/*FUNCTION**********************************************************************
*
* Function Name : LPSCI_DRV_Deinit
* Description : This function shuts down the LPSCI by disabling interrupts
* and the transmitter/receiver.
*
*END**************************************************************************/
void LPSCI_DRV_Deinit(uint32_t instance)
{
assert(instance < HW_UART0_INSTANCE_COUNT);
uint32_t baseAddr = g_lpsciBaseAddr[instance];
lpsci_state_t * lpsciState = (lpsci_state_t *)g_lpsciStatePtr[instance];
/* Wait until the data is completely shifted out of shift register */
while(!(LPSCI_HAL_IsTxComplete(baseAddr))) { }
/* Disable the interrupt */
INT_SYS_DisableIRQ(g_lpsciRxTxIrqId[instance]);
/* Disable TX and RX */
LPSCI_HAL_DisableTransmitter(baseAddr);
LPSCI_HAL_DisableReceiver(baseAddr);
/* Destroy TX and RX sema. */
OSA_SemaDestroy(&lpsciState->txIrqSync);
OSA_SemaDestroy(&lpsciState->rxIrqSync);
/* Cleared state pointer. */
g_lpsciStatePtr[instance] = NULL;
/* Gate LPSCI module clock */
CLOCK_SYS_DisableUartClock(instance);
}
/*FUNCTION**********************************************************************
*
* Function Name : LPSCI_DRV_DmaDeinit
* Description : This function shuts down the LPSCI by disabling LPSCI DMA and
* the transmitter/receiver.
*
*END**************************************************************************/
lpsci_status_t LPSCI_DRV_DmaDeinit(uint32_t instance)
{
assert(instance < UART0_INSTANCE_COUNT);
/* Exit if current instance is already de-initialized or is gated.*/
if ((!g_lpsciStatePtr[instance]) || (!CLOCK_SYS_GetLpsciGateCmd(instance)))
{
return kStatus_LPSCI_Fail;
}
UART0_Type * base = g_lpsciBase[instance];
lpsci_dma_state_t * lpsciDmaState = (lpsci_dma_state_t *)g_lpsciStatePtr[instance];
/* Wait until the data is completely shifted out of shift register */
while(!(UART0_BRD_S1_TC(base))) { }
LPSCI_HAL_SetTxDmaCmd(base, false);
LPSCI_HAL_SetRxDmaCmd(base, false);
/* Release DMA channel. */
DMA_DRV_FreeChannel(&lpsciDmaState->dmaLpsciRx);
DMA_DRV_FreeChannel(&lpsciDmaState->dmaLpsciTx);
/* Disable TX and RX */
LPSCI_HAL_DisableTransmitter(base);
LPSCI_HAL_DisableReceiver(base);
/* Destroy TX and RX sema. */
OSA_SemaDestroy(&lpsciDmaState->txIrqSync);
OSA_SemaDestroy(&lpsciDmaState->rxIrqSync);
/* Cleared state pointer. */
g_lpsciStatePtr[instance] = NULL;
/* Gate LPSCI module clock */
CLOCK_SYS_DisableLpsciClock(instance);
return kStatus_LPSCI_Success;
}
