It's over, it's over, it can't be completed. The STM32F103 generates a square wave with a pulse width of 1us to 80us. Is it not possible?

秋天的琴湖

It's over, it's over, it can't be completed. The STM32F103 generates a square wave with a pulse width of 1us to 80us. Is it not possible? [Copy link]

STM32F103 generates a square wave with a pulse width of 1us to 80us. Is it not possible? Is it better to use CPLD or FPGA?

damiaa

The stm32 GPIO flip can reach 50MHz.

CPU speed, the maximum CPU speed is 72mhz .

You just asked for 1M~12.5k. There shouldn't be any problem.

This can be achieved using a timer interrupt.

littleshrimp

It should be fine. Is your 1-80us adjustable? Is it the same frequency but different duty cycle, or the same duty cycle but different frequency?

bigbat

damiaa posted on 2022-11-20 22:02 The stm32 GPIO flip can reach 50MHz. The speed of the cpu, the maximum speed of the CPU is 72mhz. You are asking for 1M~12.5k. Should...

The timer may not work, PWM should be better. The 72M MCU has used 10uS timing to make things, which is not reliable.

wangerxian

There should be no problem with the STM32F103 outputting 1us.

秦天qintian0303

The microcontroller has tried to output 1.28Mhz pwm, and the output of 1us should be OK

lugl4313820

Is there something wrong with the equipment that detects the waveform and it is not detecting it?

tagetage

There is no problem with all the way. The key words are crystal frequency and PWM.

秋天的琴湖

tagetage posted on 2022-11-21 11:25 If it's all the way, there is no problem at all. The key words are crystal frequency and PWM.

I want to implement two paths.

Gen_X

Only PWM can be used. I don't know how high your adjustment accuracy is. If the accuracy is too high, there may be problems.