TLS socket connection problem

Posted on August 31, 2017 at 12:55I have a couple of weeks trying to make a TLS connection and it has been practically impossible. I am using the SDK for SPWF04A (STM32CubeExpansion_WIFI1_V3.0.2) on a NUCLEO-F401RE, and compiling the code into IAR. ...

Service changed indication

Posted on May 19, 2017 at 13:04The Generic Attribute service (0x1801) has Service Changed characteristic (0x2A05). They are added automatically by Aci_Gatt_Init. Does BlueNRG-MS stack send indications with this characteristc when services and charac...

grzegorz by Associate III
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