extern int32_t ciaaDriverUart_ioctl(ciaaDevices_deviceType const * const device, int32_t const request, void * param)
{
ciaaDriverUart_uartType * uart = device->layer;
uint32_t baseAddr = g_uartBaseAddr[uart->instance];
uint32_t uartSourceClock;
int32_t ret = -1;
if((device == ciaaDriverUartConst.devices[0]) ||
(device == ciaaDriverUartConst.devices[1]) ||
(device == ciaaDriverUartConst.devices[2]))
{
switch(request)
{
/* signal to start transmition */
case ciaaPOSIX_IOCTL_STARTTX:
ciaaDriverUart_txConfirmation(device);
break;
/* set serial port baudrate */
case ciaaPOSIX_IOCTL_SET_BAUDRATE:
uart->config.baudRate = (uint32_t)(param);
/* UART clock source is either system clock or bus clock depending on the instance */
uartSourceClock = CLOCK_SYS_GetUartFreq(uart->instance);
if (kStatus_UART_Success == UART_HAL_SetBaudRate(baseAddr, uartSourceClock, uart->config.baudRate)) {
ret = 0;
}
break;
}
}
return ret;
}
/*FUNCTION**********************************************************************
*
* Function Name : UART_DRV_Init
* Description : This function initializes a UART instance for operation.
* This function will initialize the run-time state structure to keep track of the on-going
* transfers, ungate the clock to the UART module, initialize the module
* to user defined settings and default settings, configure the IRQ state structure and enable
* the module-level interrupt to the core, and enable the UART module transmitter and receiver.
* The following is an example of how to set up the uart_state_t and the
* uart_user_config_t parameters and how to call the UART_DRV_Init function by passing
* in these parameters:
* uart_user_config_t uartConfig;
* uartConfig.baudRate = 9600;
* uartConfig.bitCountPerChar = kUart8BitsPerChar;
* uartConfig.parityMode = kUartParityDisabled;
* uartConfig.stopBitCount = kUartOneStopBit;
* uart_state_t uartState;
* UART_DRV_Init(instance, &uartState, &uartConfig);
*
*END**************************************************************************/
uart_status_t UART_DRV_Init(uint32_t instance, uart_state_t * uartStatePtr,
const uart_user_config_t * uartUserConfig)
{
assert(uartStatePtr && uartUserConfig);
assert(instance < HW_UART_INSTANCE_COUNT);
uint32_t baseAddr = g_uartBaseAddr[instance];
uint32_t uartSourceClock;
/* Exit if current instance is already initialized. */
if (g_uartStatePtr[instance])
{
return kStatus_UART_Initialized;
}
/* Clear the state structure for this instance. */
memset(uartStatePtr, 0, sizeof(uart_state_t));
/* Save runtime structure pointer.*/
g_uartStatePtr[instance] = uartStatePtr;
/* Un-gate UART module clock */
CLOCK_SYS_EnableUartClock(instance);
/* Initialize UART to a known state. */
UART_HAL_Init(baseAddr);
/* Create Semaphore for txIrq and rxIrq. */
OSA_SemaCreate(&uartStatePtr->txIrqSync, 0);
OSA_SemaCreate(&uartStatePtr->rxIrqSync, 0);
/* UART clock source is either system clock or bus clock depending on the instance */
uartSourceClock = CLOCK_SYS_GetUartFreq(instance);
/* Initialize UART baud rate, bit count, parity and stop bit. */
UART_HAL_SetBaudRate(baseAddr, uartSourceClock, uartUserConfig->baudRate);
UART_HAL_SetBitCountPerChar(baseAddr, uartUserConfig->bitCountPerChar);
UART_HAL_SetParityMode(baseAddr, uartUserConfig->parityMode);
#if FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
UART_HAL_SetStopBitCount(baseAddr, uartUserConfig->stopBitCount);
#endif
#if FSL_FEATURE_UART_HAS_FIFO
uint8_t fifoSize;
/* Obtain raw TX FIFO size bit setting */
fifoSize = UART_HAL_GetTxFifoSize(baseAddr);
/* Now calculate the number of data words per given FIFO size */
uartStatePtr->txFifoEntryCount = (fifoSize == 0 ? 1 : 0x1 << (fifoSize + 1));
/* Configure the TX FIFO watermark to be 1/2 of the total entry or 0 if entry count = 1
* A watermark setting of 0 for TX FIFO entry count of 1 means that TDRE will only interrupt
* when the TX buffer (the one entry in the TX FIFO) is empty. Otherwise, if we set the
* watermark to 1, the TDRE will always be set regardless if the TX buffer was empty or not
* as the spec says TDRE will set when the FIFO is at or below the configured watermark. */
if (uartStatePtr->txFifoEntryCount > 1)
{
UART_HAL_SetTxFifoWatermark(baseAddr, (uartStatePtr->txFifoEntryCount >> 1U));
}
/*!
