uboot input problem

Hello,

while updating firmware i got messed up with electricity and since then I can not access my router..

i got cp2102 usb adapter and by connecting it to tx rx and gnd to the board I got following result

U-Boot 1.1.15P50_16R4F (May 21 2012 - 16:19:46)

U-Boot code: 40780000 -> 407948E8 BSS: -> 407AC000
System Memory Map:
0x00000000-0x01FFFFFF: SDRAM Bank 0
0x19C00000-0x1E7FFFFF: Memory Mapped IO Space-AHB
0x19C00000-0x19C1FFFF: Static/SDRAM Memory Controller
0x19C40000-0x19C5FFFF: Interrupt Controller
0x19C60000-0x19C7FFFF: AHB Arbiter
0x19C80000-0x19C9FFFF: MAC 0
0x19CA0000-0x19CBFFFF: MA1 0
0x1E700000-0x1E71FFFF: HDMA
0x1E800000-0x1EFFFFFF: Memory Mapped IO Space-APB
0x1E800000-0x1E81FFFF: Timer 0/1/2/3
0x1E840000-0x1E85FFFF: UART 0
0x1E880000-0x1E89FFFF: SPI
0x1E8A0000-0x1E8BFFFF: GPIO 0
0x1E8C0000-0x1E8DFFFF: WDT
0x1E8E0000-0x1E8FFFFF: SCU
0x1E940000-0x1E95FFFF: ACI0(PL040)
0x1E960000-0x1E97FFFF: ACI1(PL040)
0x1F000000-0x1F7FFFFF: Flash Bank 0
0x40000000-0x41FFFFFF: SDRAM Bank 1
RAM Configuration:
Bank #0: 40000000 32 MB
Board: 5VT1310-EVB-V1.4(CPU Speed 270 MHz)
SST-36VF3203 = 4MB; start at 0x1F000000;
Flash: 4 MB
In: serial
Out: serial
Err: serial
Hit any key to stop autoboot: 0
5VT1310-EVB#


i tried hitting key 1000 times but i can not type anything , can please anyone help me where i went wrong.. thank you

sarweezy Wrote:
-------------------------------------------------------
> Hello,
>
> while updating firmware i got messed up with
> electricity and since then I can not access my
> router..
>
> i got cp2102 usb adapter and by connecting it to
> tx rx and gnd to the board I got following result
>
> U-Boot 1.1.15P50_16R4F (May 21 2012 - 16:19:46)
>
> U-Boot code: 40780000 -> 407948E8 BSS: ->
> 407AC000
> System Memory Map:
> 0x00000000-0x01FFFFFF: SDRAM Bank 0
> 0x19C00000-0x1E7FFFFF: Memory Mapped IO Space-AHB
> 0x19C00000-0x19C1FFFF: Static/SDRAM Memory
> Controller
> 0x19C40000-0x19C5FFFF: Interrupt
> Controller
> 0x19C60000-0x19C7FFFF: AHB Arbiter
> 0x19C80000-0x19C9FFFF: MAC 0
> 0x19CA0000-0x19CBFFFF: MA1 0
> 0x1E700000-0x1E71FFFF: HDMA
> 0x1E800000-0x1EFFFFFF: Memory Mapped IO Space-APB
> 0x1E800000-0x1E81FFFF: Timer 0/1/2/3
> 0x1E840000-0x1E85FFFF: UART 0
> 0x1E880000-0x1E89FFFF: SPI
> 0x1E8A0000-0x1E8BFFFF: GPIO 0
> 0x1E8C0000-0x1E8DFFFF: WDT
> 0x1E8E0000-0x1E8FFFFF: SCU
> 0x1E940000-0x1E95FFFF: ACI0(PL040)
> 0x1E960000-0x1E97FFFF: ACI1(PL040)
> 0x1F000000-0x1F7FFFFF: Flash Bank 0
> 0x40000000-0x41FFFFFF: SDRAM Bank 1
> RAM Configuration:
> Bank #0: 40000000 32 MB
> Board: 5VT1310-EVB-V1.4(CPU Speed 270 MHz)
> SST-36VF3203 = 4MB; start at 0x1F000000;
> Flash: 4 MB
> In: serial
> Out: serial
> Err: serial
> Hit any key to stop autoboot: 0
> 5VT1310-EVB#
>
>
> i tried hitting key 1000 times but i can not type
> anything , can please anyone help me where i went
> wrong.. thank you

Usually it is just a poor connection on your Tx wire, since your Rx is Ok.

Double check your wire, solder,..

-bodhi
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Edited 1 time(s). Last edit at 04/04/2016 11:33PM by bodhi.

