详细说明：5509开发板测试程序,通过观测XF引脚是否有方波来初步估计试验板硬件是否有问题..文件列表: LED30 .....\55xdsp.lib .....\led .....\...\cc_build_Debug.log .....\...\Debug .....\...\Debug.lkf .....\...\Debug.lkv .....\...\led.cmd .....\...\led.paf .....\...\led.pjt .....\...\newled.asm .....\led.asm .....\rts55x.lib .....\vectors.asm……