?? uart128.c
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#include<global.h>
//#include<buffer.h>
#include<macros.h>
#include<uart128.h>
//#include<iom128v.h>
/*
#define TRUE 1
#define FALSE 0
// UART global variables
// flag variables
volatile u08 uartReadyTx[2];
volatile u08 uartBufferedTx[2];
// receive and transmit buffers
cBuffer uartRxBuffer[2];
cBuffer uartTxBuffer[2];
unsigned short uartRxOverflow[2];
#ifndef UART_BUFFERS_EXTERNAL_RAM
// using internal ram,
// automatically allocate space in ram for each buffer
static char uart0RxData[UART0_RX_BUFFER_SIZE];
static char uart0TxData[UART0_TX_BUFFER_SIZE];
static char uart1RxData[UART1_RX_BUFFER_SIZE];
static char uart1TxData[UART1_TX_BUFFER_SIZE];
#endif
typedef void (*voidFuncPtru08)(unsigned char);
volatile static voidFuncPtru08 UartRxFunc[2];
void uartInit(void)
{
// initialize both uarts
uart0Init();
uart1Init();
}
*/
/*
void uart0Init(void)
{
// initialize the buffers
uart0InitBuffers();
// initialize user receive handlers
UartRxFunc[0] = 0;
// enable RxD/TxD and interrupts
// outb(UCSR0B, (1<<RXCIE)|(1<<TXCIE)|(1<<RXEN)|(1<<TXEN));
UCSR0B=//*(1<<RXCIE)|(1<<TXCIE)|
(1<<RXEN)|(1<<TXEN);
// set default baud rate
uartSetBaudRate(0, UART0_DEFAULT_BAUD_RATE);
// initialize states
uartReadyTx[0] = TRUE;
uartBufferedTx[0] = FALSE;
// clear overflow count
uartRxOverflow[0] = 0;
// enable interrupts
SEI();
}
void uart1Init(void)
{
// initialize the buffers
uart1InitBuffers();
// initialize user receive handlers
UartRxFunc[1] = 0;
// enable RxD/TxD and interrupts
// outb(UCSR1B, (1<<RXCIE)|(1<<TXCIE)|(1<<RXEN)|(1<<TXEN));
UCSR1B=//*(1<<RXCIE)|(1<<TXCIE)|
(1<<RXEN)|(1<<TXEN);
// set default baud rate
uartSetBaudRate(1, UART1_DEFAULT_BAUD_RATE);
// initialize states
uartReadyTx[1] = TRUE;
uartBufferedTx[1] = FALSE;
// clear overflow count
uartRxOverflow[1] = 0;
// enable interrupts
SEI();
}
void uart0InitBuffers(void)
{
#ifndef UART_BUFFERS_EXTERNAL_RAM
// initialize the UART0 buffers
bufferInit(&uartRxBuffer[0], uart0RxData, UART0_RX_BUFFER_SIZE);
bufferInit(&uartTxBuffer[0], uart0TxData, UART0_TX_BUFFER_SIZE);
#else
// initialize the UART0 buffers
bufferInit(&uartRxBuffer[0], (u08*) UART0_RX_BUFFER_ADDR, UART0_RX_BUFFER_SIZE);
bufferInit(&uartTxBuffer[0], (u08*) UART0_TX_BUFFER_ADDR, UART0_TX_BUFFER_SIZE);
#endif
}
void uart1InitBuffers(void)
{
#ifndef UART_BUFFERS_EXTERNAL_RAM
// initialize the UART1 buffers
bufferInit(&uartRxBuffer[1], uart1RxData, UART1_RX_BUFFER_SIZE);
bufferInit(&uartTxBuffer[1], uart1TxData, UART1_TX_BUFFER_SIZE);
#else
// initialize the UART1 buffers
bufferInit(&uartRxBuffer[1], (u08*) UART1_RX_BUFFER_ADDR, UART1_RX_BUFFER_SIZE);
bufferInit(&uartTxBuffer[1], (u08*) UART1_TX_BUFFER_ADDR, UART1_TX_BUFFER_SIZE);
#endif
}
void uartSetRxHandler(u08 nUart, void (*rx_func)(unsigned char c))
{
// make sure the uart number is within bounds
if(nUart < 2)
{
// set the receive interrupt to run the supplied user function
UartRxFunc[nUart] = rx_func;
}
}
void uartSetBaudRate(u08 nUart, u32 baudrate)
{
// calculate division factor for requested baud rate, and set it
u08 baudrateDiv;
baudrateDiv = (u08)((F_CPU+(baudrate*8L))/(baudrate*16L)-1);
if(nUart)
outb(UBRR1L, baudrateDiv);
else
outb(UBRR0L, baudrateDiv);
}
cBuffer* uartGetRxBuffer(u08 nUart)
{
// return rx buffer pointer
return &uartRxBuffer[nUart];
}
cBuffer* uartGetTxBuffer(u08 nUart)
{
// return tx buffer pointer
return &uartTxBuffer[nUart];
}
void uartSendByte(u08 nUart, u08 txData)
{
// wait for the transmitter to be ready
// while(!uartReadyTx[nUart]);
// send byte
if(nUart)
{
while(!(UCSR1A & (1<<UDRE1)));//while(!(UCSR1A & (1<<UDRE)));
