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LPC8xx EXT driver 

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@5436 35acf78f-673a-0410-8e92-d51de3d6d3f4
This commit is contained in:
theShed 2013-03-15 21:57:43 +00:00
parent b3b08c8230
commit f0b4615ece
8 changed files with 665 additions and 4 deletions
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2
boards/EA_LPCXPRESSO_LPC812/board.h
View File

@ -95,7 +95,7 @@
#define VAL_PIO0_17 PIN_MODE_NOPULL
/* UART0: TXD = P0.4, RXD = P0.0)*/
#define VAL_PINASSIGN0 ((0xFFFF<<16) | (0<<8) | (4))
#define VAL_PINASSIGN0 ((0xFFFF0000) | (0<<8) | (4))
/*#define VAL_PINASSIGN1 0xFFFFFFFF*/
/*#define VAL_PINASSIGN2 0xFFFFFFFF*/
/*#define VAL_PINASSIGN3 0xFFFFFFFF*/

2
os/hal/platforms/LPC8xx/LPC8xx.h
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@ -89,7 +89,7 @@ typedef enum IRQn
Reserved9_IRQn = 21, /*!< Reserved Interrupt */
Reserved10_IRQn = 22, /*!< Reserved Interrupt */
Reserved11_IRQn = 23, /*!< Reserved Interrupt */
PININT0_IRQn = 24, /*!< External Interrupt 0 */
PININT0_IRQn = 24, /*!< External Interrupt 0 */
PININT1_IRQn = 25, /*!< External Interrupt 1 */
PININT2_IRQn = 26, /*!< External Interrupt 2 */
PININT3_IRQn = 27, /*!< External Interrupt 3 */

172
os/hal/platforms/LPC8xx/ext_lld.c Normal file
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@ -0,0 +1,172 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 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 LPC8xx/ext_lld.c
* @brief LPC8xx EXT subsystem low level driver source.
*
* @addtogroup EXT
* @{
*/
#include "ch.h"
#include "hal.h"
#if HAL_USE_EXT || defined(__DOXYGEN__)
#include "ext_lld_isr.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/**
* @brief EXTD1 driver identifier.
*/
EXTDriver EXTD1;
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @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) {
int i;
LPC_SYSCON->SYSAHBCLKCTRL |= (1<<6);
/* Configuration of automatic channels.*/
for (i = 0; i < EXT_MAX_CHANNELS; i++)
if (extp->config->channels[i].mode & EXT_CH_MODE_AUTOSTART)
ext_lld_channel_enable(extp, i);
else
ext_lld_channel_disable(extp, i);
}
/**
* @brief Deactivates the EXT peripheral.
*
* @param[in] extp pointer to the @p EXTDriver object
*
* @notapi
*/
void ext_lld_stop(EXTDriver *extp) {
int i;
if (extp->state == EXT_ACTIVE)
for (i = 0; i < EXT_MAX_CHANNELS; i++)
ext_lld_exti_irq_disable(i);
LPC_PIN_INT->ISEL = 0;
LPC_PIN_INT->CIENR = EXT_CHANNELS_MASK;
LPC_PIN_INT->RISE = EXT_CHANNELS_MASK;
LPC_PIN_INT->FALL = EXT_CHANNELS_MASK;
LPC_PIN_INT->IST = EXT_CHANNELS_MASK;
/* Leave clock enabled, its shared with GPIO */
/*LPC_SYSCON->SYSAHBCLKCTRL &= ~(1<<6);*/
}
/**
* @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) {
/* program the IOpin for this channel */
LPC_SYSCON->PINTSEL[channel] = extp->config->channels[channel].iopin;
/* Programming edge irq enables */
if (extp->config->channels[channel].mode & EXT_CH_MODE_RISING_EDGE)
LPC_PIN_INT->SIENR = (1 << channel);
else
LPC_PIN_INT->CIENR = (1 << channel);
if (extp->config->channels[channel].mode & EXT_CH_MODE_FALLING_EDGE)
LPC_PIN_INT->SIENF = (1 << channel);
else
LPC_PIN_INT->CIENF = (1 << channel);
LPC_PIN_INT->RISE = (1<<channel);
LPC_PIN_INT->FALL = (1<<channel);
LPC_PIN_INT->IST = (1<<channel);
ext_lld_exti_irq_enable( channel );
}
/**
* @brief Disables an EXT channel.
*
* @param[in] extp pointer to the @p EXTDriver object
* @param[in] channel channel to be disabled
*
* @notapi
*/
void ext_lld_channel_disable(EXTDriver *extp, expchannel_t channel) {
(void)extp;
ext_lld_exti_irq_disable(channel);
LPC_PIN_INT->ISEL &= ~(1 << channel);
LPC_PIN_INT->CIENR = (1 << channel);
LPC_PIN_INT->RISE = (1 << channel);
LPC_PIN_INT->FALL = (1 << channel);
LPC_PIN_INT->IST = (1 << channel);
}
#endif /* HAL_USE_EXT */
/** @} */

