/*
** ===================================================================
** Method : MQX1_PEX_RTOS_InstallInterrupt (component MQXLite)
**
** Description :
** Installs the interrupt service routine through the RTOS.
** This method is internal. It is used by Processor Expert only.
** ===================================================================
*/
void PEX_RTOS_InstallInterrupt(IRQInterruptIndex IntVector, void (*IsrFunction)(void *), void *IsrParam)
{
if (IntVector >= 15) {
/* Interrupts are install through the MQX standard ISR installation mechanism */
(void)_int_install_isr(IntVector, (INT_ISR_FPTR)IsrFunction, IsrParam);
} else {
/* Interrupts are install through the MQX kernel ISR installation mechanism */
(void)_int_install_kernel_isr(IntVector, (INT_KERNEL_ISR_FPTR)IsrFunction);
}
}
/****************************************************************
*
* Function Name : init_interrupt_btn
* Comments :
* Open the pin BSP_BTN1 for input, initialize interrupt and set
* interrupt handler.
*
*****************************************************************/
void init_interrupt_btn(void * button)
{
LWGPIO_STRUCT_PTR btn_ptr = (LWGPIO_STRUCT_PTR) button;
/* opening pins for input */
if (!lwgpio_init(btn_ptr, BSP_BUTTON1, LWGPIO_DIR_INPUT, LWGPIO_VALUE_NOCHANGE))
{
printf("Initializing button GPIO as input failed.\n");
_task_block();
}
#ifdef BSP_BUTTON1_MUX_IRQ
lwgpio_set_functionality(btn_ptr, BSP_BUTTON1_MUX_IRQ);
#if defined(BSP_BUTTONS_ACTIVE_HIGH)
lwgpio_set_attribute(btn_ptr, LWGPIO_ATTR_PULL_DOWN, LWGPIO_AVAL_ENABLE);
#else
lwgpio_set_attribute(btn_ptr, LWGPIO_ATTR_PULL_UP, LWGPIO_AVAL_ENABLE);
#endif
/* enable gpio functionality for given pin, react on falling edge */
if (! lwgpio_int_init(btn_ptr, LWGPIO_INT_MODE_FALLING))
{
printf("Initializing button GPIO for interrupt failed.\n");
_task_block();
}
/* Install the interrupt directly to the vector table in the processor. */
if(! _int_install_kernel_isr(lwgpio_int_get_vector(btn_ptr), btn_kernel_isr))
{
printf("Install interrupt handler to hardware vector table failed.\n");
_task_block();
}
/* set the interrupt level, and unmask the interrupt in interrupt controller */
if(MQX_OK != _bsp_int_init(lwgpio_int_get_vector(btn_ptr), 3, 0, TRUE))
{
printf("Initialize interrupt failed.\n");
_task_block();
}
/* enable interrupt on GPIO peripheral module */
lwgpio_int_enable(btn_ptr, TRUE);
#else
printf("This platform does not support pin mux interrupt function\n");
_task_block();
#endif /* BSP_BUTTON1_MUX_IRQ */
}
