68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2010 Thomas Otto <tommi@viadmin.org>
|
|
* Copyright (C) 2012 Fergus Noble <fergusnoble@gmail.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <libopencm3/stm32/nvic.h>
|
|
|
|
void nvic_enable_irq(u8 irqn)
|
|
{
|
|
NVIC_ISER(irqn / 32) = (1 << (irqn % 32));
|
|
}
|
|
|
|
void nvic_disable_irq(u8 irqn)
|
|
{
|
|
NVIC_ICER(irqn / 32) = (1 << (irqn % 32));
|
|
}
|
|
|
|
u8 nvic_get_pending_irq(u8 irqn)
|
|
{
|
|
return NVIC_ISPR(irqn / 32) & (1 << (irqn % 32)) ? 1 : 0;
|
|
}
|
|
|
|
void nvic_set_pending_irq(u8 irqn)
|
|
{
|
|
NVIC_ISPR(irqn / 32) = (1 << (irqn % 32));
|
|
}
|
|
|
|
void nvic_clear_pending_irq(u8 irqn)
|
|
{
|
|
NVIC_ICPR(irqn / 32) = (1 << (irqn % 32));
|
|
}
|
|
|
|
u8 nvic_get_active_irq(u8 irqn)
|
|
{
|
|
return NVIC_IABR(irqn / 32) & (1 << (irqn % 32)) ? 1 : 0;
|
|
}
|
|
|
|
u8 nvic_get_irq_enabled(u8 irqn)
|
|
{
|
|
return NVIC_ISER(irqn / 32) & (1 << (irqn % 32)) ? 1 : 0;
|
|
}
|
|
|
|
void nvic_set_priority(u8 irqn, u8 priority)
|
|
{
|
|
NVIC_IPR(irqn / 4) |= (priority << ((irqn % 4) * 8));
|
|
}
|
|
|
|
void nvic_generate_software_interrupt(u8 irqn)
|
|
{
|
|
if (irqn <= 239)
|
|
NVIC_STIR |= irqn;
|
|
}
|