About Charles P

Charles P · 2023-05-26

EDIT: Hello, everyone. My code issue seems to have resolved itself after much changing, but I never did find out what was happening. My real question was answered: There are no likely circumstances that a higher-priority interrupt should not pre-e...

Charles P · 2021-12-06

In my configuration, the tick source for touchGFX is the LTDC vsync interrupt. This was the recommended configuration in STM32CubeMX. However, that means that ThreadX is doing its own thing while model::tick (e.g., TouchGFX) is also running. The Thre...

Charles P · 2023-05-30

Hi, JW. I should have made a video at the time because it was really quite straight-forward. However, now I no longer see the problem and I don't know what I did to change it.

Charles P · 2023-05-30

I'll take that as a compliment!

Charles P · 2023-05-30

Hi, Pavel. Thank you for responding. I have enabled the Preemption Priority, which is why I'm confused. "I have a priority 2 timer TIM1, a priority 6 timer TIM4, and priority 5 EXTI9_5." TIM1 will preempt EXTI9_5, but not TIM4. It's very weird t...

Charles P · 2023-05-30

Hi, TD. Thank you for responding. This code is designed to test priority of interrupts, so the purpose of the while loop is to lock up the TIM4 interrupt and verify that TIM1 continues to fire. However, that is not happening. If TIM4 enters it's ...

Charles P · 2023-05-30

Hi, MM. Thank you for responding. This code is designed to test priority of interrupts, so it is designed that if TIM4 is entered, the code never leaves it unless a higher priority interrupt occurs. It should be that if I press the button before TIM4...

User statistics

User Activity

Higher priority timer will preempt lower priority external interrupt, but will not preempt a lower priority timer.

Is it okay for TouchGFX function model::tick() to share resources with ThreadX, even though ThreadX is not aware of model::ticks() existence? Can they use the same mutex?

Re: Higher priority timer will preempt lower priority external interrupt, but will not preempt a lower priority timer.

Re: Higher priority timer will preempt lower priority external interrupt, but will not preempt a lower priority timer.

Re: Higher priority timer will preempt lower priority external interrupt, but will not preempt a lower priority timer.

Re: Higher priority timer will preempt lower priority external interrupt, but will not preempt a lower priority timer.

Re: Higher priority timer will preempt lower priority external interrupt, but will not preempt a lower priority timer.