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+# Getting started with ADC on mbed OS
+
+
+### Import NuMaker-mbed-ADC0_MQ3 from on-line IDE
+1. Please choose Nuvoton NuMaker-PFM-XXX as your target platform.
+2. Please press the left-up icon "New", then choose "NuMaker ADC read gas sensor (MQ3)" from the template list.
+3. Your NuMaker-mbed-ADC0_MQ3 program is existed.
+
+#### Now compile
+Please press compile icon.
+
+#### Burn Code & Execute
+1. Connect the board NuMaker-PFM-XXX with your PC by USB cable, then there will be one "mbed" disk.
+2. Copy the built binary file into "mbed" disk on you PC.
+3. Press device's reset button and you could get the below log by uart console. UART baud is 9600 at default.
+-------------------------------------------------------------------------------
+ ADC0 start reading...
+ ADC0 value= 0x 8f0, percentage= 0.098%
+ ADC0 value= 0x1711, percentage= 6.152%
+			:
+			:
+
+--------------------------------------------------------------------------
+If the percentage is over than 70.000%, LED will be on. otherwise LED will be off.
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