* @brief Check send/receive polling functionality
*
*/
int main(void)
{
uint8_t rxChar = 0;
uint32_t byteCountBuff = 0;
uint32_t uartSourceClock = 0;
UART_Type * baseAddr = BOARD_DEBUG_UART_BASEADDR;
// Enable clock for PORTs, setup board clock source, config pin
hardware_init();
// Initialize the uart module with base address and config structure
CLOCK_SYS_EnableUartClock(BOARD_DEBUG_UART_INSTANCE);
// Get working uart clock
uartSourceClock = CLOCK_SYS_GetUartFreq(BOARD_DEBUG_UART_INSTANCE);
// Initialize UART baud rate, bit count, parity and stop bit
UART_HAL_SetBaudRate(baseAddr, uartSourceClock, BOARD_DEBUG_UART_BAUD);
UART_HAL_SetBitCountPerChar(baseAddr, kUart8BitsPerChar);
UART_HAL_SetParityMode(baseAddr, kUartParityDisabled);
#if FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
UART_HAL_SetStopBitCount(baseAddr, kUartOneStopBit);
#endif
// Enable the UART transmitter and receiver
UART_HAL_EnableTransmitter(baseAddr);
UART_HAL_EnableReceiver(baseAddr);
// Inform to start polling example
byteCountBuff = sizeof(buffStart);
UART_HAL_SendDataPolling(baseAddr, buffStart, byteCountBuff);
// Inform user of what to do
byteCountBuff = sizeof(bufferData1);
UART_HAL_SendDataPolling(baseAddr, bufferData1, byteCountBuff);
while(true)
{
// Wait to receive input data
if (kStatus_UART_Success == UART_HAL_ReceiveDataPolling(baseAddr, &rxChar, 1u))
{
// Send any character that received
UART_HAL_SendDataPolling(baseAddr, &rxChar, 1u);
}
}
}
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));
}
}
void serial_baud(serial_t *obj, int baudrate) {
uint32_t uart_addrs[] = UART_BASE_ADDRS;
UART_HAL_SetBaudRate(uart_addrs[obj->index], CLOCK_SYS_GetUartFreq(obj->index), (uint32_t)baudrate);
}
/* See fsl_debug_console.h for documentation of this function.*/
debug_console_status_t DbgConsole_Init(
uint32_t uartInstance, uint32_t baudRate, debug_console_device_type_t device)
{
if (s_debugConsole.type != kDebugConsoleNone)
{
return kStatus_DEBUGCONSOLE_Failed;
}
/* Set debug console to initialized to avoid duplicated init operation.*/
s_debugConsole.type = device;
s_debugConsole.instance = uartInstance;
/* Switch between different device. */
switch (device)
{
#if defined(HW_UART_INSTANCE_COUNT)
case kDebugConsoleUART:
{
uint32_t g_Addr[HW_UART_INSTANCE_COUNT] = UART_BASE_ADDRS;
uint32_t baseAddr = g_Addr[uartInstance];
uint32_t uartSourceClock;
s_debugConsole.baseAddr = baseAddr;
CLOCK_SYS_EnableUartClock(uartInstance);
/* UART clock source is either system or bus clock depending on instance */
uartSourceClock = CLOCK_SYS_GetUartFreq(uartInstance);
/* Initialize UART baud rate, bit count, parity and stop bit. */
UART_HAL_SetBaudRate(baseAddr, uartSourceClock, baudRate);
UART_HAL_SetBitCountPerChar(baseAddr, kUart8BitsPerChar);
UART_HAL_SetParityMode(baseAddr, kUartParityDisabled);
#if FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
UART_HAL_SetStopBitCount(baseAddr, kUartOneStopBit);
#endif
/* Finally, enable the UART transmitter and receiver*/
UART_HAL_EnableTransmitter(baseAddr);
UART_HAL_EnableReceiver(baseAddr);
/* Set the funciton pointer for send and receive for this kind of device. */
s_debugConsole.ops.Send = UART_HAL_SendDataPolling;
s_debugConsole.ops.rx_union.UART_Receive = UART_HAL_ReceiveDataPolling;
}
break;
#endif
#if defined(HW_UART0_INSTANCE_COUNT)
case kDebugConsoleLPSCI:
{
/* Declare config sturcuture to initialize a uart instance. */