bodhi Wrote:
-------------------------------------------------------
> sarweezy Wrote:
> --------------------------------------------------
> -----
> > Hello,
> >
> > while updating firmware i got messed up with
> > electricity and since then I can not access my
> > router..
> >
> > i got cp2102 usb adapter and by connecting it
> to
> > tx rx and gnd to the board I got following
> result
> >
> > U-Boot 1.1.15P50_16R4F (May 21 2012 - 16:19:46)
> >
> > U-Boot code: 40780000 -> 407948E8 BSS: ->
> > 407AC000
> > System Memory Map:
> > 0x00000000-0x01FFFFFF: SDRAM Bank 0
> > 0x19C00000-0x1E7FFFFF: Memory Mapped IO
> Space-AHB
> > 0x19C00000-0x19C1FFFF: Static/SDRAM
> Memory
> > Controller
> > 0x19C40000-0x19C5FFFF: Interrupt
> > Controller
> > 0x19C60000-0x19C7FFFF: AHB Arbiter
> > 0x19C80000-0x19C9FFFF: MAC 0
> > 0x19CA0000-0x19CBFFFF: MA1 0
> > 0x1E700000-0x1E71FFFF: HDMA
> > 0x1E800000-0x1EFFFFFF: Memory Mapped IO
> Space-APB
> > 0x1E800000-0x1E81FFFF: Timer 0/1/2/3
> > 0x1E840000-0x1E85FFFF: UART 0
> > 0x1E880000-0x1E89FFFF: SPI
> > 0x1E8A0000-0x1E8BFFFF: GPIO 0
> > 0x1E8C0000-0x1E8DFFFF: WDT
> > 0x1E8E0000-0x1E8FFFFF: SCU
> > 0x1E940000-0x1E95FFFF: ACI0(PL040)
> > 0x1E960000-0x1E97FFFF: ACI1(PL040)
> > 0x1F000000-0x1F7FFFFF: Flash Bank 0
> > 0x40000000-0x41FFFFFF: SDRAM Bank 1
> > RAM Configuration:
> > Bank #0: 40000000 32 MB
> > Board: 5VT1310-EVB-V1.4(CPU Speed 270 MHz)
> > SST-36VF3203 = 4MB; start at
> 0x1F000000;
> > Flash: 4 MB
> > In: serial
> > Out: serial
> > Err: serial
> > Hit any key to stop autoboot: 0
> > 5VT1310-EVB#
> >
> >
> > i tried hitting key 1000 times but i can not
> type
> > anything , can please anyone help me where i
> went
> > wrong.. thank you
>
> Usually it is just a poor connection on your Tx
> wire, since your Rx is Ok.
>
> Double check your wire, solder,..



Thanks for your reply.. In my Goip tutorial they mentioned about pl2302 cable
And what I used is cp2102 usb .. Can it be a problem bro!

sarweezy,

> Thanks for your reply.. In my Goip tutorial they
> mentioned about pl2302 cable
> And what I used is cp2102 usb .. Can it be a
> problem bro!

CP2012 is not a problem. But note that the Rx and Tx are "true" with CP2102. Meaning usually this converter already crossed the wires. With the PL2302 you would connect Tx to Rx and Rx to Tx. With the CP2012 connect Tx to Tx, Rx to Rx.

When in doubt, just swap the Tx and Rx.

-bodhi
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No bro when i swap RX and TX, it says unknown device

Bro can you please check the attachment, this is the cable they asked me to make, but since i purchased cp2102, it works same as this right?

sarweezy Wrote:
-------------------------------------------------------
> Bro can you please check the attachment, this is
> the cable they asked me to make, but since i
> purchased cp2102, it works same as this right?

I could not say it will work the same or not. Serial console usually the same every where you see them in small ARM boards. And a CP2xxx or PL2xx will work. Just that sometime you're unlucky and got a bad one then it could be a problem. You could loop back the Tx and Rx to see if the wires are OK.

-bodhi
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Bro, looping RX and TX works .. result is attached .. :(

sarweezy Wrote:
-------------------------------------------------------
> Bro, looping RX and TX works .. result is attached
> .. :(

Well, that means your module is good.

- chech the header on the router to see if wire got loosen, or bad soldering.
- chang the baud rate, it could be that the router uses a different one.

-bodhi
===========================
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In maunal it says to use 38400 braud rate, but when I change it to 115200, and power up the board it restarts my laptop.

also can it be a voltage issue? somehow my laptop is not providing sufficient voltage to board?.



Edited 1 time(s). Last edit at 04/05/2016 06:21PM by sarweezy.

sarweezy Wrote:
-------------------------------------------------------
> In maunal it says to use 38400 braud rate, but
> when I change it to 115200, and power up the board
> it restarts my laptop.
>
> also can it be a voltage issue? somehow my laptop
> is not providing sufficient voltage to board?.

No :) Do not connect 3.3V power.

And Baudrate might even be slower. Try 9600?

-bodhi
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Edited 2 time(s). Last edit at 04/05/2016 06:25PM by bodhi.

bro i bought another usb adapter and tried lower braudrate too it didnot work..

when board is powered on, on multimeter when i place black probe to to gnd and red to RX, it supposed to show any voltage or it would be zero?

on borad black probe on gnd i get readings on two holes out of 3.. just one hole shows zero reading,..

Maybe in the manual they showed wrong ports..



Edited 1 time(s). Last edit at 04/09/2016 05:20PM by sarweezy.

Perhaps if you tell us what device is this, somebody will have an idea.

-bodhi
===========================
Forum Wiki
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bodhi Wrote:
-------------------------------------------------------
> Perhaps if you tell us what device is this,
> somebody will have an idea.


It is goip 16 , gsm gateway

can you tell me how to test tx rx gnd on the board?

how to test if TX of board is connected to the right right connected to my usb adapter

I have same router, I tested it on other router it worked.. however i got 1.8v on rx when board is powered on, which i dont get on this router.. probably this is why I cant send tx from my pc..

Is there any way to recover rx on board..


Thanks

> I have same router, I tested it on other router it
> worked..
> however i got 1.8v on rx when board is
> powered on, which i dont get on this router..

So it's a faulty serial port.

>
> Is there any way to recover rx on board..

I don't have any idea. Anybody?

-bodhi
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