outb(UDR1, txData);
}
else
{
while(!(UCSR0A & (1<<UDRE0)));// while(!(UCSR0A & (1<<UDRE)));
outb(UDR0, txData);
}
// set ready state to FALSE
uartReadyTx[nUart] = FALSE;
}
void uart0SendByte(u08 data)
{
// send byte on UART0
uartSendByte(0, data);
}
void uart1SendByte(u08 data)
{
// send byte on UART1
uartSendByte(1, data);
}
int uart0GetByte(void)
{
// get single byte from receive buffer (if available)
u08 c;
if(uartReceiveByte(0,&c))
return c;
else
return -1;
}
int uart1GetByte(void)
{
// get single byte from receive buffer (if available)
u08 c;
if(uartReceiveByte(1,&c))
return c;
else
return -1;
}
u08 uartReceiveByte(u08 nUart, u08* rxData)
{
// make sure we have a receive buffer
if(uartRxBuffer[nUart].size)
{
// make sure we have data
if(uartRxBuffer[nUart].datalength)
{
// get byte from beginning of buffer
*rxData = bufferGetFromFront(&uartRxBuffer[nUart]);
return TRUE;
}
else
return FALSE; // no data
}
else
return FALSE; // no buffer
}
void uartFlushReceiveBuffer(u08 nUart)
{
// flush all data from receive buffer
bufferFlush(&uartRxBuffer[nUart]);
}
u08 uartReceiveBufferIsEmpty(u08 nUart)
{
return (uartRxBuffer[nUart].datalength == 0);
}
void uartAddToTxBuffer(u08 nUart, u08 data)
{
// add data byte to the end of the tx buffer
bufferAddToEnd(&uartTxBuffer[nUart], data);
}
void uart0AddToTxBuffer(u08 data)
{
uartAddToTxBuffer(0,data);
}
void uart1AddToTxBuffer(u08 data)
{
uartAddToTxBuffer(1,data);
}
void uartSendTxBuffer(u08 nUart)
{
// turn on buffered transmit
uartBufferedTx[nUart] = TRUE;
// send the first byte to get things going by interrupts
uartSendByte(nUart, bufferGetFromFront(&uartTxBuffer[nUart]));
}
u08 uartSendBuffer(u08 nUart, char *buffer, u16 nBytes)
{
register u08 first;
register u16 i;
// check if there's space (and that we have any bytes to send at all)
if((uartTxBuffer[nUart].datalength + nBytes < uartTxBuffer[nUart].size) && nBytes)
{
// grab first character
first = *buffer++;
// copy user buffer to uart transmit buffer
for(i = 0; i < nBytes-1; i++)
{
// put data bytes at end of buffer
bufferAddToEnd(&uartTxBuffer[nUart], *buffer++);
}
// send the first byte to get things going by interrupts
uartBufferedTx[nUart] = TRUE;
uartSendByte(nUart, first);
// return success
return TRUE;
}
else
{
// return failure
return FALSE;
}
}
// UART Transmit Complete Interrupt Function
void uartTransmitService(u08 nUart)
{
// check if buffered tx is enabled
if(uartBufferedTx[nUart])
{
// check if there's data left in the buffer
if(uartTxBuffer[nUart].datalength)
{
// send byte from top of buffer
if(nUart)
//outb(UDR1, bufferGetFromFront(&uartTxBuffer[1]) );
UDR1=bufferGetFromFront(&uartTxBuffer[1]) ;
else
//outb(UDR0, bufferGetFromFront(&uartTxBuffer[0]) );
UDR0=bufferGetFromFront(&uartTxBuffer[0]) ;
}
else
{
// no data left
uartBufferedTx[nUart] = FALSE;
// return to ready state
uartReadyTx[nUart] = TRUE;
}
}
else
{
// we're using single-byte tx mode
// indicate transmit complete, back to ready
uartReadyTx[nUart] = TRUE;
}
}
// UART Receive Complete Interrupt Function
void uartReceiveService(u08 nUart)
{
u08 c;
// get received char
if(nUart)
c = UDR1;//inb(UDR1);
else
c = UDR0;//inb(UDR0);
// if there's a user function to handle this receive event
if(UartRxFunc[nUart])
{
// call it and pass the received data
UartRxFunc[nUart](c);
}
else
{
// otherwise do default processing
// put received char in buffer
// check if there's space
if( !bufferAddToEnd(&uartRxBuffer[nUart], c) )
{
// no space in buffer
// count overflow
uartRxOverflow[nUart]++;
}
}
}
/*
//中斷定義
UART_INTERRUPT_HANDLER(SIG_UART0_TRANS)
{
