Posted by Yash Following is a simple interrupt program which works very well thro' HDI but when flashed does not work. The program simply toogles the LED on EVB ( port 1.5 ) when interrupt (Channel 3 overflow) is generated. I have made sure that program comes till while(1); loop using LED' (before interrupt is enabled) Am I missing something ? -----------------Program Start --------------- typedef void (*fp) (void); __inline__ void set_interrupt_mask (unsigned char mask) __attribute__ ((always_inline)); extern __inline__ void set_interrupt_mask (unsigned char mask) const fp HardwareVectors[] __attribute__ ((section (".vects" /* 32 to 36 TPU Channel 0 */ (fp)(0), /* 32 - TGI0A */ (fp)(0), (fp)(0), (fp)(0),/* 37,38, 39 - Reserved */ /* 40 to 43 TPU Channel 1 */ (fp)(0), /* 40 - TGI1A */ /* 44 to 47 TPU Channel 2 */ (fp)(0), /* 44 - TGI2A */ /* 48 to 52 TPU Channel 3 */ (fp)(0), /* 48 - TGI3A */ #ifndef ROMSTART // HDI-M / GDB-Stub - Shadow Vector (fp)(0), (fp)(0), (fp)(0), /* 53,54, 55 - Reserved */ }; P1DR ^= 0x20; /* Toggle LED */ TPU_TCNT3 = 0x0000; TPU_TSR3 = c & 0xEF; /* Clear Overflow */ void timer3_init(void) /* /* Timer interrupt Enable register TPU_TIER3 = 0x30; /* Load Counter value */ ITU_TSTR = 0x08; /* Start Channel 3 */ void hw_initialise (void) int main(void) Thank you in advance. Yash
on April 21, 2003, 13:07:14
203.129.230.91
Hi,
I am using GNUH8 (h8300-coff-gcc) to build an application for EVB2623.
Could some help to solve the problem ?
#include "ioh82623.h"
void start (void);
void timer3_OV_isr(void) __attribute__((interrupt_handler));
{
asm ("mov %0l, r0l"::"r"(mask));
asm ("and.b #01,r0l"
;
asm ("rotr.b r0l";
asm ("ldc r0l,ccr";
})) = {
#ifndef ROMSTART // HDI-M / GDB-Stub - Shadow Vector
0x5a000000 + start, /* 0 - Reset vector */
#else
start, /* 0 - Reset vector */
#endif
(fp)(0), /* 1 - Manual reset */
(fp)(0), (fp)(0), (fp)(0), /* 2,3,4 - Reserved */
(fp)(0), /* 5 - Trace */
(fp)(0), /* 6 - Direct Transitions */
(fp)(0), /* 7 - NMI */
(fp)(0), (fp)(0), (fp)(0), (fp)(0), /* 8,9,10,11 - Trap */
(fp)(0), (fp)(0), (fp)(0), (fp)(0), /* 12,13,14,15 - Reserved */
(fp)(0), /* 16 - IRQ0 */
(fp)(0), /* 17 - IRQ1 */
(fp)(0), /* 18 - IRQ2 */
(fp)(0), /* 19 - IRQ3 */
(fp)(0), /* 20 - IRQ4 */
(fp)(0), /* 21 - IRQ5 */
(fp)(0), (fp)(0), /* 22,23 - Reserved */
(fp)(0), /* 24 - DTC*/
(fp)(0), /* 25 - Watchdog timer 0 */
(fp)(0), /* 26 - Reserved */
(fp)(0), /* 27 - PC Break */
(fp)(0), /* 28 - AD */
(fp)(0), /* 29 - Watchdog Timer 1 */
(fp)(0), (fp)(0), /* 30,31 - Reserved */
(fp)(0), /* 33 - TGI0B */
(fp)(0), /* 34 - TGI0C */
(fp)(0), /* 35 - TGI0D */
(fp)(0), /* 36 - TGI0V */
(fp)(0), /* 41 - TGI1B */
(fp)(0), /* 42 - TGI1V */
(fp)(0), /* 43 - TGI1U */
(fp)(0), /* 45 - TGI2B */
(fp)(0), /* 46 - TGI2V */
(fp)(0), /* 47 - TGI2U */
(fp)(0), /* 49 - TGI3B */
(fp)(0), /* 50 - TGI3C */
(fp)(0), /* 51 - TGI3D */
0x5a000000 + timer3_OV_isr, /* 52 - TGI3V */
#else
timer3_OV_isr, /* 52 - TGI3V */
#endif
void timer3_OV_isr(void)
{
unsigned char c;
/* Timer Status Register 3
Bit 4 = Overflow clear */
c = TPU_TSR3;
}
{
/* Channel 3 TCR - Timer Control Regiter
Bit 7,6,5 - 0 ; TCNT Clearing Disabled
Bit 4,3 - 0 ; Rising edge
Bit 2,1,0 - 3 , Internal Clock /64
*/
TPU_TCR3 = 0x3;
Timer Mode Register TMDR3
Bit 7,6 - 3 ; Reserved
Bit 5 - 0 ; TGRB Operates normally
Bit 4 - 0 ; TGRA Operates normally
Bit 3,2,1,0 - 0 ; Normal operation
*/
TPU_TMDR3 = 0xc0;
Bit 7 - 0 ; A/D conversion start request generation disabled
Bit 6 = 0 ,5 = 1 ; Reserved
Bit 4 = 1 ; Interrupt requests (TCIV) by TCFV enabled
Bit 3,2,1,0 = 0 ; D,C,B and A disabled.
*/
TPU_TCNT3 = 0x0000;
set_interrupt_mask(0);
}
{
ABWCR = 0xFC ; /* */
ASTCR = 0xFF ; /* */
WCRL = 0xFC ; /* */
BCRH = 0xD0 ; /* */
PFCR = 0x0F ; /* */
PCDDR = 0xFF ; /* */
}
{
P1DDR |= 0x20; /* set port1/bit 5 for output */
timer3_init();
while(1);
}
-----------------Program End---------------
I can send the complete project if required.
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