RT-Thread-Uboot 命令TFTP 下载RT-Smart系统镜像并烧写到emmcRT-Thread问答社区

Uboot 命令TFTP 下载RT-Smart系统镜像并烧写到emmc

发布于 2022-05-06 23:39:02 浏览：778 订阅该版

[tocm]

# Uboot 命令TFTP 下载RT-Smart系统镜像并烧写到emmc

上回说到Windows下通过 Uboot  TFTP 方式下载和启动rt-smart 内核，　其实只是通过TFTP下载rt-smart 内核到内存，启动开发板，并不是下载到emmc(ROM),怎么烧写emmc呢？　下面讲解

## 准备

-     设置TFTP服务
-     设置开板板IP
-     设置服务器TFTP

请到上回Windows下通过 Uboot  TFTP 方式下载和启动rt-smart 内核

## 下载系统镜像

```
    => tftp emmc.img
    Using ethernet@02188000 device
    TFTP from server 192.168.0.26; our IP address is 192.168.0.100
    Filename 'emmc.img'.
    Load address: 0x80800000
    Loading: #################################################################
             #################################################################
             .......
             ####################
             1.6 MiB/s
    done
    Bytes transferred = 69207040 (4200400 hex)
```

提示下载启始地址0x80800000，大小69207040Bytes　／512Bytes/blk = 135170 转换为16进制　0x21002

## 写入emmmc

按上面计算写emmc命令为mmc write 0x80800000 0 21002
```

=> mmc write 0x80800000 0 21002

MMC write: dev # 1, block # 0, count 135170 ... 135170 blocks written: OK
```

注：从内存地址0x80800000开始　写到emmc０blk开始写　135170(x21002) blks(块）　
![emmwrite.png](https://oss-club.rt-thread.org/uploads/20220506/28c768545f605e12cabd9d3d4c1c451f.png)

这时看uboot环境还是之前的，这内存的，boo可以直接启动

## 设置uboot环境变量并保存：
第二次不了，环境变量，是新系统镜像的，所以要重新设置一下

```
    setenv bootcmd "fatload mmc 1:1 0x80001000 /kernel/rtthread.bin; dcache flush; go 0x80001000"
    saveenv
```

### RT-Smart系统命令：

```
  boot
```
新环境变量启动

### 执行结果:

```
    => setenv bootcmd "fatload mmc 1:1 0x80001000 /kernel/rtthread.bin; dcache flush; go 0x80001000"
    => saveenv
    Saving Environment to MMC...
    Writing to MMC(1)... done
    => boot
    reading /kernel/rtthread.bin
    1182208 bytes read in 52 ms (21.7 MiB/s)
    ## Starting application at 0x80001000 ...

\ | /
    - RT -     Thread Smart Operating System
    / | \     5.0.0 build Dec 23 2021
    2006 - 2020 Copyright by rt-thread team
    lwIP-2.1.2 initialized!
    [15] E/drv.enet: emac device init success

[20] I/I2C: I2C bus [i2c3] registered
    [24] I/I2C: I2C bus [i2c4] registered
    [83] E/drv.enet:
    PHY Link down, please check the cable connection and link partner setting.

[117] I/SDIO: emmc card capacity 3817472 KB.
    found part[0], begin: 2098176, size: 128.0MB
    found part[1], begin: 136315904, size: 128.0MB
    [154] I/touch: rt_touch init success
    [158] I/gt911: touch device gt911 init success
    [163] I/sal.skt: Socket Abstraction Layer initialize success.
    emmc file system initialization done!
    Dir / sd0 mount failed!
    [1634] E/[RW007]: The wifi Stage 1 status 0 0 0 1
    [1641] I/WLAN.dev: wlan init success
    [1646] I/WLAN.lwip: eth device init ok name:w0
    [1646] I/WLAN.dev: wlan init success
    [1656] I/WLAN.lwip: eth device init ok name:w1

rw007  sn: [rw00700000000fc584a2c4d43]
    rw007 ver: [RW007_2.1.0-a7a0d089-57]

[5232] D/drv.enet: enet1 link up

[5667] W/WLAN.mgnt: F:rt_wlan_connect L:1091 not find ap! ssid:rt-thread
    hello rt-smart!
    /sd/wifi.sh wi-fi configuration file not exist in sd card!
    [5674] I/mcf.link.tcp: TCPServer Waiting for client on port 5555...

[5692] I/mcf.link: MCF link port(3) register successfully.
    msh />[5722] I/mcf.trans: MCF(V0.1.0) initialized successfully.
    [5722] I/urpc: uRPC(V0.1.0) initialize successfully.
    [5722] I/mcf.trans: MCF protocol started successfully.
```

### 内核成功启动，试试命令，
```
    msh />
    msh />ls
    Directory /:
    kernel              <DIR>
    root                <DIR>
    sd                  <DIR>
    msh />
    RT-Thread shell commands:
    reboot           - reboot system
    cpu_usage        - display cpu usage
    dbg              - dbg
    memcheck         - check memory data
    memtrace         - dump memory trace information
    gic_dump         - show gic status
    list_page        - show page info
    list_fd          - list file descriptor
    lsof             - list open files
    mount            - mount<device><mountpoint><fstype>
    unmount          - unmount the mountpoint
    hello            - say hello world
    clear            - clear the terminal screen
    version          - show RT-Thread version information
    list_thread      - list thread
    list_sem         - list semaphore in system
    list_event       - list event in system
    list_mutex       - list mutex in system
    list_mailbox     - list mail box in system
    list_msgqueue    - list message queue in system
    list_memheap     - list memory heap in system
    list_mempool     - list memory pool in system
    list_timer       - list timer in system
    list_device      - list device in system
    list             - list all symbol in system
    help             - RT-Thread shell help.
    ps               - List threads in the system.
    free             - Show the memory usage in the system.
    ls               - List information about the FILEs.
    cp               - Copy SOURCE to DEST.
    mv               - Rename SOURCE to DEST.
    cat              - Concatenate FILE(s)
    rm               - Remove(unlink) the FILE(s).
    cd               - Change the shell working directory.
    pwd              - Print the name of the current working directory.
    mkdir            - Create the DIRECTORY.
    mkfs             - format disk with file system
    df               - disk free
    echo             - echo string to file
    set              - set or show environment variable
    list_channel     - list IPC channel information
    list_process     - list process
    kill             - send a signal to a process
    killall          - kill processes by name
    list_shm         - show share memory info
    sys_log          - sys_log 1(enable)/0(disable)
    ifconfig         - list the information of all network interfaces
    ping             - ping network host
    dns              - list and set the information of dns
    netstat          - list the information of TCP / IP
    pwm_enable       - pwm_enable pwm1 1
    pwm_disable      - pwm_disable pwm1 1
    pwm_set          - pwm_set pwm1 1 100 50
    date             - get date and time or set [year month day hour min sec]
    wifi             - wifi command.

msh />
```
![uboot_emmc.png](https://oss-club.rt-thread.org/uploads/20220506/a6f6e95f7dda1b1ce3a58af3ccb2fc61.png)

nice成功了