35 lines
862 B
Plaintext
35 lines
862 B
Plaintext
- code to control digital potentiometers via SPI [MM]
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- chip select not SPI CS
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- idea: use comparator to determine voltage range, then reconfigure amplifier
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- later
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- problem: capacitance of digital poti
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- idea 1:
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- idea 2: logarithmic amplifier using transistor
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- ADC driver
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- core [MM]
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- trigger function (we want to read all values ASAP)
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- callback function (once new values are available)
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- init function (initialize ADC)
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- USB integration [HW]
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- simple READ_ADC command
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- one reply packet with all ADC channels
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- OS timer
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- how often?
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- 'load modulation' driver
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- set PA2/PA3 to binary 0..3
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- add IO definitions for
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- PLL INHIBIT low
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- SPI_SS1_GAIN
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- SPI_SS2_DATA_THRESHOLD
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- BOOTLDR
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- sampled data continuous output into file / stdout
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- trigger sampling by raising/falling edge (configurable)
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- sample only one buffer
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