void vApplicationTickHook( void )
{
UBaseType_t uxReceivedNumber;
BaseType_t xIndex, xCoRoutineWoken;
/* Is it time to talk to the 'hook' co-routines again? */
uxCallCounter++;
if( uxCallCounter >= hookTICK_CALLS_BEFORE_POST )
{
uxCallCounter = 0;
for( xIndex = 0; xIndex < hookNUM_HOOK_CO_ROUTINES; xIndex++ )
{
xCoRoutineWoken = pdFALSE;
if( crQUEUE_RECEIVE_FROM_ISR( xHookRxQueues[ xIndex ], &uxReceivedNumber, &xCoRoutineWoken ) != pdPASS )
{
/* There is no reason why we would not expect the queue to
contain a value. */
xCoRoutineErrorDetected = pdTRUE;
}
else
{
/* Each queue used to receive data from the 'hook' co-routines
should contain the number we last posted to the same co-routine. */
if( uxReceivedNumber != uxNumberToPost )
{
xCoRoutineErrorDetected = pdTRUE;
}
/* Nothing should be blocked waiting to post to the queue. */
if( xCoRoutineWoken != pdFALSE )
{
xCoRoutineErrorDetected = pdTRUE;
}
}
}
/* Start the next cycle by posting the next number onto each Tx queue. */
uxNumberToPost++;
for( xIndex = 0; xIndex < hookNUM_HOOK_CO_ROUTINES; xIndex++ )
{
if( crQUEUE_SEND_FROM_ISR( xHookTxQueues[ xIndex ], &uxNumberToPost, pdFALSE ) != pdTRUE )
{
/* Posting to the queue should have woken the co-routine that
was blocked on the queue. */
xCoRoutineErrorDetected = pdTRUE;
}
}
}
}
void vUART_ISR(void)
{
unsigned long ulStatus;
char cRxedChar;
portBASE_TYPE xTaskWokenByPost = pdFALSE;
/* What caused the interrupt. */
ulStatus = UARTIntStatus( UART0_BASE, pdTRUE );
/* Clear the interrupt. */
UARTIntClear( UART0_BASE, ulStatus );
/* Was an Rx interrpt pending? */
if( ulStatus & UART_INT_RX )
{
if( ( HWREG(UART0_BASE + UART_O_FR ) & UART_FR_RXFF ) )
{
/* Get the char from the buffer and post it onto the queue of
Rxed chars. Posting the character should wake the task that is
blocked on the queue waiting for characters. */
cRxedChar = ( char ) HWREG( UART0_BASE + UART_O_DR );
xTaskWokenByPost = crQUEUE_SEND_FROM_ISR( xCommsQueue, &cRxedChar, xTaskWokenByPost );
}
}
/* Was a Tx interrupt pending? */
if( ulStatus & UART_INT_TX )
{
/* Send the next character in the string. We are not using the FIFO. */
if( cNextChar <= mainLAST_TX_CHAR )
{
if( !( HWREG( UART0_BASE + UART_O_FR ) & UART_FR_TXFF ) )
{
HWREG( UART0_BASE + UART_O_DR ) = cNextChar;
}
cNextChar++;
}
}
if( xTaskWokenByPost )
{
/* We are posting to a co-routine rather than a task so don't bother
causing a task switch. */
}
}
void vI2C_ISR(void)
{
static portTickType xReading;
/* Clear the interrupt. */
I2CMasterIntClear( I2C_MASTER_BASE );
/* Determine what to do based on the current uxState. */
switch (uxState)
{
case mainI2C_IDLE:
break;
case mainI2C_READ_1: /* Read ADC result high byte. */
xReading = I2CMasterDataGet( I2C_MASTER_BASE );
xReading <<= 8;
/* Continue the burst read. */
I2CMasterControl( I2C_MASTER_BASE, I2C_MASTER_CMD_BURST_RECEIVE_CONT );
uxState = mainI2C_READ_2;
break;
case mainI2C_READ_2: /* Read ADC result low byte. */
xReading |= I2CMasterDataGet( I2C_MASTER_BASE );
/* Finish the burst read. */
I2CMasterControl( I2C_MASTER_BASE, I2C_MASTER_CMD_BURST_RECEIVE_FINISH );
uxState = mainI2C_READ_DONE;
break;
case mainI2C_READ_DONE: /* Complete. */
I2CMasterDataGet( I2C_MASTER_BASE );
uxState = mainI2C_IDLE;
/* Send the result to the co-routine. */
crQUEUE_SEND_FROM_ISR( xADCQueue, &xReading, pdFALSE );
break;
}
}