156
os/hal/platforms/LPC8xx/ext_lld.h Normal file
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@ -0,0 +1,156 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 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 LPC8xx/ext_lld.h
* @brief LPC8xx EXT subsystem low level driver header.
*
* @addtogroup EXT
* @{
*/
#ifndef _EXT_LLD_H_
#define _EXT_LLD_H_
#if HAL_USE_EXT || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/**
* @brief Available number of EXT channels.
*/
#define EXT_MAX_CHANNELS 8
/**
* @brief Mask of the available channels.
*/
#define EXT_CHANNELS_MASK ((1 << EXT_MAX_CHANNELS) - 1)
/** @} */
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief EXT channel identifier.
*/
typedef uint32_t expchannel_t;
/**
* @brief EXT channel callback reason.
*/
typedef uint32_t expreason_t;
/**
* @brief Type of an EXT generic notification callback.
*
* @param[in] extp pointer to the @p EXPDriver object triggering the
* callback
*/
typedef void (*extcallback_t)(EXTDriver *extp,
expchannel_t channel,
expreason_t reason);
/**
* @brief Channel configuration structure.
*/
typedef struct {
/**
* @brief Channel mode.
*/
uint8_t mode;
/**
* @brief IO Pin.
*/
uint8_t iopin;
/**
* @brief Channel callback.
*/
extcallback_t cb;
} EXTChannelConfig;
/**
* @brief Driver configuration structure.
* @note It could be empty on some architectures.
*/
typedef struct {
/**
* @brief Channel configurations.
*/
EXTChannelConfig channels[EXT_MAX_CHANNELS];
/* End of the mandatory fields.*/
} EXTConfig;
/**
* @brief Structure representing an EXT driver.
*/
struct EXTDriver {
/**
* @brief Driver state.
*/
extstate_t state;
/**
* @brief Current configuration data.
*/
const EXTConfig *config;
/* End of the mandatory fields.*/
};
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#if !defined(__DOXYGEN__)
extern EXTDriver EXTD1;
#endif
#ifdef __cplusplus
extern "C" {
#endif
void ext_lld_init(void);
void ext_lld_start(EXTDriver *extp);
void ext_lld_stop(EXTDriver *extp);
void ext_lld_channel_enable(EXTDriver *extp, expchannel_t channel);
void ext_lld_channel_disable(EXTDriver *extp, expchannel_t channel);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_EXT */
#endif /* _EXT_LLD_H_ */
/** @} */

198
os/hal/platforms/LPC8xx/ext_lld_isr.c Normal file
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@ -0,0 +1,198 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 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 LPC8xx/ext_lld_isr.c
* @brief LPC8xx EXT subsystem low level driver ISR code.
*
* @addtogroup EXT
* @{
*/
#include "ch.h"
#include "hal.h"
#if HAL_USE_EXT || defined(__DOXYGEN__)
#include "ext_lld_isr.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
static void ext_lld_interrupt( uint32_t n ) {
uint32_t reason;
reason = ((LPC_PIN_INT->RISE)>> n ) & 0x01;
reason |= ((LPC_PIN_INT->FALL)>>(n-1)) & 0x02;
LPC_PIN_INT->RISE = (1<<n);
LPC_PIN_INT->FALL = (1<<n);
LPC_PIN_INT->IST = (1<<n);
EXTD1.config->channels[n].cb(&EXTD1, n, reason);
}
/**
* @brief EXT[0] interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(VectorA0) {
CH_IRQ_PROLOGUE();
ext_lld_interrupt(0);
CH_IRQ_EPILOGUE();
}
/**
* @brief EXT[1] interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(VectorA4) {
CH_IRQ_PROLOGUE();
ext_lld_interrupt(1);
CH_IRQ_EPILOGUE();
}
/**
* @brief EXT[2] interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(VectorA8) {
CH_IRQ_PROLOGUE();
ext_lld_interrupt(2);
CH_IRQ_EPILOGUE();
}
/**
* @brief EXT[3] interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(VectorAC) {
CH_IRQ_PROLOGUE();
ext_lld_interrupt(3);
CH_IRQ_EPILOGUE();
}
/**
* @brief EXT[4] interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(VectorB0) {
CH_IRQ_PROLOGUE();
ext_lld_interrupt(4);
CH_IRQ_EPILOGUE();
}
/**
* @brief EXT[5] interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(VectorB4) {
CH_IRQ_PROLOGUE();
ext_lld_interrupt(5);
CH_IRQ_EPILOGUE();
}
/**
* @brief EXT[6] interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(VectorB8) {
CH_IRQ_PROLOGUE();
ext_lld_interrupt(6);
CH_IRQ_EPILOGUE();
}
/**
* @brief EXT[7] interrupt handler.
*
* @isr
*/
CH_IRQ_HANDLER(VectorBC) {
CH_IRQ_PROLOGUE();
ext_lld_interrupt(7);
CH_IRQ_EPILOGUE();
}
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
static const uint8_t LPC8xx_EXT_EXTIn_IRQ_PRIORITY[] =
{ LPC8xx_EXT_EXTI0_IRQ_PRIORITY,
LPC8xx_EXT_EXTI1_IRQ_PRIORITY,
LPC8xx_EXT_EXTI2_IRQ_PRIORITY,
LPC8xx_EXT_EXTI3_IRQ_PRIORITY,
LPC8xx_EXT_EXTI4_IRQ_PRIORITY,
LPC8xx_EXT_EXTI5_IRQ_PRIORITY,
LPC8xx_EXT_EXTI6_IRQ_PRIORITY,
LPC8xx_EXT_EXTI7_IRQ_PRIORITY };
/**
* @brief Enables EXTI IRQ sources.
*
* @notapi
*/
void ext_lld_exti_irq_enable( uint32_t exti_n ) {
nvicEnableVector(PININT0_IRQn + exti_n,
CORTEX_PRIORITY_MASK(LPC8xx_EXT_EXTIn_IRQ_PRIORITY[exti_n]));
}
/**
* @brief Disables EXTI IRQ sources.
*
* @notapi
*/
void ext_lld_exti_irq_disable( uint32_t exti_n ) {
nvicDisableVector(PININT0_IRQn + exti_n);
}
#endif /* HAL_USE_EXT */
/** @} */

