Function USART_Enable

bsp/efm32/Libraries/emlib/src/em_usart.c:487–501

/ * @brief * Enable/disable USART/UART receiver and/or transmitter. * * @details * Notice that this function does not do any configuration. Enabling should * normally be done after initialization is done (if not enabled as part * of init). * * @param[in] usart * Pointer to USART/UART peripheral register block. * * @param[in] enable * Select status for receiver/transmitter.

 *   Select status for receiver/transmitter.
 ******************************************************************************/
void USART_Enable(USART_TypeDef *usart, USART_Enable_TypeDef enable)
{
  uint32_t tmp;

  /* Make sure the module exists on the selected chip */
  EFM_ASSERT(USART_REF_VALID(usart)||(UART_REF_VALID(usart)));

  /* Disable as specified */
  tmp        = ~((uint32_t)(enable));
  tmp       &= _USART_CMD_RXEN_MASK | _USART_CMD_TXEN_MASK;
  usart->CMD = tmp << 1;

  /* Enable as specified */
  usart->CMD = (uint32_t)(enable);
}


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