STM32 MCUs Products

What is the maximum number of end devices that can be connected to a coordinator in a Zigbee network.

Hello,I am using Zegbee messaging cluster on STM32WB55 to send messages between Zigbee endpoints and a coordinator.I would like to know the maximum number of end devices that can be connected directly to the coordinator and how high this number will ...

STM32H7 HAL_UARTEx_ReceiveToIdle_DMA fails if there are already transmissions on the UART

I have this code that initiates my UART channels with DMA at startup: if( HAL_OK == HAL_UART_RegisterRxEventCallback( m_configuration.huart, callbackRx )) {   if( HAL_OK == HAL_UART_RegisterCallback( m_configuration.huart, HAL_UART_TX_COMPLETE_CB_I...

chip enters NMI handler with debugger attached

I am having issues debugging a STM32H7 series chip (STM32H755).When I connect using multiarch-gdb and run `mon swdp_scan` it crashes both cores. I am using a BMP debugger. I end up in the NMI handler. I can see via the external LEDs in the code that ...

Unexpected PWM pulse using DMA

STM32U5 FDCAN in normal mode seems not to receive the Frames

I am trying to evaluate the FDCAN function on a STM32U5 and somehow I don't manage to make it work .I can receive a frame when I am in (external) loop back mode and if the FDCAN transmits the frame but I cannot receive a frame in normal mode from an ...

Problems using ADC (with DMA) in stm32H7 boards

Hi,I'm trying to perform analog-to-digital conversion using the DMA function on dual-core STM32H7 board series. Basically, I can not make it work. I have tried with other STM32 boards (like STM32L476RG for instance) successfully but it seems that the...

STM32H7B3i-EVAL Determining NOR Flash timing

Hello,I have 2 EVAL board, one STM32H743i-EVAL2 and one STM32H7B3i-EVAL.Both have the same NOR Flash chipset MT28EW128.I'm using the function HAL_NOR_ReadBuffer to read data from the NOR.but, "sometimes", the data I read are corrupt.I made my project...