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--- products:sbc:edge2:applications:gpio:adc [2022/12/01 22:45]
ivan created
+++ products:sbc:edge2:applications:gpio:adc [2022/12/06 21:03] (current)
hyphop [Hardware Information]
@@ Line 1: / Line 1: @@
+~~tag>Edge2 ADC~~
 ====== Edge2 ADC ======
-{{page>products:sbc:common:applications:gpio:adc&noheader}}
+===== Introduction =====
+This documentation will introduce the usage of ADC on the Edge2 IO board.
+<WRAP important >
+For Edge2, in order to use the ADC function, you need to attach the Edge2 IO board.
+</WRAP>
+===== Hardware Information =====
+The ADC on the Edge2 IO board is a 12-bit successive approximation register (SAR) A/D Converter.
+^  Pin  ^  Voltage  ^  Device Node                                       ^
+|  9    |  0~1.8V   |  /sys/bus/iio/devices/iio:device0/in_voltage4_raw  |
+===== Get Raw ADC Value =====
+```shell
+$ cat /sys/bus/iio/devices/iio:device0/in_voltage4_raw
+
+```
+Convert the raw ADC value to Voltage:
+''Voltage = (value / 4096) * 1.8V''

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