/*******************************************************************************
* Function Name: UART_Stop
****************************************************************************//**
*
* Disables the UART component: disable the hardware and internal
* interrupt. It also disables all TX interrupt sources so as not to cause an
* unexpected interrupt trigger because after the component is enabled, the
* TX FIFO is empty.
* Refer to the function UART_Enable() for the interrupt
* configuration details.
* This function disables the SCB component without checking to see if
* communication is in progress. Before calling this function it may be
* necessary to check the status of communication to make sure communication
* is complete. If this is not done then communication could be stopped mid
* byte and corrupted data could result.
*
*******************************************************************************/
void UART_Stop(void)
{
#if (UART_SCB_IRQ_INTERNAL)
UART_DisableInt();
#endif /* (UART_SCB_IRQ_INTERNAL) */
/* Call Stop function specific to current operation mode */
UART_ScbModeStop();
/* Disable SCB IP */
UART_CTRL_REG &= (uint32) ~UART_CTRL_ENABLED;
/* Disable all TX interrupt sources so as not to cause an unexpected
* interrupt trigger after the component will be enabled because the
* TX FIFO is empty.
* For SCB IP v0, it is critical as it does not mask-out interrupt
* sources when it is disabled. This can cause a code lock-up in the
* interrupt handler because TX FIFO cannot be loaded after the block
* is disabled.
*/
UART_SetTxInterruptMode(UART_NO_INTR_SOURCES);
#if (UART_SCB_IRQ_INTERNAL)
UART_ClearPendingInt();
#endif /* (UART_SCB_IRQ_INTERNAL) */
}
/*******************************************************************************
* Function Name: UART_Stop
********************************************************************************
*
* Summary:
* Disables the SCB component.
*
* Parameters:
* None
*
* Return:
* None
*
*******************************************************************************/
void UART_Stop(void)
{
UART_CTRL_REG &= (uint32) ~UART_CTRL_ENABLED; /* Disable SCB block */
#if(UART_SCB_IRQ_INTERNAL)
UART_SCB_IRQ_ClearPending(); /* Clear pending interrupt */
#endif /* (UART_SCB_IRQ_INTERNAL) */
UART_ScbModeStop(); /* Calls scbMode specific Stop function */
}
