On Mon, Jan 11, 2016 at 1:25 PM, Marcos Díaz < marcos.d...@tallertechnologies.com> wrote:
> Well, we could still use the patch you sent with the protection in is > pending, but I think this will break the BSPs I mentioned, since you > changed timecounter functions signatures. Am I right? > > Let's just fix it right. The timecounters are new so getting them right in the first release with them is important. > On Mon, Jan 11, 2016 at 4:18 PM, Sebastian Huber < > sebastian.hu...@embedded-brains.de> wrote: > >> Hello, >> >> I already created a ticket which blocks the 4.11 release for this bug: >> >> https://devel.rtems.org/ticket/2502 >> >> I sent a new version of the patch to one of your previous threads some >> days ago: >> >> https://lists.rtems.org/pipermail/devel/2016-January/013289.html >> >> There is still a bug in it, since we must disable interrupts in the is >> pending function, but the general approach should work. >> >> ----- Am 11. Jan 2016 um 20:05 schrieb Marcos Díaz >> marcos.d...@tallertechnologies.com: >> >> > I made a fast search: >> > These BSPs use *rtems_timecounter_simple_downcounter*: >> > arm/shared/armv7m >> > m68k/mcf52235 >> > m68k/mcf5225x >> > m68k/mcf5329 >> > m68k/uC5282 >> > powerpc/mpc55xxevb >> > sparc/erc32 >> > sparc/leon2 >> > sparc/leon3 >> > sparc/shared >> > >> > These use *rtems_timecounter_simple_upcounter*: >> > powerpc/mpc55xxevb >> > arm/lpc22xx >> > >> > We should search a little more for the other changes but at least these >> > BSPs will be affected. Maybe we should wait Sebastian's opinion, since >> he >> > suggested the change in timecounter's signatures. >> > >> > On Mon, Jan 11, 2016 at 3:44 PM, Joel Sherrill <j...@rtems.org> wrote: >> > >> >> >> >> >> >> On Mon, Jan 11, 2016 at 12:28 PM, Marcos Díaz < >> >> marcos.d...@tallertechnologies.com> wrote: >> >> >> >>> I will issue a ticket. But I noticed that in my patch I include >> changes >> >>> to common code that Sebastian suggested, and this will break any >> other BSP >> >>> that uses rtems timecounter simple downcounter or upcounter, since >> these >> >>> function's signatures changed. Should we update all BSPs? Or make >> changes >> >>> more locally to our BSP? Meanwhile please do not apply the patch I >> sent. >> >>> >> >>> >> >> I would prefer not to ship BSPs with bugs but fixing them comes with >> risks. >> >> So I would lean to the same fix on the master and 4.11 branch fixing it >> >> where it needs to be fixed. >> >> >> >> What BSPs does this change impact? >> >> >> >> --joel >> >> >> >> >> >>> >> >>> On Mon, Jan 11, 2016 at 3:16 PM, Joel Sherrill <j...@rtems.org> >> wrote: >> >>> >> >>>> At this point, a ticket is needed for anything applied to 4.11 that >> is >> >>>> not release >> >>>> mechanics related. >> >>>> >> >>>> --joel >> >>>> >> >>>> On Mon, Jan 11, 2016 at 11:47 AM, Marcos Diaz < >> >>>> marcos.d...