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.. include:: ../disclaimer-zh_CN.rst

:Original: :doc:`../../../iio/ep93xx_adc`
:Translator: Yanteng Si <siyanteng@loongson.cn>

.. _cn_iio_ep93xx_adc:


==================================
思睿逻辑 EP93xx 模拟数字转换器驱动
==================================

1. 概述
=======

该驱动同时适用于具有5通道模拟数字转换器的低端 (EP9301, Ep9302) 设备和10通道
触摸屏/模拟数字转换器的高端设备(EP9307, EP9312, EP9315)。

2. 通道编号
===========

EP9301和EP9302数据表定义了通道0..4的编号方案。虽然EP9307, EP9312和EP9315多
了3个通道(一共8个),但是编号并没有定义。所以说最后三个通道是随机编号的。

如果ep93xx_adc是IIO设备0,您将在以下位置找到条目
/sys/bus/iio/devices/iio:device0/:

  +-----------------+---------------+
  | sysfs 入口      | ball/pin 名称 |
  +=================+===============+
  | in_voltage0_raw | YM            |
  +-----------------+---------------+
  | in_voltage1_raw | SXP           |
  +-----------------+---------------+
  | in_voltage2_raw | SXM           |
  +-----------------+---------------+
  | in_voltage3_raw | SYP           |
  +-----------------+---------------+
  | in_voltage4_raw | SYM           |
  +-----------------+---------------+
  | in_voltage5_raw | XP            |
  +-----------------+---------------+
  | in_voltage6_raw | XM            |
  +-----------------+---------------+
  | in_voltage7_raw | YP            |
  +-----------------+---------------+