uint32_t g_Addr[HW_UART0_INSTANCE_COUNT] = UART0_BASE_ADDRS;
uint32_t baseAddr = g_Addr[uartInstance];
uint32_t uartSourceClock;
s_debugConsole.baseAddr = baseAddr;
CLOCK_SYS_EnableLpsciClock(uartInstance);
uartSourceClock = CLOCK_SYS_GetLpsciFreq(uartInstance);
/* Initialize LPSCI baud rate, bit count, parity and stop bit. */
LPSCI_HAL_SetBaudRate(baseAddr, uartSourceClock, baudRate);
LPSCI_HAL_SetBitCountPerChar(baseAddr, kLpsci8BitsPerChar);
LPSCI_HAL_SetParityMode(baseAddr, kLpsciParityDisabled);
#if FSL_FEATURE_LPSCI_HAS_STOP_BIT_CONFIG_SUPPORT
LPSCI_HAL_SetStopBitCount(baseAddr, kLpsciOneStopBit);
#endif
/* Finally, enable the LPSCI transmitter and receiver*/
LPSCI_HAL_EnableTransmitter(baseAddr);
LPSCI_HAL_EnableReceiver(baseAddr);
/* Set the funciton pointer for send and receive for this kind of device. */
s_debugConsole.ops.Send = LPSCI_HAL_SendDataPolling;
s_debugConsole.ops.rx_union.UART0_Receive = LPSCI_HAL_ReceiveDataPolling;
}
break;
#endif
#if defined(HW_LPUART_INSTANCE_COUNT)
case kDebugConsoleLPUART:
{
uint32_t g_Addr[HW_LPUART_INSTANCE_COUNT] = LPUART_BASE_ADDRS;
uint32_t baseAddr = g_Addr[uartInstance];
uint32_t lpuartSourceClock;
s_debugConsole.baseAddr = baseAddr;
CLOCK_SYS_EnableLpuartClock(uartInstance);
/* LPUART clock source is either system or bus clock depending on instance */
lpuartSourceClock = CLOCK_SYS_GetLpuartFreq(uartInstance);
/* initialize the parameters of the LPUART config structure with desired data */
LPUART_HAL_SetBaudRate(baseAddr, lpuartSourceClock, baudRate);
LPUART_HAL_SetBitCountPerChar(baseAddr, kLpuart8BitsPerChar);
LPUART_HAL_SetParityMode(baseAddr, kLpuartParityDisabled);
LPUART_HAL_SetStopBitCount(baseAddr, kLpuartOneStopBit);
/* finally, enable the LPUART transmitter and receiver */
LPUART_HAL_SetTransmitterCmd(baseAddr, true);
LPUART_HAL_SetReceiverCmd(baseAddr, true);
/* Set the funciton pointer for send and receive for this kind of device. */
s_debugConsole.ops.Send = LPUART_HAL_SendDataPolling;
s_debugConsole.ops.rx_union.LPUART_Receive = LPUART_HAL_ReceiveDataPolling;
}
break;
#endif
/* If new device is requried as the low level device for debug console,
* Add the case branch and add the preprocessor macro to judge whether
* this kind of device exist in this SOC. */
default:
/* Device identified is invalid, return invalid device error code. */
return kStatus_DEBUGCONSOLE_InvalidDevice;
}
/* Configure the s_debugConsole structure only when the inti operation is successful. */
s_debugConsole.instance = uartInstance;
#if ((defined(__GNUC__)) && (!defined(FSL_RTOS_MQX))) && (!defined(__KSDK_STDLIB__))
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stdin, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
#endif
return kStatus_DEBUGCONSOLE_Success;
}
/*lint -save -e970 Disable MISRA rule (6.3) checking. */
int main(void)
/*lint -restore Enable MISRA rule (6.3) checking. */
{
/* Write your local variable definition here */
uint8_t rxChar = 0;
uint32_t byteCountBuff = 0;
uint32_t uartSourceClock = 0;
UART_Type * baseAddr = UART2_BASE; // was BOARD_DEBUG_UART_BASEADDR;
/*** Processor Expert internal initialization. DON'T REMOVE THIS CODE!!! ***/
PE_low_level_init();
/*** End of Processor Expert internal initialization. ***/
/* Write your code here */
/* For example: for(;;) { } */
// Initialize the uart module with base address and config structure
CLOCK_SYS_EnableUartClock(BOARD_DEBUG_UART_INSTANCE);
