err_t
sio_open_low_level( u8_t devnr, serdev_t * dev )
{
err_t error = ERR_OK;
if( devnr == 0 )
{
/* Return value. */
dev->UARTx = UART0;
/* Reset the UART. */
UART_Init( dev->UARTx );
/* Configure the GPIO pints for the UART device. */
GPIO_Config( UART0_TX_PORT, 1 << UART0_TX_PIN, GPIO_AF_PP );
GPIO_Config( UART0_RX_PORT, 1 << UART0_RX_PIN, GPIO_IN_TRI_CMOS );
/* Configure the IEC for the UART interrupts. */
EIC_IRQChannelPriorityConfig( UART0_IRQ_CH, UART0_IRQ_PRIORITY );
EIC_IRQChannelConfig( UART0_IRQ_CH, ENABLE );
}
else if( devnr == 1 )
{
/* Return value. */
dev->UARTx = UART1;
/* Reset the UART. */
UART_Init( dev->UARTx );
/* Configure the GPIO pints for the UART device. */
GPIO_Config( UART1_TX_PORT, 1 << UART1_TX_PIN, GPIO_AF_PP );
GPIO_Config( UART1_RX_PORT, 1 << UART1_RX_PIN, GPIO_IN_TRI_TTL );
/* Configure the EIC for the UART interrupts. */
EIC_IRQChannelPriorityConfig( UART1_IRQ_CH, UART1_IRQ_PRIORITY );
EIC_IRQChannelConfig( UART1_IRQ_CH, ENABLE );
}
else
{
error = ERR_IF;
}
return error;
}
static void prvSetupTimerInterrupt( void )
{
/* Set the watchdog up to generate a periodic tick. */
WDG_ECITConfig( DISABLE );
WDG_CntOnOffConfig( DISABLE );
WDG_PeriodValueConfig( portMICROS_PER_SECOND / configTICK_RATE_HZ );
/* Setup the tick interrupt in the EIC. */
EIC_IRQChannelPriorityConfig( WDG_IRQChannel, 1 );
EIC_IRQChannelConfig( WDG_IRQChannel, ENABLE );
EIC_IRQConfig( ENABLE );
WDG_ECITConfig( ENABLE );
/* Start the timer - interrupts are actually disabled at this point so
it is safe to do this here. */
WDG_CntOnOffConfig( ENABLE );
}
/*
* See the serial2.h header file.
*/
xComPortHandle xSerialPortInitMinimal( unsigned long ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
{
xComPortHandle xReturn;
/* Create the queues used to hold Rx and Tx characters. */
xRxedChars = xQueueCreate( uxQueueLength, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
xCharsForTx = xQueueCreate( uxQueueLength + 1, ( unsigned portBASE_TYPE ) sizeof( signed char ) );
/* If the queues were created correctly then setup the serial port
hardware. */
if( ( xRxedChars != serINVALID_QUEUE ) && ( xCharsForTx != serINVALID_QUEUE ) )
{
portENTER_CRITICAL();
{
/* Setup the UART port pins. */
GPIO_Config( GPIO0, UART0_Tx_Pin, GPIO_AF_PP );
GPIO_Config( GPIO0, UART0_Rx_Pin, GPIO_IN_TRI_CMOS );
/* Configure the UART. */
UART_OnOffConfig( UART0, ENABLE );
UART_FifoConfig( UART0, DISABLE );
UART_FifoReset( UART0, UART_RxFIFO );
UART_FifoReset( UART0, UART_TxFIFO );
UART_LoopBackConfig(UART0, DISABLE );
UART_Config( UART0, ulWantedBaud, UART_NO_PARITY, UART_1_StopBits, UARTM_8D );
UART_RxConfig( UART0, ENABLE );
/* Configure the IEC for the UART interrupts. */
EIC_IRQChannelPriorityConfig( UART0_IRQChannel, 1 );
EIC_IRQChannelConfig( UART0_IRQChannel, ENABLE );
EIC_IRQConfig( ENABLE );
UART_ItConfig( UART0, UART_RxBufFull, ENABLE );
}
portEXIT_CRITICAL();
}
else
{
xReturn = ( xComPortHandle ) 0;
}
/* This demo file only supports a single port but we have to return
something to comply with the standard demo header file. */
return xReturn;
}
BOOL
xMBPortSerialInit( UCHAR ucPort, ULONG ulBaudRate, UCHAR ucDataBits, eMBParity eParity )
{
BOOL xResult = TRUE;
UARTParity_TypeDef eUARTParity;
UARTMode_TypeDef eUARTMode;
(void)ucPort;
switch ( eParity )
{
case MB_PAR_EVEN:
eUARTParity = UART_EVEN_PARITY;
break;
case MB_PAR_ODD:
eUARTParity = UART_ODD_PARITY;
break;
case MB_PAR_NONE:
eUARTParity = UART_NO_PARITY;
break;
}
switch ( ucDataBits )
{
case 7:
if( eParity == MB_PAR_NONE )
{
/* not supported by our hardware. */
xResult = FALSE;
}
else
{
eUARTMode = UARTM_7D_P;
}
break;
case 8:
if( eParity == MB_PAR_NONE )
{
eUARTMode = UARTM_8D;
}
else
{
eUARTMode = UARTM_8D_P;
}
break;
default:
xResult = FALSE;
}
if( xResult != FALSE )
{
/* Setup the UART port pins. */
GPIO_Config( MB_UART_TX_PORT, 1 << MB_UART_TX_PIN, GPIO_AF_PP );
GPIO_Config( MB_UART_RX_PORT, 1 << MB_UART_RX_PIN, GPIO_IN_TRI_CMOS );
/* Configure the UART. */
UART_OnOffConfig( MB_UART_DEV, ENABLE );
UART_FifoConfig( MB_UART_DEV, DISABLE );
UART_FifoReset( MB_UART_DEV, UART_RxFIFO );
UART_FifoReset( MB_UART_DEV, UART_TxFIFO );
UART_LoopBackConfig( MB_UART_DEV, DISABLE );
UART_Config( MB_UART_DEV, ulBaudRate, eUARTParity, UART_1_StopBits,
eUARTMode );
UART_RxConfig( UART0, ENABLE );
vMBPortSerialEnable( FALSE, FALSE );
/* Configure the IEC for the UART interrupts. */
EIC_IRQChannelPriorityConfig( MB_UART_IRQ_CH, MB_IRQ_PRIORITY );
EIC_IRQChannelConfig( MB_UART_IRQ_CH, ENABLE );
}
return xResult;
}
