// Called from TX interrupt. Read from transmit message queue and
// output byte by byte to the transmit buffer
void receiveDataFromISR() {
BaseType_t xTaskWokenByReceive = pdFALSE;
char readChar;
// Temporarily disable the transmit interrupt
PLIB_INT_SourceDisable(INT_ID_0, INT_SOURCE_USART_1_TRANSMIT);
// While the queue has available messages, read bytes and transmit
while (uxQueueMessagesWaitingFromISR(sendData.transmitQ_CD) != 0){
while (xQueueReceiveFromISR(sendData.transmitQ_CD, (void *) &readChar, &xTaskWokenByReceive) )
{
// A character was received. Transmit the character now.
if (sendData.testCount % BREAK_MESSAGE_DIV != 2) // Error simulation constant (missing byte)
PLIB_USART_TransmitterByteSend(USART_ID_1, readChar);
// Duplicate data error simulation constant
if (sendData.testCount % ADD_MESSAGE_DIV == 1)
PLIB_USART_TransmitterByteSend(USART_ID_1, readChar);
// If removing the character from the queue woke the task that was
// posting onto the queue cTaskWokenByReceive will have been set to
// pdTRUE. No matter how many times this loop iterates only one
// task will be woken.
sendData.testCount++;
}
}
}
void PWM2_SetValues(
TMR_PRESCALE pwmPreScale
, int pwmCycle
, int pwmStart1
, int pwmStop1
, int pwmStart2
, int pwmStop2
) {
if ((pwmPreScale == TMR_PRESCALE_VALUE_1) & (pwmCycle < 400)) {
PWM2_doInt = false;
}
if ((pwmPreScale != PWM2_PreScale) | !PWM2_doInt) {
// total update
// Disable Interrupt / Clear Flag
PLIB_INT_SourceDisable(APP_INT_ID, APP_PWM2_TMR_INT_SOURCE);
PLIB_INT_SourceFlagClear(APP_INT_ID, APP_PWM2_TMR_INT_SOURCE);
// Stop the timer
PLIB_TMR_Stop(APP_PWM2_TMR_ID);
// Disable OC's
PLIB_OC_Disable(APP_PWM2_OC1_ID);
#ifdef APP_PWM2_OC2_ID
PLIB_OC_Disable(APP_PWM2_OC2_ID);
#endif // ifdef APP_PWM2_OC2_ID
PWM2_PreScale = pwmPreScale;
PWM2_Cycle = pwmCycle;
PWM2_Start1 = pwmStart1;
PWM2_Stop1 = pwmStop1;
PWM2_Start2 = pwmStart2;
PWM2_Stop2 = pwmStop2;
// Set the prescaler, and set the clock source as internal
PLIB_TMR_PrescaleSelect(APP_PWM2_TMR_ID, pwmPreScale);
// Clear the timer
PLIB_TMR_Counter16BitClear(APP_PWM2_TMR_ID);
// Load the period register
PLIB_TMR_Period16BitSet(APP_PWM2_TMR_ID, pwmCycle);
// OC1 Init
// Set buffer(primary compare) value
PLIB_OC_Buffer16BitSet(APP_PWM2_OC1_ID, pwmStart1);
// Set pulse width(secondary compare) value
PLIB_OC_PulseWidth16BitSet(APP_PWM2_OC1_ID, pwmStop1);
#ifdef APP_PWM2_OC2_ID
// OC2 Init
// Set buffer(primary compare) value
PLIB_OC_Buffer16BitSet(APP_PWM2_OC2_ID, pwmStart2);
// Set pulse width(secondary compare) value
PLIB_OC_PulseWidth16BitSet(APP_PWM2_OC2_ID, pwmStop2);
#endif // ifdef APP_PWM2_OC2_ID
// Enable OC 1
PLIB_OC_Enable(APP_PWM2_OC1_ID);
#ifdef APP_PWM2_OC2_ID
// Enable OC 2
PLIB_OC_Enable(APP_PWM2_OC2_ID);
#endif // ifdef APP_PWM2_OC2_ID
if ((PWM2_PreScale == TMR_PRESCALE_VALUE_1) & (PWM2_Cycle < 400)) {
PWM2_doInt = false;
} else {
PWM2_doInt = true;
// Reenable Interrupt
PLIB_INT_SourceEnable(APP_INT_ID, APP_PWM2_TMR_INT_SOURCE);
}
// Start the timer
PLIB_TMR_Start(APP_PWM2_TMR_ID);
} else {
// continuos update
PWM2_Cycle = pwmCycle;
PWM2_Start1 = pwmStart1;
PWM2_Stop1 = pwmStop1;
PWM2_Start2 = pwmStart2;
PWM2_Stop2 = pwmStop2;
}
}
