Honored ContributorHi,
I am working on temperature sensing diode(TSD of MAX10 SAU169C8GES). I am getting value 57 (decimal) on the channel number 17 always. f = 10 MHz external VRef = 2.5V Mode = Standard sequencer with external sample storage Seq Slot = 1 with TSD loaded Maybe I have a problem with my code. Please check it and if possible please provide me a working code example (VHDL). Thanks
Honored ContributorPlease read MAX10 Device Handbook for more detailed information and compare what you have with that is written.
Honored ContributorThanks Alex... but I read that handbook already and wrote that code accordingly. Interesting thing is that all other channels are working properly but TSD is showing constant value. This is the problem!!!
Honored Contributorif it works correctly than you expect values like in temprature conversion code table.
but what is value for channel counts in handbook? for U169 it is reported 8 and device has only one ADC. but figures contain 16... and documents send us to device overview for particular device part number. i think 'up to' and 'equal to' is not equivavalent and putting in technical documentation phrases for advertisement presentation should be strictly prohibitedHonored Contributorsingle supply devices have only one ADC and it has 16 dual funtional inputs, 1 dedicated analog input and one temperature sensor. In total 17 channels and one TSD.
dual supply devices have two ADCs but the no. of channels are almost same. I dont know why they did it like that. But my concern is to run the TSD now. I am stuck here.Honored Contributorokay...
you can turn off all channels except TSD to check functionality. You can open pin planner for you device and check bank 1A - 8 pins. Then you need to check ADC IP parameters that not more than 10 channels = 1dedicated analog + 8 dual function + 1tsdHonored ContributorI just read values of TSD... it is running with single cycle ADC conversion configuration perfectly. but with continuous ADC conversion it is giving problem.
Honored Contributorok. could you provide how sequencer is parametrized in ADC IP? Are there any warning or errors in IP wizard?
Honored Contributorvery simple... I change nothing in IP. but I write in my code "sequencer_csr_writedata = X"0000_0003"". by doing this you are configuring ADC as single cycle conversion. you can consult it from handbook.
Honored Contributorgreat, perhaps value sequencer_csr_writedata <= X"1" for sequencer good enough to run continous
But you should consider calibration cycle when changing from temprature to normal sampling... but I advise to recheck sequencer, for disabling channels from 9 to 16 for U169 defice. in the sequencer you can put TSD channel is slot only once(twice, thrice) in the middle of sequence and fill others slots for your signals, i suggest your use all 64 slots available.Honored ContributorI'm having a similar issue. Do you remember how you solved this?
