// copy from hardware RX FIFO to software RX FIFO
// stop when hardware RX FIFO is empty or software RX FIFO is full
void static copyHardwareToSoftware(void){
char letter;
while(((UART0_FR_R&UART_FR_RXFE) == 0) && (RxFifo_Size() < (FIFOSIZE - 1))){
letter = UART0_DR_R;
RxFifo_Put(letter);
}
}
void Timer0A_Handler(void){
unsigned long returnaddress;
unsigned char i;
static char periodShift = 1;
GPIO_PORTF2 = 0x04; // debuging profile
TIMER0_ICR_R = TIMER_ICR_TATOCINT;// acknowledge timer0A timeout
if(INTVARIATION != 0){ // set time of next interrupt if needed
TIMER0_TAILR_R = TIMER0_TAILR_R + periodShift;
// check upper bound
if(((TIMER0_TAILR_R + periodShift) > (INTPERIOD + INTVARIATION - 1)) ||
// check lower bound
((TIMER0_TAILR_R + periodShift) < (INTPERIOD - INTVARIATION - 1))){
periodShift = -periodShift; // start counting in other direction
}
}
if(EnterGet){ // Put has interrupted Get
EnteredCount = EnteredCount + 1;
}
for(i=0; i<=BackCounter; i=i+1){
if(RxFifo_Put(BackData)){
BackData = BackData + 1; // sequence is 0,1,2,3,...,254,255,0,1,...
} // ignore full FIFO
}
BackCounter = BackCounter + 1;
if(BackCounter == 10){
BackCounter = 0; // 0 to 9
}
returnaddress = Who();
if((returnaddress < (unsigned long)&RxFifo_Get) || (returnaddress >= (unsigned long)&RxFifo_Size)){
returnaddress = (unsigned long)&RxFifo_Size;
}
LineHistogram[(returnaddress - (unsigned long)&RxFifo_Get)/2]++;
GPIO_PORTF2 = 0x00;
}
// RDRF set on new receive data
// TDRE set on an empty transmit data register
interrupt 21 void SCI1Handler(void){ char data;
//PTT_PTT3 = 1;
if(SCI1SR1 & RDRF){
#if HISTOGRAM
RxHistogram[1][RxFifo_Size(1)]++;
#endif
RxFifo_Put(1,SCI1DRL); // clears RDRF
}
if((SCI1CR2&0x80)&&(SCI1SR1&TDRE)){
if(TxFifo_Get(1,&data)){
SCI1DRL = data; // clears TDRE
}
else{
SCI1CR2 = 0x2c; // disarm TDRE
}
}
//PTT_PTT3 = 0;
}
int main2(void){ int i;
// *************** Test #1: test transmit (index) FIFO **************
TxFifo_Init();
result = TxFifo_Get(&letter); // letter = ??, result = 0
result = TxFifo_Put('A'); // result = 1
result = TxFifo_Put('B'); // result = 1
result = TxFifo_Put('C'); // result = 1
result = TxFifo_Get(&letter); // letter = 0x41, result = 1
result = TxFifo_Get(&letter); // letter = 0x42, result = 1
result = TxFifo_Put('D'); // result = 1
result = TxFifo_Size(); // result = 2
result = TxFifo_Get(&letter); // letter = 0x43, result = 1
result = TxFifo_Get(&letter); // letter = 0x44, result = 1
result = TxFifo_Size(); // result = 0
result = TxFifo_Get(&letter); // letter = ??, result = 0
for(i='A'; i<'A'+TXFIFOSIZE; i=i+1){
result = TxFifo_Put(i); // result = 1
}
result = TxFifo_Size(); // result = 16
result = TxFifo_Get(&letter); // letter = 0x41, result = 1
result = TxFifo_Size(); // result = 15
result = TxFifo_Get(&letter); // letter = 0x42, result = 1
result = TxFifo_Size(); // result = 14
result = TxFifo_Put(' '); // result = 1
result = TxFifo_Size(); // result = 15
// *************** Test #2: test receive (pointer) FIFO *************
RxFifo_Init();
result = RxFifo_Get(&letter); // letter = ??, result = 0
