unsigned char * UART_Read_Text()
{
unsigned const char *a="Keyed in \r\n";
unsigned static char string[20];
unsigned char x, i = 0;
//receive the characters until ENTER is pressed (ASCII for ENTER = 13)
while((x = UART_Read()) != 13)
{
//and store the received characters into the array string[] one-by-one
string[i++] = x;
}
//insert NULL to terminate the string
string[i] = '\0';
UART_Write_Text(a);
//return the received string
return(string);
}
void main(void)
{
const unsigned char *mas="\r\n---------------MASTER DEVICE-----------------\r\n";
const unsigned char * arr1 = "\r\nTaking in the text \r\n";
const unsigned char *arr2="\r\nEnter your choice \r\n 1.Slave 1(Address:0xAA\r\n2.Slave 2(Address:0xBB)\r\n3.Slave 3(Address:0xCC\r\n";
const unsigned char *arr3= "You have entered:\r\n";
const unsigned char *arr4= "\r\nUART Initialised\r\n";
const unsigned char *arr5= "\r\nI2C initialised:\r\n";
const unsigned char *msg1="\r\nSending to Slave 1 (Address 0xAA)\r\n";
const unsigned char *msg2="\r\nSending to Slave 2 (Address 0xBB)\r\n";
const unsigned char *msg3="\r\nSending to Slave 3 (Address 0xCC)\r\n";
const unsigned char *msg4="\r\nAddress sent\r\n";
const unsigned char *msg5="\r\nData sent\r\n";
const unsigned char *err="\r\nNo message will be sent since no slave no entered\r\n";
const unsigned char *fin="\r\nClosing Communication!\r\n";
const unsigned char *msgm="\r\nYou have entered choice number:\r\n";
unsigned char choice;
OSCCONbits.IRCF = 0x07; // Configure Internal OSC for 8MHz Clock
while(!OSCCONbits.HTS); // Wait Until Internal Osc is Stable
INTCON=0; // purpose of disabling the interrupts.
UART_Init(baud_rate);
UART_Write_Text(mas);
UART_Write_Text(arr4);
delay_ms(500);
I2C_init();
UART_Write_Text(arr5);
//Initialisation done
while(1)
{
UART_Write_Text(arr1);
i2c_idle();
//receive the characters until ENTER is pressed (ASCII for ENTER = 13)
is=UART_Read_Text();
UART_Write_Text(arr3);
UART_Write_Text(is);
UART_Write_Text(arr2);
choice=UART_Read();
UART_Write_Text(msgm);
UART_Write(choice);
switch(choice)
{
case 0x31:
{
UART_Write_Text(msg1);
I2C_Start();
if(I2C_address_send())//device address
{
delay_us(20);//clock settle and then send
I2C_Write_Text(is);
}
else
break;
I2C_Stop();
break;
}
case 0x32:
{
UART_Write_Text(msg2);
I2C_Start();
if(I2C_address_send1())//device address
{
delay_us(20);//clock settle and then send
I2C_Write_Text(is);
}
else
break;
I2C_Stop();
break;
}
case 0x33:
{
UART_Write_Text(msg3);
I2C_Start();
if(I2C_address_send2())//device address
{
delay_us(20);//clock settle and then send
I2C_Write_Text(is);
}
else
break;
I2C_Stop();
break;
}
default:
UART_Write_Text(err);
break;
}
//Choice entered data sent respectively to slaves now stop
//i2c_SendAcknowledge(I2C_LAST);
PIR1bits.SSPIF = 0;
UART_Write_Text(fin);
}
}
void main()
{
unsigned char i;
unsigned char array[80];
const char *main1="SLAVE 1(0XAA)";
const char *main2="SLAVE 2(0XBB)";
const char *main3="SLAVE 3(0XCC)";
const char *msg1="\r\nnWaiting for Master\r\n";
const char *t1="\r\n before start\r\n";
const char *t2="\r\n address detected\r\n";
const char *t3="\r\n data recieved??\r\n";
