Can we left pins VFBSMPS and VLXSMPS of STM32H747AII part if SMPS functionality is not used
We are not using SMPS functionality of STM32H747AII MCU. Can we left VDDSMPS, VFBSMPS, VLXSMPS pins unconnected?
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Resolved! EEPROM Emulator causes hard fault
MCU: STM32H753VI Scenario:Requirements specify that I must use internal flash memory to store error counters for our fault management system. I was going to directly write to flash memory using the built in HAL commands, but found that most people se...
STM32F401CC bootloader problem
Posted on June 28, 2017 at 14:27Hi all,i have two custom board with a microcontroller STM32F401CC in a 48pin package. One of these two micro is not working anymore due to a programmed option byte during a debug session. ST-link tell me this micro ha...
Resolved! Is the word(uint32_t) access atomic in shared memory in dual core STM32H7
Hi Friends,In STM32H7 MCU, both M7 and M4 can access shared memory, such as D3 SRAM4. I am going to use a D3 SRAM4 address as a place to share some status information between M7 and M4. If a 32bits word is defined shown as below, can the access from...
Resolved! STM32U073 flash wait states - wrong documentation
The reference manual RM0503 rev2 has inconsistent information about the flash wait states.Table 9 in §3.3.4 shows three options: 0WS, 1WS, 2WS (and, by the way, it says that all three of them correspond to "1 CPU cycle", which seems wrong).Instead, §...
Unstable SPI Slave
I have a custom board with a STMWB55 (master) and a STM32F031 (slave). They communicate over SPI using DMA. Unforturenately there are communication problems. In order to identify the problem I have simplified the setup. I have used a ST NUCLEO-F031...
Resolved! DAC output stability, performance over High temperature
I am using STM32G474VET3 controller.As i am using DAC out voltage for my application.So i want to know the DAC output stability, performance over temperature, & the temperature drift at Maximum junction temperature 150 °C.Also any other factors affe...
Resolved! This question is about HAL_SPI_TransmitReceive
This question is about HAL_SPI_TransmitReceive.If a slave starts sending 8 bytes of data after the 4th byte sent by the master, is it possible to use HAL_SPI_TransmitReceive without a dummy (ignore) buffer?We will be the master side.Our assumption is...
How to determine Rx event of USB CDC ACM
Hi,I use STM32U575.The STM32U575 works as a USB CDC ACM device and I implemented it in standalone mode.OTG_FS_IRQHandler is called when data is received from the host device.Is there a way to determine that when OTG_FS_IRQHandler is called, it is due...
STM32F439 - FMC interfacing SDRAM, NVRAM and ARNIC 429
Posted on July 28, 2016 at 07:53Hi,We are developing a display using STM32F439NIH6 Microcontroller in our design. We have the following technical queries:We have referred to your evaluation board design and we are interfacing STM32F439NIH6 with SDR...
