1.1.5.4.2 DRV_I2S_LRCLK_Sync Function

uint32_t DRV_I2S_LRCLK_Sync (const DRV_HANDLE handle, const uint32_t sample_rate);

Summary

Synchronize to the start of the I2S LRCLK (left/right clock) signal

Description

This function waits until low-tohigh transition of the I2S LRCLK (left/right clock) signal (high-low if Left-Jusitified format, this is determined by the PLIB). In the case where this signal is generated from a codec or other external source, this allows the caller to synchronize calls to the DMA with the LRCLK signal so the left/right channel association is valid.

Preconditions

None.

Returns

True - if the function was successful

False - if a timeout occurred (no transitions seen)

Remarks

None.

Example

_// myI2SHandle is the handle returned_ _// by the DRV_I2S_Open function._

DRV_I2S_LRCLK_Sync(myI2SHandle, 48000);

C

bool DRV_I2S_LRCLK_Sync(const DRV_HANDLE handle, const uint32_t sample_rate);