Forum Posts
How to read the boot enabled/disabled bits in the user configuration option bytes of an STM32H7?
Hi all,in the STM32CubeProgrammer section Option bytes (OB) there's one group called "user configuration". This group list the two checkboxes BCM4 and BCM7 to enable/disable booting each core. I assume that there are two bits in some R/W configuratio...
Resolved! STM32L4 : IWDG wake up device in shutdown mode ?
Hi !I'm using the stm32l452RE mcu and I use the shutdown mode. I also use the watchdog (IWDG) to reset the system if an error occurs. This IWDG is set to 4s. When I go in shutdown mode, accordly to the docs, IWDG should be off because it is clocked w...
STM32F732 Wakeup Latency
Hi Our custom board had some issues for STOP mode.Firstly, please see the following STOP mode code:(using GPIO EXTI to wake up MCU)HAL_PWREx_EnableFlashPowerDown(); HAL_PWR_EnterSTOPMode(PWR_LOWPOWERREGULATOR_ON, PWR_STOPENTRY_WFI); HAL_PWREx_Disable...
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 ...
Resolved! How to get back the original demo on the STM32L476 Discovery board?
I was using the preloaded demo for the STM32L476 Discovery board and everything was working, and then I followed the steps on the Getting started with STM32CubeL4 MCU Package user manual to try and run the first example. I followed the steps and once...
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 ...
