Programflow & Data

setup:

• SD
• sensors
  • moisture
  • ...
• LED Matrix
• LCD
• WSRCycle (sleep mode & timed interrupt)
• (BLE)
• (status LED)

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loop:

• WSRCycle (Work Sleep Repeat Cycle -> every 5 to 10 minutes) -> decide on whether to proceed immediately or enter sleep mode
• read sensor data
• store data on SD card
• display data & smiley (LCD & LED Matrix)
• (play sound)
• (status LED)

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Data

struct has to be of 'static'/fixed size

typedef struct DataEntity {

• sensor data
• time
• num of skipped WSRCycles }

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Sleep mode & interrupts

• determine what sleep mode to use and what timers, ADC, etc. can be shut down -> measure power consumption
• timed interrupt from RTC wakes up the Arduino from sleep mode -> how does the RTC SQW/INT work / when is it activated -> read datasheet