utilities api documentaiton complete

docs/utilities.md

@@ -22,6 +22,111 @@ Enable/Disable the Debug
   UT.toggle_debug()
   ```
 
+### unexport_all()
+Function to force clean up all exported GPIO on the system
 
+* Parameters
+  
+  None
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  UT.unexport_all()
+  ```
+
+### is_chip_pro()
+Function to report to the calling script if the SBC is a CHIP or a CHIP Pro
+
+* Parameters
+  
+  None
+
+* Returns
+
+  boolean - True for CHIP Pro, False for CHIP
+
+* Examples
+
+  ```python
+  is_chip_pro = UT.is_chip_pro()
+  ```
+
+### enable_1v8_pin()
+Enable the 1.8V pin on the CHIP as it is disabled by default.  Also sets the output to 1.8V.
+This only works on the CHIP.
+
+* Parameters
+  
+  None
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  UT.enable_1v8_pin()
+  ```
+
+### set_1v8_pin_voltage(voltage)
+Change the voltage of the 1.8V Pin on the CHIP.
+This only works on the CHIP.
+
+* Parameters
+  
+  voltage - 1.8, 2.0, 2.6, 3.3
+
+* Returns
+
+  boolean - False on error
+
+* Examples
+
+  ```python
+  UT.set_1v8_pin_voltage(2.0)
+  ```
+
+
+### get_1v8_pin_voltage(voltage)
+Get the current voltage of the 1.8V Pin on the CHIP.
+This only works on the CHIP.
+
+* Parameters
+  
+  None
+
+* Returns
+
+  float - current voltage of the 1.8V Pin
+
+* Examples
+
+  ```python
+  volts = UT.get_1v8_pin_voltage()
+  ```
+
+### disable_1v8_pin()
+Disables the 1.8V pin on the CHIP.
+This only works on the CHIP.
+
+* Parameters
+  
+  None
+
+* Returns
+
+  None
+
+* Examples
+
+  ```python
+  UT.disable_1v8_pin()
+  ```
 
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