Create README.md

Author: nimaltd

README.md

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+## NMEA library for STM32 LL
+*	Author:     Nima Askari
+*	WebSite:    https://www.github.com/NimaLTD
+*	Instagram:  https://www.instagram.com/github.NimaLTD
+*	LinkedIn:   https://www.linkedin.com/in/NimaLTD
+*	Youtube:    https://www.youtube.com/@nimaltd
+--------------------------------------------------------------------------------
+* http://github.com/nimaltd/ws281x
+-----------------------------------------------------------   
+* Enable SPI and DMA.
+* Set MSB and 3.3MHz of speed.
+* Create a struct.
+* Call Init.
+* Don't forget to use ws281x_update after set pixels.
+--------------------------------------------------------------------------------
+## RTOS example:
+```
+#include "ws281x.h"
+
+ws281x_t pixel;
+
+int main()
+{
+  ...  
+}
+
+void task_other(void const * argument)
+{
+  ws281x_init(&pixel, &hspi1, 216, ws281x_order_grb);
+  ws281x_test_slow(&pixel);
+  for(;;)
+  {
+    osDelay(1);
+  }
+}
+```