/*************************************************************************
* Function Name: UART1_init
* Parameters: none
* Return: none
* Description: UART port configuration
*************************************************************************/
void UART1_init(void)
{
UART_HAL_DisableTransmitter(UART1_BASE_PTR);
UART_HAL_DisableReceiver(UART1_BASE_PTR);/* disable uart operation */
UART_HAL_SetStopBitCount(UART1_BASE_PTR, kUartOneStopBit);
UART_HAL_SetBaudRate(UART1_BASE_PTR, BUS_CLOCK, UART_BAUDRATE);
//Configures the number of bits per character in the UART controller./
UART_HAL_SetBitCountPerChar(UART1_BASE_PTR, kUart8BitsPerChar);/*!< 8-bit data characters */
UART_HAL_SetParityMode(UART1_BASE_PTR, kUartParityDisabled);/*!< parity disabled */
UART_HAL_SetWaitModeOperation(UART1_BASE_PTR, kUartOperates);/*!< UART continues to operate normally */
UART_HAL_SetLoopCmd(UART1_BASE_PTR, false);/*£¡<Disable The UART loopback mode configuration */
UART_HAL_SetReceiverSource(UART1_BASE_PTR, kUartLoopBack);/*!< Internal loop back mode. */
UART_HAL_SetReceiverWakeupMethod(UART1_BASE_PTR, kUartIdleLineWake);/*!< The idle-line wakes UART receiver from standby */
UART_BWR_C1_ILT(UART1_BASE_PTR, 0);/*!<Idle character bit count starts after start bit.*/
UART_HAL_EnableTransmitter(UART1_BASE_PTR);
UART_HAL_EnableReceiver(UART1_BASE_PTR);/* Enable uart operation */
#if defined(KV10Z7_SERIES)
// Configure UART1 port pins: PTD0, PTD1 - ALT5
PORT_HAL_SetMuxMode(PORTD_BASE_PTR, 0, kPortMuxAlt5);
PORT_HAL_SetMuxMode(PORTD_BASE_PTR, 1, kPortMuxAlt5);
#elif (defined(KV10Z1287_SERIES) || defined(KV11Z7_SERIES))
// Configure UART1 port pins: PTE0, PTE1 - ALT3
PORT_HAL_SetMuxMode(PORTE_BASE_PTR, 0, kPortMuxAlt3);
PORT_HAL_SetMuxMode(PORTE_BASE_PTR, 1, kPortMuxAlt3);
#endif
}
/*FUNCTION**********************************************************************
*
* Function Name : UART_DRV_DmaDeinit
* Description : This function shuts down the UART by disabling UART DMA and
* the transmitter/receiver.
*
*END**************************************************************************/
uart_status_t UART_DRV_DmaDeinit(uint32_t instance)
{
assert(instance < UART_INSTANCE_COUNT);
assert(g_uartBase[instance]);
/* Exit if current instance is already de-initialized or is gated.*/
if ((!g_uartStatePtr[instance]) || (!CLOCK_SYS_GetUartGateCmd(instance)))
{
return kStatus_UART_Fail;
}
UART_Type * base = g_uartBase[instance];
uart_dma_state_t * uartDmaState = (uart_dma_state_t *)g_uartStatePtr[instance];
/* Wait until the data is completely shifted out of shift register */
while(!(UART_BRD_S1_TC(base))) { }
UART_HAL_SetTxDmaCmd(base, false);
UART_HAL_SetRxDmaCmd(base, false);
/* Release DMA channel. */
DMA_DRV_FreeChannel(&uartDmaState->dmaUartRx);
DMA_DRV_FreeChannel(&uartDmaState->dmaUartTx);
/* Disable TX and RX */
UART_HAL_DisableTransmitter(base);
UART_HAL_DisableReceiver(base);
/* Destroy TX and RX sema. */
OSA_SemaDestroy(&uartDmaState->txIrqSync);
OSA_SemaDestroy(&uartDmaState->rxIrqSync);
/* Cleared state pointer. */
g_uartStatePtr[instance] = NULL;
/* Gate UART module clock */
CLOCK_SYS_DisableUartClock(instance);
return kStatus_UART_Success;
}
void serial_init(serial_t *obj, PinName tx, PinName rx) {
uint32_t uart_tx = pinmap_peripheral(tx, PinMap_UART_TX);
uint32_t uart_rx = pinmap_peripheral(rx, PinMap_UART_RX);
obj->index = pinmap_merge(uart_tx, uart_rx);
MBED_ASSERT((int)obj->index != NC);
uint32_t uartSourceClock = CLOCK_SYS_GetUartFreq(obj->index);
CLOCK_SYS_EnableUartClock(obj->index);
uint32_t uart_addrs[] = UART_BASE_ADDRS;
UART_HAL_Init(uart_addrs[obj->index]);
UART_HAL_SetBaudRate(uart_addrs[obj->index], uartSourceClock, 9600);
UART_HAL_SetParityMode(uart_addrs[obj->index], kUartParityDisabled);
#if FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
UART_HAL_SetStopBitCount(uart_addrs[obj->index], kUartOneStopBit);
#endif
UART_HAL_SetBitCountPerChar(uart_addrs[obj->index], kUart8BitsPerChar);
UART_HAL_DisableTransmitter(uart_addrs[obj->index]);
UART_HAL_DisableReceiver(uart_addrs[obj->index]);
pinmap_pinout(tx, PinMap_UART_TX);
pinmap_pinout(rx, PinMap_UART_RX);
if (tx != NC) {
UART_HAL_FlushTxFifo(uart_addrs[obj->index]);
UART_HAL_EnableTransmitter(uart_addrs[obj->index]);
pin_mode(tx, PullUp);
}
if (rx != NC) {
UART_HAL_EnableReceiver(uart_addrs[obj->index]);
pin_mode(rx, PullUp);
}
if (obj->index == STDIO_UART) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}
}
