I am trying to get an ISR+DSR working with no avail.
I have a setup where I am loading my application onto a board that has
Redboot, via gdb over the ethernet connection.
When the application starts up:
I have a diag_printf() in the hal_IRQ_handler() and can see that the
clock tick ISR is working fine.
When my interrupt occurs (via a pushbutton) I can see the vector # being
returned in the hal_IRQ_handler() but I don't see the ISR or DSR
diag_printf() getting called.
Also at this point the application locks up (I really don't know where
it is as I don't have any debugging at this point).
It looks like the ISR / DSR that I've created and attached isn't getting
called.
Any suggestions on how I should try and debug this?
Thanks!
Here are some code pieces for the ISR & DSR and initialization.
static cyg_interrupt int1;
static cyg_handle_t int1_handle;
cyg_uint32 gpio_isr(cyg_vector_t vector, cyg_addrword_t data) {
diag_printf("gpio_isr()\n");
cyg_interrupt_mask(vector);
cyg_interrupt_acknowledge(vector);
return (CYG_ISR_HANDLED | CYG_ISR_CALL_DSR); // Run the DSR
}
void gpio_dsr(cyg_vector_t vector, cyg_ucount32 count, cyg_addrword_t
data) {
diag_printf("gpio_dsr()\n");
intr_count++;
// !!! just clear PortB:0 for now
*GPIOBEOI = 0x1;
// !!! clear the bit(s)
//cyg_interrupt_unmask(vector);
}
void cyg_user_start(void) {
gpioInit();
cyg_vector_t int1_vector = CYGNUM_HAL_INTERRUPT_GPIO;
cyg_priority_t int1_priority = 0;
cyg_interrupt_create(int1_vector,
int1_priority,
(cyg_addrword_t) 0,
(cyg_ISR_t *) gpio_isr,
(cyg_DSR_t *) gpio_dsr,
&int1_handle,
&int1);
cyg_interrupt_attach(int1_handle);
cyg_interrupt_unmask(int1_vector);
cyg_thread_create(4, gpio_thread, (cyg_addrword_t) 0, "gpio_thread",
(void *) stack[0], STACKSIZE, &thread[0], &thread_obj[0]);
cyg_thread_resume(thread[0]);
}
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