About LuizGEnger

LuizGEnger · 2022-03-22

I want to implement the oversampling feature in the ADC read to get a better resolution for my values. Data is transmitted directly using DMA.If I enable oversampling, I can correctly get an average value when putting a 16x oversampling ratio (the ma...

LuizGEnger · 2022-03-17

Which is the best approach to manage the use of DMA and "control" the flow of data? Implementing some interrupt when the buffer is filled? Is it possible to put one channel of the DMA on "hold" while the other has full priority? Or two DMA are requir...

LuizGEnger · 2022-04-19

Hello Olivier,I am having a similar problem, with data clipping to 32767. Indeed the documentation is pretty deficient. In my case, I am using single-ended offset mode as well, to connect the negative input internally to 0 V. What's different is that...

LuizGEnger · 2022-03-22

I did read the AN4629, but the way it is written does not make it clear for me the information you're providing. Also, the section from RM0394 below makes me think that the oversampling ratio (that in RM0394 is called N and in AN4629 is called OSR, g...

LuizGEnger · 2022-03-22

When creating the project I selected the NUCLEO-STM32L432KC board. The MCU model is STM32L432KC6U. Several firmwares have been uploaded and used so it's all good. CubeMX does allow me to select ADC_RESOLUTION_16B, but then I get an error when buildin...

LuizGEnger · 2022-03-22

So instead of right shifting, I should divide in software?According to this training resource https://www.st.com/content/ccc/resource/training/technical/product_training/1e/0f/65/34/7e/b0/4e/ca/STM32L4_Analog_ADC.pdf/files/STM32L4_Analog_ADC.pdf/jcr:...

LuizGEnger · 2022-03-21

Thanks! I implemented part of it and it works. I decided to copy only the first half of the ADC DMA buffer to a work buffer (HalfConvCplt sets a flag to start the copy in the while(1) loop). At the moment the second half is ignored, just to ensure th...

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STM32L4 ADC using DMA and oversampling - 16 bit value

With a STM32L4, I would like to use one channel of DMA1 to read the ADC and another channel to transfer the buffer from memory to UART. Basically, I would like to have some sort of oscilloscope (for positive values only and below 1 MHz signal).

Re: STM32F373 SDADC configuration mystery, how should it work

Re: STM32L4 ADC using DMA and oversampling - 16 bit value

Re: STM32L4 ADC using DMA and oversampling - 16 bit value

Re: STM32L4 ADC using DMA and oversampling - 16 bit value

Re: With a STM32L4, I would like to use one channel of DMA1 to read the ADC and another channel to transfer the buffer from memory to UART. Basically, I would like to have some sort of oscilloscope (for positive values only and below 1 MHz signal).