Function USART_InitI2s

bsp/efm32/Libraries/emlib/src/em_usart.c:703–729

/ * @brief * Init USART for I2S mode. * * @details * This function will configure basic settings in order to operate in I2S * mode. * * Special control setup not covered by this function must be done after * using this function by direct modification of the CTRL and I2SCTRL * registers. * * Notice that pins used by the USART module must be properly configured * by the u

 *
 ******************************************************************************/
void USART_InitI2s(USART_TypeDef *usart, USART_InitI2s_TypeDef *init)
{
  USART_Enable_TypeDef enable;

  /* Make sure the module exists on the selected chip */
  EFM_ASSERT(USART_I2S_VALID(usart));

  /* Override the enable setting. */
  enable            = init->sync.enable;
  init->sync.enable = usartDisable;

  /* Init USART as a sync device. */
  USART_InitSync(usart, &init->sync);

  /* Configure and enable I2CCTRL register acording to selected mode. */
  usart->I2SCTRL = ((uint32_t)init->format) |
                   ((uint32_t)init->justify) |
                   (init->delay    ? USART_I2SCTRL_DELAY    : 0) |
                   (init->dmaSplit ? USART_I2SCTRL_DMASPLIT : 0) |
                   (init->mono     ? USART_I2SCTRL_MONO     : 0) |
                   (USART_I2SCTRL_EN);

  if (enable != usartDisable)
  {
    USART_Enable(usart, enable);
  }
}


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