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待分配 #37

open

px30 gpio 的状态怎么读取

Added by 余 顺 over 2 years ago. Updated over 2 years ago.

Status:
待分配
Priority:
普通
Assignee:
-
Category:
gpio
Target version:
px30 -android
Start date:
08/06/2022
Due date:
% Done:

0%

Estimated time:

Description

sdk px30 -android8.1
源码设置如下

获取gpio电平的命令是cat /proc/rp_gpio/gpio1c3

io上加高低电平然后cat读取，gpio1c3不管是高电平还是低电平cat都是读出1

板子硬件是把这个接地的，但读的还是1,

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clipboard-202208061104-iahho.png (43.6 KB) clipboard-202208061104-iahho.png 余 顺, 08/06/2022 02:03 AM
clipboard-202208061124-amnnv.png (45 KB) clipboard-202208061124-amnnv.png 余 顺, 08/06/2022 02:23 AM
cat gpio.png (18.9 KB) cat gpio.png 张健清 张, 08/09/2022 07:41 AM
cat pinmux-pins.png (44.6 KB) cat pinmux-pins.png 张健清 张, 08/09/2022 07:41 AM
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