//-------------------------SCI_OutChar------------------------
// Wait for buffer to be empty, output 8-bit to serial port
// interrupt synchronization
// Input: SCI port, 8-bit data to be transferred
// Output: none
void SCI_OutChar(unsigned char port, char data){
#if HISTOGRAM
TxHistogram[port][TxFifo_Size(port)]++; // analysis of FIFO
#endif
while (TxFifo_Put(port, data) == 0){}; // spin if TxFifo is full
if(port==0) SCI0CR2 = 0xAC; /* arm TDRE */
if(port==1) SCI1CR2 = 0xAC; /* arm TDRE */
}
// output ASCII character to UART
// block if TxFifo is full
void UART_OutChar(char data){
while(TxFifo_Put(data) == FIFOFAIL){
OS_Wait(&TxRoomLeft);
}
UART0_IM_R &= ~UART_IM_TXIM; // disable TX FIFO interrupt
copySoftwareToHardware();
UART0_IM_R |= UART_IM_TXIM; // enable TX FIFO interrupt
}
//------------UART_OutCharNonBlock------------
// non blocking output ASCII character to UART
// Input: letter is an 8-bit ASCII character to be transferred
// Output: none
// Error: return with lost data if TxFifo is full
void UART_OutCharNonBlock(char data){
if(TxFifo_Put(data) == FIFOFAIL) return; // lost data
UART0_IM_R &= ~UART_IM_TXIM; // disable TX FIFO interrupt
copySoftwareToHardware();
UART0_IM_R |= UART_IM_TXIM; // enable TX FIFO interrupt
}
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);
}
// output ASCII character to UART
// spin if TxFifo is full
void UART_OutChar(unsigned char data){
while(TxFifo_Put(data) == FIFOFAIL){};
UART0_IM_R &= ~UART_IM_TXIM; // disable TX FIFO interrupt
copySoftwareToHardware();
UART0_IM_R |= UART_IM_TXIM; // enable TX FIFO interrupt
}