Hello, You need to modify the sys_intvecs.asm to tell the CPU where is the ISR. For your application: ;------------------------------------------------------------------------------- ; interrupt vectors ; Please change the #0x???? for your specified image location defined in bl_config.h b _c_int00 b #0x200F8 ; 0x200F8=$20100-0x8; 0x20100 is the application start addr b #0x200F8 ; Software interrupt b #0x200F8 ; Abort (prefetch) b #0x200F8 ;, Abort (data) reservedEntry b reservedEntry ldr pc,[pc, #-0x1b0] ; IRQ ldr pc,[pc, #-0x1b0] ; FIQ
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