Ask questions, find answers, and share insights on STM32 products and their technical features.
I need to use DMA to forward input capture values from the timers to the DAC output register. The input capture values represent the period of the input signal, which makes it work as an FM demodulator. If I can route the captured values to DACs and ...
I'm using CubeMX. With the new unit, I had to set ENVR and clear HIZ in VREFBUF_CSR in user code in order to use the internal reference. In this config, I can see the output value change DC level, but with a 700khz noise tone on it that amplifies al...
I’m using an STM32G473 and I have TIM20 CHANNEL1 configured in output compare mode. When the compare value is reached, I want to move CNT values from TIM1, TIM5, TIM6, TIM7 and TIM15 to 5 static locations in memory.I’m not sure if I can use DMA to st...
I need to load the TIM1 CCR registers into the DAC1 outputs on an STML432KC. I have this working with the line DAC1->DHR12R1 = TIM1->CCRx executing in a loop. I'd like to substitute with DMA. Others have suggested that I can do this with the availabl...
I began using an STM32G473 and the DAC outputs are acting funny. I have VREFBUF configured as an internal reference. Since I'm not using VREF+ as an output, I left the pin unconnected. I posted a thread about it and it was recommended that I connect ...
I’m using CubeIDE, which lets me configure a timer to trigger a DMA request triggered by an output compare that transfers that timer's value to memory. I want to modify the generated code such that a separate timer’s value is sent to memory instead.W...
I am using CubeIDE, and I want an output compare event on TIM8 CH1 to trigger a DMA transfer to a single memory location. I’ve selected ‘Peripheral to Memory’ as the direction, but I’m observing the contents of the memory location being copied to the...
I seem to remember a way to make a reset event set a timer’s value to a non-zero value. However, I didn’t see anything in the docs for the part I’m using so I’m not sure if this is a feature in STM32 parts. Is it?An alternative is a DMA trigger on th...
I have a variety behavior that didn't occur on the last version of my board. I'm trying to figure out if the board has an intrinsic electrical fault, or if incompatible programming is making the pins fight with themselves to generate what I'm seeing....
I’m using CubeIDE and I need to load a single memory location of the FMAC input buffer via DMA with readings from a single ADC channel that is triggered by a timer output compare. DR register on the ADC shows a stuck value indicating conversions are...
