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#include "uart.h"
#include "interrupts.h"
/**
@brief The undefined instruction interrupt handler
If an undefined instruction is encountered, the CPU will start
executing this function. Just trap here as a debug solution.
*/
void __attribute__((interrupt("UNDEF"))) undefined_instruction_vector(void)
{
uart_puts("Undefined instruction occured");
while( 1 )
{
/* Do Nothing! */
}
}
void __attribute__((section(".interrupt_vectors.data")))
(*system_reentry_point) (void);
void
__attribute__((interrupt("ABORT")))
__attribute__((section(".interrupt_vectors.text")))
abort_handler(void)
{
uart_puts("nwm\r\n");
system_reentry_point();
}
/* Here is your interrupt function */
void
__attribute__((interrupt("IRQ")))
__attribute__((section(".interrupt_vectors.text")))
irq_handler(void) {
/* You code goes here */
uart_puts("GOT INTERRUPT!\r\n");
local_timer_clr_reload_reg_t temp = { .IntClear = 1, .Reload = 1 };
QA7->TimerClearReload = temp; // Clear interrupt & reload
}
/* here is your main */
int enable_timer(void) {
QA7->TimerRouting.Routing = LOCALTIMER_TO_CORE0_IRQ; // Route local timer IRQ to Core0
QA7->TimerControlStatus.ReloadValue = 100; // Timer period set
QA7->TimerControlStatus.TimerEnable = 1; // Timer enabled
QA7->TimerControlStatus.IntEnable = 1; // Timer IRQ enabled
QA7->TimerClearReload.IntClear = 1; // Clear interrupt
QA7->TimerClearReload.Reload = 1; // Reload now
QA7->Core0TimerIntControl.nCNTPNSIRQ_IRQ = 1; // We are in NS EL1 so enable IRQ to core0 that level
QA7->Core0TimerIntControl.nCNTPNSIRQ_FIQ = 0; // Make sure FIQ is zero
uart_puts("Enabled Timer\r\n");
return(0);
}
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