About Miro Nohaj

Miro Nohaj · 2014-02-18

Posted on February 18, 2014 at 09:01 Hello all, I've run through couple of SPI DMA threads here, but I didn't find what I was looking for... On my STM32F103 I'm sending data to host over SPI: - my STM32 acts as SPI slave - SPI trans...

Miro Nohaj · 2013-05-20

Posted on May 20, 2013 at 09:18Hello,I'm running my code on STM32F103 chip, I've set up a PWM output from timer1 with period of 200 ms, pulse width 5 ms, it's working and can be seen with a scope on GPIOA_8. The thing is, that I want to do something...

Miro Nohaj · 2014-02-25

Posted on February 25, 2014 at 10:14''Okay, and if you try to avoid the underruns by allocating big enough buffer for both rx and tx, will your problem persist?''I would have to test it (I might report on that later), but got it currently working wi...

Miro Nohaj · 2014-02-21

Posted on February 22, 2014 at 00:03''For an SPI data transfer the count should always be exactly the same. Data is clocked in and out on different edges of the same clock pulse. If you don't see equal DMA counts then you have a program bug.''I wo...

Miro Nohaj · 2014-02-20

Posted on February 21, 2014 at 08:40waclawek.jan wrote:''Without seeing the relevant portion of your code and more detailed description of the symptoms it's hard to judge what is the cause of your problems.''The whole code is too large to spot the p...

Miro Nohaj · 2014-02-19

Posted on February 20, 2014 at 04:56 Hello all, I just want to let you know, that I sort of found a workaround / solution for the problem, and it's an extra IF between stopping DMA and enabling DMA again, it just checks if some WORD wasn'...

Miro Nohaj · 2013-05-21

Posted on May 22, 2013 at 08:29I've found the problem this morning. It looked like something would be in TIM1->RCR because the UIF wasn't set on every update, but I didn't set anything and the RCR value after reset should be 0. I took a look with de...

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Checking for finished SPI / DMA transfer - missing data?

Timer overflow when in PWM mode?

Re: Checking for finished SPI / DMA transfer - missing data?

Re: Checking for finished SPI / DMA transfer - missing data?

Re: Checking for finished SPI / DMA transfer - missing data?

Re: Checking for finished SPI / DMA transfer - missing data?

Re: Timer overflow when in PWM mode?