bdiGDB for GNU Debugger, BDI2000 | User Manual 44 |
3.4 Telnet Interface
A Telnet server is integrated within the BDI. The Telnet channel is used by the BDI to output error messages and other information. Also some basic debug tasks may be done by using this interface. Enter help at the Telnet command prompt to get a list of the available commands.
Telnet Debug features:
•Display and modify memory locations
•Display and modify registers
•Single step a code sequence
•Set hardware breakpoints (for code and data accesses)
•Load a code file from any host
•Start / Stop program execution
•Programming and Erasing Flash memory
During debugging with GDB, the Telnet is mainly used to reboot the target (generate a hardware reset and reload the application code). It may be also useful during the first installation of the bdiGDB sys- tem or in case of special debug needs.
Multiple commands separated by a semicolon can be entered on one line.
Example of a Telnet session:
ARM1136>info |
|
Core number | : 0 |
Core state | : debug mode (ARM) |
Debug entry cause | : Vector Catch (RESET) |
Current PC | : 0x00000000 |
Current CPSR | : 0x000001d3 (Supervisor) |
ARM1136>rd |
|
GPR00: 000000fc f1c72a88 ff5ffdf7 3bb15ae6 | |
GPR04: f87f47f7 3c7c6959 ba398649 ddff6fed | |
GPR08: fff3a7b1 ff3defdf fafb5fff fb99eb7d | |
GPR12: bdffedbf 7edfffd7 8ce356cf 00000000 | |
PC : 00000000 | CPSR: 000001d3 |
| ||
ARM1136>md | 0 |
|
| |
00000000 | : 3de37365 ddaf8e8b 70a66636 52d11411 | es.=....6f.p...R | ||
00000010 | : b672ee06 d6a94323 6e73fd29 a8d6e9a1 | ..r.#C..).sn.... | ||
00000020 | : 8f0a1aad 6c1a840f e1b1de9d 802e4839 | .......l....9H.. | ||
00000030 | : 9f9c2afa 9b818b86 63fdbab8 f2a63b91 | .*.........c.;.. | ||
00000040 | : 440f75a4 fa7b254e c5efff5b 8f4829a5 | .u.DN%{.[....)H. | ||
|
| ..................... |
| |
Notes:
The DUMP command uses TFTP to write a binary image to a host file. Writing via TFTP on a Linux/ Unix system is only possible if the file already exists and has public write access. Use "man tftpd" to get more information about the TFTP server on your host.
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