Hardware requirements
Mini/micro USB cable
LPCXpresso55S36 board
Personal Computer
Board settings
No special settings are required.
Prepare the Demo
Connect a USB cable between the host PC and the OpenSDA USB port on the target board.
Open a serial terminal with the following settings:
115200 baud rate
8 data bits
No parity
One stop bit
No flow control
Download the program to the target board.
Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
Running the demo
VREF connect to 1.6V (3.3V * 15 /31). The log below shows the output of the aoi demo in the terminal window:
AOI Demo: Start...
AOI INPUT_MUX driver example
Then change CMP analog input:
If CMP0_D (J44-21)connected to the input voltage that in the range of 0V to 1.5V then the AOI0_OUT0 (J92-12) output No waveform output.
If CMP0_D (J44-21)connected to the input voltage that in the range of 1.7V to 3.3V then the AOI0_OUT0 (J92-12) continuous output square wave.
AOI INPUT_MUX logic normal!