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denizcan · 2021-03-21

I want to generate waveform for 8 channel WS2812 leds using STM32F103. This device uses pulse with to transfer bits.. The longer pulse means 1, the shorter means 0.. Because I want to generate 8 channel wavefrm, I configured 3 DMA's, one moves 0xFF t...

denizcan · 2019-06-19

I've been developing my own I2C interface. When the BTF is set, I issue STOP. However, the interrupt routine is repeatedly called until the STOP is generated..In document it says that BTF is cleared by hardware after a start or stop condition in tran...

denizcan · 2021-04-21

I wish, at least you completed the Big Sur compability.. After Big Sur, IDE is full of bugs.. That's why I stopped using Macbook, resurrected an old PC laptop which is pain in the back..

denizcan · 2021-03-21

Ok, it's definitely the prescaler.. When I write the following code, first pulse is generated correctly as well..Enabling disabling the timer caused TIM2 to run at full speed and reload the prescaler, which is done here by setting EGR's UG bit..I nee...

denizcan · 2021-03-21

This is the initial configuration just before dataTim's enable..If the compare's are set to 2 and 3 how can they generate DMA request at start? My mistake might be prescaler is being updated after first cycle.. It looks like TIM2 runs at full speed f...

denizcan · 2019-06-19

It looks like, reading DR back, right after setting START|STOP flag does the trick.. Is it a valid solution?Now I only see single 6 (TXE=1 BTF=1 condition).. Than 2 comes, which is START=1

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When timer is enabled it creates initial DMA request even CNT is 0

STM32F4 I2C BTF interrupt is generated repeatedly until the stop is generated

Re: STM32CubeIDE compatibility with macOS & Apple M1 Chip

Re: When timer is enabled it creates initial DMA request even CNT is 0

Re: When timer is enabled it creates initial DMA request even CNT is 0

Re: STM32F4 I2C BTF interrupt is generated repeatedly until the stop is generated