1*9ea800c0SYanteng Si.. include:: ../disclaimer-zh_CN.rst 2*9ea800c0SYanteng Si 3*9ea800c0SYanteng Si:Original: :doc:`../../../iio/ep93xx_adc` 4*9ea800c0SYanteng Si:Translator: Yanteng Si <siyanteng@loongson.cn> 5*9ea800c0SYanteng Si 6*9ea800c0SYanteng Si.. _cn_iio_ep93xx_adc: 7*9ea800c0SYanteng Si 8*9ea800c0SYanteng Si 9*9ea800c0SYanteng Si================================== 10*9ea800c0SYanteng Si思睿逻辑 EP93xx 模拟数字转换器驱动 11*9ea800c0SYanteng Si================================== 12*9ea800c0SYanteng Si 13*9ea800c0SYanteng Si1. 概述 14*9ea800c0SYanteng Si======= 15*9ea800c0SYanteng Si 16*9ea800c0SYanteng Si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 17*9ea800c0SYanteng Si触摸屏/模拟数字转换器的高端设备(EP9307, EP9312, EP9315)。 18*9ea800c0SYanteng Si 19*9ea800c0SYanteng Si2. 通道编号 20*9ea800c0SYanteng Si=========== 21*9ea800c0SYanteng Si 22*9ea800c0SYanteng SiEP9301和EP9302数据表定义了通道0..4的编号方案。虽然EP9307, EP9312和EP9315多 23*9ea800c0SYanteng Si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。 24*9ea800c0SYanteng Si 25*9ea800c0SYanteng Si如果ep93xx_adc是IIO设备0，您将在以下位置找到条目 26*9ea800c0SYanteng Si/sys/bus/iio/devices/iio:device0/: 27*9ea800c0SYanteng Si 28*9ea800c0SYanteng Si +-----------------+---------------+ 29*9ea800c0SYanteng Si | sysfs 入口 | ball/pin 名称 | 30*9ea800c0SYanteng Si +=================+===============+ 31*9ea800c0SYanteng Si | in_voltage0_raw | YM | 32*9ea800c0SYanteng Si +-----------------+---------------+ 33*9ea800c0SYanteng Si | in_voltage1_raw | SXP | 34*9ea800c0SYanteng Si +-----------------+---------------+ 35*9ea800c0SYanteng Si | in_voltage2_raw | SXM | 36*9ea800c0SYanteng Si +-----------------+---------------+ 37*9ea800c0SYanteng Si | in_voltage3_raw | SYP | 38*9ea800c0SYanteng Si +-----------------+---------------+ 39*9ea800c0SYanteng Si | in_voltage4_raw | SYM | 40*9ea800c0SYanteng Si +-----------------+---------------+ 41*9ea800c0SYanteng Si | in_voltage5_raw | XP | 42*9ea800c0SYanteng Si +-----------------+---------------+ 43*9ea800c0SYanteng Si | in_voltage6_raw | XM | 44*9ea800c0SYanteng Si +-----------------+---------------+ 45*9ea800c0SYanteng Si | in_voltage7_raw | YP | 46*9ea800c0SYanteng Si +-----------------+---------------+ 47