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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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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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verify layout of L7805ACV

Posted on August 28, 2017 at 10:17Hello sir,we are manufacturing automotive product.we would like to verify our PCB layout for L7805ACV.please go through it and revert if any suggestion on layout.here we attached layout as well as ckt document regar...

Bluetooth low energy scan mode

Posted on August 17, 2017 at 08:24Hi,I am using Nucleo l053r8 development board with x-nucleo-idb05a1 extension board which has SPBTLE-RF bluetooth low energy module. I am want to make application that can scan for ble devices and reads its advertis...

m h by • Associate
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  • 2 replies
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SPWF01S firmwareversion

Posted on August 21, 2017 at 15:49Hi, I have a question about the firmware version of the spwf01S modules.AT+S.STS=version♯  version = 150410-c2e37a3-SPWF01SWhen I read the version, this appears. This is the version is 3.4. Is there a way to get 3.4...

lattner by • Associate II
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