About berendi

berendi · 2024-02-27

There is this errata for STM32G0B12.2.10 Prefetch failure when branching across flash memory banksDescriptionIn rare cases, the code prefetch may fail upon branching and function calls across flash memory banks,regardless of the DUAL_BANK and nSWAP_B...

berendi · 2020-06-03

I've created two USB MSC host applications with CubeMX (1.3.1) for two STM32H743 boards. One of them is a stock Nucleo-H743ZI2 using the OTG_FS interface, the other one is a custom board with STM32H743II using OTG_HS with the internal transceiver.The...

berendi · 2020-06-02

Executing this code sequence on a STM32H743ZI or STM32H743IIRCC->AHB3ENR |= RCC_AHB3ENR_QSPIEN; QUADSPI->CR = QUADSPI_CR_EN; QUADSPI->CCR = QUADSPI_CCR_FMODE_0 | QUADSPI_CCR_IMODE_0; QUADSPI->DR;i.e. indirect read with only an instruction phase, t...

berendi · 2020-04-26

RM0351 and RM0392 (and maybe others, haven't checked them all) contain this in the System clock (SYSCLK) selection sectionStatus bits in the Internal clock sources calibration register (RCC_ICSCR) indicate which clock(s) is (are) ready and which cloc...

berendi · 2020-04-18

Looking for the STM32G4 reference manual on the st.com website I can see that Version 4.0 is supposed to be available.But clicking on the PDF link gets me Rev. 3 of the document.

berendi · 2020-08-11

> Why is HTIF active even though I didn't enable its interrupt?So that one can poll it even when no interrupts are used. Someone might find this useful.> I need to spend cycles clearing the HTIF (and potentially the error flags too)You can clear all ...

berendi · 2020-07-29

Check the map file generated by the linker to see what objects are taking up that much space.

berendi · 2020-07-28

Find out the value of the stack pointer either by the method above, orvoid *stack = (void *)__get_MSP();and the top of the heapvoid * heap = sbrk(0);do both between the calls to vsnprintf() and HAL_UART_Transmit().If stack < heap then you have a prob...

berendi · 2020-07-27

This looks like a stack/heap overflow issue. Some toolchain (Keil or IAR I can't recall it now) is known to allocate too little space for stack+heap by default, the startup file for gcc gives all unused RAM to stack and heap, but it can be still tigh...

berendi · 2020-07-26

Yes, it should work. Omitting the glass layer and putting the finger directly on the PCB actually makes it easier to detect touches. You might have to adjust some threshold values and that is all.

User statistics

User Activity

STM32G0B1 jump across flash banks errata: what about interrupts?

USB MSC host - last sector is not written to the drive

STM32H7 reading QUADSPI->DR freezes the MCU after QUADSPI->CCR = QUADSPI_CCR_FMODE_0 | QUADSPI_CCR_IMODE_0;

STM32L4xx reference manuals System clock (SYSCLK) selection

RM0440 STM32G4 series reference manual revision on the website

Re: DMA_ISR with active bits even if I didn't enable the interrupts

Re: Can I find the end of memory in a bin file?

Re: PGSERR and PGPERR Problem

Re: PGSERR and PGPERR Problem

Re: STM32 TSC, silk screen as "panel"