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i2s_dma: Implementation of I2S + DMA wrapper library

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sheinz 2016-08-16 10:10:35 +03:00
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# Wrapper around hardware I2S and DMA subsystems of ESP8266
ESP8266 has hardware I2S bus support. I2S is a serial bus interface used for
connecting digital audio devices. But can be used to produce sequence of pulses
with reliable timings for example to control a strip of WS2812 leds.
This library is just a wrapper around tricky I2S initialization.
It sets necessary registers, enables I2S clock etc.