Search found 144 matches

by acronis
Fri Dec 15, 2017 12:39 pm
Forum: General discussion
Topic: generator on a timer with an interval of 25 nanoseconds ?
Replies: 0
Views: 14

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: 5283

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: 102

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: 5283

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...
by acronis
Wed Nov 08, 2017 1:25 pm
Forum: General discussion
Topic: [SOLVED] watchdog How to calculate the time ?
Replies: 4
Views: 102

[SOLVED] watchdog How to calculate the time ?

Hello.

In my program the watchdog timer .
Tell me how is the time in iwdg_init.
I need to record the maximum time for STM32F407VET6.

I don't know how to count, what frequency ?
by acronis
Wed Nov 08, 2017 1:07 pm
Forum: General discussion
Topic: [SOLVED] SPI STM32F407 not working
Replies: 14
Views: 260

Re: SPI STM32F407 not working

Now it is clear.
And then I thought that there really is 1 000 KHz.
Thank You again !!!
by acronis
Wed Nov 08, 2017 12:41 pm
Forum: General discussion
Topic: [SOLVED] SPI STM32F407 not working
Replies: 14
Views: 260

Re: SPI STM32F407 not working

Steven , and how to make 0.65625 MHz ?
by acronis
Wed Nov 08, 2017 12:35 pm
Forum: STM32F4 Boards
Topic: [libmaple] Black F407VET6
Replies: 117
Views: 5283

Re: [libmaple] Black F407VET6

Hello steven.
Not if You managed to adapt the I2C for this Board?