/*******************************************************************************
* Function Name: UART_1_SpiUartDisableIntTx
****************************************************************************//**
*
* Disables TX interrupt sources.
*
* \return
* Returns TX interrupt sources enabled before function call.
*
*******************************************************************************/
uint32 UART_1_SpiUartDisableIntTx(void)
{
uint32 intSourceMask;
intSourceMask = UART_1_GetTxInterruptMode();
UART_1_SetTxInterruptMode(UART_1_NO_INTR_SOURCES);
return (intSourceMask);
}
void main(){
UART_1_Start();
/* choose when we receive interrupts from tx and rx */
UART_1_SetTxInterruptMode(UART_1_TX_STS_COMPLETE);
UART_1_SetRxInterruptMode(UART_1_RX_STS_FIFO_NOTEMPTY);
CyGlobalIntEnable;
UART_1_ClearTxBuffer();
UART_1_ClearRxBuffer();
LCD_Char_1_Start();
LCD_Char_1_Position(0,0);
/* initialize our source data to index */
int j;
for(j = 0; j < DATA_SIZE; ++j){
sourceData[j] = j;
}
/* enable our interrupt routines */
isr_1_StartEx(tx_int);
isr_2_StartEx(rx_int);
/* idle loop until we finish our transmission */
while(!rx_done){}
int k;
int errors = 0;
/* data validation */
for(k = 0; k < DATA_SIZE; ++k)
if(sourceData[k] != receiveData[k]) ++errors;
/* print errors to lcd */
LCD_Char_1_PrintString("errors: ");
LCD_Char_1_PrintNumber(errors);
LCD_Char_1_Position(1,0);
LCD_Char_1_PrintString("tx:");
LCD_Char_1_PrintNumber(tx_cnt);
LCD_Char_1_PrintString(" rx:");
LCD_Char_1_PrintNumber(rx_cnt);
for(;;){
}
}
xComPortHandle xSerialPortInitMinimal( unsigned long ulWantedBaud, unsigned portBASE_TYPE uxQueueLength )
{
/* Configure Rx. */
xSerialRxQueue = xQueueCreate( uxQueueLength, sizeof( signed char ) );
isr_UART1_RX_BYTE_RECEIVED_ClearPending();
isr_UART1_RX_BYTE_RECEIVED_StartEx(vUartRxISR);
/* Configure Tx */
xSerialTxQueue = xQueueCreate( uxQueueLength, sizeof( signed char ) );
isr_UART1_TX_BYTE_COMPLETE_ClearPending() ;
isr_UART1_TX_BYTE_COMPLETE_StartEx(vUartTxISR);
/* Clear the interrupt modes for the Tx for the time being. */
UART_1_SetTxInterruptMode( 0 );
/* Both configured successfully. */
return ( xComPortHandle )( xSerialTxQueue && xSerialRxQueue );
}
signed portBASE_TYPE xSerialPutChar( xComPortHandle pxPort, signed char cOutChar, TickType_t xBlockTime )
{
portBASE_TYPE xReturn = pdFALSE;
/* The ISR is processing characters is so just add to the end of the queue. */
if( pdTRUE == xQueueSend( xSerialTxQueue, &cOutChar, xBlockTime ) )
{
xReturn = pdTRUE;
}
else
{
/* The queue is probably full. */
xReturn = pdFALSE;
}
/* Make sure that the interrupt will fire in the case where:
Currently sending so the Tx Complete will fire.
Not sending so the Empty will fire. */
taskENTER_CRITICAL();
UART_1_SetTxInterruptMode( UART_1_TX_STS_COMPLETE | UART_1_TX_STS_FIFO_EMPTY );
taskEXIT_CRITICAL();
return xReturn;
}
