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Alex
2019-06-15 22:43:47 +03:00
parent 364bd6a759
commit ed2fb0dcc0
155 changed files with 3946 additions and 549 deletions
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115
libraries/FastLED-3.2.9/platforms/arm/nrf52/arbiter_nrf52.h Normal file
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#ifndef __INC_ARBITER_NRF52
#define __INC_ARBITER_NRF52
#if defined(NRF52_SERIES)
#include "led_sysdefs_arm_nrf52.h"
//FASTLED_NAMESPACE_BEGIN
typedef void (*FASTLED_NRF52_PWM_INTERRUPT_HANDLER)();
// a trick learned from other embedded projects ..
// use the enum as an index to a statically-allocated array
// to store unique information for that instance.
// also provides a count of how many instances were enabled.
//
// See led_sysdefs_arm_nrf52.h for selection....
//
typedef enum _FASTLED_NRF52_ENABLED_PWM_INSTANCE {
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE0)
FASTLED_NRF52_PWM0_INSTANCE_IDX,
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE1)
FASTLED_NRF52_PWM1_INSTANCE_IDX,
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE2)
FASTLED_NRF52_PWM2_INSTANCE_IDX,
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE3)
FASTLED_NRF52_PWM3_INSTANCE_IDX,
#endif
FASTLED_NRF52_PWM_INSTANCE_COUNT
} FASTLED_NRF52_ENABLED_PWM_INSTANCES;
static_assert(FASTLED_NRF52_PWM_INSTANCE_COUNT > 0, "Instance count must be greater than zero -- define FASTLED_NRF52_ENABLE_PWM_INSTNACE[n] (replace `[n]` with digit)");
template <uint32_t _PWM_ID>
class PWM_Arbiter {
private:
static_assert(_PWM_ID < 32, "PWM_ID over 31 breaks current arbitration bitmask");
//const uint32_t _ACQUIRE_MASK = (1u << _PWM_ID) ;
//const uint32_t _CLEAR_MASK = ~((uint32_t)(1u << _PWM_ID));
static uint32_t s_PwmInUse;
static NRF_PWM_Type * const s_PWM;
static IRQn_Type const s_PWM_IRQ;
static FASTLED_NRF52_PWM_INTERRUPT_HANDLER volatile s_Isr;
public:
static void isr_handler() {
return s_Isr();
}
FASTLED_NRF52_INLINE_ATTRIBUTE static bool isAcquired() {
return (0u != (s_PwmInUse & 1u)); // _ACQUIRE_MASK
}
FASTLED_NRF52_INLINE_ATTRIBUTE static void acquire(FASTLED_NRF52_PWM_INTERRUPT_HANDLER isr) {
while (!tryAcquire(isr));
}
FASTLED_NRF52_INLINE_ATTRIBUTE static bool tryAcquire(FASTLED_NRF52_PWM_INTERRUPT_HANDLER isr) {
uint32_t oldValue = __sync_fetch_and_or(&s_PwmInUse, 1u); // _ACQUIRE_MASK
if (0u == (oldValue & 1u)) { // _ACQUIRE_MASK
s_Isr = isr;
return true;
}
return false;
}
FASTLED_NRF52_INLINE_ATTRIBUTE static void releaseFromIsr() {
uint32_t oldValue = __sync_fetch_and_and(&s_PwmInUse, ~1u); // _CLEAR_MASK
if (0u == (oldValue & 1u)) { // _ACQUIRE_MASK
// TODO: This should never be true... indicates was not held.
// Assert here?
(void)oldValue;
}
return;
}
FASTLED_NRF52_INLINE_ATTRIBUTE static NRF_PWM_Type * getPWM() {
return s_PWM;
}
FASTLED_NRF52_INLINE_ATTRIBUTE static IRQn_Type getIRQn() { return s_PWM_IRQ; }
};
template <uint32_t _PWM_ID> NRF_PWM_Type * const PWM_Arbiter<_PWM_ID>::s_PWM =
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE0)
(_PWM_ID == 0 ? NRF_PWM0 :
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE1)
(_PWM_ID == 1 ? NRF_PWM1 :
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE2)
(_PWM_ID == 2 ? NRF_PWM2 :
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE3)
(_PWM_ID == 3 ? NRF_PWM3 :
#endif
(NRF_PWM_Type*)-1
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE0)
)
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE1)
)
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE2)
)
#endif
#if defined(FASTLED_NRF52_ENABLE_PWM_INSTANCE3)
)
#endif
;
template <uint32_t _PWM_ID> IRQn_Type const PWM_Arbiter<_PWM_ID>::s_PWM_IRQ = ((IRQn_Type)((uint8_t)((uint32_t)(s_PWM) >> 12)));
template <uint32_t _PWM_ID> uint32_t PWM_Arbiter<_PWM_ID>::s_PwmInUse = 0;
template <uint32_t _PWM_ID> FASTLED_NRF52_PWM_INTERRUPT_HANDLER volatile PWM_Arbiter<_PWM_ID>::s_Isr = NULL;
//FASTLED_NAMESPACE_END
#endif // NRF52_SERIES
#endif // __INC_ARBITER_NRF52