// copy from software TX FIFO to hardware TX FIFO
// stop when software TX FIFO is empty or hardware TX FIFO is full
void static copySoftwareToHardware(void){
char letter;
while(((UART0_FR_R&UART_FR_TXFF) == 0) && (TxFifo_Size() > 0)){
TxFifo_Get(&letter);
UART0_DR_R = letter;
}
}
/*
===================================================================================================
USB_UART :: USB_UART_HandleTXBuffer
- does... something....
===================================================================================================
*/
void USB_UART_HandleTXBuffer(void){
char letter;
while(((UART0_FR_R&UART_FR_TXFF) == 0) && (TxFifo_Size() > 0)){ //while not full put copy from SW to HW fifo
TxFifo_Get(&letter);
UART0_DR_R = letter;
}
}
int main(void){
PLL_Init(Bus80MHz); // 80 MHz
UART_Init(); // initialize UART device
//initialize ADC, hardware timer trigger, 100Hz sampling
ADC0_InitTimer0ATriggerSeq3PD3(f100HZ);
TxFifo_Init(); // initialize FIFO
ST7735_InitR(INITR_REDTAB); // initialize LCD
ST7735_InitTemperatureGraph(); // initialize graph area
EnableInterrupts();
while(1){
TxFifo_Get(&adcValue); // get most recent ADC value from FIFO
ST7735_UpdateTemperatureGraph(numSamples, adcValue); // plot new point and display ADC and temperature values
numSamples++; // counts the number of samples
}
}
// 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);
}
