void TIMER_1_ISR(void)
{
asm("push {r0}");
irq_handler(TIMER_1, TIMER_1_DEV);
asm("pop {r0}");
asm("bx r0");
}
void HAL_RTCEx_WakeUpTimerEventCallback(RTC_HandleTypeDef *hrtc)
{
if (irq_handler) {
// Fire the user callback
irq_handler();
}
}
void TIMER_0_ISR(void)
{
asm("push {LR}");
irq_handler(TIMER_0, TIMER_0_DEV);
asm("pop {r0}");
asm("bx r0");
}
long handle_trap(long cause, long epc, long long regs[32]) {
/**
* Pending interrupt bit is cleared in the crt.S file by calling:
* csrc mip, MIP_MSIP
* If we woudn't do it the interrupt handler will be called infinitly
*
* Rise interrupt from the software maybe done sending a self-IPI:
* csrwi mipi, 0
*/
irqctrl_map *p_irqctrl = (irqctrl_map *)ADDR_NASTI_SLAVE_IRQCTRL;
IsrEntryType *isr_table = (IsrEntryType *)p_irqctrl->isr_table;
IRQ_HANDLER irq_handler;
p_irqctrl->dbg_cause = cause;
p_irqctrl->dbg_epc = epc;
if (cause == 0x8000000000000000l) {
for (int i = 0; i < CFG_IRQ_TOTAL; i++) {
if (p_irqctrl->irq_pending & (0x1 << i)) {
irq_handler = (IRQ_HANDLER)isr_table[i].handler;
p_irqctrl->irq_cause_idx = i;
irq_handler((void *)isr_table[i].arg);
p_irqctrl->irq_clear = 0x1 << i; // clear pending bit[0]
}
}
} else {
/// Exception trap
while (1) {}
}
return epc;
}
void interrupt_handler(struct interrupt_context* int_ctx)
{
if ( int_ctx->int_no < 32 )
isr_handler(int_ctx);
else if ( 32 <= int_ctx->int_no && int_ctx->int_no < 32 + 16 )
irq_handler(int_ctx);
}
/*
* Common interrupt handler.
*/
void
interrupt_handler(void)
{
uint32_t bits;
int vector, old_ipl, new_ipl;
/* Get interrupt source */
bits = ICU_IRQSTS;
for (vector = 0; vector < NIRQS; vector++) {
if (bits & (uint32_t)(1 << vector))
break;
}
if (vector == NIRQS)
goto out;
/* Adjust interrupt level */
old_ipl = irq_level;
new_ipl = ipl_table[vector];
if (new_ipl > old_ipl) /* Ignore spurious interrupt */
irq_level = new_ipl;
update_mask();
/* Dispatch interrupt */
interrupt_enable();
irq_handler(vector);
interrupt_disable();
/* Restore interrupt level */
irq_level = old_ipl;
update_mask();
out:
return;
}
void isr_exti4(void)
{
if (EXTI->PR & EXTI_PR_PR4) {
EXTI->PR |= EXTI_PR_PR4; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_4);
}
}
void HAL_RTC_AlarmAEventCallback(RTC_HandleTypeDef *hrtc)
{
if (irq_handler)
{
// Fire the user callback
irq_handler();
}
}
__attribute__ ((naked)) void TIMER_0_ISR_0(void)
{
ISR_ENTER();
DEBUG("\nenter ISR\n");
irq_handler(TIMER_0, TIMER_0_DEV_0, TIMER_0_DEV_1);
DEBUG("leave ISR\n\n");
ISR_EXIT();
}
void gpio_bbb_drv::begin () {
// Open the GPIO device
_fd = open(GPIO_DEV, O_RDWR );
if( _fd < 0 ) {
throw gpio_exception("Cannot open "GPIO_DEV", ", errno);
}
// Start the irq thread
irq_thread = std::thread([&](){ irq_handler();} );
}
void isr_handler(struct registers regs)
{
int int_no = regs.int_no;
if(int_no <= 19) //an exception has occured, panic!
