Mittwoch, 20. Februar 2019, 00:25 UTC+1
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OK, I apologize for the private messages - it appeared (from the threads I read) that you hadn't been around for a while. . . .Hi,
with such specific questions you will never get a RTFM here. One can see if a user did some research.
The most important thing is having a serial connection to the board.
Have you tried accessing the bootloader through telnet?
At the Wiki you find a memory map for the flash, too
Regards,
HWguru
Note: Please don't ask for help through private messages, other users may have the same question.
I will move this thread to "Software" as it is not related to "Hardware"
Dieser Beitrag wurde bereits 1 mal editiert, zuletzt von »jharris1993« (1. März 2011, 05:50)
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10 Pin AVR JTAG pinout 1 TCK pin pin GND 2 3 TDO pin pin VREF 4 5 TMS pin pin nSRST 6 7 VSUPPLY pin* pin nTRST 8 9 TDI pin pin GND 10 |
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10 Pin Altera ByteBlaster JTAG pinout 1 TCK pin pin GND 2 3 TDO pin pin VREF 4 5 TMS pin pin - 6 7 - pin pin - 8 9 TDI pin pin GND 10 20 Pin ARM JTAG Header Used with almost all ARM-based microcontrollers. 1 VREF pin pin VSUPPLY 2 3 nTRST pin pin GND 4 5 TDI pin pin GND 6 7 TMS pin pin GND 8 9 TCK pin pin GND 10 11 RTCK pin pin GND 12 13 TDO pin pin GND 14 15 nSRST pin pin GND 16 17 DBGRQ pin pin GND 18 19 DGBACK pin pin GND 20 |
Dieser Beitrag wurde bereits 3 mal editiert, zuletzt von »jharris1993« (1. März 2011, 22:11)
Absolutely correct! I have finally been able to connect to it. Thanks!Hi,
the Wiki should be ok again. It has been down for some maintenance.
Like I said before - it does not even get that far. There is no IP address, no polling, nothing but the BOOTP client request on 255.255.255.255. (BOOTP is like DHCP, except it is used to auto-load an operating system to a diskless workstation.)
I have some general information for you.
If the bootloader is still alive:
- The bootloader of a SL3316 based system should be possible being reached by telnet
- access with a 3.3V serial adapter is possible always
Now that I have access to that Wiki, I have found exactly the information I need to get this thing able to talk to a JTAG adapter. Thanks!
JTAG:
Playing around with various adapters will not lead to success.
There is no "standard" way for accessing the CPU and Flash pins through the JTAG interface.
The only way for access is documented at the forum (mainly German) and at the Wiki (English)
I examined my board and there are a multitude of ground connections available. I can probably tie several back to my JTAG.
GND connection:
It depends on the adapter you are using.
If it is of "LPT Wiggler" type and connected through some extension cable you will need more than on GND pin connected at the LPT side.
If the cable is short (15-20cm) one GND connection should be sufficient.
Interesting! "Wheat beer" is apparently the translation according to Wikipedia. There appear to be some "less bitter" varieties that I might even find drinkable! I'll have to try some, assuming I can find some in the US that doesn't taste like dishwater. I like a Russian beer - Baltica #7 - when I am in Russia. Here in the US, Baltica #7 tastes absolutely TERRIBLE!
Likewise. I really do appreciate all your help.
Regards,
HWguru
Like I said before - it does not even get that far. There is no IP address, no polling, nothing but the BOOTP client request on 255.255.255.255. (BOOTP is like DHCP, except it is used to auto-load an operating system to a diskless workstation.)
As I know there is not any packet sent by the bootloader
But there is a small time window at boot where you can access the bootloader with telnet.
The easiest way is using Flashstart.
Of course you need to know the standard IP address being used by the bootloader which is fixed.
Note: always disconnect the disk before flashing or using JTAG.
HWguru