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lucask07 / covg_fpga

FPGA and Python experiment code for the digital ion channel amplifier project.
GNU General Public License v3.0
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ADS8686 sequencer position is unknown in DDR readings #23

Closed lucask07 closed 2 years ago

lucask07 commented 2 years ago

The ADS8686 sequencer free runs at 1 MSPS. We need to implement a small module count of conversion starts in the FPGA that allows us to map each DDR reading to a specific ADS MUX channel within the sequencer sequence. The counter should only be reset when the ADS8686 is also reset.

lucask07 commented 2 years ago

Completed with commit 8bdb35db3676e57bc49cdc9641b6497677104a36. The FPGA counts conversion start pulses sent to the ADS8686 modulo 24. This information is sent in the DDR data stream so that ADS data can be associated with each channel in the sequencer.
The alignment is completed by separate_ads_sequence within https://github.com/lucask07/covg_fpga/blob/daq_v2/python/analysis/adc_data.py#L272