ADS7128 Digital Window Comparator + ALERT Test
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ALERT pin on Metro D3

Test 1: High threshold alert
  Baseline CH1: 0 (0.00 V)
  High threshold: 500
  CH0=HIGH, CH1 now: 4091 (5.00 V)
  Interrupt fired: YES
  Event high flags: 0x02 (bit 1 set)
  PASS

Test 2: Low threshold alert
  Low threshold: 2457
  CH0=LOW, CH1 now: 0 (0.00 V)
  Interrupt fired: YES
  Event low flags: 0x02 (bit 1 set)
  PASS

Test 3: clearEventFlags
  Before clear: 0x02
  After clear: 0x00
  PASS

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RESULTS: 3/3 tests passed
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