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Can someone familiar with Blackfin help me on this? I am using PF7 as PF Interrupt A. The intrrupt is obviously detected because SIC_ISR is set to 0x00020000 (PF Int A is asserted). However, when I press SW7 (PF7), nothing happens. My SIC_IMASK is 0x0002000 so PF Interrupt is enabled. The SIC_IAR2 is 0x0000050 (FP Interrupt A - Peripheral #17 is mapped to IVG 12). I am sure my ISR for IVG12 is defined and registered because ISR responds to raise_intr(12). Thanks. #include "def21535.h" #include "ccblkfn.h" #include <sys/exception.h> /*global variables*/ volatile unsigned short * fio_dir_reg; volatile unsigned short * fio_set_reg; volatile unsigned short * fio_clr_reg; volatile unsigned short * fio_maska_s; volatile unsigned short * fio_maska_c; volatile unsigned long * fio_sic_imask; volatile unsigned long * fio_sic_iar2; volatile unsigned short * fio_polar_reg; volatile unsigned short * fio_edge_reg; volatile unsigned short * fio_both_reg; /*function prototype*/ void raise_intr(int); void sti(unsigned mask); unsigned cli(); EX_INTERRUPT_HANDLER(flash); /*void main()*/ void main() { /* setup the general purpose register first */ fio_dir_reg = (unsigned short *)FIO_DIR; fio_set_reg = (unsigned short *)FIO_FLAG_S; fio_clr_reg = (unsigned short *)FIO_FLAG_C; fio_maska_s = (unsigned short *)FIO_MASKA_S; fio_maska_c = (unsigned short *)FIO_MASKA_C; fio_sic_imask = (unsigned long *)SIC_IMASK; fio_sic_iar2 = (unsigned long *)SIC_IAR2; fio_polar_reg = (unsigned short *)FIO_POLAR; fio_edge_reg = (unsigned short *)FIO_EDGE; fio_both_reg = (unsigned short *)FIO_BOTH; /* disable interrupts */ cli(); /* set PF0 - PF3 as output */ *fio_dir_reg = (unsigned short)0x000F; asm("ssync;"); /* set SIC_IMASK */ *fio_sic_imask = (unsigned long)SIC_MASK17; /* set SIC_IAR2 */ //IAR 5 -> Int A -> IVG 12 *fio_sic_iar2 = (unsigned long)P17_IVG12; /* set FIO_POLAR */ *fio_polar_reg = (unsigned short)0x0000; /* set FIO_EDGE */ *fio_edge_reg = (unsigned short)0x0080; /* set FIO_BOTH */ *fio_both_reg = (unsigned short)0x0000; /* set PF mask A 0x0080*/ *fio_maska_s = (unsigned short)0xFFFF; *fio_maska_c = (unsigned short)0xFF7F; asm("ssync;"); /* register handler, set IMASK and enable interrupts*/ register_handler(ik_ivg12,flash); //raise_intr(12); while(1); } EX_INTERRUPT_HANDLER(flash) { *fio_clr_reg = (unsigned short)0x0080; putchar('t'); } |
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Blackfin - ISR not executed
Started by ●November 15, 2002
Reply by ●November 16, 20022002-11-16
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What chip version do you have? If you have 0.2 there is a problem with the SIC_IMASK. The problem is that a "0" enable the interrupt and a "1" disable interrupt. This is corrected in the next releases. /Erik -----Original Message----- From: vicwan713 [mailto:] Sent: 15. november 2002 20:35 To: Subject: [adsp] Blackfin - ISR not executed Can someone familiar with Blackfin help me on this? I am using PF7 as PF Interrupt A. The intrrupt is obviously detected because SIC_ISR is set to 0x00020000 (PF Int A is asserted). However, when I press SW7 (PF7), nothing happens. My SIC_IMASK is 0x0002000 so PF Interrupt is enabled. The SIC_IAR2 is 0x0000050 (FP Interrupt A - Peripheral #17 is mapped to IVG 12). I am sure my ISR for IVG12 is defined and registered because ISR responds to raise_intr(12). Thanks. #include "def21535.h" #include "ccblkfn.h" #include <sys/exception.h> /*global variables*/ volatile unsigned short * fio_dir_reg; volatile unsigned short * fio_set_reg; volatile unsigned short * fio_clr_reg; volatile unsigned short * fio_maska_s; volatile unsigned short * fio_maska_c; volatile unsigned long * fio_sic_imask; volatile unsigned long * fio_sic_iar2; volatile unsigned short * fio_polar_reg; volatile unsigned short * fio_edge_reg; volatile unsigned short * fio_both_reg; /*function prototype*/ void raise_intr(int); void sti(unsigned mask); unsigned cli(); EX_INTERRUPT_HANDLER(flash); /*void main()*/ void main() { /* setup the general purpose register first */ fio_dir_reg = (unsigned short *)FIO_DIR; fio_set_reg = (unsigned short *)FIO_FLAG_S; fio_clr_reg = (unsigned short *)FIO_FLAG_C; fio_maska_s = (unsigned short *)FIO_MASKA_S; fio_maska_c = (unsigned short *)FIO_MASKA_C; fio_sic_imask = (unsigned long *)SIC_IMASK; fio_sic_iar2 = (unsigned long *)SIC_IAR2; fio_polar_reg = (unsigned short *)FIO_POLAR; fio_edge_reg = (unsigned short *)FIO_EDGE; fio_both_reg = (unsigned short *)FIO_BOTH; /* disable interrupts */ cli(); /* set PF0 - PF3 as output */ *fio_dir_reg = (unsigned short)0x000F; asm("ssync;"); /* set SIC_IMASK */ *fio_sic_imask = (unsigned long)SIC_MASK17; /* set SIC_IAR2 */ //IAR 5 -> Int A -> IVG 12 *fio_sic_iar2 = (unsigned long)P17_IVG12; /* set FIO_POLAR */ *fio_polar_reg = (unsigned short)0x0000; /* set FIO_EDGE */ *fio_edge_reg = (unsigned short)0x0080; /* set FIO_BOTH */ *fio_both_reg = (unsigned short)0x0000; /* set PF mask A 0x0080*/ *fio_maska_s = (unsigned short)0xFFFF; *fio_maska_c = (unsigned short)0xFF7F; asm("ssync;"); /* register handler, set IMASK and enable interrupts*/ register_handler(ik_ivg12,flash); //raise_intr(12); while(1); } EX_INTERRUPT_HANDLER(flash) { *fio_clr_reg = (unsigned short)0x0080; putchar('t'); } _____________________________________ Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. _____________________________________ About this discussion group: To Join: Send an email to To Post: Send an email to To Leave: Send an email to Archives: http://groups.yahoo.com/group/adsp Other Groups: http://www.dsprelated.com/groups.php3 ">http://docs.yahoo.com/info/terms/ |
