About Amilton Rogério da Silva

Amilton Rogério da Silva · 2020-08-26

Hi, I am facing an problems that I have never seen before with local variables being allocated at the same addresses of global ones. In the attached image I show an example of a local variable with the address of another variable in the STEmwin libra...

Amilton Rogério da Silva · 2020-04-05

Hi, How to exit from qspi memory mapped mode?Thanks in advance.

Amilton Rogério da Silva · 2019-12-17

Hi, I'm getting transfer error from DMA interrupt by the attempt to get image from the DCMI. Already lost some days on that and don't know what could be the problem. I've tested successfully the camera and the initialization code in STM32F429-DIS...

Amilton Rogério da Silva · 2019-07-24

Hi, What could be possibly wrong to make the RTC hour keep count up above 23 hour. With some boards it works correctly, going to 00 from 23. but some other keep count up 24, 25... How is that possible? There is any configuration to do that?

Amilton Rogério da Silva · 2018-11-23

Hi,I am doing tests with some CMOS cameras and in one of them, GC0310, the communication interface is SPI, not DCMI, but with one SCK output and two data outputs. The camera continuously sends the frame of the image. The information in the datashee...

Amilton Rogério da Silva · 2020-08-27

Solved. Many thanks to all. Using the calloc it was possible to see that the function needed more HEAP memory, being necessary to allocate 70kB (0x110000) for the calloc not to return NULL, checking the function I estimated the consumption of 35kB i...

Amilton Rogério da Silva · 2020-08-27

Thanks for the tips, I'll check.I started looking for overflow that are the most common error for this type of hardfault and it was running step by step, and checking the limits I noticed the tag with the name of a global variable, which in this case...

Amilton Rogério da Silva · 2020-08-27

Thanks for the tip. I will try to use the native malloc to see the effect. I used a customized malloc that, at first, seemed to have resolved since address overrides did not appear in this function, but this "mymalloc" uses SRAM_D1 and not the DTCM ...

Amilton Rogério da Silva · 2020-08-26

"Check you've initialized the structures properly"I will review the structures, they were not made by me. It is difficult to imagine what kind of errors in a structure could mess with the allocation of the starting address of the heap memory at the e...

Amilton Rogério da Silva · 2020-08-26

Hi, I'm sending it to the screens in the attached file.

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STM32H7 - SRAM issues - LOCAL VARIABLE ALLOCATED OVER GLOBAL VARIABLE ADDRESS

QSPI - How to exit memory mapped mode

DCMI DMA transfer error with STM32H743

STM32H743 / STM32H750 RTC BUG - hour keep counting above 23

How to read data from a dual line output MASTER SPI (or MASTER Quad-SPI) camera?

Re: STM32H7 - SRAM issues - LOCAL VARIABLE ALLOCATED OVER GLOBAL VARIABLE ADDRESS

Re: STM32H7 - SRAM issues - LOCAL VARIABLE ALLOCATED OVER GLOBAL VARIABLE ADDRESS

Re: STM32H7 - SRAM issues - LOCAL VARIABLE ALLOCATED OVER GLOBAL VARIABLE ADDRESS

Re: STM32H7 - SRAM issues - LOCAL VARIABLE ALLOCATED OVER GLOBAL VARIABLE ADDRESS

Re: STM32H7 - SRAM issues - LOCAL VARIABLE ALLOCATED OVER GLOBAL VARIABLE ADDRESS