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Diffstat (limited to 'Библиотеки/FastLED-master/platforms/arm/k66/clockless_arm_k66.h')
-rw-r--r--Библиотеки/FastLED-master/platforms/arm/k66/clockless_arm_k66.h124
1 files changed, 124 insertions, 0 deletions
diff --git a/Библиотеки/FastLED-master/platforms/arm/k66/clockless_arm_k66.h b/Библиотеки/FastLED-master/platforms/arm/k66/clockless_arm_k66.h
new file mode 100644
index 0000000..6102105
--- /dev/null
+++ b/Библиотеки/FastLED-master/platforms/arm/k66/clockless_arm_k66.h
@@ -0,0 +1,124 @@
+#ifndef __INC_CLOCKLESS_ARM_K66_H
+#define __INC_CLOCKLESS_ARM_K66_H
+
+FASTLED_NAMESPACE_BEGIN
+
+// Definition for a single channel clockless controller for the k66 family of chips, like that used in the teensy 3.6
+// See clockless.h for detailed info on how the template parameters are used.
+#if defined(FASTLED_TEENSY3)
+
+#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 = 50>
+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();
+ if(!showRGBInternal(pixels)) {
+ sei(); delayMicroseconds(WAIT_TIME); cli();
+ showRGBInternal(pixels);
+ }
+ mWait.mark();
+ }
+
+ template<int BITS> __attribute__ ((always_inline)) inline static void writeBits(register uint32_t & next_mark, register data_ptr_t port, register data_t hi, register data_t lo, register uint8_t & b) {
+ for(register uint32_t i = BITS-1; i > 0; i--) {
+ while(ARM_DWT_CYCCNT < next_mark);
+ next_mark = ARM_DWT_CYCCNT + (T1+T2+T3);
+ FastPin<DATA_PIN>::fastset(port, hi);
+ if(b&0x80) {
+ while((next_mark - ARM_DWT_CYCCNT) > (T3+(2*(F_CPU/24000000))));
+ FastPin<DATA_PIN>::fastset(port, lo);
+ } else {
+ while((next_mark - ARM_DWT_CYCCNT) > (T2+T3+(2*(F_CPU/24000000))));
+ FastPin<DATA_PIN>::fastset(port, lo);
+ }
+ b <<= 1;
+ }
+
+ while(ARM_DWT_CYCCNT < next_mark);
+ next_mark = ARM_DWT_CYCCNT + (T1+T2+T3);
+ FastPin<DATA_PIN>::fastset(port, hi);
+
+ if(b&0x80) {
+ while((next_mark - ARM_DWT_CYCCNT) > (T3+(2*(F_CPU/24000000))));
+ FastPin<DATA_PIN>::fastset(port, lo);
+ } else {
+ while((next_mark - ARM_DWT_CYCCNT) > (T2+T3+(2*(F_CPU/24000000))));
+ FastPin<DATA_PIN>::fastset(port, 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 showRGBInternal(PixelController<RGB_ORDER> pixels) {
+ // Get access to the clock
+ ARM_DEMCR |= ARM_DEMCR_TRCENA;
+ ARM_DWT_CTRL |= ARM_DWT_CTRL_CYCCNTENA;
+ ARM_DWT_CYCCNT = 0;
+
+ register data_ptr_t port = FastPin<DATA_PIN>::port();
+ register data_t hi = *port | FastPin<DATA_PIN>::mask();;
+ register data_t lo = *port & ~FastPin<DATA_PIN>::mask();;
+ *port = lo;
+
+ // Setup the pixel controller and load/scale the first byte
+ pixels.preStepFirstByteDithering();
+ register uint8_t b = pixels.loadAndScale0();
+
+ cli();
+ uint32_t next_mark = ARM_DWT_CYCCNT + (T1+T2+T3);
+
+ while(pixels.has(1)) {
+ pixels.stepDithering();
+ #if (FASTLED_ALLOW_INTERRUPTS == 1)
+ cli();
+ // if interrupts took longer than 45µs, punt on the current frame
+ if(ARM_DWT_CYCCNT > next_mark) {
+ if((ARM_DWT_CYCCNT-next_mark) > ((WAIT_TIME-INTERRUPT_THRESHOLD)*CLKS_PER_US)) { sei(); return 0; }
+ }
+
+ hi = *port | FastPin<DATA_PIN>::mask();
+ lo = *port & ~FastPin<DATA_PIN>::mask();
+ #endif
+ // Write first byte, read next byte
+ writeBits<8+XTRA0>(next_mark, port, hi, lo, b);
+ b = pixels.loadAndScale1();
+
+ // Write second byte, read 3rd byte
+ writeBits<8+XTRA0>(next_mark, port, hi, lo, b);
+ b = pixels.loadAndScale2();
+
+ // Write third byte, read 1st byte of next pixel
+ writeBits<8+XTRA0>(next_mark, port, hi, lo, b);
+ b = pixels.advanceAndLoadAndScale0();
+ #if (FASTLED_ALLOW_INTERRUPTS == 1)
+ sei();
+ #endif
+ };
+
+ sei();
+ return ARM_DWT_CYCCNT;
+ }
+};
+#endif
+
+FASTLED_NAMESPACE_END
+
+#endif