const unsigned char *arr1= "\r\nUART Initialised\r\n";
const unsigned char *arr2= "\r\nSlave I2C initialised:\r\n";
OSCCONbits.IRCF = 0x07; // Configure Internal OSC for 8MHz Clock
while(!OSCCONbits.HTS); // Wait Until Internal Osc is Stable
UART_Init(baud_rate);
UART_Write_Text(main3);//DISPLAYS SLAVE 1 AS THE SLAVE DEVICE
UART_Write_Text(arr1);
delay_ms(500);
UART_Write_Text(msg1);
i2c_slave_init();
UART_Write_Text(arr2);
while(1)
{
for(i=0;i<=80;i++)
{
array[i]=0;
}
i=0;
UART_Write(datain);
UART_Write_Text("\r\n next line\r\n");
UART_Write_Text(array);
UART_Write_Text("\r\n");
//start i2c routines
i2c_start_detect();
PIR1bits.SSPIF=0;
i2c_address_detect();
UART_Write_Text("Address check returns true\r\n");
i=0;
delay_us(50);
do
{
i2c_data_detect();
array[i]=datain;
i++;
}while(!(SSPSTATbits.P));
UART_Write_Text("\r\nDATA READ\r\n");
UART_Write_Text(array);
}
}
void main(void)
{
//const unsigned char *msg;
const unsigned char * arr1 = "\r\ntaking in the text \r\n";
const unsigned char *arr2="\r\nAcknowledged\r\n";
const unsigned char *arr3= "You have entered:\r\n";
const unsigned char *arr4= "UART Initialised\r\n";
const unsigned char *arr5= "Sending TO Led\r\n";
const unsigned char *arr6= "Tx of 1 byte complete\r\n";
const unsigned char *arr7= "Tx completed all bytes\r\n";
unsigned int j;
unsigned char LED_Output;
TRISB=0x00;
OSCCONbits.IRCF = 0x07; // Configure Internal OSC for 8MHz Clock
while(!OSCCONbits.HTS); // Wait Until Internal Osc is Stable
INTCON=0; // purpose of disabling the interrupts.
UART_Init(baud_rate);
UART_Write_Text(arr4);
delay_ms(500);
while(1)
{
UART_Write_Text(arr1);
is=UART_Read_Text();
UART_Write_Text(arr2);
UART_Write_Text(arr3);
UART_Write_Text(is);
//sending to led
UART_Write_Text(arr5);
while(*is)
{
for(j=0;j<=7;j++)
{
LED_Output= (*is&0x01)==1?1:0;
RB0=LED_Output;
delay_ms(125);
*is=*is>>1;
}
is++;
UART_Write_Text(arr6);
}
UART_Write_Text(arr7);
}
}
void interrupt high_isr (void)
{
if ((PIR1bits.TMR1IF==1)&&(PIE1bits.TMR1IE == 1))
{
if (distance<25)
{
TRISBbits.RB3=0;
TMR1H = 172; // preset for timer1 MSB register
TMR1L = 176; // preset for timer1 LSB register
//0 sec
}
else if ((distance>=25)&&(distance<40))
{
TRISBbits.RB3=~TRISBbits.RB3;
TMR1H = 137; // preset for timer1 MSB register
TMR1L = 250; // preset for timer1 LSB register
// 0.1s
}
else if ((distance>=40)&&(distance<70))
{
TRISBbits.RB3=~TRISBbits.RB3;
TMR1H = 58; // preset for timer1 MSB register
TMR1L = 36; // preset for timer1 LSB register
// 0.1s
}
else
{
j=0;
TRISBbits.RB3=0;
do {
j++;
} while (j < 16000);
TRISBbits.RB3=1;
TMR1H = 0; // preset for timer1 MSB register
TMR1L = 222; // preset for timer1 LSB register
}
T1CONbits.TMR1ON = 1;
PIR1bits.TMR1IF = 0; // Timer1 interrupt Flag cleared
}
if(RCIF) {
if(RCREG == '²') {
UART_Write_Text(EnterMenu);
Mode = 0;
index = 0;
}
else if(RCREG == 27 && Mode == 0) {
Mode = 1;
UART_Write_Text(quit);
UART_Write_Text(Retour);
}
else if(RCREG == 0x0D) {
ScrollBuffer[index] = '\0';
index = 0;
BufferReady = 1;
UART_Write_Text(Retour);
}
else {
BufferReady = 0;
ScrollBuffer[index] = RCREG;
TXREG = RCREG;
index++;
if(10 < index) {
UART_Write_Text(error);
index = 0;
}
}
}
}
