use mcuconf.h with NRF51_SYSTEM_TICKS to select the timer source (TIMER or RTC)
This commit is contained in:
parent
80af295f27
commit
8fe62a0f90
|
@ -66,22 +66,16 @@ void hal_lld_init(void)
|
|||
NRF_CLOCK->XTALFREQ = 0x00;
|
||||
#endif
|
||||
#endif
|
||||
|
||||
|
||||
/* Low frequency clock initialisation
|
||||
* If source not specified, use the internal RC (0) which is prefered
|
||||
* over synthetized clock from the high frequency clock (2)
|
||||
* Clock is only started if st driver requires it
|
||||
*/
|
||||
#if defined(NRF51_LFCLK_SOURCE)
|
||||
#if (NRF51_LFCLK_SOURCE >=0) && (NRF51_LFCLK_SOURCE <= 2)
|
||||
NRF_CLOCK->TASKS_LFCLKSTOP = 1;
|
||||
NRF_CLOCK->LFCLKSRC = NRF51_LFCLK_SOURCE;
|
||||
#else
|
||||
#error "Possible value for NRF51_LFCLK_SOURCE are 0=RC, 1=XTAL, 2=Synth"
|
||||
#endif
|
||||
#else
|
||||
NRF_CLOCK->LFCLKSRC = 0;
|
||||
#endif
|
||||
|
||||
#if (OSAL_ST_MODE != OSAL_ST_MODE_NONE)
|
||||
#if (OSAL_ST_MODE != OSAL_ST_MODE_NONE) && \
|
||||
(NRF51_SYSTEM_TICKS == NRF51_SYSTEM_TICKS_AS_RTC)
|
||||
NRF_CLOCK->TASKS_LFCLKSTART = 1;
|
||||
#endif
|
||||
}
|
||||
|
|
|
@ -39,15 +39,35 @@
|
|||
* @}
|
||||
*/
|
||||
|
||||
/**
|
||||
* @brief Frequency valuefor the Low Frequency Clock
|
||||
*/
|
||||
#define NRF51_LFCLK_FREQUENCY 32768
|
||||
|
||||
/*===========================================================================*/
|
||||
/* Driver pre-compile time settings. */
|
||||
/*===========================================================================*/
|
||||
|
||||
/**
|
||||
* @brief Select source of Low Frequency Clock (LFCLK)
|
||||
* @details Possible values for source are:
|
||||
* 0 : RC oscillator
|
||||
* 1 : External cristal
|
||||
* 2 : Synthetized clock from High Frequency Clock (HFCLK)
|
||||
* When cristal is not available it's preferable to use the
|
||||
* internal RC oscillator that synthezing the clock.
|
||||
*/
|
||||
#if !defined(NRF51_LFCLK_SOURCE) || defined(__DOXYGEN__)
|
||||
#define NRF51_LFCLK_SOURCE 0
|
||||
#endif
|
||||
|
||||
/*===========================================================================*/
|
||||
/* Driver constants and error checks. */
|
||||
/* Derived constants and error checks. */
|
||||
/*===========================================================================*/
|
||||
|
||||
#define NRF51_LFCLK_FREQUENCY 32768
|
||||
#if (NRF51_LFCLK_SOURCE < 0) || (NRF51_LFCLK_SOURCE > 2)
|
||||
#error "Possible value for NRF51_LFCLK_SOURCE are 0=RC, 1=XTAL, 2=Synth"
|
||||
#endif
|
||||
|
||||
/*===========================================================================*/
|
||||
/* Driver data structures and types. */
|
||||
|
|
|
@ -1,5 +1,6 @@
|
|||
/*
|
||||
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.
|
||||
|
@ -51,9 +52,12 @@
|
|||
/*===========================================================================*/
|
||||
|
||||
#if (OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC) || defined(__DOXYGEN__)
|
||||
|
||||
#if (NRF51_SYSTEM_TICKS == NRF51_SYSTEM_TICKS_AS_RTC)
|
||||
/**
|
||||
* @brief System Timer vector (RTC0)
|
||||
* @details This interrupt is used for system tick in periodic mode.
