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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | .. include:: ../disclaimer-zh_CN.rst :Original: Documentation/iio/ep93xx_adc.rst :翻译: 司延腾 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 | +-----------------+---------------+ |