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sordfish / project-clematis

Ideas and test code for Engine control on an FPGA
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HDL for ADC inputs #8

Open sordfish opened 4 years ago

sordfish commented 4 years ago

Qorivva CPUs mix sar and sigmal delta adcs, probably for onboard Knock control.

Investigation is required in availability of ADC devices in automotive temp grades that aren't too expensive but cover the requirements for drive by wire.

(Could a cheap microcontroller help with this as an alternative to a pure ADC? samc21 is automotive rated, canfd and 5v adc)

Knock might be best left for dedicated hardware chips initially so have audio quality ADCs aren't a requirement.

Hdl will abstract everything away from the riscv cpu so getting values needs to be very simple.

sordfish commented 4 years ago

ADS79xx-Q1 is a contender for adc

sordfish commented 4 years ago

The L9966 looks a perfect fit and has built in pull up and pull downs. https://www.st.com/resource/en/data_brief/l9966.pdf

No availability yet though?

NXP or Infinion may have something comparable.