|
||||
* @details This interrupt is used for system tick in periodic mode
|
||||
* if selected with NRF51_SYSTEM_TICKS == NRF51_SYSTEM_TICKS_AS_RTC
|
||||
*
|
||||
* @isr
|
||||
*/
|
||||
|
@ -69,6 +73,32 @@ OSAL_IRQ_HANDLER(Vector6C) {
|
|||
|
||||
OSAL_IRQ_EPILOGUE();
|
||||
}
|
||||
#endif
|
||||
|
||||
#if (NRF51_SYSTEM_TICKS == NRF51_SYSTEM_TICKS_AS_TIMER)
|
||||
/**
|
||||
* @brief System Timer vector. (TIMER0)
|
||||
* @details This interrupt is used for system tick in periodic mode
|
||||
* if selected with NRF51_SYSTEM_TICKS == NRF51_SYSTEM_TICKS_AS_TIMER
|
||||
*
|
||||
* @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;
|
||||
|
||||
osalSysLockFromISR();
|
||||
osalOsTimerHandlerI();
|
||||
osalSysUnlockFromISR();
|
||||
|
||||
OSAL_IRQ_EPILOGUE();
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC */
|
||||
|
||||
/*===========================================================================*/
|
||||
|
@ -86,6 +116,8 @@ void st_lld_init(void) {
|
|||
#endif /* OSAL_ST_MODE == OSAL_ST_MODE_FREERUNNING */
|
||||
|
||||
#if OSAL_ST_MODE == OSAL_ST_MODE_PERIODIC
|
||||
|
||||
#if (NRF51_SYSTEM_TICKS == NRF51_SYSTEM_TICKS_AS_RTC)
|
||||
/* Using RTC with prescaler */
|
||||
NRF_RTC0->TASKS_STOP = 1;
|
||||
NRF_RTC0->PRESCALER = (NRF51_LFCLK_FREQUENCY / OSAL_ST_FREQUENCY) - 1;
|
||||
|
@ -96,6 +128,30 @@ void st_lld_init(void) {
|
|||
NRF_RTC0->TASKS_START = 1;
|
||||
#endif
|
||||
|
||||
#if (NRF51_SYSTEM_TICKS == NRF51_SYSTEM_TICKS_AS_TIMER)
|
||||
NRF_TIMER0->TASKS_CLEAR = 1;
|
||||
|
||||
/*
|
||||
* Using 32-bit mode with prescaler 16 configures this
|
||||
* timer with a 1MHz clock.
|
||||
*/
|
||||
NRF_TIMER0->BITMODE = 3;
|
||||
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 = 0x10000;
|
||||
|
||||
/* Start timer */
|
||||
nvicEnableVector(TIMER0_IRQn, 8);
|
||||
NRF_TIMER0->TASKS_START = 1;
|
||||
#endif
|
||||
|
||||
#endif
|
||||
}
|
||||
|
||||
#endif /* OSAL_ST_MODE != OSAL_ST_MODE_NONE */
|
||||
|
|
|
@ -31,14 +31,39 @@
|
|||
/* Driver constants. */
|
||||
/*===========================================================================*/
|
||||
|
||||
/**
|
||||
* @brief SPI0 interrupt priority level setting.
|
||||
*/
|
||||
#define NRF51_SYSTEM_TICKS_AS_TIMER 1
|
||||
|
||||
/**
|
||||
* @brief SPI0 interrupt priority level setting.
|
||||
*/
|
||||
#define NRF51_SYSTEM_TICKS_AS_RTC 2
|
||||
|
||||
/*===========================================================================*/
|
||||
/* Driver pre-compile time settings. */
|
||||
/*===========================================================================*/
|
||||
|
||||
/**
|
||||
* @brief Select the method to generates system ticks
|
||||
* @details Possibles values are:
|
||||
* NRF51_SYSTEM_TICKS_AS_TIMER for TIMER0
|
||||
* NRF51_SYSTEM_TICKS_AS_RTC for RTC0
|
||||
*/
|
||||
#if !defined(NRF51_SYSTEM_TICKS) || defined(__DOXYGEN__)
|
||||
#define NRF51_SYSTEM_TICKS NRF51_SYSTEM_TICKS_AS_RTC
|
||||
#endif
|
||||
|
||||
/*===========================================================================*/
|
||||
/* Derived constants and error checks. */
|
||||
/*===========================================================================*/
|
||||
|
||||
#if ((NRF51_SYSTEM_TICKS != NRF51_SYSTEM_TICKS_AS_RTC) && \
|
||||
(NRF51_SYSTEM_TICKS != NRF51_SYSTEM_TICKS_AS_TIMER))
|
||||
#error "NRF51_SYSTEM_TICKS illegal value"
|
||||
#endif
|
||||
|
||||
/*===========================================================================*/
|
||||
/* Driver data structures and types. */
|
||||
/*===========================================================================*/
|
||||
|
|
Loading…
Reference in New Issue