MicroPython
ADC 2 and more #17786
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Hello, Do you know when the use of more than one ADC will be implemented ? Thanks Daniel |
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Replies: 1 comment 4 replies
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I found some information on Github. The management of more than one ADC has been put on low priority in 2015. After 10 years, maybe it's time to do it ? It seems the only µC that implement ADC 2 and 3 is the STM32H7. I will test it. |
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The 32F4 does have three ADCs as well. I had to manually set'em up in order to use them. That was quite a long while ago. And yes, there're many cases where that's the only option (like triple interleave 7.2Msps with DMA)
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Thanks for the quick answer. I don't know what viper is, can you explain shortly ? (maybe a link to an example ?) Also, where can I find the list of functionnal ADC channels ? |
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@micropython.viper A function decorator which enables a special way of writing significantly faster Python functions (closer to C-code) The µPy documentation provides a good overview.
A look into the source code should shed some light on the issue. Otherwise, a quick and dirty Python loop which tests all possible inputs (try/except) might be faster. |
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Thanks, I will check the viper, it could be useful. I have made the test (dirty loop). Here are my results. For both STM32F767 and STM32H753, I have 16 ADC channels (I mean, the function pyb.ADC() doesn't return the error that the pin is not an ADC pin). These channels are PA0 to PA7, PB0 and PB1, PC0 to PC5. Also, while making these tests, I discovered that the pins PF11 to PF13 and PH2 to PH5 are not recognised (error : Pin.cpu doesn't have pin X) on STM32H753. |
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Thanks, I will check the viper, it could be useful.
I have made the test (dirty loop). Here are my results.
For both STM32F767 and STM32H753, I have 16 ADC channels (I mean, the function pyb.ADC() doesn't return the error that the pin is not an ADC pin). These channels are PA0 to PA7, PB0 and PB1, PC0 to PC5.
Which means all channels that are linked to ADC 1 and 2 and none channels linked to ADC 3 only.
But probably only ADC 1 is used.
Also, while making these tests, I discovered that the pins PF11 to PF13 and PH2 to PH5 are not recognised (error : Pin.cpu doesn't have pin X) on STM32H753.
I don't know why and maybe there are some more pins not recognised, I only tested the one linked to …