// service UART0 transmit interrupt
uartTransmitService(0);
}
UART_INTERRUPT_HANDLER(SIG_UART1_TRANS)
{
// service UART1 transmit interrupt
uartTransmitService(1);
}
UART_INTERRUPT_HANDLER(SIG_UART0_RECV)
{
// service UART0 receive interrupt
uartReceiveService(0);
}
UART_INTERRUPT_HANDLER(SIG_UART1_RECV)
{
// service UART1 receive interrupt
uartReceiveService(1);
}
*/
//this function convert char to ascii
//char2hex 把字符型轉變成ACSII
char char2hex(char t1)
{
if((t1>=00) &&(t1<=0x09))t1=t1+0x30;//'0'--'9'
else
{
if((t1>=0x0a)&&(t1<=0x0f))//'A'--'F'
t1=t1-0x0a+0x61;
}
return t1;
}
void sendinthex0(char c)
{
char t2=0;
t2=(c%256)/16;//templ&0xf0;
//t2=t2>>8;
UDR0 = char2hex(t2);
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
t2=(c%256)%16;//templ&0x0f;
UDR0 = char2hex(t2);
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
}
//sendinthex1把整型轉化成4個ASCII輸出
void sendinthex1(int c)
{
char temph=0,templ=0;
char t1=0,t2=0;
temph=c/256;
templ=c%256;
t1=(c/256)/16;
//t1=t1>>8;
UDR0 = char2hex(t1);
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
t1=(c/256)%16;
UDR0 = char2hex(t1);
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
t2=(c%256)/16;//templ&0xf0;
//t2=t2>>8;
UDR0 = char2hex(t2);
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
t2=(c%256)%16;//templ&0x0f;
UDR0 = char2hex(t2);
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
}
//發送字符
void sendchar1(char c) // 發送
{
UDR0 = c;
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
}
//發送整型常數
void sendint1( int c) // 發送
{
UDR0 = (c&0xff00)>>8;
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
UDR0 = c&0xff;
while(!(UCSR0A & 0x40));
UCSR0A |=0x40;
}
//發送字符串函數
void sendstring1(unsigned char * txbuf) // 發送
{
unsigned int j;
for (j = 0; *txbuf; j++, txbuf++)sendchar1(*txbuf);
//for(;*txbuf!='/0';txbuf++)
}
//UART0 initialisation
// desired baud rate:115200
// actual baud rate:111111 (3.7%)
// char size: 8 bit
// parity: Disabled
void uart0_init(void)
{
#ifdef MCUBAUD9600
// UBRRL = (fosc / 16 / (baud + 1)) % 256;
// UBRRH = (fosc / 16 / (baud + 1)) / 256;
UCSR0B = 0x00; //disable while setting baud rate
UCSR0A = 0x00;
UCSR0C = 0x06;
UBRR0L = 0x67; //set baud rate lo
UBRR0H = 0x00; //set baud rate hi
UCSR0B = 0x18;
#else
//baud115200
UCSR0B = 0x00; //disable while setting baud rate
UCSR0A = 0x00;
UCSR0C = 0x06;
UBRR0L = (F_CPU / 16 / (baud + 1)) % 256;//0x03;//0x08; //set baud rate lo
UBRR0H = (F_CPU / 16 / (baud + 1)) / 256;//0x00; //set baud rate hi
UCSR0B = 0x18;//0x98;
#endif
/*
//115200
UCSR0B = 0x00; //disable while setting baud rate
UCSR0A = 0x00;
UCSR0C = 0x06;
// UBRRL = (fosc / 16 / (baud + 1)) % 256;
// UBRRH = (fosc / 16 / (baud + 1)) / 256;
UBRR0L = (F_CPU / 16 / (baud + 1)) % 256;//0x03;//0x08; //set baud rate lo
UBRR0H = (F_CPU / 16 / (baud + 1)) / 256;//0x00; //set baud rate hi
UCSR0B = 0x18;//0x98;
*/
}
//UART1 initialisation
// desired baud rate:115200
// actual baud rate:111111 (3.7%)
// char size: 8 bit
// parity: Disabled
void uart1_init(void)
{
#ifdef MCUBAUD9600
// UBRRL = (fosc / 16 / (baud + 1)) % 256;
// UBRRH = (fosc / 16 / (baud + 1)) / 256;
UCSR1B = 0x00; //disable while setting baud rate
UCSR1A = 0x00;
UCSR1C = 0x06;
UBRR1L = 0x67; //set baud rate lo
UBRR1H = 0x00; //set baud rate hi
UCSR1B = 0x18;
#else
//baud115200
UCSR1B = 0x00; //disable while setting baud rate
UCSR1A = 0x00;
UCSR1C = 0x06;
UBRR1L = (F_CPU / 16 / (baud + 1)) % 256;//0x03;//0x08; //set baud rate lo
UBRR1H = (F_CPU / 16 / (baud + 1)) / 256;//0x00; //set baud rate hi
UCSR1B = 0x18;//0x98;
#endif
}
signed int debug_check_rx(void)
{
return 1;
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