About zd9797

zd9797 · 2024-09-10

Hi Folks, I'm working on pattern generation on GPIO pins and I've done it successfully using bare-metal programming approach. I used TIM1 to trigger DMA2 to take data from a buffer and send it GPIOA->BSRR. But when I try to change the timer from TIM...

zd9797 · 2024-07-23

I'm trying to connect an encoder with STM32F407VGT6. The encoder sends out A,B and Z pulses out. I can read both A-B and Z pulses using TIM2 and TIM3 respectively. Timer 2 is in encoder mode and TIM3 is in input PWM mode. I want to know if I'm correc...

zd9797 · 2024-09-12

That makes sense. Thank you so much!

zd9797 · 2024-09-11

Oh is that why it was failing! I brought up this issue with my senior and I was afraid of this answer. DMA1 does not have direct access to the APB1 bus, which is why the transfer is failing - Is this intentional or a flaw? So is there a way to know w...

zd9797 · 2024-09-11

Thanks Bob! I'll definitely look into that. :)

zd9797 · 2024-07-24

Thanks for your reply. But now I'll have to handle this in interrupt service routine which is not what I want. I made TIM3 work as input pwm capture and it gives me the "delta of CCR1" as period is the time between two edges. What do you think?

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STM32F407 DMA1 Trigger Issue

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