133
os/hal/platforms/LPC8xx/ext_lld_isr.h Normal file
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@ -0,0 +1,133 @@
/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012,2013 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 LPC8xx/ext_lld_isr.h
* @brief LPC8xx EXT subsystem low level driver ISR header.
*
* @addtogroup EXT
* @{
*/
#ifndef _EXT_LLD_ISR_H_
#define _EXT_LLD_ISR_H_
#if HAL_USE_EXT || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name Configuration options
* @{
*/
/**
* @brief EXTI0 interrupt priority level setting.
*/
#if !defined(LPC8xx_EXT_EXTI0_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define LPC8xx_EXT_EXTI0_IRQ_PRIORITY 3
#endif
/**
* @brief EXTI1 interrupt priority level setting.
*/
#if !defined(LPC8xx_EXT_EXTI1_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define LPC8xx_EXT_EXTI1_IRQ_PRIORITY 3
#endif
/**
* @brief EXTI2 interrupt priority level setting.
*/
#if !defined(LPC8xx_EXT_EXTI2_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define LPC8xx_EXT_EXTI2_IRQ_PRIORITY 3
#endif
/**
* @brief EXTI3 interrupt priority level setting.
*/
#if !defined(LPC8xx_EXT_EXTI3_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define LPC8xx_EXT_EXTI3_IRQ_PRIORITY 3
#endif
/**
* @brief EXTI4 interrupt priority level setting.
*/
#if !defined(LPC8xx_EXT_EXTI4_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define LPC8xx_EXT_EXTI4_IRQ_PRIORITY 3
#endif
/**
* @brief EXTI5 interrupt priority level setting.
*/
#if !defined(LPC8xx_EXT_EXTI5_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define LPC8xx_EXT_EXTI5_IRQ_PRIORITY 3
#endif
/**
* @brief EXTI6 interrupt priority level setting.
*/
#if !defined(LPC8xx_EXT_EXTI6_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define LPC8xx_EXT_EXTI6_IRQ_PRIORITY 3
#endif
/**
* @brief EXTI7 interrupt priority level setting.
*/
#if !defined(LPC8xx_EXT_EXTI7_IRQ_PRIORITY) || defined(__DOXYGEN__)
#define LPC8xx_EXT_EXTI7_IRQ_PRIORITY 3
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void ext_lld_exti_irq_enable( uint32_t exti_n );
void ext_lld_exti_irq_disable( uint32_t exti_n );
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_EXT */
#endif /* _EXT_LLD_ISR_H_ */
/** @} */

2
os/hal/platforms/LPC8xx/pal_lld.c
View File

@ -54,7 +54,7 @@
* @brief LPC8xx I/O ports configuration.
* @details GPIO unit registers initialization.
*
* @param[in] config the LPC11xx ports configuration
* @param[in] config the LPC8xx ports configuration
*
* @notapi
*/

4
os/hal/platforms/LPC8xx/platform.mk
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@ -2,7 +2,9 @@
PLATFORMSRC = ${CHIBIOS}/os/hal/platforms/LPC8xx/hal_lld.c \
${CHIBIOS}/os/hal/platforms/LPC8xx/gpt_lld.c \
${CHIBIOS}/os/hal/platforms/LPC8xx/pal_lld.c \
${CHIBIOS}/os/hal/platforms/LPC8xx/serial_lld.c
${CHIBIOS}/os/hal/platforms/LPC8xx/serial_lld.c \
${CHIBIOS}/os/hal/platforms/LPC8xx/ext_lld.c \
${CHIBIOS}/os/hal/platforms/LPC8xx/ext_lld_isr.c
# Required include directories
PLATFORMINC = ${CHIBIOS}/os/hal/platforms/LPC8xx