Interface and connectivity ICs

BlueNRG-1 Advertising stops

Hi, i`m having an issue with BlueNRG-1. It is configured to advertise every 10 seconds. However, advertising stops after hours, and I can´t connect to the device again. I can see no radio activity on spectrum analyzer when this happens. Any idea abou...

How check Ethernet? I'm receiving frames on RXD0, RXD1 and assertion of CRS_DV (RMII interface) but any connection can be performed.

Hello, I have designed a PCB with a STM32F746VET6 microcontroller and LAN8742A physical interface and magnetics. I'm not an expert in Ethernet and I'm not achieving to make it works. I want to validate this design and I'm trying to do a ping to the d...

BLE mesh app hangs in "waiting for the capabilities" - cannot provision nodes

I have two STM32WB55 nucleo boards, and I have built the BLE_MeshLightingDemo from en.stm32cubewb_v1-4-0.zip (STMCubeWB version 1.4.0). I loaded the stm32wb5x_BLE_Stack_fw.bin, and built the demo with IAR. After factory reset I see the node in the de...

STUSB4500QTR as voltage regulator?

Can I use STUSB4500QTR pin 23 (VREG_2V7) as power source for low power MCU? Max current consumption would be 0.5mA, avg current consumption would be a few uA.

When operating from STM32H745 to Timer Interrupt, Error writing NAND Flash Memory .

​- MCU : STM32H745 - NAND Flash Memory: W29N02GV- STM32H7xx HAL Driver version number : V1.6.0​Using STM32H745 FMC to NAND Flash Memory during operation test, Error on write NAND Flash if Timer Interrupt 1KHz is set above, Normal operation on write N...

BlueNRG-2 - how to switch on the LS RO oscillator with working LS XO oscillator without external reset (RESETn pin) or power cycling after firmware updating over "OTA"? The chip is BlueNRG-232 (it reports a "chip version" 1.0.0).

We use BlueNRG-2 in custom sensor. The original firmware uses LS XO (32 kHz crystal). But we need to have ability to choose the LS "RO" or "XO" after firmware updating over "OTA" (FOTA). It seems that if LS XO has been turned on once then the LS RO i...

BLE Mesh on BlueNRG-1 w/Proxies?

I have an existing phone app (using the traditional GATT system), and I would like mesh-enable my products so that if the products can see each other, then the phone can connect to and control any node (so, not so much an automation system but a rela...

Are ST Micro BLE solutions susceptable to SweynTooth issues?

Our Director of Quality made us aware of a BLE security issue called Sweyntooth. See: https://gbhackers.com/sweyntooth/ and https://www.wired.com/story/bluetooth-flaws-ble-internet-of-things-pacemakers/  Per the articles, it looks like STMicro's inst...

How do i know which is push button and led on stm32f373rb