// Get working uart clock
uartSourceClock = CLOCK_SYS_GetUartFreq(BOARD_DEBUG_UART_INSTANCE);
// Initialize UART baud rate, bit count, parity and stop bit
UART_HAL_SetBaudRate(baseAddr, uartSourceClock, 9600); // was BOARD_DEBUG_UART_BAUD
UART_HAL_SetBitCountPerChar(baseAddr, kUart8BitsPerChar);
UART_HAL_SetParityMode(baseAddr, kUartParityDisabled);
#if FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
UART_HAL_SetStopBitCount(baseAddr, kUartOneStopBit);
#endif
// Enable the UART transmitter and receiver
UART_HAL_EnableTransmitter(baseAddr);
UART_HAL_EnableReceiver(baseAddr);
// Inform to start polling example
byteCountBuff = sizeof(buffStart);
UART_HAL_SendDataPolling(baseAddr, buffStart, byteCountBuff);
// Inform user of what to do
byteCountBuff = sizeof(bufferData1);
UART_HAL_SendDataPolling(baseAddr, bufferData1, byteCountBuff);
while(true)
{
// Wait to receive input data
if (kStatus_UART_Success == UART_HAL_ReceiveDataPolling(baseAddr, &rxChar, 1u))
{
// Send any character that received
UART_HAL_SendDataPolling(baseAddr, &rxChar, 1u);
}
}
/*** Don't write any code pass this line, or it will be deleted during code generation. ***/
/*** RTOS startup code. Macro PEX_RTOS_START is defined by the RTOS component. DON'T MODIFY THIS CODE!!! ***/
#ifdef PEX_RTOS_START
PEX_RTOS_START(); /* Startup of the selected RTOS. Macro is defined by the RTOS component. */
#endif
/*** End of RTOS startup code. ***/
/*** Processor Expert end of main routine. DON'T MODIFY THIS CODE!!! ***/
for(;;){}
/*** Processor Expert end of main routine. DON'T WRITE CODE BELOW!!! ***/
} /*** End of main routine. DO NOT MODIFY THIS TEXT!!! ***/
/*FUNCTION**********************************************************************
*
* Function Name : UART_DRV_DmaInit
* Description : This function initializes a UART instance for operation.
* This function will initialize the run-time state structure to keep track of
* the on-going transfers, ungate the clock to the UART module, initialize the
* module to user defined settings and default settings, configure UART DMA
* and enable the UART module transmitter and receiver.
* The following is an example of how to set up the uart_dma_state_t and the
* uart_user_config_t parameters and how to call the UART_DRV_DmaInit function
* by passing in these parameters:
* uart_user_config_t uartConfig;
* uartConfig.baudRate = 9600;
* uartConfig.bitCountPerChar = kUart8BitsPerChar;
* uartConfig.parityMode = kUartParityDisabled;
* uartConfig.stopBitCount = kUartOneStopBit;
* uart_dma_state_t uartDmaState;
* UART_DRV_DmaInit(instance, &uartDmaState, &uartConfig);
*
*END**************************************************************************/
uart_status_t UART_DRV_DmaInit(uint32_t instance,
uart_dma_state_t * uartDmaStatePtr,
const uart_dma_user_config_t * uartUserConfig)
{
assert(uartDmaStatePtr && uartUserConfig);
assert(g_uartBase[instance]);
assert(instance < UART_INSTANCE_COUNT);
/* This driver only support UART instances with separate DMA channels for
* both Tx and Rx.*/
assert(FSL_FEATURE_UART_HAS_SEPARATE_DMA_RX_TX_REQn(instance) == 1);
UART_Type * base = g_uartBase[instance];
uint32_t uartSourceClock = 0;
dma_request_source_t uartTxDmaRequest = kDmaRequestMux0Disable;
dma_request_source_t uartRxDmaRequest = kDmaRequestMux0Disable;
/* Exit if current instance is already initialized. */
if (g_uartStatePtr[instance])
{
