[work] How to use kermit to download bin file

How to use kermit

1. apt-get install kermit



2. Into kermit

kermit -l /dev/ttyUSB0 (/dev/ttyUSB0 depend on which console you use)



3.

HINTS... If the preceding error message does not explain the failure:

 . Try changing the remote Kermit's FLOW-CONTROL setting.

 . Increase the retry limit (see HELP SET RETRY).

 . Try it again with SET PREFIXING ALL.

 . Try it again with SET STREAMING OFF.

 . Try it again with SET PARITY SPACE.

 . As a last resort, give a ROBUST command and try again.

Also:

 . Be sure the source file has read permission.

 . Be sure the target directory has write permission.

(Use SET HINTS OFF to suppress hints.)

(/home/freeman/) C-Kermit>SET PREFIXING ALL  

(/home/freeman/) C-Kermit>SET PARITY SPACE

(/home/freeman/) C-Kermit>set serial 8N1

(/home/freeman/) C-Kermit>send /home/freeman/tftp/u-boot.bin  ##  Choose which file will donwload to board



4.

Switch to kermit command:

(/home/freeman/) C-Kermit>connect

or

(/home/freeman/) C-Kermit>c



5.

type

=> loadb

## Ready for binary (kermit) download to 0x80000100 at 115200 bps...



6.Back to kermit

crtl+\ then c

back to board command



7.

(/home/freeman/) C-Kermit>send /home/freeman/tftp/u-boot.bin

Start to download

Screen Capture:

/****************************************************/

C-Kermit 8.0.211, 10 Apr 2004, freeman-laptop



   Current Directory: /home/freeman

Communication Device: /dev/ttyUSB0

 Communication Speed: 115200

              Parity: none

         RTT/Timeout: 08 / 08



           File Type:

           File Size:

        Bytes So Far:

                          ...10...20...30...40...50...60...70...80...90..100

 Estimated Time Left:

  Transfer Rate, CPS: 4934

        Window Slots: 1 of 1

         Packet Type: %

        Packet Count: 1

       Packet Length: 28

         Error Count: 4

          Last Error: (resend)

        Last Message:



X to cancel file, Z to cancel group, <CR> to resend last packet,

E to send Error packet, ^C to quit immediately, ^L to refresh screen.

/****************************************************/



8.

Switch to kermit command:

(/home/freeman/) C-Kermit>connect

or

(/home/freeman/) C-Kermit>c



9.

=> protect off 48000000 +20000            ## protect off address from 48000000 to 48020000

=> erase 48000000 +20000                  ## erase address from 48000000 to 48020000

=> cp.b 80000100 48000000 20000           ## copy address from 80000100 (Put file here temporarily) to 48000000 - 48020000

=> reset                                  ## reboot board again





Reference :

1. 
   ubuntu下使用kermit协议,通过串口传送文件


2. 
   kermit Downloading Files