329 lines
8.9 KiB
C
329 lines
8.9 KiB
C
/*
|
|
ChibiOS - Copyright (C) 2015 Fabio Utzig
|
|
2016 Stephane D'Alu
|
|
|
|
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 TIMERv1/hal_st_lld.c
|
|
* @brief NRF5 ST subsystem low level driver source.
|
|
*
|
|
* @addtogroup ST
|
|
* @{
|
|
*/
|
|
|
|
#include "hal.h"
|
|
|
|
#if (OSAL_ST_MODE != OSAL_ST_MODE_NONE) || defined(__DOXYGEN__)
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local definitions. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local types. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local variables and types. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local functions. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver interrupt handlers. */
|
|
/*===========================================================================*/
|
|
|
|
#if (OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC) || defined(__DOXYGEN__)
|
|
#if NRF5_ST_USE_RTC0 == TRUE
|
|
/**
|
|
* @brief System Timer vector (RTC0)
|
|
* @details This interrupt is used for system tick in periodic mode
|
|
* if selected with NRF5_ST_USE_RTC0
|
|
*
|
|
* @isr
|
|
*/
|
|
OSAL_IRQ_HANDLER(Vector6C) {
|
|
|
|
OSAL_IRQ_PROLOGUE();
|
|
|
|
NRF_RTC0->EVENTS_TICK = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC0->EVENTS_TICK;
|
|
#endif
|
|
|
|
osalSysLockFromISR();
|
|
osalOsTimerHandlerI();
|
|
osalSysUnlockFromISR();
|
|
|
|
OSAL_IRQ_EPILOGUE();
|
|
}
|
|
#endif
|
|
|
|
#if NRF5_ST_USE_RTC1 == TRUE
|
|
/**
|
|
* @brief System Timer vector (RTC1)
|
|
* @details This interrupt is used for system tick in periodic mode
|
|
* if selected with NRF5_ST_USE_RTC1
|
|
*
|
|
* @isr
|
|
*/
|
|
OSAL_IRQ_HANDLER(Vector84) {
|
|
|
|
OSAL_IRQ_PROLOGUE();
|
|
|
|
NRF_RTC1->EVENTS_TICK = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC1->EVENTS_TICK;
|
|
#endif
|
|
|
|
osalSysLockFromISR();
|
|
osalOsTimerHandlerI();
|
|
osalSysUnlockFromISR();
|
|
|
|
OSAL_IRQ_EPILOGUE();
|
|
}
|
|
#endif
|
|
|
|
#if NRF5_ST_USE_TIMER0 == TRUE
|
|
/**
|
|
* @brief System Timer vector. (TIMER0)
|
|
* @details This interrupt is used for system tick in periodic mode
|
|
* if selected with NRF5_ST_USE_TIMER0
|
|
*
|
|
* @isr
|
|
*/
|
|
OSAL_IRQ_HANDLER(Vector60) {
|
|
|
|
OSAL_IRQ_PROLOGUE();
|
|
|
|
/* Clear timer compare event */
|
|
if (NRF_TIMER0->EVENTS_COMPARE[0] != 0) {
|
|
NRF_TIMER0->EVENTS_COMPARE[0] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_TIMER0->EVENTS_COMPARE[0];
|
|
#endif
|
|
|
|
osalSysLockFromISR();
|
|
osalOsTimerHandlerI();
|
|
osalSysUnlockFromISR();
|
|
}
|
|
|
|
OSAL_IRQ_EPILOGUE();
|
|
}
|
|
#endif
|
|
#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */
|
|
|
|
#if (OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING) || defined(__DOXYGEN__)
