About RBack.1

RBack.1 · 2023-08-05

I am using the STM32F746VET6. I am aware that assembly instructions do not have a guaranteed in execution time, however I am surprised how consistently inconsistent my inline assembly macro is behaving. I'm really hoping there is just a mistake in th...

RBack.1 · 2023-02-23

I am using the STM32F746VET6 which was setup with STM32CubeMX project. In the code it creates I see there's a STM32F746VETX_RAM.ld linker file and a #define VECT_TAB_SRAM to locate the IVT in RAM, but I don't see in MX where I specify that I want the...

RBack.1 · 2023-02-20

My test program for my STM32F746VET6 is extremely simple. Other than MX configuring the clock and GPIO, I only have a while loop that flashes some LEDS and then divides by zero. while (1) { /* USER CODE END WHILE */ uint32_t bobbycounter =...

RBack.1 · 2023-01-30

I am using a STM32F746VET6 to drive time critical signals on up to 14 pins. I am bit banging these signals in the ISR. I was surprised to find after a benign change I started to have jitter in these signals. I tracked it down to the ISR firing during...

RBack.1 · 2022-10-31

I have used MX up to this point to configure my peripherals. Even though I've manually configured these for most of my career, I'd prefer to keep using MX for this project since it's been successful up to this point. For some reason it doesn't show m...

RBack.1 · 2023-08-09

It's not the DWT that has jitter but the instructions in the loop to check it. You can't ensure that the DWT will hit the correct value on the instruction that checks it instead of the loop.A young engineer here did end up figuring out the problem, h...

RBack.1 · 2023-08-08

I looked at couldn't find the picture again. I passed your info about jitter onto the young engineer taking this on as a personal project and he says he did encounter that issue. I'm not sure what approach he's using now as a way to work around that ...

RBack.1 · 2023-08-08

Heh...you are correct that this is a problem I've been battling since taking over this code/PCB almost two years ago. It does show the problems when using the debugger or programming.However, yesterday a young engineer in my company figured out the p...

RBack.1 · 2023-08-06

I didn't post the code waiting for our ISR but it basically calls __disable_irq() then enters a while(1).We've been battling with this overcomplicated best for a while now which is good for our higher level algorithms but really bad at simple things ...

RBack.1 · 2023-08-06

We've been tearing our hair out trying to figure out what the difference is between the old and new code. We've disabled all of the advanced features we can disable in MX but our old code functioned as expected without doing that!We have tried unroll...

User statistics

User Activity

inline assembly macro inconsistent

Using MX to locate IVT in RAM

Why does my test program enter the HardFault_Handler when debugging but not when programming?

Timing issue when TIM10 interrupts HAL IWDG macro

STM32CubeMX does not show Baud Rate for SPI2 for STM32F746VETx

Re: inline assembly macro inconsistent

Re: inline assembly macro inconsistent

Re: inline assembly macro inconsistent

Re: inline assembly macro inconsistent

Re: inline assembly macro inconsistent