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To use this feature, EXP1 OpenPowerState and ClosePowerState entries has to be set to UNCHANGE
(2). Device manager will call EXP open and Close at driver Init so it will be first set to
OpenPowerState and then to ClosePowerState regardless of what is defined as BootPowerState.
3.1.4 Suspend and Resume
At suspend, the external power pin will go off and at resume will be restored to the original state.
3.2 Test Application
Figure 3 - Test Application
Above application provides a basic test platform for the EXP1 power driver. It is copied to MC9190
devices \Program Files\ExtPowerTest folder when the driver CAB file is installed.
3.2.1 Open and Close buttons in the COM Block
These two buttons will open and close the built in COM port COM1. When the power driver is
installed it should not change the external power pin state.
3.2.2 Open and close buttons in the Power Block
There two buttons will open and close EXP1. With default settings this will not change the external
power pin state but “Close” button will switch external power off if it is set to ON by “Enable”
button.
3.2.3 Enable and Disable buttons in the Power block
These two buttons will call the device IO control to ON and OFF power to the external power pin.
3.2.4 Blank text box and the “X” button
The text box will display any error state, and the “X” button can be used to clear the text box.
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