static int gpioh_set_int_status( elua_int_id id, elua_int_resnum resnum, int status )
{
int prev = gpioh_get_int_status( id, resnum );
u32 mask = 1 << exint_gpio_to_src( resnum );
EXTI_InitTypeDef exti_init_struct;
if( status == PLATFORM_CPU_ENABLE )
{
// Configure port for interrupt line
//GPIO_EXTILineConfig( PLATFORM_IO_GET_PORT( resnum ), PLATFORM_IO_GET_PIN( resnum ) );
EXTI_StructInit(&exti_init_struct);
exti_init_struct.EXTI_Line = exti_line[ exint_gpio_to_src( resnum ) ];
exti_init_struct.EXTI_Mode = EXTI_Mode_Interrupt;
if( ( ( ( EXTI->RTSR & mask ) != 0 ) && ( id == INT_GPIO_NEGEDGE ) ) ||
( ( ( EXTI->FTSR & mask ) != 0 ) && ( id == INT_GPIO_POSEDGE ) ) )
exti_init_struct.EXTI_Trigger = EXTI_Trigger_Rising_Falling;
else
exti_init_struct.EXTI_Trigger = id == INT_GPIO_POSEDGE ? EXTI_Trigger_Rising : EXTI_Trigger_Falling;
exti_init_struct.EXTI_LineCmd = ENABLE;
EXTI_Init(&exti_init_struct);
EXTI_ClearITPendingBit( exti_line[ exint_gpio_to_src( resnum ) ] );
}
else
{
//Disable edge
if( id == INT_GPIO_POSEDGE )
EXTI->RTSR &= ~mask;
else
EXTI->FTSR &= ~mask;
//If no edges enabled, disable line interrupt
if( ( ( EXTI->RTSR | EXTI->FTSR ) & mask ) == 0 )
EXTI->IMR &= ~mask;
}
return prev;
}
static int gpioh_set_int_status( elua_int_id id, elua_int_resnum resnum, int status )
{
int crt_status = gpioh_get_int_status( id, resnum );
int port, pin;
port = PLATFORM_IO_GET_PORT( resnum );
pin = PLATFORM_IO_GET_PIN( resnum );
if( id == INT_GPIO_POSEDGE )
{
if( status == PLATFORM_CPU_ENABLE )
*posedge_regs[ port ] |= 1 << pin;
else
*posedge_regs[ port ] &= ~( 1 << pin );
}
else
{
if( status == PLATFORM_CPU_ENABLE )
*negedge_regs[ port ] |= 1 << pin;
else
*negedge_regs[ port ] &= ~( 1 << pin );
}
EXTINT |= 1 << EINT3_BIT;
return crt_status;
}
static int int_gpio_negedge_get_status( elua_int_resnum resnum )
{
return gpioh_get_int_status( INT_GPIO_NEGEDGE, resnum );
}
static int int_gpio_posedge_get_status( elua_int_resnum resnum )
{
return gpioh_get_int_status( INT_GPIO_POSEDGE, resnum );
}