return kStatus_UART_Initialized;
}
/* Clear the state structure for this instance. */
memset(uartDmaStatePtr, 0, sizeof(uart_dma_state_t));
/* Save runtime structure pointer.*/
g_uartStatePtr[instance] = uartDmaStatePtr;
/* Un-gate UART module clock */
CLOCK_SYS_EnableUartClock(instance);
/* Initialize UART to a known state. */
UART_HAL_Init(base);
/* Create Semaphore for txIrq and rxIrq. */
OSA_SemaCreate(&uartDmaStatePtr->txIrqSync, 0);
OSA_SemaCreate(&uartDmaStatePtr->rxIrqSync, 0);
/* UART clock source is either system or bus clock depending on instance */
uartSourceClock = CLOCK_SYS_GetUartFreq(instance);
/* Initialize UART baud rate, bit count, parity and stop bit. */
UART_HAL_SetBaudRate(base, uartSourceClock, uartUserConfig->baudRate);
UART_HAL_SetBitCountPerChar(base, uartUserConfig->bitCountPerChar);
UART_HAL_SetParityMode(base, uartUserConfig->parityMode);
#if FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
UART_HAL_SetStopBitCount(base, uartUserConfig->stopBitCount);
#endif
/* Enable DMA trigger when transmit data register empty,
* and receive data register full. */
UART_HAL_SetTxDmaCmd(base, true);
UART_HAL_SetRxDmaCmd(base, true);
switch (instance)
{
#if (FSL_FEATURE_UART_HAS_SEPARATE_DMA_RX_TX_REQn(0) == 1)
case 0:
uartRxDmaRequest = kDmaRequestMux0UART0Rx;
uartTxDmaRequest = kDmaRequestMux0UART0Tx;
break;
#endif
#if (FSL_FEATURE_UART_HAS_SEPARATE_DMA_RX_TX_REQn(1) == 1)
case 1:
uartRxDmaRequest = kDmaRequestMux0UART1Rx;
uartTxDmaRequest = kDmaRequestMux0UART1Tx;
break;
#endif
#if (FSL_FEATURE_UART_HAS_SEPARATE_DMA_RX_TX_REQn(2) == 1)
case 2:
uartRxDmaRequest = kDmaRequestMux0UART2Rx;
uartTxDmaRequest = kDmaRequestMux0UART2Tx;
break;
#endif
default :
break;
}
/* Request DMA channels for RX FIFO. */
DMA_DRV_RequestChannel(kDmaAnyChannel, uartRxDmaRequest,
&uartDmaStatePtr->dmaUartRx);
DMA_DRV_RegisterCallback(&uartDmaStatePtr->dmaUartRx,
UART_DRV_DmaRxCallback, (void *)instance);
/* Request DMA channels for TX FIFO. */
DMA_DRV_RequestChannel(kDmaAnyChannel, uartTxDmaRequest,
&uartDmaStatePtr->dmaUartTx);
DMA_DRV_RegisterCallback(&uartDmaStatePtr->dmaUartTx,
UART_DRV_DmaTxCallback, (void *)instance);
/* Finally, enable the UART transmitter and receiver*/
UART_HAL_EnableTransmitter(base);
UART_HAL_EnableReceiver(base);
return kStatus_UART_Success;
}
/* See fsl_debug_console.h for documentation of this function.*/
debug_console_status_t DbgConsole_Init(
uint32_t uartInstance, uint32_t baudRate, debug_console_device_type_t device)
{
if (s_debugConsole.type != kDebugConsoleNone)
{
return kStatus_DEBUGCONSOLE_Failed;
}
/* Set debug console to initialized to avoid duplicated init operation.*/
s_debugConsole.type = device;
s_debugConsole.instance = uartInstance;
/* Switch between different device. */
switch (device)
{
#if (defined(USB_INSTANCE_COUNT) && defined(BOARD_USE_VIRTUALCOM)) /*&& defined()*/
case kDebugConsoleUSBCDC:
{
VirtualCom_Init();
s_debugConsole.base = (void*)g_app_handle;
s_debugConsole.ops.tx_union.USB_Send = VirtualCom_SendDataBlocking;
s_debugConsole.ops.rx_union.USB_Receive = VirtualCom_ReceiveDataBlocking;
}
break;
#endif
#if defined(UART_INSTANCE_COUNT)
case kDebugConsoleUART:
{
UART_Type * g_Base[UART_INSTANCE_COUNT] = UART_BASE_PTRS;
UART_Type * base = g_Base[uartInstance];
uint32_t uartSourceClock;
s_debugConsole.base = base;
CLOCK_SYS_EnableUartClock(uartInstance);
/* UART clock source is either system or bus clock depending on instance */
