diff options
Diffstat (limited to 'Библиотеки/FastLED-master/platforms/esp/8266/clockless_esp8266.h')
-rw-r--r-- | Библиотеки/FastLED-master/platforms/esp/8266/clockless_esp8266.h | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/Библиотеки/FastLED-master/platforms/esp/8266/clockless_esp8266.h b/Библиотеки/FastLED-master/platforms/esp/8266/clockless_esp8266.h new file mode 100644 index 0000000..20ae641 --- /dev/null +++ b/Библиотеки/FastLED-master/platforms/esp/8266/clockless_esp8266.h @@ -0,0 +1,117 @@ +#pragma once + +FASTLED_NAMESPACE_BEGIN + +#ifdef FASTLED_DEBUG_COUNT_FRAME_RETRIES +extern uint32_t _frame_cnt; +extern uint32_t _retry_cnt; +#endif + +// Info on reading cycle counter from https://github.com/kbeckmann/nodemcu-firmware/blob/ws2812-dual/app/modules/ws2812.c +__attribute__ ((always_inline)) inline static uint32_t __clock_cycles() { + uint32_t cyc; + __asm__ __volatile__ ("rsr %0,ccount":"=a" (cyc)); + return cyc; +} + +#define FASTLED_HAS_CLOCKLESS 1 + +template <int DATA_PIN, int T1, int T2, int T3, EOrder RGB_ORDER = RGB, int XTRA0 = 0, bool FLIP = false, int WAIT_TIME = 5> +class ClocklessController : public CPixelLEDController<RGB_ORDER> { + typedef typename FastPin<DATA_PIN>::port_ptr_t data_ptr_t; + typedef typename FastPin<DATA_PIN>::port_t data_t; + + data_t mPinMask; + data_ptr_t mPort; + CMinWait<WAIT_TIME> mWait; +public: + virtual void init() { + FastPin<DATA_PIN>::setOutput(); + mPinMask = FastPin<DATA_PIN>::mask(); + mPort = FastPin<DATA_PIN>::port(); + } + + virtual uint16_t getMaxRefreshRate() const { return 400; } + +protected: + + virtual void showPixels(PixelController<RGB_ORDER> & pixels) { + // mWait.wait(); + int cnt = FASTLED_INTERRUPT_RETRY_COUNT; + while((showRGBInternal(pixels)==0) && cnt--) { + #ifdef FASTLED_DEBUG_COUNT_FRAME_RETRIES + _retry_cnt++; + #endif + os_intr_unlock(); + delayMicroseconds(WAIT_TIME); + os_intr_lock(); + } + // mWait.mark(); + } + +#define _ESP_ADJ (0) +#define _ESP_ADJ2 (0) + + template<int BITS> __attribute__ ((always_inline)) inline static void writeBits(register uint32_t & last_mark, register uint32_t b) { + b = ~b; b <<= 24; + for(register uint32_t i = BITS; i > 0; i--) { + while((__clock_cycles() - last_mark) < (T1+T2+T3)); + last_mark = __clock_cycles(); + FastPin<DATA_PIN>::hi(); + + while((__clock_cycles() - last_mark) < T1); + if(b & 0x80000000L) { FastPin<DATA_PIN>::lo(); } + b <<= 1; + + while((__clock_cycles() - last_mark) < (T1+T2)); + FastPin<DATA_PIN>::lo(); + } + } + + // This method is made static to force making register Y available to use for data on AVR - if the method is non-static, then + // gcc will use register Y for the this pointer. + static uint32_t ICACHE_RAM_ATTR showRGBInternal(PixelController<RGB_ORDER> pixels) { + // Setup the pixel controller and load/scale the first byte + pixels.preStepFirstByteDithering(); + register uint32_t b = pixels.loadAndScale0(); + pixels.preStepFirstByteDithering(); + os_intr_lock(); + uint32_t start = __clock_cycles(); + uint32_t last_mark = start; + while(pixels.has(1)) { + // Write first byte, read next byte + writeBits<8+XTRA0>(last_mark, b); + b = pixels.loadAndScale1(); + + // Write second byte, read 3rd byte + writeBits<8+XTRA0>(last_mark, b); + b = pixels.loadAndScale2(); + + // Write third byte, read 1st byte of next pixel + writeBits<8+XTRA0>(last_mark, b); + b = pixels.advanceAndLoadAndScale0(); + + #if (FASTLED_ALLOW_INTERRUPTS == 1) + os_intr_unlock(); + #endif + + pixels.stepDithering(); + + #if (FASTLED_ALLOW_INTERRUPTS == 1) + os_intr_lock(); + // if interrupts took longer than 45µs, punt on the current frame + if((int32_t)(__clock_cycles()-last_mark) > 0) { + if((int32_t)(__clock_cycles()-last_mark) > (T1+T2+T3+((WAIT_TIME-INTERRUPT_THRESHOLD)*CLKS_PER_US))) { sei(); return 0; } + } + #endif + }; + + os_intr_unlock(); + #ifdef FASTLED_DEBUG_COUNT_FRAME_RETRIES + _frame_cnt++; + #endif + return __clock_cycles() - start; + } +}; + +FASTLED_NAMESPACE_END |