How fast can it go?

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dannyf
Posts: 446
Joined: Sat Jul 04, 2020 7:46 pm

How fast can it go?

Post by dannyf »

Just tried to see how fast I can run my STM32F103 (genuine chip) while blinking a led and send strings over uart.

128Mhz! (8Mhz crystal with the pll running at 16x).

Pretty amazing for a chip spec'd at 72Mhz.
ag123
Posts: 1653
Joined: Thu Dec 19, 2019 5:30 am
Answers: 24

Re: How fast can it go?

Post by ag123 »

if you do dma, then you can blink the led with your code.
and if you do dma and use a hardware timer to blink the led,
then your stm32 can simply run an idle loop and count interrupts :lol:

Code: Select all


void loop() {
	asm("wfi");
}
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