tinySA/os/hal/platforms/LPC214x/vic.c

62 lines
1.9 KiB
C
Raw Normal View History

/*
ChibiOS/RT - Copyright (C) 2006-2007 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/>.
*/
/**
* @file LPC214x/vic.c
* @brief LPC214x VIC peripheral support code.
* @addtogroup LPC214x_VIC
* @{
*/
#include "ch.h"
/**
* @brief VIC Initialization.
* @note Better reset everything in the VIC, it is a HUGE source of trouble.
*/
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
*/
void SetVICVector(void *handler, int vector, int source) {
VIC *vicp = VICBase;
vicp->VIC_VectAddrs[vector] = (IOREG32)handler;
vicp->VIC_VectCntls[vector] = (IOREG32)(source | 0x20);
}
/** @} */