mmahfuj
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I wanna make a tachometer using IR and LCD. I used PIC16F877a and the code is in below. Please help me to show me the exact way for the project.
Now what should i do???? Please help !!!
The code is:
but it does not work. please give me the proper schematic and codes as well.
waiting for answer.........
:sad:
- - - Updated - - -
[pls reply me....pls.. I urgently need it ! I am facing a great problem over it...][/pls reply me....pls.. I urgently need it ! I am facing a great problem over it...]
Now what should i do???? Please help !!!
The code is:
Code C - [expand] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 /* Lab 7: Timer0 as a counter Internal Oscillator @ 4MHz, MCLR Enabled, PWRT Enabled, WDT OFF Copyright @ Joy@Nadim January, 2013 */ // LCD module connections sbit LCD_RS at RB2_bit; sbit LCD_EN at RB3_bit; sbit LCD_D4 at RB4_bit; sbit LCD_D5 at RB5_bit; sbit LCD_D6 at RB6_bit; sbit LCD_D7 at RB7_bit; sbit LCD_RS_Direction at TRISB2_bit; sbit LCD_EN_Direction at TRISB3_bit; sbit LCD_D4_Direction at TRISB4_bit; sbit LCD_D5_Direction at TRISB5_bit; sbit LCD_D6_Direction at TRISB6_bit; sbit LCD_D7_Direction at TRISB7_bit; // End LCD module connections // Define Messages char message1[] = "Rev = 0000 RPM"; char *txt ="Tachometer"; char *freq = "0000"; void Display_RPM(unsigned int freq2write) { freq[0] = (freq2write/1000)%10 + 48; // Extract thousands digit freq[1] = (freq2write/100)%10 + 48; // Extract hundreds digit freq[2] = (freq2write/10)%10 + 48; // Extract tens digit freq[3] = freq2write%10 + 48; // Extract ones digit // Display Frequency on LCD Lcd_Out(2, 7, freq); } unsigned int count; void main() { ADCON1= 0b00000110; TRISC = 0x00; // PORTC O/P portc=0; TRISA = 0b00001000; // RA2/T0CKI input, RA3 is I/P only OPTION_REG = 0b00101000; // Prescaler (1:1), TOCS =1 for counter mode Lcd_Init(); // Initialize LCD Lcd_Cmd(_LCD_CLEAR); // CLEAR display Lcd_Cmd(_LCD_CURSOR_OFF); // Cursor off Lcd_Out(1, 3, txt); Lcd_Out(2,1,message1); // Write message1 in 2nd row do { if(porta.f3==1){ //button at porta3 portc.f0=1; TMR0=0; Delay_ms(5000); // Delay 5 Sec count= TMR0; count*=12; Display_RPM(count); portc.f0=0; porta.f3=0; } } while(1); // Infinite loop }
but it does not work. please give me the proper schematic and codes as well.
waiting for answer.........
:sad:
- - - Updated - - -
[pls reply me....pls.. I urgently need it ! I am facing a great problem over it...][/pls reply me....pls.. I urgently need it ! I am facing a great problem over it...]
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