uartSourceClock = CLOCK_SYS_GetUartFreq(uartInstance);
/* Initialize UART baud rate, bit count, parity and stop bit. */
UART_HAL_SetBaudRate(base, uartSourceClock, baudRate);
UART_HAL_SetBitCountPerChar(base, kUart8BitsPerChar);
UART_HAL_SetParityMode(base, kUartParityDisabled);
#if FSL_FEATURE_UART_HAS_STOP_BIT_CONFIG_SUPPORT
UART_HAL_SetStopBitCount(base, kUartOneStopBit);
#endif
/* Finally, enable the UART transmitter and receiver*/
UART_HAL_EnableTransmitter(base);
UART_HAL_EnableReceiver(base);
/* Set the funciton pointer for send and receive for this kind of device. */
s_debugConsole.ops.tx_union.UART_Send = UART_HAL_SendDataPolling;
s_debugConsole.ops.rx_union.UART_Receive = UART_HAL_ReceiveDataPolling;
}
break;
#endif
#if defined(UART0_INSTANCE_COUNT)
case kDebugConsoleLPSCI:
{
/* Declare config sturcuture to initialize a uart instance. */
UART0_Type * g_Base[UART0_INSTANCE_COUNT] = UART0_BASE_PTRS;
UART0_Type * base = g_Base[uartInstance];
uint32_t uartSourceClock;
s_debugConsole.base = base;
CLOCK_SYS_EnableLpsciClock(uartInstance);
uartSourceClock = CLOCK_SYS_GetLpsciFreq(uartInstance);
/* Initialize LPSCI baud rate, bit count, parity and stop bit. */
LPSCI_HAL_SetBaudRate(base, uartSourceClock, baudRate);
LPSCI_HAL_SetBitCountPerChar(base, kLpsci8BitsPerChar);
LPSCI_HAL_SetParityMode(base, kLpsciParityDisabled);
#if FSL_FEATURE_LPSCI_HAS_STOP_BIT_CONFIG_SUPPORT
LPSCI_HAL_SetStopBitCount(base, kLpsciOneStopBit);
#endif
/* Finally, enable the LPSCI transmitter and receiver*/
LPSCI_HAL_EnableTransmitter(base);
LPSCI_HAL_EnableReceiver(base);
/* Set the funciton pointer for send and receive for this kind of device. */
s_debugConsole.ops.tx_union.UART0_Send = LPSCI_HAL_SendDataPolling;
s_debugConsole.ops.rx_union.UART0_Receive = LPSCI_HAL_ReceiveDataPolling;
}
break;
#endif
#if defined(LPUART_INSTANCE_COUNT)
case kDebugConsoleLPUART:
{
LPUART_Type* g_Base[LPUART_INSTANCE_COUNT] = LPUART_BASE_PTRS;
LPUART_Type* base = g_Base[uartInstance];
uint32_t lpuartSourceClock;
s_debugConsole.base = base;
CLOCK_SYS_EnableLpuartClock(uartInstance);
/* LPUART clock source is either system or bus clock depending on instance */
lpuartSourceClock = CLOCK_SYS_GetLpuartFreq(uartInstance);
/* initialize the parameters of the LPUART config structure with desired data */
LPUART_HAL_SetBaudRate(base, lpuartSourceClock, baudRate);
LPUART_HAL_SetBitCountPerChar(base, kLpuart8BitsPerChar);
LPUART_HAL_SetParityMode(base, kLpuartParityDisabled);
LPUART_HAL_SetStopBitCount(base, kLpuartOneStopBit);
/* finally, enable the LPUART transmitter and receiver */
LPUART_HAL_SetTransmitterCmd(base, true);
LPUART_HAL_SetReceiverCmd(base, true);
/* Set the funciton pointer for send and receive for this kind of device. */
s_debugConsole.ops.tx_union.LPUART_Send = LPUART_HAL_SendDataPolling;
s_debugConsole.ops.rx_union.LPUART_Receive = LPUART_HAL_ReceiveDataPolling;
}
break;
#endif
/* If new device is requried as the low level device for debug console,
* Add the case branch and add the preprocessor macro to judge whether
* this kind of device exist in this SOC. */
default:
/* Device identified is invalid, return invalid device error code. */
return kStatus_DEBUGCONSOLE_InvalidDevice;
}
/* Configure the s_debugConsole structure only when the inti operation is successful. */
s_debugConsole.instance = uartInstance;
return kStatus_DEBUGCONSOLE_Success;
}