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I got only .axf file from others. I have keil uvision and JTAG. my target device lpc23xx.how to flah axf file.?
You can use fromelf to get from a .AXF to a .HEX if you have tools for that.
For a ULink JTAG one of the techniques is to create a shell project for the specific chip, add in the flash algorithm for the part, and then copy a suitably named file into the output directory and use the Flash -> Download menu.
Other JTAG tools my have their own flashing software. An AXF file uses an ELF format.