andreika-git
/
ChibiOS
mirror of https://github.com/andreika-git/ChibiOS.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
ChibiOS/os/hal/ports/AVR/hal_ext_lld.c

393 lines
10 KiB
C
Raw Permalink Blame History

/*
ChibiOS - Copyright (C) 2016 Theodore Ateba
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 hal_ext_lld.c
* @brief AVR EXT subsystem low level driver source.
*
* @addtogroup EXT
* @{
*/
#include "hal.h"
#if HAL_USE_EXT || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/**
* @brief EXTD1 driver identifier.
*/
EXTDriver EXTD1;
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/**
* @brief Set the INTx interrupt trigger front or state.
*
* @param[in] channel the channel to configure
* @param[in] edge the front or state to configure
*/
void ext_lld_set_intx_edges(expchannel_t channel, uint8_t edge) {
#if AVR_EXT_USE_INT0 || defined(__DOXYGEN__)
if (channel == INT0) {
if (edge == EXT_CH_MODE_RISING_EDGE) {
EICRA |= (1 << 0);
EICRA |= (1 << 1);
}
else if (edge == EXT_CH_MODE_FALLING_EDGE) {
EICRA &= ~(1 << 0);
EICRA |= (1 << 1);
}
else if (edge == EXT_CH_MODE_BOTH_EDGES) {
EICRA |= (1 << 0);
EICRA &= ~(1 << 1);
}
else if (edge == EXT_CH_MODE_LOW_LEVEL) {
EICRA &= ~(1 << 0);
EICRA &= ~(1 << 1);
}
}
#endif
#if AVR_EXT_USE_INT1 || defined(__DOXYGEN__)
if (channel == INT1) {
if (edge == EXT_CH_MODE_RISING_EDGE) {
EICRA |= (1 << 2);
EICRA |= (1 << 3);
}
else if (edge == EXT_CH_MODE_FALLING_EDGE) {
EICRA &= ~(1 << 2);
EICRA |= (1 << 3);
}
else if (edge == EXT_CH_MODE_BOTH_EDGES) {
EICRA |= (1 << 2);
EICRA &= ~(1 << 3);
}
else if (edge == EXT_CH_MODE_LOW_LEVEL) {
EICRA &= ~(1 << 2);
EICRA &= ~(1 << 3);
}
}
#endif
#if AVR_EXT_USE_INT2 || defined(__DOXYGEN__)
if (channel == INT2) {
if (edge == EXT_CH_MODE_RISING_EDGE) {
EICRA |= (1 << 4);
EICRA |= (1 << 5);
}
else if (edge == EXT_CH_MODE_FALLING_EDGE) {
EICRA &= ~(1 << 4);
EICRA |= (1 << 5);
}
else if (edge == EXT_CH_MODE_BOTH_EDGES) {
EICRA |= (1 << 4);
EICRA &= ~(1 << 5);
}
else if (edge == EXT_CH_MODE_LOW_LEVEL) {
EICRA &= ~(1 << 4);
EICRA &= ~(1 << 5);
}
}
#endif
#if AVR_EXT_USE_INT3 || defined(__DOXYGEN__)
if (channel == INT3) {
if (edge == EXT_CH_MODE_RISING_EDGE) {
EICRA |= (1 << 6);
EICRA |= (1 << 7);
}
else if (edge == EXT_CH_MODE_FALLING_EDGE) {
EICRA &= ~(1 << 6);
EICRA |= (1 << 7);
}
else if (edge == EXT_CH_MODE_BOTH_EDGES) {
EICRA |= (1 << 6);
EICRA &= ~(1 << 7);
}
else if (edge == EXT_CH_MODE_LOW_LEVEL) {
EICRA &= ~(1 << 6);
EICRA &= ~(1 << 7);
}
}
#endif
#if AVR_EXT_USE_INT4 || defined(__DOXYGEN__)
if (channel == INT4) {
if (edge == EXT_CH_MODE_RISING_EDGE) {
EICRB |= (1 << 0);
EICRB |= (1 << 1);
}
else if (edge == EXT_CH_MODE_FALLING_EDGE) {
EICRB &= ~(1 << 0);
EICRB |= (1 << 1);
}
else if (edge == EXT_CH_MODE_BOTH_EDGES) {
EICRB |= (1 << 0);
EICRB &= ~(1 << 1);
}
else if (edge == EXT_CH_MODE_LOW_LEVEL) {
EICRB &= ~(1 << 0);
EICRB &= ~(1 << 1);
}
}
#endif
#if AVR_EXT_USE_INT5 || defined(__DOXYGEN__)
if (channel == INT5) {
if (edge == EXT_CH_MODE_RISING_EDGE) {
EICRB |= (1 << 2);
EICRB |= (1 << 3);
}
else if (edge == EXT_CH_MODE_FALLING_EDGE) {
EICRB &= ~(1 << 2);
EICRB |= (1 << 3);
}
else if (edge == EXT_CH_MODE_BOTH_EDGES) {
EICRB |= (1 << 2);
EICRB &= ~(1 << 3);
}
else if (edge == EXT_CH_MODE_LOW_LEVEL) {
EICRB &= ~(1 << 2);
EICRB &= ~(1 << 3);
}
}
#endif
}
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
#if AVR_EXT_USE_INT0 || defined(__DOXYGEN__)
/**
* @brief EXTI[INT0] interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(INT0_vect) {
OSAL_IRQ_PROLOGUE();
EXTD1.config->channels[INT0].cb(&EXTD1, INT0);
OSAL_IRQ_EPILOGUE();
}
#endif
#if AVR_EXT_USE_INT1 || defined(__DOXYGEN__)
/**
* @brief EXTI[INT1] interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(INT1_vect) {
OSAL_IRQ_PROLOGUE();
EXTD1.config->channels[INT1].cb(&EXTD1, INT1);
OSAL_IRQ_EPILOGUE();
}
#endif
#if AVR_EXT_USE_INT2 || defined(__DOXYGEN__)
/**
* @brief EXTI[INT2] interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(INT2_vect) {
OSAL_IRQ_PROLOGUE();
EXTD1.config->channels[INT2].cb(&EXTD1, INT2);
OSAL_IRQ_EPILOGUE();
}
#endif
#if AVR_EXT_USE_INT3 || defined(__DOXYGEN__)
/**
* @brief EXTI[INT3] interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(INT3_vect) {
OSAL_IRQ_PROLOGUE();
EXTD1.config->channels[INT3].cb(&EXTD1, INT3);
OSAL_IRQ_EPILOGUE();
}
#endif
#if AVR_EXT_USE_INT4 || defined(__DOXYGEN__)
/**
* @brief EXTI[INT4] interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(INT4_vect) {
OSAL_IRQ_PROLOGUE();
EXTD1.config->channels[INT4].cb(&EXTD1, INT4);
OSAL_IRQ_EPILOGUE();
}
#endif
#if AVR_EXT_USE_INT5 || defined(__DOXYGEN__)
/**
* @brief EXTI[INT5] interrupt handler.