|
|
#if NRF5_ST_USE_RTC0 == TRUE
|
|
/**
|
|
* @brief System Timer vector (RTC0)
|
|
* @details This interrupt is used for freerunning mode (tick-less)
|
|
* if selected with NRF5_ST_USE_RTC0
|
|
*
|
|
* @isr
|
|
*/
|
|
OSAL_IRQ_HANDLER(Vector6C) {
|
|
|
|
OSAL_IRQ_PROLOGUE();
|
|
|
|
if (NRF_RTC0->EVENTS_COMPARE[0]) {
|
|
NRF_RTC0->EVENTS_COMPARE[0] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC0->EVENTS_COMPARE[0];
|
|
#endif
|
|
|
|
osalSysLockFromISR();
|
|
osalOsTimerHandlerI();
|
|
osalSysUnlockFromISR();
|
|
}
|
|
|
|
#if OSAL_ST_RESOLUTION == 16
|
|
if (NRF_RTC0->EVENTS_COMPARE[1]) {
|
|
NRF_RTC0->EVENTS_COMPARE[1] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC0->EVENTS_COMPARE[1];
|
|
#endif
|
|
NRF_RTC0->TASKS_CLEAR = 1;
|
|
}
|
|
#endif
|
|
|
|
OSAL_IRQ_EPILOGUE();
|
|
}
|
|
#endif
|
|
|
|
#if NRF5_ST_USE_RTC1 == TRUE
|
|
/**
|
|
* @brief System Timer vector (RTC1)
|
|
* @details This interrupt is used for freerunning mode (tick-less)
|
|
* if selected with NRF5_ST_USE_RTC1
|
|
*
|
|
* @isr
|
|
*/
|
|
OSAL_IRQ_HANDLER(Vector84) {
|
|
|
|
OSAL_IRQ_PROLOGUE();
|
|
|
|
if (NRF_RTC1->EVENTS_COMPARE[0]) {
|
|
NRF_RTC1->EVENTS_COMPARE[0] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC1->EVENTS_COMPARE[0];
|
|
#endif
|
|
|
|
osalSysLockFromISR();
|
|
osalOsTimerHandlerI();
|
|
osalSysUnlockFromISR();
|
|
}
|
|
|
|
#if OSAL_ST_RESOLUTION == 16
|
|
if (NRF_RTC1->EVENTS_COMPARE[1]) {
|
|
NRF_RTC1->EVENTS_COMPARE[1] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC1->EVENTS_COMPARE[1];
|
|
#endif
|
|
NRF_RTC1->TASKS_CLEAR = 1;
|
|
}
|
|
#endif
|
|
|
|
OSAL_IRQ_EPILOGUE();
|
|
}
|
|
#endif
|
|
#endif /* OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING */
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported functions. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief Low level ST driver initialization.
|
|
*
|
|
* @notapi
|
|
*/
|
|
void st_lld_init(void) {
|
|
#if OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING
|
|
|
|
#if NRF5_ST_USE_RTC0 == TRUE
|
|
/* Using RTC with prescaler */
|
|
NRF_RTC0->TASKS_STOP = 1;
|
|
NRF_RTC0->PRESCALER = (NRF5_LFCLK_FREQUENCY / OSAL_ST_FREQUENCY) - 1;
|
|
NRF_RTC0->EVTENCLR = RTC_EVTENSET_COMPARE0_Msk;
|
|
NRF_RTC0->EVENTS_COMPARE[0] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC0->EVENTS_COMPARE[0];
|
|
#endif
|
|
NRF_RTC0->INTENSET = RTC_INTENSET_COMPARE0_Msk;
|
|
#if OSAL_ST_RESOLUTION == 16
|
|
NRF_RTC0->CC[1] = 0x10000; /* 2^16 */
|
|
NRF_RTC0->EVENTS_COMPARE[1] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC0->EVENTS_COMPARE[1];
|
|
#endif
|
|
NRF_RTC0->EVTENSET = RTC_EVTENSET_COMPARE0_Msk;
|
|
NRF_RTC0->INTENSET = RTC_INTENSET_COMPARE1_Msk;
|
|
#endif
|
|
NRF_RTC0->TASKS_CLEAR = 1;
|
|
|
|
/* Start timer */
|
|