result = RxFifo_Put('A'); // result = 1
result = RxFifo_Put('B'); // result = 1
result = RxFifo_Put('C'); // result = 1
result = RxFifo_Get(&letter); // letter = 0x41, result = 1
result = RxFifo_Get(&letter); // letter = 0x42, result = 1
result = RxFifo_Put('D'); // result = 1
result = RxFifo_Size(); // result = 2
result = RxFifo_Get(&letter); // letter = 0x43, result = 1
result = RxFifo_Get(&letter); // letter = 0x44, result = 1
result = RxFifo_Size(); // result = 0
result = RxFifo_Get(&letter); // letter = ??, result = 0
for(i='A'; i<'A'+RXFIFOSIZE-1; i=i+1){
result = RxFifo_Put(i); // result = 1
}
result = RxFifo_Size(); // result = 9
result = RxFifo_Get(&letter); // letter = 0x41, result = 1
result = RxFifo_Size(); // result = 8
result = RxFifo_Get(&letter); // letter = 0x42, result = 1
result = RxFifo_Size(); // result = 7
result = RxFifo_Put(' '); // result = 1
result = RxFifo_Size(); // result = 8
// *********** Test #3: test transmit (index) FIFO creator **********
Tx2Fifo_Init();
result = Tx2Fifo_Get(&letter);// letter = ??, result = 0
result = Tx2Fifo_Put('A'); // result = 1
result = Tx2Fifo_Put('B'); // result = 1
result = Tx2Fifo_Put('C'); // result = 1
result = Tx2Fifo_Get(&letter);// letter = 0x41, result = 1
result = Tx2Fifo_Get(&letter);// letter = 0x42, result = 1
result = Tx2Fifo_Put('D'); // result = 1
result = Tx2Fifo_Size(); // result = 2
result = Tx2Fifo_Get(&letter);// letter = 0x43, result = 1
result = Tx2Fifo_Get(&letter);// letter = 0x44, result = 1
result = Tx2Fifo_Size(); // result = 0
result = Tx2Fifo_Get(&letter);// letter = ??, result = 0
for(i='A'; i<'A'+TX2FIFOSIZE; i=i+1){
result = Tx2Fifo_Put(i); // result = 1
}
result = Tx2Fifo_Size(); // result = 32
result = Tx2Fifo_Get(&letter);// letter = 0x41, result = 1
result = Tx2Fifo_Size(); // result = 31
result = Tx2Fifo_Get(&letter);// letter = 0x42, result = 1
result = Tx2Fifo_Size(); // result = 30
result = Tx2Fifo_Put(' '); // result = 1
result = Tx2Fifo_Size(); // result = 31
// *********** Test #4: test receive (pointer) FIFO creator *********
Rx2Fifo_Init();
result = Rx2Fifo_Get(&letter);// letter = ??, result = 0
result = Rx2Fifo_Put('A'); // result = 1
result = Rx2Fifo_Put('B'); // result = 1
result = Rx2Fifo_Put('C'); // result = 1
result = Rx2Fifo_Get(&letter);// letter = 0x41, result = 1
result = Rx2Fifo_Get(&letter);// letter = 0x42, result = 1
result = Rx2Fifo_Put('D'); // result = 1
result = Rx2Fifo_Size(); // result = 2
result = Rx2Fifo_Get(&letter);// letter = 0x43, result = 1
result = Rx2Fifo_Get(&letter);// letter = 0x44, result = 1
result = Rx2Fifo_Size(); // result = 0
result = Rx2Fifo_Get(&letter);// letter = ??, result = 0
for(i='A'; i<'A'+RX2FIFOSIZE-1; i=i+1){
result = Rx2Fifo_Put(i); // result = 1
}
result = Rx2Fifo_Size(); // result = 26
result = Rx2Fifo_Get(&letter);// letter = 0x41, result = 1
result = Rx2Fifo_Size(); // result = 25
result = Rx2Fifo_Get(&letter);// letter = 0x42, result = 1
result = Rx2Fifo_Size(); // result = 24
result = Rx2Fifo_Put(' '); // result = 1
result = Rx2Fifo_Size(); // result = 25
while(1);
}
