hi
i'm working on lpc2103 and in practice when any interrupt happens , system will reset and then doesn't work properly ( sometime get stuck , sometime reset again ... ) , i think my setting is't right , any ideas what could be wrong ?
Sounds like you need to study how interrupt service routines need to be constructed on ARM7 processors. Tip: you need a __irq attribute, or create a wrapper to handle the different context the CPU arrives in, and how to return from an IRQ/FIQ.
i know that , and i have install_irq ( for lpc23xx ) function and used it and have its handler function too , but something is wrong , i don't know which part of it must be changed to work for lpc21xx . and i'm not sure about my setting .
here is my install_irq :
DWORD install_irq( DWORD IntNumber, void *HandlerAddr, DWORD Priority ) { DWORD *vect_addr; DWORD *vect_prio;
VICIntEnClr = 1 << IntNumber; /* Disable Interrupt */ if ( IntNumber >= VIC_SIZE ) { return ( FALSE ); } else { /* find first un-assigned VIC address for the handler */ vect_addr = (DWORD *)(VIC_BASE_ADDR + VECT_ADDR_INDEX + IntNumber*4); vect_prio = (DWORD *)(VIC_BASE_ADDR + VECT_PRIO_INDEX + IntNumber*4); *vect_addr = (DWORD)HandlerAddr; /* set interrupt vector */ *vect_prio = Priority; VICIntEnable = 1 << IntNumber; /* Enable Interrupt */ return( TRUE ); } }