新手Zero V3S 基础入门问题

xblzy0423 · 2020-04-13 18:39:27

因为不新手，可能有些描述不一定正确
板子：Zero v3s
系统：linux +U-BOOT+buildroot ,全按荔枝派Zero教程做的系统
Linux version 4.13.0-licheepi-zero (gcc version 4.8.4 (Ubuntu/Linaro 4.8.4-2ubuntu1~14.04.1))
问题1： USB识别
usb识别为下图

请问这个是虚拟USB吗？要驱动吗？多次试装驱动不成功

问题2： nonexistent directory

运行led.sh,出象如下问题，怎么对能让它运行

sh ./led.sh

./led.sh: line 27: can't create /sys/class/leds/licheepi:red:usr/brightness: nonexistent directory
BusyBox v1.27.2 (2020-04-10 22:45:52 CST) multi-call binary.

Usage: sleep [N]...

Pause for a time equal to the total of the args given, where each arg can
have an optional suffix of (s)econds, (m)inutes, (h)ours, or (d)ays
./led.sh: line 27: can't create /sys/class/leds/licheepi:red:usr/brightness: nonexistent directory
./led.sh: line 27: can't create /sys/class/leds/licheepi:green:usr/brightness: nonexistent directory
BusyBox v1.27.2 (2020-04-10 22:45:52 CST) multi-call binary.

测试了一下leds下没权限，chmod -R 777 leds 也不行

cd /sys/class/leds/

mkdir test

mkdir: can't create directory 'test': Operation not permitted
#

问题3：待定
问题4：待定
问题4：待定

最近编辑记录 xblzy0423 (2020-04-13 19:01:09)

xblzy0423 · 2020-04-13 18:44:25

有梦的地方 wrote:
主线Linux?
是不是用zadig

主线是LINUX

xblzy0423 · 2020-04-14 11:45:02

问题1：应该是ACM（虚拟串口）和ECM（网络共享）还在研究中

xblzy0423 · 2020-04-14 16:15:32

xblzy0423 wrote:
问题1：应该是ACM（虚拟串口）和ECM（网络共享）还在研究中

安装驱动，成功识别为COM5 ，但问题又来
板子不停发送如下，

[16:13:37.128]收←◆can't run '/bin/getty': No such file or directory

[16:13:38.131]收←◆can't run '/bin/getty': No such file or directory

xblzy0423 · 2020-04-14 17:03:24

xblzy0423 wrote:
安装驱动，成功识别为COM5 ，但问题又来
板子不停发送如下，
[16:13:37.128]收←◆can't run '/bin/getty': No such file or directory
[16:13:38.131]收←◆can't run '/bin/getty': No such file or directory

奇怪，重启后就好了
现在通讯正常，好象和串口1一样，一调试命令能用

xblzy0423 · 2020-04-14 17:04:19

问题2顶起来，请大神帮忙

xblzy0423 · 2020-04-14 17:57:57

拉轰的脚踏车 wrote:
led.sh 脚本是啥？
这个目录 /sys/ 里面有内容吗？

官方代码，板子上的led灯的我放在root目录下

源码如下
===============
#!/bin/sh
trap 'echo "INTERRUPTED!";rgb_off; exit' INT
trap 'echo "TERMED!";rgb_off; exit' TERM
rgb()
{
echo 1 > /sys/class/leds/licheepi:red:usr/brightness
sleep $1
echo 0 > /sys/class/leds/licheepi:red:usr/brightness
echo 1 > /sys/class/leds/licheepi:green:usr/brightness
sleep $1
echo 0 > /sys/class/leds/licheepi:green:usr/brightness
echo 1 > /sys/class/leds/licheepi:blue:usr/brightness
sleep $1
echo 0 > /sys/class/leds/licheepi:blue:usr/brightness
}

rgb_off()
{
echo 0 > /sys/class/leds/licheepi:red:usr/brightness
echo 0 > /sys/class/leds/licheepi:green:usr/brightness
echo 0 > /sys/class/leds/licheepi:blue:usr/brightness
}

while true;
do
rgb $1;
done

xblzy0423 · 2020-04-14 19:08:36

晕哥 wrote:
这个目录 /sys/ 里面有内容吗？

有的，下面几个目录中都有，LEDS没有

ls

connect_wx.sh init.sh iperf_c.sh usart
hello ins_8192.sh root

cd ..

