vic.c
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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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.
ChibiOS/RT 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/>.
---
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes ChibiOS/RT, without being obliged to provide
the source code for any proprietary components. See the file exception.txt
for full details of how and when the exception can be applied.
*/
/**
* @file LPC214x/vic.c
* @brief LPC214x VIC peripheral support code.
*
* @addtogroup LPC214x_VIC
* @{
*/
#include "ch.h"
#include "hal.h"
/**
* @brief VIC Initialization.
* @note Better reset everything in the VIC, it is a HUGE source of trouble.
*
* @notapi
*/
void vic_init(void) {
int i;
VIC *vic = VICBase;
vic->VIC_IntSelect = 0; /* All sources assigned to IRQ. */
vic->VIC_SoftIntClear = ALLINTMASK; /* No interrupts enforced */
vic->VIC_IntEnClear = ALLINTMASK; /* All sources disabled. */
for (i = 0; i < 16; i++) {
vic->VIC_VectCntls[i] = 0;
vic->VIC_VectAddrs[i] = 0;
vic->VIC_VectAddr = 0;
}
}
/**
* @brief Initializes a VIC vector.
* @details Set a vector for an interrupt source and enables it.
*
* @param[in] handler the pointer to the IRQ service routine
* @param[in] vector the vector number
* @param[in] source the IRQ source to be associated to the vector
*
* @api
*/
void SetVICVector(void *handler, int vector, int source) {
VIC *vicp = VICBase;
vicp->VIC_VectAddrs[vector] = (IOREG32)handler;
vicp->VIC_VectCntls[vector] = (IOREG32)(source | 0x20);
}
/** @} */