STM32F0 ADC in DMA Mode and EOC/EOS Interrupts
According tot the datasheet, the ADC generates a DMA request at the end of each conversion:
Does the ADC use an interrupt to generate this DMA request? Or is it done in the background using hardware automatically? I am asking this today because in STM32CubeMX, you get to choose either the End of Conversion (EOC) or End of Sequence (EOS) interrupt.
I am wondering if choosing either EOC or EOS interrupt will have any effect on the ADC's ability to generate DMA requests.
stm32 dma adc stm32f0
asked Nov 22 at 19:05
Ken Lin
73110
|
show 3 more comments
According tot the datasheet, the ADC generates a DMA request at the end of each conversion:
Does the ADC use an interrupt to generate this DMA request? Or is it done in the background using hardware automatically? I am asking this today because in STM32CubeMX, you get to choose either the End of Conversion (EOC) or End of Sequence (EOS) interrupt.
I am wondering if choosing either EOC or EOS interrupt will have any effect on the ADC's ability to generate DMA requests.
stm32 dma adc stm32f0
asked Nov 22 at 19:05
Ken Lin
73110
It doesn't use interrupt to generate DMA request. Interrupt flag is set and the DMA request is generated by the same signal, but other than that it's independent.
– KIIV
Nov 22 at 21:37
To clarify this a bit more: ADC interrupt flag is set but it has no influence on your CPU core (if you haven't activated it).
– A.R.C.
Nov 23 at 6:58
@KIIV When you say "Is generated by the same signal", which signal are you talking about?
– Ken Lin
Nov 23 at 22:03
@A.R.C. So if I disable ADC interrupt, DMA requests will still be generated and served properly?
– Ken Lin
Nov 23 at 22:04
1
I see, so I don't need to worry about the short digital pulse that's used to generate DMA requests right? I just need to know that once everything is configured correctly, the ADC will handling generating a short digital pulse to send a DMA request automatically in the background.
– Ken Lin
Nov 24 at 23:02
|
show 3 more comments
According tot the datasheet, the ADC generates a DMA request at the end of each conversion:
Does the ADC use an interrupt to generate this DMA request? Or is it done in the background using hardware automatically? I am asking this today because in STM32CubeMX, you get to choose either the End of Conversion (EOC) or End of Sequence (EOS) interrupt.
I am wondering if choosing either EOC or EOS interrupt will have any effect on the ADC's ability to generate DMA requests.
stm32 dma adc stm32f0
asked Nov 22 at 19:05
Ken Lin
73110
According tot the datasheet, the ADC generates a DMA request at the end of each conversion:
Does the ADC use an interrupt to generate this DMA request? Or is it done in the background using hardware automatically? I am asking this today because in STM32CubeMX, you get to choose either the End of Conversion (EOC) or End of Sequence (EOS) interrupt.
I am wondering if choosing either EOC or EOS interrupt will have any effect on the ADC's ability to generate DMA requests.
stm32 dma adc stm32f0
stm32 dma adc stm32f0
asked Nov 22 at 19:05
Ken Lin
73110
asked Nov 22 at 19:05
Ken Lin
73110
asked Nov 22 at 19:05
Ken Lin
73110
asked Nov 22 at 19:05
Ken Lin
73110
asked Nov 22 at 19:05
Ken Lin
73110
73110
It doesn't use interrupt to generate DMA request. Interrupt flag is set and the DMA request is generated by the same signal, but other than that it's independent.
– KIIV
Nov 22 at 21:37
To clarify this a bit more: ADC interrupt flag is set but it has no influence on your CPU core (if you haven't activated it).
– A.R.C.
Nov 23 at 6:58
@KIIV When you say "Is generated by the same signal", which signal are you talking about?
– Ken Lin
Nov 23 at 22:03
@A.R.C. So if I disable ADC interrupt, DMA requests will still be generated and served properly?
– Ken Lin
Nov 23 at 22:04
1
I see, so I don't need to worry about the short digital pulse that's used to generate DMA requests right? I just need to know that once everything is configured correctly, the ADC will handling generating a short digital pulse to send a DMA request automatically in the background.
– Ken Lin
Nov 24 at 23:02
|
show 3 more comments
It doesn't use interrupt to generate DMA request. Interrupt flag is set and the DMA request is generated by the same signal, but other than that it's independent.
– KIIV
Nov 22 at 21:37
To clarify this a bit more: ADC interrupt flag is set but it has no influence on your CPU core (if you haven't activated it).
– A.R.C.
Nov 23 at 6:58
@KIIV When you say "Is generated by the same signal", which signal are you talking about?
– Ken Lin
Nov 23 at 22:03
@A.R.C. So if I disable ADC interrupt, DMA requests will still be generated and served properly?
– Ken Lin
Nov 23 at 22:04
1
I see, so I don't need to worry about the short digital pulse that's used to generate DMA requests right? I just need to know that once everything is configured correctly, the ADC will handling generating a short digital pulse to send a DMA request automatically in the background.
– Ken Lin
Nov 24 at 23:02
It doesn't use interrupt to generate DMA request. Interrupt flag is set and the DMA request is generated by the same signal, but other than that it's independent.
– KIIV
Nov 22 at 21:37
It doesn't use interrupt to generate DMA request. Interrupt flag is set and the DMA request is generated by the same signal, but other than that it's independent.
– KIIV
Nov 22 at 21:37
To clarify this a bit more: ADC interrupt flag is set but it has no influence on your CPU core (if you haven't activated it).
– A.R.C.
Nov 23 at 6:58
To clarify this a bit more: ADC interrupt flag is set but it has no influence on your CPU core (if you haven't activated it).
– A.R.C.
Nov 23 at 6:58
@KIIV When you say "Is generated by the same signal", which signal are you talking about?
– Ken Lin
Nov 23 at 22:03
@KIIV When you say "Is generated by the same signal", which signal are you talking about?
– Ken Lin
Nov 23 at 22:03
@A.R.C. So if I disable ADC interrupt, DMA requests will still be generated and served properly?
– Ken Lin
Nov 23 at 22:04
@A.R.C. So if I disable ADC interrupt, DMA requests will still be generated and served properly?
– Ken Lin
Nov 23 at 22:04
1
1
I see, so I don't need to worry about the short digital pulse that's used to generate DMA requests right? I just need to know that once everything is configured correctly, the ADC will handling generating a short digital pulse to send a DMA request automatically in the background.
– Ken Lin
Nov 24 at 23:02
I see, so I don't need to worry about the short digital pulse that's used to generate DMA requests right? I just need to know that once everything is configured correctly, the ADC will handling generating a short digital pulse to send a DMA request automatically in the background.
– Ken Lin
Nov 24 at 23:02
|
show 3 more comments
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It doesn't use interrupt to generate DMA request. Interrupt flag is set and the DMA request is generated by the same signal, but other than that it's independent.
– KIIV
Nov 22 at 21:37
To clarify this a bit more: ADC interrupt flag is set but it has no influence on your CPU core (if you haven't activated it).
– A.R.C.
Nov 23 at 6:58
@KIIV When you say "Is generated by the same signal", which signal are you talking about?
– Ken Lin
Nov 23 at 22:03
@A.R.C. So if I disable ADC interrupt, DMA requests will still be generated and served properly?
– Ken Lin
Nov 23 at 22:04
1
I see, so I don't need to worry about the short digital pulse that's used to generate DMA requests right? I just need to know that once everything is configured correctly, the ADC will handling generating a short digital pulse to send a DMA request automatically in the background.
– Ken Lin
Nov 24 at 23:02