2009-03-03 23:00:38     while loading uboot via uart,i have met with the problems:timeout while sending; aborting

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2009-03-03 23:00:38     while loading uboot via uart,i have met with the problems:timeout while sending; aborting

mingcai xu (EAST TIMOR)

Message: 70308   

 

While loading uboot via uart,i have met with the problems:

 

timeout while sending; aborting

 

 

 

The related SETTINGS:

 

BOARD: (BF527 EZ-KIT)

 

SW10: OFF ON OFF ON

 

BOOTMODE: 8

 

1:

 

At  first i use the kermit to test whether the coummication is normal or not.The  corresponding operation and result is as follows:

 

root@ubuntu:~# kermit -l /dev/ttyS0 -C connect

Removing stale lock /var/lock/LCK..ttyS0 (pid 22409 terminated)

Connecting to /dev/ttyS0, speed 115200

Escape character: Ctrl-\ (ASCII 28, FS): enabled

Type the escape character followed by C to get back,

or followed by ? to see other options.

----------------------------------------------------

_ _ _ 

 

 

From the resut,i think my pc can coummincate with the  board noramlly..

 

2: After that,i use the command to load the:

 

root@ubuntu:~# bfin-uclinux-ldr -l /root/Desktop/u-boot-bf527-ezkit-uart-2008R1.5.ldr /dev/ttyS0 && kermit -l /dev/ttyS0 -b 57600 -C connect

 

the result is :

 

Loading LDR /root/Desktop/u-boot-bf527-ezkit-uart-2008R1.5.ldr ... OK!

Removing stale lock '//var/lock/LCK..ttyS0'

Opening /dev/ttyS0 ... OK!

Configuring terminal I/O ... OK!

Trying to send autobaud ... OK!

Trying to read autobaud ... bfin-uclinux-ldr: received signal 14: timeout while sending; aborting

 

I  have checked the items mentioned in trouble shooting in http://docs.blackfin.uclinux.org/doku.php?id=bootloaders:u-boot:loading#troubleshooting

 

Expect someone can help me...

 

Thank you very much.

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2009-03-03 23:06:29     Re: while loading uboot via uart,i have met with the problems:timeout while sending; aborting

Mike Frysinger (UNITED STATES)

Message: 70309   

 

did you make sure to hit reset before running the ldr command ?

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2009-03-04 00:23:32     Re: while loading uboot via uart,i have met with the problems:timeout while sending; abort

mingcai xu (EAST TIMOR)

Message: 70313   

 

Hi,Mike,Thank you for your reply.

 

Every time i hit rest the board before i run the command:

 

bfin-uclinux-ldr -l /root/Desktop/u-boot-bf527-ezkit-uart-2008R1.5.ldr /dev/ttyS0 && kermit -l /dev/ttyS0 -b 115200 -C connect

 

or the baud rate is changed into 57600..

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2009-03-04 01:05:03     Re: while loading uboot via uart,i have met with the problems:timeout while sending; abort

Mike Frysinger (UNITED STATES)

Message: 70316   

 

when you type into kermit, do you keep getting back stuff ?  you should get back a few bytes the first time only.

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2009-03-04 01:29:43     Re: while loading uboot via uart,i have met with the problems:timeout while sending; abort

mingcai xu (EAST TIMOR)

Message: 70320   

 

Now i run :

 

kermit -l /dev/ttyS0 -C connect -b 57600

or kermit -l /dev/ttyS0 -C connect -b 115200

 

it returns nothing...

 

sorry,i donnot quite understand  your  reply above.

 

the running result is like this this time:

 

START:

 

root@ubuntu:~# kermit -l /dev/ttyS0 -C connect -b 57600

Connecting to /dev/ttyS0, speed 57600

Escape character: Ctrl-\ (ASCII 28, FS): enabled

Type the escape character followed by C to get back,

or followed by ? to see other options.

----------------------------------------------------

 

END

 

The procedure done by me is:

 

run the kermit command at first and then hit reset ,then press the space bar ..

 

and at last,i got nothing back.....

 

Thank you very much for you help...

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2009-03-04 11:28:06     Re: while loading uboot via uart,i have met with the problems:timeout while sending; abort

Robin Getz (UNITED STATES)

Message: 70374   

 

If you don'tget anything back - it normally means - (1) Boot mode is set wrong, (2) cable problem (3) power supply (4) blackfin doesn't support UART Boot.

 

-Robin

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