*
* @isr
*/
OSAL_IRQ_HANDLER(INT5_vect) {
OSAL_IRQ_PROLOGUE();
EXTD1.config->channels[INT5].cb(&EXTD1, INT5);
OSAL_IRQ_EPILOGUE();
}
#endif
/*===========================================================================*/
/* Driver functions. */
/*===========================================================================*/
/**
* @brief Enables an EXT channel.
*
* @param[in] extp pointer to the @p EXTDriver object
* @param[in] channel channel to be enabled
*
* @notapi
*/
void ext_lld_channel_enable(EXTDriver *extp, expchannel_t channel) {
#if AVR_EXT_USE_INT0 || defined(__DOXYGEN__)
if (channel == INT0) {
EIMSK |= 1 << INT0;
ext_lld_set_intx_edges(channel, extp->config->channels[channel].mode);
}
#endif
#if AVR_EXT_USE_INT1 || defined(__DOXYGEN__)
if (channel == INT1) {
EIMSK |= 1 << INT1;
ext_lld_set_intx_edges(channel, extp->config->channels[channel].mode);
}
#endif
#if AVR_EXT_USE_INT2 || defined(__DOXYGEN__)
if (channel == INT2) {
EIMSK |= 1 << INT2;
ext_lld_set_intx_edges(channel, extp->config->channels[channel].mode);
}
#endif
#if AVR_EXT_USE_INT3 || defined(__DOXYGEN__)
if (channel == INT3) {
EIMSK |= 1 << INT3;
ext_lld_set_intx_edges(channel, extp->config->channels[channel].mode);
}
#endif
#if AVR_EXT_USE_INT4 || defined(__DOXYGEN__)
if (channel == INT4) {
EIMSK |= 1 << INT4;
ext_lld_set_intx_edges(channel, extp->config->channels[channel].mode);
}
#endif
#if AVR_EXT_USE_INT5 || defined(__DOXYGEN__)
if (channel == INT5) {
EIMSK |= 1 << INT5;
ext_lld_set_intx_edges(channel, extp->config->channels[channel].mode);
}
#endif
}
/**
* @brief Disables an EXT channel.
*
* @param[in] extp pinter to the @p EXTDriver object
* @param[in] channel channel to be disabled
*
* @notapi
*/
void ext_lld_channel_disable(EXTDriver *extp, expchannel_t channel) {
#if AVR_EXT_USE_INT0 || defined(__DOXYGEN__)
if (channel == INT0)
EIMSK &= ~(1 << INT0);
#endif
#if AVR_EXT_USE_INT1 || defined(__DOXYGEN__)
if (channel == INT1)
EIMSK &= ~(1 << INT1);
#endif
#if AVR_EXT_USE_INT2 || defined(__DOXYGEN__)
if (channel == INT2)
EIMSK &= ~(1 << INT2);
#endif
#if AVR_EXT_USE_INT3 || defined(__DOXYGEN__)
if (channel == INT3)
EIMSK &= ~(1 << INT3);
#endif
#if AVR_EXT_USE_INT4 || defined(__DOXYGEN__)
if (channel == INT4)
EIMSK &= ~(1 << INT4);
#endif
#if AVR_EXT_USE_INT5 || defined(__DOXYGEN__)
if (channel == INT5)
EIMSK &= ~(1 << INT5);
#endif
}
/**
* @brief Low level EXT driver initialization.
*
* @notapi
*/
void ext_lld_init(void) {
/* Driver initialization.*/
extObjectInit(&EXTD1);
}
/**
* @brief Configures and activates the EXT peripheral.
*
* @param[in] extp pointer to the @p EXTDriver object
*
* @notapi
*/
void ext_lld_start(EXTDriver *extp) {
expchannel_t line;
if (extp->state == EXT_STOP)
osalSysUnlock();
/* Configuration of automatic channels. */
for (line = 0; line < EXT_MAX_CHANNELS; line++) {
if (extp->config->channels[line].mode & EXT_CH_MODE_AUTOSTART)
ext_lld_channel_enable(extp, line);
else
ext_lld_channel_disable(extp, line);
}
}
/**
* @brief Deactivates the EXT peripheral.
*
* @param[in] extp pointer to the @p EXTDriver object
*
* @notapi
*/
void ext_lld_stop(EXTDriver *extp) {
if (extp->state == EXT_ACTIVE)
osalSysLock();
}
#endif /* HAL_USE_EXT */
/** @} */
Reference in New Issue View Git Blame Copy Permalink