ARM7 development process can be used for reference and learning, thank you

eint3_test
..........\debug
..........\led_test.ews
..........\led_test.opt
..........\led_test_flash.pjf
..........\led_test_ram.pjf
..........\src
..........\...\interrupt.s
..........\...\led_pll_test.c

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