Interrupt Services

Functions

void int_connect (irq_t irq, void(*isr)(void *), void *arg)
 
void int_enable (irq_t irq)
 
void int_disable (irq_t irq)
 
void int_lock (void)
 
void int_unlock (void)
 

Detailed Description

Function Documentation

◆ int_connect()

void int_connect ( irq_t  irq,
void(*)(void *)  isr,
void *  arg 
)

Connects the function isr as the Interrupt Service Routine for the interrupt specified by irq. The ISR will be called with the parameter arg when the interrupt is raised.

The arg parameter is normally used to let one ISR service several devices of the same type.

void uartISR (void * arg)
{
volatile uart_t * pUART = (uart_t *)arg;
// Handle UART interrupt
if (pUART->irq_status == ...)
{
...
}
}
void myInit (void)
{
int_connect (IRQ_UART0, uartISR, pUART0);
int_connect (IRQ_UART1, uartISR, pUART1);
int_enable (IRQ_UART0);
int_enable (IRQ_UART1);
}
Parameters
irqInterrupt to be serviced
isrInterrupt service routine
argSent as argument to ISR

◆ int_disable()

void int_disable ( irq_t  irq)

Disables the interrupt specified by irq.

Parameters
irqInterrupt to disable

◆ int_enable()

void int_enable ( irq_t  irq)

Enables the interrupt specified by irq.

Parameters
irqInterrupt to enable

◆ int_lock()

void int_lock ( void  )

Globally disables all maskable interrupts.

◆ int_unlock()

void int_unlock ( void  )

Globally enables all maskable interrupts.