1 files changed, 91 insertions, 0 deletions
diff --git a/.pio/libdeps/esp32-s3-n16r8/Adafruit NeoPixel/esp8266.c b/.pio/libdeps/esp32-s3-n16r8/Adafruit NeoPixel/esp8266.c
new file mode 100644
index 0000000..9fe0df6
--- /dev/null
+++ b/.pio/libdeps/esp32-s3-n16r8/Adafruit NeoPixel/esp8266.c
@@ -0,0 +1,91 @@
+// This is a mash-up of the Due show() code + insights from Michael Miller's
+// ESP8266 work for the NeoPixelBus library: github.com/Makuna/NeoPixelBus
+// Needs to be a separate .c file to enforce ICACHE_RAM_ATTR execution.
+
+#if defined(ESP8266)
+
+#include <Arduino.h>
+#ifdef ESP8266
+#include <eagle_soc.h>
+#endif
+
+static uint32_t _getCycleCount(void) __attribute__((always_inline));
+static inline uint32_t _getCycleCount(void) {
+    uint32_t ccount;
+    __asm__ __volatile__("rsr %0,ccount" : "=a"(ccount));
+    return ccount;
+}
+
+#ifdef ESP8266
+IRAM_ATTR void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes,
+                       __attribute__((unused)) boolean is800KHz) {
+#else
+void espShow(uint8_t pin, uint8_t *pixels, uint32_t numBytes,
+             boolean is800KHz) {
+#endif
+
+#define CYCLES_800_T0H (F_CPU / 2500001) // 0.4us
+#define CYCLES_800_T1H (F_CPU / 1250001) // 0.8us
+#define CYCLES_800 (F_CPU / 800001)      // 1.25us per bit
+#define CYCLES_400_T0H (F_CPU / 2000000) // 0.5uS
+#define CYCLES_400_T1H (F_CPU / 833333)  // 1.2us
+#define CYCLES_400 (F_CPU / 400000)      // 2.5us per bit
+
+    uint8_t *p, *end, pix, mask;
+    uint32_t t, time0, time1, period, c, startTime;
+
+#ifdef ESP8266
+    uint32_t pinMask;
+    pinMask = _BV(pin);
+#endif
+
+    p = pixels;
+    end = p + numBytes;
+    pix = *p++;
+    mask = 0x80;
+    startTime = 0;
+
+#ifdef NEO_KHZ400
+    if (is800KHz) {
+#endif
+        time0 = CYCLES_800_T0H;
+        time1 = CYCLES_800_T1H;
+        period = CYCLES_800;
+#ifdef NEO_KHZ400
+    } else { // 400 KHz bitstream
+        time0 = CYCLES_400_T0H;
+        time1 = CYCLES_400_T1H;
+        period = CYCLES_400;
+    }
+#endif
+
+    for (t = time0;; t = time0) {
+        if (pix & mask)
+            t = time1; // Bit high duration
+        while (((c = _getCycleCount()) - startTime) < period)
+            ; // Wait for bit start
+#ifdef ESP8266
+        GPIO_REG_WRITE(GPIO_OUT_W1TS_ADDRESS, pinMask); // Set high
+#else
+        gpio_set_level(pin, HIGH);
+#endif
+        startTime = c; // Save start time
+        while (((c = _getCycleCount()) - startTime) < t)
+            ; // Wait high duration
+#ifdef ESP8266
+        GPIO_REG_WRITE(GPIO_OUT_W1TC_ADDRESS, pinMask); // Set low
+#else
+        gpio_set_level(pin, LOW);
+#endif
+        if (!(mask >>= 1)) { // Next bit/byte
+            if (p >= end)
+                break;
+            pix = *p++;
+            mask = 0x80;
+        }
+    }
+    while ((_getCycleCount() - startTime) < period)
+        ; // Wait for last bit
+}
+
+#endif // ESP8266