GCC: OLD BLINKY IRQ EXAMPLE DOES NOT WORK

Information in this article applies to:

• GNU C Compiler for ARM Version 3.00
• GNU C Compiler for ARM All Versions

QUESTION

I downloaded an older version of Blinky IRQ example. When I connect to the target I receive the error:

"JTAG NOT FOUND"

Now I cannot download any code to the MCB2100 target. I have installed all of the updates, and I have re-checked USB. Why can I not connect to the target?

ANSWER

An early release of the Blinky IRQ example that went out with beta DKARM version contained an error in the code.

In the old code the PCON SFR was set to 0x01, putting the LPC2129 into idle mode. Once in Idle, the MCB2100 would not respond to JTAG signals.

The Blinky IRQ example has been corrected and updated. Please download the corrected version.

MORE INFORMATION

• Updated Blinky IRQ example

SEE ALSO

• ULINK: ARM DEBUGGER CRASHES
• GENERAL: PROGRAMMING FLASH ON MCB21XX BOARDS

Last Reviewed: Monday, July 10, 2006