Search found 148 matches

by acronis
Sun Dec 17, 2017 2:27 pm
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 7
Views: 136

Re: generator on a timer with an interval of 25 nanoseconds ?

I understand You correctly, that the more frequency of 625 kHz at the timer without overclocking out any ways ?
I need a simple generator of rectangular pulses

And without the use of PWM it is possible to obtain a high speed of generation ?
by acronis
Sun Dec 17, 2017 4:26 am
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 7
Views: 136

Re: generator on a timer with an interval of 25 nanoseconds ?

Hello RogerClark !

Whether correctly I understood You that it is necessary to do so ?
timer.setPrescaleFactor(4);

If not, tell me how to do it. I really need the PWM frequency is much faster than 1 MHz!
by acronis
Sun Dec 17, 2017 4:20 am
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 7
Views: 136

Re: generator on a timer with an interval of 25 nanoseconds ?

Hello stevestrong !
I included the line pinMode(PA1, PWM) in setup().

What code is necessary to enter into
void timer_interrrupts()
{
???
}

for this to work ?
by acronis
Sun Dec 17, 2017 4:15 am
Forum: General discussion
Topic: Example FTP server for stm32 on the WizNet 5500 ?
Replies: 1
Views: 29

Example FTP server for stm32 on the WizNet 5500 ?

Hello .

Please tell me the link or code on the ftp server for stm32 on the WizNet 5500 ?
by acronis
Fri Dec 15, 2017 12:39 pm
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 7
Views: 136

generator on a timer with an interval of 25 nanoseconds ?

Tell me a simple code example for the squarewave generator on a timer with an interval of 25 nanoseconds (25 MHz) Board STM32F407 BLACK. Did so, but at least 1 microsecond. It should be faster ! void setup() { timer.pause(); timer.setPeriod(1); timer.setChannel1Mode(TIMER_OUTPUT_COMPARE); timer.setC...
by acronis
Sat Nov 25, 2017 9:32 am
Forum: STM32F4 Boards
Topic: [libmaple] Black F407VET6
Replies: 117
Views: 5311

Re: [libmaple] Black F407VET6

I2C (Wire) is finally working
WOW !
SUPER !!!

Steve - thank you so much !
by acronis
Thu Nov 16, 2017 1:31 pm
Forum: General discussion
Topic: sinusoidal oscillations - average period
Replies: 3
Views: 144

sinusoidal oscillations - average period

Hello . There is an array of records sinusoidal oscillations (approximately ten waves). Could you tell me the simplest algorithm to calculate the average period. For example, I found the first the highest point of the first wave, how to find the highest point of the second wave ? as there is the rig...
by acronis
Wed Nov 08, 2017 1:59 pm
Forum: General discussion
Topic: [SOLVED] watchdog How to calculate the time ?
Replies: 4
Views: 103

Re: [SOLVED] watchdog How to calculate the time ?

Yes, Yes, I do.

I just needed to calculate the maximum possible delay watchdog timer for STM32F407
by acronis
Wed Nov 08, 2017 1:54 pm
Forum: STM32F4 Boards
Topic: [libmaple] Black F407VET6
Replies: 117
Views: 5311

Re: [libmaple] Black F407VET6

Eh... I don't have enough I2C to connect various sensors to the Board STM32F4 BLACK.... You are amazing ! I hope that You will eventually make ! Thank YOU ! Thanks to You I have a lot of things connected to this boards: ADC,RTC,display (FCSM LCD-16bit), Ethernet (W5500), SD card (sdio), NRF24L01 , s...