nvicEnableVector(RTC0_IRQn, NRF5_ST_PRIORITY);
|
|
NRF_RTC0->TASKS_START = 1;
|
|
#endif /* NRF5_ST_USE_RTC0 == TRUE */
|
|
|
|
#if NRF5_ST_USE_RTC1 == TRUE
|
|
/* Using RTC with prescaler */
|
|
NRF_RTC1->TASKS_STOP = 1;
|
|
NRF_RTC1->PRESCALER = (NRF5_LFCLK_FREQUENCY / OSAL_ST_FREQUENCY) - 1;
|
|
NRF_RTC1->EVTENCLR = RTC_EVTENSET_COMPARE0_Msk;
|
|
NRF_RTC1->EVENTS_COMPARE[0] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
(void)NRF_RTC1->EVENTS_COMPARE[0];
|
|
#endif
|
|
NRF_RTC1->INTENSET = RTC_INTENSET_COMPARE0_Msk;
|
|
#if OSAL_ST_RESOLUTION == 16
|
|
NRF_RTC1->CC[1] = 0x10000; /* 2^16 */
|
|
NRF_RTC1->EVENTS_COMPARE[1] = 0;
|
|
#if CORTEX_MODEL >= 4
|
|
NRF_RTC1->EVENTS_COMPARE[1];
|
|
#endif
|
|
NRF_RTC1->EVTENSET = RTC_EVTENSET_COMPARE0_Msk;
|
|
NRF_RTC1->INTENSET = RTC_INTENSET_COMPARE1_Msk;
|
|
#endif
|
|
NRF_RTC1->TASKS_CLEAR = 1;
|
|
|
|
/* Start timer */
|
|
nvicEnableVector(RTC1_IRQn, NRF5_ST_PRIORITY);
|
|
NRF_RTC1->TASKS_START = 1;
|
|
#endif /* NRF5_ST_USE_RTC1 == TRUE */
|
|
|
|
#endif /* OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING */
|
|
|
|
#if OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC
|
|
|
|
#if NRF5_ST_USE_RTC0 == TRUE
|
|
/* Using RTC with prescaler */
|
|
NRF_RTC0->TASKS_STOP = 1;
|
|
NRF_RTC0->PRESCALER = (NRF5_LFCLK_FREQUENCY / OSAL_ST_FREQUENCY) - 1;
|
|
NRF_RTC0->INTENSET = RTC_INTENSET_TICK_Msk;
|
|
|
|
/* Start timer */
|
|
nvicEnableVector(RTC0_IRQn, NRF5_ST_PRIORITY);
|
|
NRF_RTC0->TASKS_START = 1;
|
|
#endif /* NRF5_ST_USE_RTC0 == TRUE */
|
|
|
|
#if NRF5_ST_USE_RTC1 == TRUE
|
|
/* Using RTC with prescaler */
|
|
NRF_RTC1->TASKS_STOP = 1;
|
|
NRF_RTC1->PRESCALER = (NRF5_LFCLK_FREQUENCY / OSAL_ST_FREQUENCY) - 1;
|
|
NRF_RTC1->INTENSET = RTC_INTENSET_TICK_Msk;
|
|
|
|
/* Start timer */
|
|
nvicEnableVector(RTC1_IRQn, NRF5_ST_PRIORITY);
|
|
NRF_RTC1->TASKS_START = 1;
|
|
#endif /* NRF5_ST_USE_RTC1 == TRUE */
|
|
|
|
#if NRF5_ST_USE_TIMER0 == TRUE
|
|
NRF_TIMER0->TASKS_CLEAR = 1;
|
|
|
|
/*
|
|
* Using 32-bit mode with prescaler 1/16 configures this
|
|
* timer with a 1MHz clock, reducing power consumption.
|
|
*/
|
|
NRF_TIMER0->BITMODE = TIMER_BITMODE_BITMODE_32Bit;
|
|
NRF_TIMER0->PRESCALER = 4;
|
|
|
|
/*
|
|
* Configure timer 0 compare capture 0 to generate interrupt
|
|
* and clear timer value when event is generated.
|
|
*/
|
|
NRF_TIMER0->CC[0] = (1000000 / OSAL_ST_FREQUENCY) - 1;
|
|
NRF_TIMER0->SHORTS = 1;
|
|
NRF_TIMER0->INTENSET = TIMER_INTENSET_COMPARE0_Msk;
|
|
|
|
/* Start timer */
|
|
nvicEnableVector(TIMER0_IRQn, NRF5_ST_PRIORITY);
|
|
NRF_TIMER0->TASKS_START = 1;
|
|
#endif /* NRF5_ST_USE_TIMER0 == TRUE */
|
|
|
|
#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */
|
|
}
|
|
|
|
#endif /* OSAL_ST_MODE != OSAL_ST_MODE_NONE */
|
|
|
|
/** @} */
|