Reviving SH2 ESP32 project

Today I did some work on reviving my sh2_esp32 project.

Steps taken:

• Installed xtensa toolchain on new Ubuntu system (aw17-r4)
• Made a new clone of sh2_esp32
• Verified that BNO080 I2C interface still works. (Based on original bno080 demo code.)
• Cleaned up warnings.
  • Changed esp_task_wdt_feed() calls to _add() and _reset().
  • changed “task” to “port” on critical section calls
  • added scan_type, scan_time components to scan param struct.
• Suppressed prints from sensor app. (To allow CLI to work.)
• Configured minicom to permit CLI operations.
  • Set line
  • Set comm params
  • Disable hardware handshaking (key!)
  • Save as default once working.
• Added quoted param support to CLI

At this point, I can run it, scan for APs, connect to a know AP with the STA command. The system connects, gets an IP and reflects the changing state on the LED.

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