eebhoi01
Advanced Member level 4
![Full Member level 1](/styles/images/ranks/elevel1.gif)
Hello guys,
I am studying how to use PIC18 right now, I have found a good example here in edaboard https://www.edaboard.com/blog/1512/. I am sure I did follow the instructions in here, but I am stuck in "build" process. I can't build the project because MikroC says the error Undeclared Identifier 'USB_Interrupt_Proc'.
By the way I am using PIC18f4550 - MikroC - Proteus in my study. Also the 'USB_Interrupt_Proc' isn't corrected by MikroC (underlined with a red fuzzy line), I think my USB library is enabled that makes me confused more why is this so.
P.S I also have tried running the example of MikroC about USB in the "help". When I build it, it says the same error.
Looking forward for your help guys.
I am studying how to use PIC18 right now, I have found a good example here in edaboard https://www.edaboard.com/blog/1512/. I am sure I did follow the instructions in here, but I am stuck in "build" process. I can't build the project because MikroC says the error Undeclared Identifier 'USB_Interrupt_Proc'.
Code:
unsigned char Read_Buffer[16] absolute 0x500;
unsigned char Write_Buffer[16]absolute 0x510;
unsigned char num,flag;
void interrupt()
{
USB_Interrupt_Proc();
TMR0L = 100; //Reload Value
INTCON.TMR0IF = 0; //Re-Enable Timer-0 Interrupt
}
//LCD 8-bit Mode Connection
sbit LCD8_RS at RC1_bit;
sbit LCD8_RW at RC0_bit;
sbit LCD8_EN at RC2_bit;
sbit LCD8_D7 at RD7_bit;
sbit LCD8_D6 at RD6_bit;
sbit LCD8_D5 at RD5_bit;
sbit LCD8_D4 at RD4_bit;
sbit LCD8_D3 at RD3_bit;
sbit LCD8_D2 at RD2_bit;
sbit LCD8_D1 at RD1_bit;
sbit LCD8_D0 at RD0_bit;
sbit LCD8_RS_Direction at TRISC1_bit;
sbit LCD8_RW_Direction at TRISC0_bit;
sbit LCD8_EN_Direction at TRISC2_bit;
sbit LCD8_D7_Direction at TRISD7_bit;
sbit LCD8_D6_Direction at TRISD6_bit;
sbit LCD8_D5_Direction at TRISD5_bit;
sbit LCD8_D4_Direction at TRISD4_bit;
sbit LCD8_D3_Direction at TRISD3_bit;
sbit LCD8_D2_Direction at TRISD2_bit;
sbit LCD8_D1_Direction at TRISD1_bit;
sbit LCD8_D0_Direction at TRISD0_bit;
// End Lcd8 module connections
char i; // Loop variable
void UART1_Write_Text_Newline(unsigned char msg[])
{
UART1_Write_Text(msg);
UART1_Write(10);
UART1_Write(13);
}
void clear_buffer(unsigned char buffer[])
{
unsigned int i = 0;
while(buffer[i] != '\0')
{
buffer[i] = '\0';
i++;
}
}
//
void main()
{
UART1_Init(9600);
Delay_ms(100);
UART1_Write_Text("USB Test Program");
ADCON1 |= 0x0F; // Configure AN pins as digital
CMCON |= 7; // Disable comparators
TRISB = 0x00;
TRISC = 0x80;
Lcd8_Init(); // Initialize Lcd8
Delay_ms(100);
Lcd8_Cmd(_LCD_CLEAR); // Clear display
Delay_ms(100);
Lcd8_Cmd(_LCD_CURSOR_OFF); // Cursor off
Delay_ms(100);
Lcd8_Out(1,3,"PIC18F4550"); // Write text in first row
Delay_ms(100);
Lcd8_Out(2,3,"USB Example!"); // Write text in second row
Delay_ms(2000);
INTCON = 0;
INTCON2 = 0xF5;
INTCON3 = 0xC0;
RCON.IPEN = 0;
PIE1 = 0;
PIE2 = 0;
PIR1 = 0;
PIR2 = 0;
//
// Configure TIMER 0 for 3.3ms interrupts. Set prescaler to 256
// and load TMR0L to 100 so that the time interval for timer
// interrupts at 48MHz is 256.(256-100).0.083 = 3.3ms
//
// The timer is in 8-bit mode by default
T0CON = 0x47; // Prescaler = 256
TMR0L = 100; // Timer count is 256-156 = 100
INTCON.TMR0IE = 1; // Enable T0IE
T0CON.TMR0ON = 1; // Turn Timer 0 ON
INTCON = 0xE0; // Enable interrupts
//
// Enable USB port
//
UART1_Write(10);
UART1_Write(13);
UART1_Write_Text_Newline("Data is Ready to be Received from the PC");
Hid_Enable(&Read_Buffer,&Write_Buffer);
Delay_ms(2000);
// Read from the USB port. Number of bytes read is in num
start:
while(Hid_Read() == 0); //Stay Here if Data is Not Coming from Serial Port
//If Some Data is Coming then move forward and check whether the keyword start is coming or not
if(strncmp(Read_Buffer,"S",1) == 0)
{
Lcd8_Cmd(_LCD_CLEAR);
Lcd8_Out(1,2,"Authentication");
Lcd8_Out(2,8,"OK");
goto loop;
}
else
{
Lcd8_Cmd(_LCD_CLEAR);
Lcd8_Out(1,2,"Authentication");
Lcd8_Out(2,5,"Fails!");
goto start;
}
loop:
//Now Authentication is Successfull Lets Try Something else
//Lets Display the Data Coming from the USB HID Port to the LCD
Delay_ms(1000);
Lcd8_Cmd(_LCD_CLEAR);
Lcd8_Out(1,1,"Received Data:-");
flag = 0;
loop_second:
clear_buffer(Read_Buffer);
while(Hid_Read() == 0)
{
if(flag == 0)
{
Lcd8_Out(2,1,"No Data");
flag = 1;
}
}
Lcd8_Cmd(_LCD_CLEAR);
Lcd8_Out(1,1,"Received Data:-");
Lcd8_Out(2,1,Read_Buffer);
goto loop_second;
Delay_ms(1000);
Hid_Disable();
Lcd8_Out(1,1,"HID DISABLE");
}
By the way I am using PIC18f4550 - MikroC - Proteus in my study. Also the 'USB_Interrupt_Proc' isn't corrected by MikroC (underlined with a red fuzzy line), I think my USB library is enabled that makes me confused more why is this so.
P.S I also have tried running the example of MikroC about USB in the "help". When I build it, it says the same error.
Looking forward for your help guys.