Using the MCUXpresso SDK with i.MX6UL, I need to implement software interrupt handlers.
i.MX6UL implements the ARM GIC. My attempt at using Software0_IRQn is:
Install handler for Software interrupt 0:
SystemInstallIrqHandler( Software0_IRQn, <handler>, 0 );
GIC_SetPriority( Software0_IRQn, <priority>);
GIC_EnableIRQ( Software0_IRQn );
Invoke handler by calling this function:
static void GIC_software_interrupt( IRQn_Type IRQn )
{
GIC_Type *gic = ( GIC_Type* )( __get_CBAR() & 0xFFFF0000UL );
// Invoke IRQn on this processor.
gic->D_SGIR = ( 2 << 24 ) | ( uint32_t )IRQn;
}
This doesn't work. The handler is never called. Anyone know what I'm doing wrong?
