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/*
ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file SAMA5D2x/aic.c
* @brief SAMA AIC support code.
*
* @addtogroup COMMON_SAMA5D2x_AIC
* @{
*/
#include "hal.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief AIC Initialization.
* @note Better reset everything in the AIC.
*
* @notapi
*/
void aicInit(void) {
Aic *aic = SAIC;
unsigned i;
/* Disable all interrupts */
for (i = 1; i < ID_PERIPH_COUNT; i++) {
aic->AIC_SSR = i;
aic->AIC_IDCR = AIC_IDCR_INTD;
}
/* Clear All pending interrupts flags */
for (i = 0; i < ID_PERIPH_COUNT; i++) {
aic->AIC_SSR = i;
aic->AIC_ICCR = AIC_ICCR_INTCLR;
}
}
/**
* @brief Configures an interrupt in the AIC.
*
* @param[in] source interrupt source to configure
* @param[in] prior priority level of the source selected
* by INTSEL except FIQ source (source 0).
*/
void aicConfigureInt(uint32_t source, uint8_t prior) {
Aic *aic = SAIC;
/* Disable write protection */
aicDisableWP(aic);
/* Set source id */
aic->AIC_SSR = source;
/* Disable the interrupt first */
aic->AIC_IDCR = AIC_IDCR_INTD;
/* Configure priority */
aic->AIC_SMR = AIC_SMR_PRIOR(prior);
/* Clear interrupt */
aic->AIC_ICCR = AIC_ICCR_INTCLR;
/* Enable write protection */
aicEnableWP(aic);
}
/**
* @brief Sets the source vector of an interrupt.
*
* @param[in] source interrupt source to configure
* @param[in] handler handler for the interrupt source selected
*/
void aicSetSourceVector(uint32_t source, bool (*handler)(void)) {
Aic *aic = SAIC;
/* Disable write protection */
aicDisableWP(aic);
/* Select source and assign handler */
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_SVR = (uint32_t)handler;
/* Enable write protection */
aicEnableWP(aic);
}
/**
* @brief Sets the spurious vector of an interrupt.
*
* @param[in] handler handler for the interrupt
*/
void aicSetSpuriousVector(bool (*handler)(void)) {
Aic *aic = SAIC;
/* Disable write protection */
aicDisableWP(aic);
/* Assign handler */
aic->AIC_SPU = (uint32_t)handler;
/* Enable write protection */
aicEnableWP(aic);
}
/**
* @brief Enables interrupts coming from the source.
*
* @param[in] source interrupt source to enable
*/
void aicEnableInt(uint32_t source) {
Aic *aic = SAIC;
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_IECR = AIC_IECR_INTEN;
}
/**
* @brief Disables interrupts coming from the selected source.
*
* @param[in] source interrupt source to disable
*/
void aicDisableInt(uint32_t source) {
Aic *aic = SAIC;
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_IDCR = AIC_IDCR_INTD;
}
/**
* @brief Clears interrupts coming from the selected source.
*
* @param[in] source interrupt source to Clear
*/
void aicClearInt(uint32_t source) {
Aic *aic = SAIC;
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_ICCR = AIC_ICCR_INTCLR;
}
/**
* @brief Sets interrupts coming from the selected source.
*
* @param[in] source interrupt source to Set
*/
void aicSetInt(uint32_t source) {
Aic *aic = SAIC;
aic->AIC_SSR = AIC_SSR_INTSEL(source);
aic->AIC_ISCR = AIC_ISCR_INTSET;
}
/** @} */
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