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MBARI CSEM TRIGGERBOX - MAIN APPLICATION LOG
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Log created: 2025-08-11 18:06:32 UTC

NOTE: This is the MAIN APPLICATION log for events, timing, and system status.
GPS position data is logged separately in the GPS log file.

TIME SYNCHRONIZATION:
  RPI Time (UTC): 2025-08-11 18:06:32
  GPS Time (UTC): 2025-08-11 18:06:32
  RTC Time (UTC): 2025-08-11 18:06:32

GPS POSITION (at session start):
  Latitude: 36.80277 N
  Longitude: -121.78759 W
  Satellites: 06

TRANSMISSION SETTINGS:
  Frequency: 1.000 Hz
  Period: 1.000 seconds
  Transmit Time: 60 seconds
  Pause Time: 30 seconds

GPIO CONFIGURATION:
  TX Status: GPIO 13 (Pin 33) - HIGH when transmitting
  Duty Signal: GPIO 6 (Pin 31) - toggles at 2x frequency
  Polarity Signal: GPIO 26 (Pin 37) - toggles at frequency
  PPS Input: GPIO 17 (Pin 11) - 1 pulse per second input

LOG FILES:
  Main Log: /home/morepork/Documents/CSEM/logs/main_log_20250811_180632.txt
  GPS Log: Will be created when GPS reader starts

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APPLICATION EVENT LOG:
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2025-08-11 18:06:32 UTC - SESSION_START: Main application logging started
2025-08-11 18:06:32 UTC - COUNTDOWN_START: Countdown started for 1.000 Hz transmission
2025-08-11 18:06:33 UTC - COUNTDOWN: 00:27
2025-08-11 18:06:34 UTC - COUNTDOWN: 00:26
2025-08-11 18:06:35 UTC - COUNTDOWN: 00:25
2025-08-11 18:06:36 UTC - COUNTDOWN: 00:24
2025-08-11 18:06:37 UTC - COUNTDOWN: 00:23
2025-08-11 18:06:38 UTC - COUNTDOWN: 00:22
2025-08-11 18:06:39 UTC - COUNTDOWN: 00:21
2025-08-11 18:06:40 UTC - COUNTDOWN: 00:20
2025-08-11 18:06:41 UTC - COUNTDOWN: 00:19
2025-08-11 18:06:42 UTC - COUNTDOWN: 00:18
2025-08-11 18:06:43 UTC - COUNTDOWN: 00:17
2025-08-11 18:06:44 UTC - COUNTDOWN: 00:16
2025-08-11 18:06:45 UTC - COUNTDOWN: 00:15
2025-08-11 18:06:46 UTC - COUNTDOWN: 00:14
2025-08-11 18:06:47 UTC - COUNTDOWN: 00:13
2025-08-11 18:06:48 UTC - COUNTDOWN: 00:12
2025-08-11 18:06:49 UTC - COUNTDOWN: 00:11
2025-08-11 18:06:50 UTC - COUNTDOWN: 00:10
2025-08-11 18:06:51 UTC - COUNTDOWN: 00:09
2025-08-11 18:06:52 UTC - COUNTDOWN: 00:08
2025-08-11 18:06:53 UTC - COUNTDOWN: 00:07
2025-08-11 18:06:54 UTC - COUNTDOWN: 00:06
2025-08-11 18:06:55 UTC - COUNTDOWN: 00:05
2025-08-11 18:06:56 UTC - COUNTDOWN: 00:04
2025-08-11 18:06:57 UTC - COUNTDOWN: 00:03
2025-08-11 18:06:58 UTC - COUNTDOWN: 00:02
2025-08-11 18:06:59 UTC - COUNTDOWN: 00:01
2025-08-11 18:07:00 UTC - COUNTDOWN_COMPLETE: Countdown reached zero
2025-08-11 18:07:00 UTC - TRANSMISSION_STATUS: Starting transmission cycle: 60s ON, 30s OFF
2025-08-11 18:07:00 UTC - TRANSMIT_START: Started transmission at 1.0 Hz
2025-08-11 18:07:31 UTC - TRANSMISSION_STOP_REQUESTED: User requested transmission stop
2025-08-11 18:07:33 UTC - MANUAL_STOP: Transmission manually stopped
2025-08-11 18:07:33 UTC - TRANSMISSION_STATUS: Transmission cycle stopped

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FINAL GPS POSITION:
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2025-08-11 18:07:33 UTC - FINAL_GPS_POSITION:
  Latitude: 36.80266 N
  Longitude: -121.78759 W
  Satellites: 07
  GPS Time: 2025-08-11 18:07:31 UTC
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2025-08-11 18:07:33 UTC - SESSION_STOP: Main application logging stopped