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自定义文件系统启动存在的问题

ROS 启动遇到的问题以及应对方案

1.需要更换成国内华为源和中科大源2.需要安装python-empy python-setuptools3.需要通过脚本方式在镜像启动前放置在系统目录内部4.需要修改为你要安装的ros版本 特别是目录名字等等

kernel 5.17 nfs

#!/bin/sh../configure \-prefix /home/ubtech/dev/tools/qt/5.15.2/aarch64 \-confirm-license \-opensource \-release \-make libs \-xplatform linux-aarch64-gnu-g++ \-pch \-qt-libjpeg \-qt-libpng \-qt-zlib \-no-opengl \-no-sse2 \-no-openssl \-no-.

1.添加export QML2_EXPORT_PATH=$QTEDIR/qml报错现象提示QtQuick未安装，提示QtQApplication failed load

首先要在/etc/modules-load.d/modules.conf下添加bcm28350v4l2这段代码添加后才能看到ls /dev/video0

在VNCserver端开启troubleshotting即可

1.first step clone code git clone https://github.com/raspberrypi/tinyusb.git --recursive --depth=1 git clone --recursive https://github.com/raspberrypi/pico-sdk.git --depth=1 git clone https://github.com/davidgiven/FUZIX.git --recursive --depth=.

pico开发板各pin脚功能pico与TFT屏幕的spi连接连接图pico与oled屏幕的IIC连接图

SPI是串行外设接口(Serial Peripheral Interface)的缩写。是 Motorola 公司推出的一 种同步串行接口技术，是一种高速的，全双工，同步的通信总线。主要应用在EEPROM、Flash、实时时钟(RTC)、数模转换器(ADC)、网络控制器、MCU、数字信号处理器(DSP)以及数字信号解码器之间。#include <stdio.h>#include <string.h>#include "pico/stdlib.h"#include "ha..

I2C总线是一种简单、双向二线制同步串行总线。SDA(串行数据线)和SCL(串行时钟线)都是双向I/O线，接口电路为开漏输出。需通过上拉电阻接电源VCC．当总线空闲时。两根线都是高电平，连接总线的外同器件都是CMOS器件，输出级也是开漏电路。#include <stdio.h>#include <string.h>#include "pico/stdlib.h"#include "hardware/i2c.h"#include "pico/binary_info.h"

#include "pico/stdlib.h"#include <stdio.h>#include "pico/time.h"#include "hardware/irq.h"#include "hardware/pwm.h"void on_pwm_wrap() { static int fade = 0; static bool going_up = true; // Clear the interrupt flag that brought us he.

#include <stdio.h>#include "pico/stdlib.h"#include "hardware/adc.h" // For ADC input:#include "hardware/dma.h"#include "pico/multicore.h"// For resistor DAC output:#include "hardware/pio.h"#include "resistor_dac.pio.h"// Channel 0 is GPIO2.

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

#include <rtthread.h>#include <rtdevice.h>#define LED_PIN 25#define SHOCK_PIN 26int main(void){ rt_kprintf("Hello, RT-Thread!\n"); rt_pin_mode(LED_PIN, PIN_MODE_OUTPUT); rt_pin_mode(SHOCK_PIN,PIN_MODE_INPUT); while (1).

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

#include <rtthread.h>#include <rtdevice.h>#define LED_PIN 25#define BEEP_PIN 26#define BUTTON_PIN 27int main(void){ rt_kprintf("Hello, RT-Thread!\n"); rt_pin_mode(LED_PIN, PIN_MODE_OUTPUT); rt_pin_mode(BEEP_PIN,PIN_MODE_IN..

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

#include <rtthread.h>#include <rtdevice.h>#define LED_PIN 25#define BLUE_PIN 19#define GREEN_PIN 20#define RED_PIN 21int main(void){ rt_kprintf("Hello, RT-Thread!\n"); rt_pin_mode(LED_PIN, PIN_MODE_OUTPUT); rt_pin_mode(GR.

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-06-27 ubtech the first version */#include <rtthread.h>#include <rtdev.

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

/* * Copyright (c) 2006-2021, RT-Thread Development Team * * SPDX-License-Identifier: Apache-2.0 * * Change Logs: * Date Author Notes * 2021-01-28 flybreak first version */#include <rtthread.h>#include <rtde.

1.uboot中设置nfsroot路径 setenv nfsroot /home/user/2.服务器中设置nfs文件系统所有者为root3.服务器中设置nfs/etc/passwd 下的root用户为免密码登录4.服务器中设置nfs/etc/fstab 下添加 10.20.18.128:/home/user/dev/server/nfs/server/arm64_lite nfs defaults,vers=4.1,,5.服务器中设置/etc/export 中nfs目录映射 /ho...

#可以用官方的模板，或者自己编写，内容如下kernel=u-boot.bin #指定内核，如果不指定start.elf（或start4.elf）默认启动kernel8.imgkernel_address=Ox00080000 #内核地址arm_64bit=1 #开启64位模式enable_uart=1 #开启串口uart_2ndstage=1enable_gic=1...

FTP启动内核u-boot环境变量设置：setenv bootcmd "tftp 80000 OHOS_Image.bin;tftp 80000 OHOS_Image.bin;tftp 80000 OHOS_Image.bin;go 80000"SD卡启动内核u-boot环境变量设置：setenv bootcmd "fatload mmc 0:1 100000 liteos.bin;fatload mmc 0:1 100000 liteos.bin;mw.l 0x10100000 ffff.

1.设置uboot的bootargs 中nfsroot为指定目录 setenv nfsroot/home/atris/dev/root/nfs/ubuntu saveenv2.设置服务器中 /etc/export 中指定目录 /home/atris/dev/root/nfs/ubuntu 10.20.18.*(rw,async,no_root_squash)

树莓派文件系统时32位，但是内核和uboot是64位依然不支持运行64位程序

出现sudo vi test.c 返回错误提示如下sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set解决办法首先切换至root模式，然后设置如下权限chown root:root /usr/bin/sudochmod 4755 /usr/bin/sudo然后赋予其他用户各种合适的权限...

1.sudo mv /etc/passwd /etc/passwd_bak2.sudo vim /etc/passwd 删除对应用户名后面的X字符保存，重启开发板即可

修改 vim /etc/exports/home/usernam/dev/root/nfs/pi 10.20.18.*(rw,async,no_root_squash) IP和权限之间不要有空格，否则就是只读

树莓派3B连接串口后发现CH340串口工具只能接受数据，无法发送命令，经过调整发现时串口工具两个拨码都拨到电脑端，特别是外侧的之前是在插头端

将树莓派原有的NFS文件系统拷贝到共享机器nfs文件目录下 删除/etc/passwd中目标账户后面的x字母 设置netboot，bootargs，serverip ipaddr netmask参数

删除/etc/passwd中账号后面的"X"字母即可实现只需要输入账户就能登录

#include<>问题，不知道怎么处理，不是个别，是批量的

makefile交叉编译器设置aarch64-linux-gnu/aarch64-linux-gnu/include/c++/7.5.0/math.h:66:12: 错误： ‘constexpr bool std::isnan(double)’ conflicts with a previous declarationusing std::isnan; ^~~~~...