handle_exception(regs);
else if(int_no >= IRQ_BASE)
irq_handler(regs);
else
printf("[INFO] Unhandled interrupt %d\n", int_no);
}
void isr_stub(struct int_frame *r) {
if (r->int_no < ISR_IRQ0 || r->int_no == ISR_UNKNOWN) {
fault_handler(r);
} else if (r->int_no < ISR_IRQ0 + 16) {
irq_handler(r);
} else if (r->int_no == ISR_SYSCALL) {
syscall(); // get syscall number form proc->fm
} else {
panic("isr_stub: wrong interrupt number");
}
}
void PIC::irq_dispatch(PIC_IRQ_CONTEXT* context)
{
int irq_id = context->int_id;
PIC_IRQ_HANDLER irq_handler = m_irq_handlers[irq_id];
if (irq_handler != NULL)
{
irq_handler(context);
}
//发送中断结束命令EOI（0x20)
outportb(PIC1_CMD_PORT, 0x20);//向主片发送中断结束命令
outportb(PIC2_CMD_PORT, 0x20);//向从片发送中断结束命令
}
void isr_exti15_10(void)
{
if (EXTI->PR & EXTI_PR_PR10) {
EXTI->PR |= EXTI_PR_PR10; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_10);
}
if (EXTI->PR & EXTI_PR_PR11) {
EXTI->PR |= EXTI_PR_PR11; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_11);
}
if (EXTI->PR & EXTI_PR_PR12) {
EXTI->PR |= EXTI_PR_PR12; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_12);
}
if (EXTI->PR & EXTI_PR_PR13) {
EXTI->PR |= EXTI_PR_PR13; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_13);
}
if (EXTI->PR & EXTI_PR_PR14) {
EXTI->PR |= EXTI_PR_PR14; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_14);
}
if (EXTI->PR & EXTI_PR_PR15) {
EXTI->PR |= EXTI_PR_PR15; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_15);
}
}
void isr_exti9_5(void)
{
if (EXTI->PR & EXTI_PR_PR5) {
EXTI->PR |= EXTI_PR_PR5; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_5);
}
if (EXTI->PR & EXTI_PR_PR6) {
EXTI->PR |= EXTI_PR_PR6; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_6);
}
if (EXTI->PR & EXTI_PR_PR7) {
EXTI->PR |= EXTI_PR_PR7; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_7);
}
if (EXTI->PR & EXTI_PR_PR8) {
EXTI->PR |= EXTI_PR_PR8; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_8);
}
if (EXTI->PR & EXTI_PR_PR9) {
EXTI->PR |= EXTI_PR_PR9; /* clear status bit by writing a 1 to it */
irq_handler(GPIO_IRQ_9);
}
}
void nrfx_rtc_0_irq_handler(void)
{
irq_handler(NRF_RTC0, NRFX_RTC0_INST_IDX, NRF_RTC_CC_CHANNEL_COUNT(0));
}
__attribute__ ((naked)) void TIMER_0_ISR(void)
{
ISR_ENTER();
irq_handler(TIMER_0, TIMER_0_DEV);
ISR_EXIT();
}
void UART_5_ISR(void)
{
irq_handler(5);
}
void UART_4_ISR(void)
{
irq_handler(4);
}
void UART_3_ISR(void)
{
irq_handler(3);
}
void UART_2_ISR(void)
{
irq_handler(2);
}
void UART_1_ISR(void)
{
irq_handler(1);
}
void UART_0_ISR(void)
{
irq_handler(0);
}
void UART_2_ISR(void)
{
irq_handler(UART_2, UART_2_DEV);
}
void UART_1_ISR(void)
{
irq_handler(UART_1, UART_1_DEV);
}
void UART_0_ISR(void)
{
irq_handler(UART_0, UART_0_DEV);
}
void TIMER4_IRQHandler(void)
{
irq_handler(NRF_TIMER4, &m_cb[TIMER4_INSTANCE_INDEX],
NRF_TIMER_CC_CHANNEL_COUNT(4));
}
void nrfx_rtc_1_irq_handler(void)
{
irq_handler(NRF_RTC1, NRFX_RTC1_INST_IDX, NRF_RTC_CC_CHANNEL_COUNT(1));
}
void nrfx_rtc_2_irq_handler(void)
{
irq_handler(NRF_RTC2, NRFX_RTC2_INST_IDX, NRF_RTC_CC_CHANNEL_COUNT(2));
}
void UART_5_ISR(void)
{
irq_handler(UART_DEV(5));
}