ls

bin lib lost+found opt run tmp
dev lib32 media proc sbin usr
etc linuxrc mnt root sys var

cd sys

ls

backlight graphics mem ptp spi_master
bdi hwmon misc pwm thermal
block i2c-adapter mmc_host regulator tty
bsg i2c-dev mtd rtc udc
dma ieee80211 net scsi_device vc
drm input phy scsi_disk vtconsole
extcon leds power_supply scsi_host watchdog
gpio mdio_bus pps sound

cd leds

ls

#

xblzy0423 · 2020-04-14 19:13:22

ZERO V3S 板子上有个三色灯，我只是想运行看看，看看GPIO操做的，就运行不起来

xblzy0423 · 2020-04-15 09:57:16

xblzy0423 wrote:
ZERO V3S 板子上有个三色灯，我只是想运行看看，看看GPIO操做的，就运行不起来

顶起来

xblzy0423 · 2020-04-15 12:21:13

晕哥 wrote:
看下是哪一级目录或者文件没有 /sys/class/leds/licheepi:red:usr/brightness

我进入/sys/class/leds/看了一下，下边是空的，
licheepi:red:usr/brightness这个我还看不懂

感觉是内核中是不是没有东西勾选
是不是U-boot 或buildroot中有项我没做到，我都是按默认项

Pause for a time equal to the total of the args given, where each arg can
have an optional suffix of (s)econds, (m)inutes, (h)ours, or (d)ays
./led.sh: line 27: can't create /sys/class/leds/licheepi:blue:usr/brightness: nonexistent directory
./led.sh: line 27: can't create /sys/class/leds/licheepi:red:usr/brightness: nonexisteconds, (m)inutes, (h)ours, or (d)ays
./led.sh: line 27: can't create /sys/class/leds/licheepi:green:usr/brightness: nonexistent directory
./led.sh: line 27: can't create /sys/class/leds/licheepi:blue:usr/brightness: nonexistent directory
^CBusyBox v1.27.2 (2020-04-10 22:45:52 CST) multi-call binary.

最近编辑记录 xblzy0423 (2020-04-15 12:27:06)

xblzy0423 · 2020-04-15 16:30:21

晕哥 wrote:
https://github.com/torvalds/linux/blob/master/arch/arm/boot/dts/sun8i-v3s-licheepi-zero.dts
这个 CONFIG_LEDS_GPIO 驱动有没有勾选?

打开linux目录下的.CONFIG如下

这样是不是算勾选
#

LED drivers

#

CONFIG_LEDS_BCM6328 is not set

CONFIG_LEDS_BCM6358 is not set

CONFIG_LEDS_LM3530 is not set

CONFIG_LEDS_LM3642 is not set

CONFIG_LEDS_PCA9532 is not set

CONFIG_LEDS_GPIO=y

CONFIG_LEDS_LP3944 is not set

CONFIG_LEDS_LP3952 is not set

CONFIG_LEDS_LP5521 is not set

最近编辑记录 xblzy0423 (2020-04-15 16:34:06)

xblzy0423 · 2020-04-15 16:54:30

晕哥 wrote:
dts有没有开启 mmc1?

没有，只有mmc0
&mmc0 {
pinctrl-0 = <&mmc0_pins_a>;
pinctrl-names = "default";
broken-cd;
bus-width = <4>;
vmmc-supply = <&reg_vcc3v3>;
status = "okay";
};

xblzy0423 · 2020-04-15 17:09:21

xblzy0423 wrote:
没有，只有mmc0
&mmc0 {
pinctrl-0 = <&mmc0_pins_a>;
pinctrl-names = "default";
broken-cd;
bus-width = <4>;
vmmc-supply = <&reg_vcc3v3>;
status = "okay";
};

我是按这贴配置的
把 buildroot-v3s-20171122.zip解压后拷贝到 buidroot目录成 .config 文件
https://whycan.cn/t_561.html

xblzy0423 · 2020-04-20 14:20:44

继续

xblzy0423 · 2020-04-22 12:35:50

顶起来，问题2还没有解决，请大神们指导

最近编辑记录 xblzy0423 (2020-04-22 12:36:35)

xblzy0423 · 2020-05-04 20:22:54

顶起来，问题2还没有解决，请大神们指导

xblzy0423 · 2020-06-06 23:31:32

windcys wrote:
请问楼主，如果想用串口来调试ZERO板，串口的波特率怎么设置？

我没改，我是安排好默认的 15200

xblzy0423 · 2020-06-06 23:32:26

xiaoqinhu2020 wrote:
请问楼主，设备树中需要修改什么吗？我的电脑端一直没有出现新设备

我没明白出现新设备是什么意思
我是用串口调试的，没用USB

xblzy0423 · 2020-06-06 23:32:46

luciferseva wrote:
请问楼主，设备树中需要修改什么吗？我的电脑端一直没有出现新设备

我是用串口调试的，没用USB

xblzy0423 · 2020-06-06 23:34:13

./led.sh: line 27: can't create /sys/class/leds/licheepi:blue:usr/brightness: nonexistent directory
问题继续
板子上的三色灯控制不了

xblzy0423 · 2020-06-10 09:23:12

运行led.sh
报错
./led.sh: line 27: can't create /sys/class/leds/licheepi:blue:usr/brightness: nonexistent directory
问题继续
板子上的三色灯控制不了

xblzy0423 · 2020-06-10 13:54:16

xblzy0423 wrote:
运行led.sh
报错
./led.sh: line 27: can't create /sys/class/leds/licheepi:blue:usr/brightness: nonexistent directory
问题继续
板子上的三色灯控制不了

谢谢大家，这个问题解决了，是设备树出了点错 status = "disbaled"了

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楼主 #1 2020-04-13 18:39:27 分享评论