hi i have a problem where i want to get the stm to 480Mhz clock but in order to do that i have to set the Power regulator voltage scale to 0 but when i do this the micro controller bugs and i cant connect to it the programmer just say no stm32 found ...
I looked at both the datasheet and Oscillators design document for stm32 controllers. Both suggested the same speed for external Osciallaotrs for stm32F7 controllers that is 4-26 MHz.BUT, in the stm32cubeMx it gives you option to select external HSE ...
Referring to this discussion: https://community.st.com/t5/stm32-mcus-touch-gfx-and-gui/slow-fade-with-touchgfx/td-p/591072 I try to ask here since the problem seems not to be related to touchgfx. I try to riassume my problem.It seems that the access ...
I'm fairly new to low-power and sleep-mode applications of STM32H7 microcontrollers. I've been trying to read through the documentation, but I'm having trouble getting a whole picture idea of how this works, and connecting all the information from th...
I'm working on an application that requires a very fast UART speed. The STM32H7 allows a UART speed of 17 Mbps, which is just barely enough, but should work. However, other than the fast UART speed, I don't need to do a lot of processing. I would hav...
[This is a reconstruction of a thread I've started on Apr 7, 2017, but got lost in the two forum software transitions since then.]In STM32F40x and STM32F41x Errata sheet DocID022183 Rev 8, 2.1.13 Delay after an RCC peripheral clock enabling, there ...
Hello! I'm using USART with DMA and when I disconnect the Rx cable, sometimes the communication resumes and sometimes not. How can I always recover USART Rx?I tries reseting it with RCC using the line: RCC->APB2RSTR ^= RCC_APB2RSTR_USART1RST; // USAR...
I have a STM32F405 with a coin cell on VBAT and I haven't been able to get the Backup SRAM or RTC to preserve contents when removing main power. The same code works fine on another board that has a STM32F407. //Works on STM32F407 - Fails on STM32F40...
Hi,I am using B-L475E-IOT01A. I am wondering that MSI can be changed on the fly when it used as system clock source.In `HAL_RCC_OscConfig` from STM32L4Cube drivers code, it looks like ok. But I didn't find any relative information from l47xxx manual....
Hey there,I am facing a problem with the clocks on the STM32H755ZI. When I let a timer run at 50 kHz I get only smt. like 49.92 kHz out of it with sigma = 13 Hz. So there is at any frequency a steady offset of -1.2% and a sigma deviation of 0.03%. I ...