@tallertechnologies.com> wrote: >> >>>> >> >>>>> Hi Sebastian, >> >>>>> >> >>>>> we did some more testing and found out what's causing the problem. >> >>>>> Based on what >> >>>>> I posted at >> >>>>> https://lists.rtems.org/pipermail/devel/2015-December/013235.html, >> >>>>> the problem arises when the ticker interrupt occurs while a task is >> >>>>> executing >> >>>>> one of the instructions that make up the following line: >> >>>>> >> >>>>> is_count_pending = (systick->csr & ARMV7M_SYSTICK_CSR_COUNTFLAG) != >> 0; >> >>>>> >> >>>>> which compiling with -O3 are: >> >>>>> >> >>>>> ldr.w r3, [r9] >> >>>>> ubfx r5, r3, #16, #1 >> >>>>> strb.w r5, [r8, #64] >> >>>>> >> >>>>> If the SysTick counts to 0 and the ldr executes before the interrupt >> >>>>> occurs, >> >>>>> R3 will have the CSR.COUNTFLAG bit set. Even though >> _ARMV7M_TC_at_tick >> >>>>> will >> >>>>> clear the is_count_pending boolean, the task will still see it as >> true. >> >>>>> >> >>>>> The solution we found is to simply disable interrupts while reading >> >>>>> that flag. >> >>>>> We also use a local variable inside _ARMV7M_TC_is_pending instead of >> >>>>> directly >> >>>>> returning the current value of the is_count_pending global, just in >> >>>>> case. >> >>>>> >> >>>>> Here's the patch that fixes it; this applies to the 4.11 branch. >> >>>>> Do we have to open a new thread for it to be applied to the >> mainline, >> >>>>> or will >> >>>>> this suffice? Should we open a ticket for 4.11? >> >>>>> >> >>>>> --- >> >>>>> .../arm/shared/armv7m/clock/armv7m-clock-config.c | 38 >> >>>>> +++++++++++++++------- >> >>>>> c/src/lib/libbsp/shared/clockdrv_shell.h | 16 ++++++++- >> >>>>> cpukit/rtems/src/clocktick.c | 6 +++- >> >>>>> cpukit/sapi/include/rtems/timecounter.h | 35 >> >>>>> ++++++++++++++++---- >> >>>>> cpukit/score/include/rtems/score/timecounter.h | 37 >> >>>>> +++++++++++++++++++-- >> >>>>> cpukit/score/src/kern_tc.c | 16 ++++----- >> >>>>> doc/bsp_howto/clock.t | 13 +++++++- >> >>>>> 7 files changed, 130 insertions(+), 31 deletions(-) >> >>>>> >> >>>>> diff --git >> >>>>> a/c/src/lib/libbsp/arm/shared/armv7m/clock/armv7m-clock-config.c >> >>>>> b/c/src/lib/libbsp/arm/shared/armv7m/clock/armv7m-clock-config.c >> >>>>> index e78684c..53bd7cf 100644 >> >>>>> --- a/c/src/lib/libbsp/arm/shared/armv7m/clock/armv7m-clock-config.c >> >>>>> +++ b/c/src/lib/libbsp/arm/shared/armv7m/clock/armv7m-clock-config.c >> >>>>> @@ -25,6 +25,8 @@ static void Clock_isr(void *arg); >> >>>>> >> >>>>> static rtems_timecounter_simple _ARMV7M_TC; >> >>>>> >> >>>>> +static bool is_count_pending = false; >> >>>>> + >> >>>>> static uint32_t _ARMV7M_TC_get(rtems_timecounter_simple *tc) >> >>>>> { >> >>>>> volatile ARMV7M_Systick *systick = _ARMV7M_Systick; >> >>>>> @@ -34,9 +36,20 @@ static uint32_t >> >>>>> _ARMV7M_TC_get(rtems_timecounter_simple *tc) >> >>>>> >> >>>>> static bool _ARMV7M_TC_is_pending(rtems_timecounter_simple *tc) >> >>>>> { >> >>>>> - volatile ARMV7M_SCB *scb = _ARMV7M_SCB; >> >>>>> + volatile ARMV7M_Systick *systick = _ARMV7M_Systick; >> >>>>> + ISR_lock_Context lock_context; >> >>>>> + >> >>>>> + _Timecounter_Acquire( &lock_context ); >> >>>>> + /* We use this bool since the hardware flag is reset each time >> it is >> >>>>> read. */ >> >>>>> + if (!is_count_pending) >> >>>>> + { >> >>>>> + is_count_pending = ((systick->csr & >> ARMV7M_SYSTICK_CSR_COUNTFLAG) >> >>>>> != 0 ); >> >>>>> + } >> >>>>> >> >>>>> - return ((scb->icsr & ARMV7M_SCB_ICSR_PENDSTSET) != 0); >> >>>>> + const bool is_pending_local = is_count_pending; >> >>>>> + >> >>>>> + _Timecounter_Release( &lock_context ); >> >>>>> + return is_pending_local; >> >>>>> } >> >>>>> >> >>>>> static uint32_t _ARMV7M_TC_get_timecount(struct timecounter *tc) >> >>>>> @@ -48,19 +61,23 @@ static uint32_t _ARMV7M_TC_get_timecount(struct >> >>>>> timecounter *tc) >> >>>>> ); >> >>>>> } >> >>>>> >> >>>>> -static void _ARMV7M_TC_tick(void) >> >>>>> -{ >> >>>>> - rtems_timecounter_simple_downcounter_tick(&_ARMV7M_TC, >> >>>>> _ARMV7M_TC_get); >> >>>>> -} >> >>>>> - >> >>>>> -static void _ARMV7M_Systick_at_tick(void) >> >>>>> +static void _ARMV7M_TC_at_tick(rtems_timecounter_simple *tc) >> >>>>> { >> >>>>> volatile ARMV7M_Systick *systick = _ARMV7M_Systick; >> >>>>> - >> >>>>> + is_count_pending = false; >> >>>>> /* Clear COUNTFLAG */ >> >>>>> systick->csr; >> >>>>> } >> >>>>> >> >>>>> +static void _ARMV7M_TC_tick(void) >> >>>>> +{ >> >>>>> + rtems_timecounter_simple_downcounter_tick( >> >>>>> + &_ARMV7M_TC, >> >>>>> + _ARMV7M_TC_get, >> >>>>> + _ARMV7M_TC_at_tick >> >>>>> + ); >> >>>>> +} >> >>>>> + >> >>>>> static void _ARMV7M_Systick_handler(void) >> >>>>> { >> >>>>> _ARMV7M_Interrupt_service_enter(); >> >>>>> @@ -111,9 +128,6 @@ static void _ARMV7M_Systick_cleanup(void) >> >>>>> >> >>>>> #define Clock_driver_timecounter_tick() _ARMV7M_TC_tick() >> >>>>> >> >>>>> -#define Clock_driver_support_at_tick() \ >> >>>>> - _ARMV7M_Systick_at_tick() >> >>>>> - >> >>>>> #define Clock_driver_support_initialize_hardware() \ >> >>>>> _ARMV7M_Systick_initialize() >> >>>>> >> >>>>> diff --git a/c/src/lib/libbsp/shared/clockdrv_shell.h >> >>>>> b/c/src/lib/libbsp/shared/clockdrv_shell.h >> >>>>> index d546fb8..96b962f 100644 >> >>>>> --- a/c/src/lib/libbsp/shared/clockdrv_shell.h >> >>>>> +++ b/c/src/lib/libbsp/shared/clockdrv_shell.h >> >>>>> @@ -44,6 +44,13 @@ >> >>>>> #define Clock_driver_support_find_timer() >> >>>>> #endif >> >>>>> >> >>>>> +/** >> >>>>> + * @brief Do nothing by default. >> >>>>> + */ >> >>>>> +#ifndef Clock_driver_support_at_tick >> >>>>> + #define Clock_driver_support_at_tick() >> >>>>> +#endif >> >>>>> + >> >>>>> /* >> >>>>> * A specialized clock driver may use for example >> >>>>> rtems_timecounter_tick_simple() >> >>>>> * instead of the default. >> >>>>> @@ -108,7 +115,14 @@ rtems_isr Clock_isr( >> >>>>> && _Thread_Executing->Start.entry_point >> >>>>> == (Thread_Entry) rtems_configuration_get_idle_task() >> >>>>> ) { >> >>>>> - _Timecounter_Tick_simple(interval, >> >>>>> (*tc->tc_get_timecount)(tc)); >> >>>>> + ISR_lock_Context lock_context; >> >>>>> + >> >>>>> + _Timecounter_Acquire(&lock_context); >> >>>>> + _Timecounter_Tick_simple( >> >>>>> + interval, >> >>>>> + (*tc->tc_get_timecount)(tc), >> >>>>> + &lock_context >> >>>>> + ); >> >>>>> } >> >>>>> >> >>>>> Clock_driver_support_at_tick(); >> >>>>> diff --git a/cpukit/rtems/src/clocktick.c >> b/cpukit/rtems/src/clocktick.c >> >>>>> index e2cd35f..a6bf26d 100644 >> >>>>> --- a/cpukit/rtems/src/clocktick.c >> >>>>> +++ b/cpukit/rtems/src/clocktick.c >> >>>>> @@ -23,9 +23,13 @@ >> >>>>> >> >>>>> rtems_status_code rtems_clock_tick( void ) >> >>>>> { >> >>>>> + ISR_lock_Context lock_context; >> >>>>> + >> >>>>> + _Timecounter_Acquire( &lock_context ); >> >>>>> _Timecounter_Tick_simple( >> >>>>> rtems_configuration_get_microseconds_per_tick(), >> >>>>> - 0 >> >>>>> + 0, >> >>>>> + &lock_context >> >>>>> ); >> >>>>> >> >>>>> return RTEMS_SUCCESSFUL; >> >>>>> diff --git a/cpukit/sapi/include/rtems/timecounter.h >> >>>>> b/cpukit/sapi/include/rtems/timecounter.h >> >>>>> index 04bc534..06b3973 100644 >> >>>>> --- a/cpukit/sapi/include/rtems/timecounter.h >> >>>>> +++ b/cpukit/sapi/include/rtems/timecounter.h >> >>>>> @@ -94,6 +94,13 @@ typedef struct { >> >>>>> } rtems_timecounter_simple; >> >>>>> >> >>>>> /** >> >>>>> + * @brief At tick handling done under protection of the timecounter >> >>>>> lock. >> >>>>> + */ >> >>>>> +typedef uint32_t rtems_timecounter_simple_at_tick( >> >>>>> + rtems_timecounter_simple *tc >> >>>>> +); >> >>>>> + >> >>>>> +/** >> >>>>> * @brief Returns the current value of a simple timecounter. >> >>>>> */ >> >>>>> typedef uint32_t rtems_timecounter_simple_get( >> >>>>> @@ -199,20 +206,28 @@ RTEMS_INLINE_ROUTINE uint32_t >> >>>>> rtems_timecounter_simple_scale( >> >>>>> * >> >>>>> * @param[in] tc The simple timecounter. >> >>>>> * @param[in] get The method to get the value of the simple >> >>>>> timecounter. >> >>>>> + * @param[in] at_tick The method to perform work under timecounter >> lock >> >>>>> + * protection at this tick, e.g. clear a pending flag. >> >>>>> */ >> >>>>> RTEMS_INLINE_ROUTINE void >> rtems_timecounter_simple_downcounter_tick( >> >>>>> - rtems_timecounter_simple *tc, >> >>>>> - rtems_timecounter_simple_get get >> >>>>> + rtems_timecounter_simple *tc, >> >>>>> + rtems_timecounter_simple_get get, >> >>>>> + rtems_timecounter_simple_at_tick at_tick >> >>>>> ) >> >>>>> { >> >>>>> + ISR_lock_Context lock_context; >> >>>>> uint32_t current; >> >>>>> >> >>>>> + _Timecounter_Acquire( &lock_context ); >> >>>>> + >> >>>>> + ( *at_tick )( tc ); >> >>>>> + >> >>>>> current = rtems_timecounter_simple_scale( >> >>>>> tc, >> >>>>> tc->real_interval - ( *get )( tc ) >> >>>>> ); >> >>>>> >> >>>>> - _Timecounter_Tick_simple( tc->binary_interval, current ); >> >>>>> + _Timecounter_Tick_simple( tc->binary_interval, current, >> >>>>> &lock_context ); >> >>>>> } >> >>>>> >> >>>>> /** >> >>>>> @@ -220,17 +235,25 @@ RTEMS_INLINE_ROUTINE void >> >>>>> rtems_timecounter_simple_downcounter_tick( >> >>>>> * >> >>>>> * @param[in] tc The simple timecounter. >> >>>>> * @param[in] get The method to get the value of the simple >> >>>>> timecounter. >> >>>>> + * @param[in] at_tick The method to perform work under timecounter >> lock >> >>>>> + * protection at this tick, e.g. clear a pending flag. >> >>>>> */ >> >>>>> RTEMS_INLINE_ROUTINE void rtems_timecounter_simple_upcounter_tick( >> >>>>> - rtems_timecounter_simple *tc, >> >>>>> - rtems_timecounter_simple_get get >> >>>>> + rtems_timecounter_simple *tc, >> >>>>> + rtems_timecounter_simple_get get, >> >>>>> + rtems_timecounter_simple_at_tick at_tick >> >>>>> ) >> >>>>> { >> >>>>> + ISR_lock_Context lock_context; >> >>>>> uint32_t current; >> >>>>> >> >>>>> + _Timecounter_Acquire( &lock_context ); >> >>>>> + >> >>>>> + ( *at_tick )( tc ); >> >>>>> + >> >>>>> current = rtems_timecounter_simple_scale( tc, ( *get )( tc ) ); >> >>>>> >> >>>>> - _Timecounter_Tick_simple( tc->binary_interval, current ); >> >>>>> + _Timecounter_Tick_simple( tc->binary_interval, current, >> >>>>> &lock_context ); >> >>>>> } >> >>>>> >> >>>>> /** >> >>>>> diff --git a/cpukit/score/include/rtems/score/timecounter.h >> >>>>> b/cpukit/score/include/rtems/score/timecounter.h >> >>>>> index 0d17cc7..0e611b5 100644 >> >>>>> --- a/cpukit/score/include/rtems/score/timecounter.h >> >>>>> +++ b/cpukit/score/include/rtems/score/timecounter.h >> >>>>> @@ -26,6 +26,8 @@ >> >>>>> #include <sys/time.h> >> >>>>> #include <sys/timetc.h> >> >>>>> >> >>>>> +#include <rtems/score/isrlock.h> >> >>>>> + >> >>>>> #ifdef __cplusplus >> >>>>> extern "C" { >> >>>>> #endif /* __cplusplus */ >> >>>>> @@ -161,6 +163,31 @@ void _Timecounter_Install( struct timecounter >> *tc >> >>>>> ); >> >>>>> void _Timecounter_Tick( void ); >> >>>>> >> >>>>> /** >> >>>>> + * @brief Lock to protect the timecounter mechanic. >> >>>>> + */ >> >>>>> +ISR_LOCK_DECLARE( extern, _Timecounter_Lock ) >> >>>>> + >> >>>>> +/** >> >>>>> + * @brief Acquires the timecounter lock. >> >>>>> + * >> >>>>> + * @param[in] lock_context The lock context. >> >>>>> + * >> >>>>> + * See _Timecounter_Tick_simple(). >> >>>>> + */ >> >>>>> +#define _Timecounter_Acquire( lock_context ) \ >> >>>>> + _ISR_lock_ISR_disable_and_acquire( &_Timecounter_Lock, >> lock_context ) >> >>>>> + >> >>>>> +/** >> >>>>> + * @brief Releases the timecounter lock. >> >>>>> + * >> >>>>> + * @param[in] lock_context The lock context. >> >>>>> + * >> >>>>> + * See _Timecounter_Tick_simple(). >> >>>>> + */ >> >>>>> +#define _Timecounter_Release(lock_context) \ >> >>>>> + _ISR_lock_Release_and_ISR_enable(&_Timecounter_Lock, >> lock_context) >> >>>>> + >> >>>>> +/** >> >>>>> * @brief Performs a simple timecounter tick. >> >>>>> * >> >>>>> * This is a special purpose tick function for simple timecounter >> to >> >>>>> support >> >>>>> @@ -169,8 +196,14 @@ void _Timecounter_Tick( void ); >> >>>>> * @param[in] delta The time in timecounter ticks elapsed since the >> >>>>> last call >> >>>>> * to _Timecounter_Tick_simple(). >> >>>>> * @param[in] offset The current value of the timecounter. >> >>>>> - */ >> >>>>> -void _Timecounter_Tick_simple( uint32_t delta, uint32_t offset ); >> >>>>> + * @param[in] lock_context The lock context of the corresponding >> >>>>> + * _Timecounter_Acquire(). >> >>>>> + */ >> >>>>> +void _Timecounter_Tick_simple( >> >>>>> + uint32_t delta, >> >>>>> + uint32_t offset, >> >>>>> + ISR_lock_Context *lock_context >> >>>>> +); >> >>>>> >> >>>>> /** >> >>>>> * @brief The wall clock time in seconds. >> >>>>> diff --git a/cpukit/score/src/kern_tc.c b/cpukit/score/src/kern_tc.c >> >>>>> index f6a1136..4257533 100644 >> >>>>> --- a/cpukit/score/src/kern_tc.c >> >>>>> +++ b/cpukit/score/src/kern_tc.c >> >>>>> @@ -64,7 +64,9 @@ __FBSDID("$FreeBSD r284178 >> 2015-06-09T11:49:56Z$"); >> >>>>> #ifdef __rtems__ >> >>>>> #include <limits.h> >> >>>>> #include <rtems.h> >> >>>>> -ISR_LOCK_DEFINE(static, _Timecounter_Lock, "Timecounter"); >> >>>>> +ISR_LOCK_DEFINE(, _Timecounter_Lock, "Timecounter") >> >>>>> +#define _Timecounter_Release(lock_context) \ >> >>>>> + _ISR_lock_Release_and_ISR_enable(&_Timecounter_Lock, >> lock_context) >> >>>>> #define hz rtems_clock_get_ticks_per_second() >> >>>>> #define printf(...) >> >>>>> #define log(...) >> >>>>> @@ -1383,7 +1385,7 @@ tc_windup(void) >> >>>>> #ifdef __rtems__ >> >>>>> ISR_lock_Context lock_context; >> >>>>> >> >>>>> - _ISR_lock_ISR_disable_and_acquire(&_Timecounter_Lock, >> >>>>> &lock_context); >> >>>>> + _Timecounter_Acquire(&lock_context); >> >>>>> #endif /* __rtems__ */ >> >>>>> >> >>>>> /* >> >>>>> @@ -1538,7 +1540,7 @@ tc_windup(void) >> >>>>> timekeep_push_vdso(); >> >>>>> #endif /* __rtems__ */ >> >>>>> #ifdef __rtems__ >> >>>>> - _ISR_lock_Release_and_ISR_enable(&_Timecounter_Lock, >> >>>>> &lock_context); >> >>>>> + _Timecounter_Release(&lock_context); >> >>>>> #endif /* __rtems__ */ >> >>>>> } >> >>>>> >> >>>>> @@ -1963,14 +1965,12 @@ _Timecounter_Tick(void) >> >>>>> } >> >>>>> #ifdef __rtems__ >> >>>>> void >> >>>>> -_Timecounter_Tick_simple(uint32_t delta, uint32_t offset) >> >>>>> +_Timecounter_Tick_simple(uint32_t delta, uint32_t offset, >> >>>>> + ISR_lock_Context *lock_context) >> >>>>> { >> >>>>> struct bintime bt; >> >>>>> struct timehands *th; >> >>>>> uint32_t ogen; >> >>>>> - ISR_lock_Context lock_context; >> >>>>> - >> >>>>> - _ISR_lock_ISR_disable_and_acquire(&_Timecounter_Lock, >> >>>>> &lock_context); >> >>>>> >> >>>>> th = timehands; >> >>>>> ogen = th->th_generation; >> >>>>> @@ -1997,7 +1997,7 @@ _Timecounter_Tick_simple(uint32_t delta, >> uint32_t >> >>>>> offset) >> >>>>> time_second = th->th_microtime.tv_sec; >> >>>>> time_uptime = th->th_offset.sec; >> >>>>> >> >>>>> - _ISR_lock_Release_and_ISR_enable(&_Timecounter_Lock, >> >>>>> &lock_context); >> >>>>> + _Timecounter_Release(lock_context); >> >>>>> >> >>>>> _Watchdog_Tick(); >> >>>>> } >> >>>>> diff --git a/doc/bsp_howto/clock.t b/doc/bsp_howto/clock.t >> >>>>> index f58b898..2891bb2 100644 >> >>>>> --- a/doc/bsp_howto/clock.t >> >>>>> +++ b/doc/bsp_howto/clock.t >> >>>>> @@ -89,6 +89,13 @@ static uint32_t some_tc_get( >> >>>>> rtems_timecounter_simple *tc ) >> >>>>> return some.counter; >> >>>>> @} >> >>>>> >> >>>>> +static void some_tc_at_tick( rtems_timecounter_simple *tc ) >> >>>>> +@{ >> >>>>> + /* >> >>>>> + * Do work necessary at the clock tick interrupt, e.g. clear a >> >>>>> pending flag. >> >>>>> + */ >> >>>>> +@} >> >>>>> + >> >>>>> static bool some_tc_is_pending( rtems_timecounter_simple *tc ) >> >>>>> @{ >> >>>>> return some.is_pending; >> >>>>> @@ -105,7 +112,11 @@ static uint32_t some_tc_get_timecount( struct >> >>>>> timecounter *tc ) >> >>>>> >> >>>>> static void some_tc_tick( void ) >> >>>>> @{ >> >>>>> - rtems_timecounter_simple_downcounter_tick( &some_tc, some_tc_get >> ); >> >>>>> + rtems_timecounter_simple_downcounter_tick( >> >>>>> + &some_tc, >> >>>>> + some_tc_get, >> >>>>> + some_tc_at_tick >> >>>>> + ); >> >>>>> @} >> >>>>> >> >>>>> static void some_support_initialize_hardware( void ) >> >>>>> -- >> >>>>> 2.7.0 >> >>>>> >> >>>>> _______________________________________________ >> >>>>> devel mailing list >> >>>>> devel@rtems.org >> >>>>> http://lists.rtems.org/mailman/listinfo/devel >> >>>>> >> >>>> >> >>>> >> >>> >> >>> >> >>> -- >> >>> >> >>> ______________________________ >> >>> >> >>> <http://www.tallertechnologies.com> >> >>> >> >>> >> >>> Marcos Díaz >> >>> >> >>> Software Engineer >> >>> >> >>> >> >>> San Lorenzo 47, 3rd Floor, Office 5 >> >>> >> >>> Córdoba, Argentina >> >>> >> >>> >> >>> Phone: +54 351 4217888 / +54 351 4218211/ +54 351 7617452 >> >>> >> >>> Skype: markdiaz22 >> >>> >> >>> >> >> >> > >> > >> > -- >> > >> > ______________________________ >> > >> > <http://www.tallertechnologies.com> >> > >> > >> > Marcos Díaz >> > >> > Software Engineer >> > >> > >> > San Lorenzo 47, 3rd Floor, Office 5 >> > >> > Córdoba, Argentina >> > >> > >> > Phone: +54 351 4217888 / +54 351 4218211/ +54 351 7617452 >> > >> > Skype: markdiaz22 >> > > > > -- > > ______________________________ > > <http://www.tallertechnologies.com> > > > Marcos Díaz > > Software Engineer > > > San Lorenzo 47, 3rd Floor, Office 5 > > Córdoba, Argentina > > > Phone: +54 351 4217888 / +54 351 4218211/ +54 351 7617452 > > Skype: markdiaz22 > >
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