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The 2 traces were cut, removing the short between the SPI pins and GND, and we were able to establish an SPI connection with the device. Voltage, current, status, and PWM were all successfully measured, though need to be calibrated to get useful numbers - not unitless hexadecimal corresponding to internal chip ADC values. ADC reference voltage is 1.25V per the SPV1020 Application note.
Overall, the SPI port does what it claims to do and provides some basic diagnostic information.
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