سلام عليكم
توجد مكتبه في مايكروسي وهي تتعامل مع بروتوكول I2C للمايكروكنترولر الذي لايحتوي على بروتوكول I2C
http://img07.arabsh.com/uploads/imag...454a66f702.png
لقد قمت باستخدام هذه مكتبه للمايكرو 16F628A واستخدمت ايسي لغرض عرض وقت ولكن مشكله مايكرو لايعمل اطلاقا
واذا قمت بالغاء كود تعريف
كود:
Soft_I2C_Init(); // Initialize Soft I2C communication
تظهر رسائل ويعمل مايكرو ولكن لايعرض وقت اي ان بروتوكول I2C لايعمل
ارجو مساعده في حل مشكله
كود:
// Software I2C connections
sbit Soft_I2C_Scl at RA0_bit;
sbit Soft_I2C_Sda at RA1_bit;
sbit Soft_I2C_Scl_Direction at TRISA0_bit;
sbit Soft_I2C_Sda_Direction at TRISA1_bit;
// End Software I2C connections
// LCD module connections
sbit LCD_RS at RB4_bit;
sbit LCD_EN at RB5_bit;
sbit LCD_D4 at RB0_bit;
sbit LCD_D5 at RB1_bit;
sbit LCD_D6 at RB2_bit;
sbit LCD_D7 at RB3_bit;
sbit LCD_RS_Direction at TRISB4_bit;
sbit LCD_EN_Direction at TRISB5_bit;
sbit LCD_D4_Direction at TRISB0_bit;
sbit LCD_D5_Direction at TRISB1_bit;
sbit LCD_D6_Direction at TRISB2_bit;
sbit LCD_D7_Direction at TRISB3_bit;
// End LCD module connections
char seconds, minutes, hours, day, month, year; // Global date/time variables
//--------------------- Reads time and date information from RTC (PCF8583)
void Read_Time() {
Soft_I2C_Start(); // Issue start signal
Soft_I2C_Write(0xA0); // Address PCF8583, see PCF8583 datasheet
Soft_I2C_Write(2); // Start from address 2
Soft_I2C_Start(); // Issue repeated start signal
Soft_I2C_Write(0xA1); // Address PCF8583 for reading R/W=1
seconds = Soft_I2C_Read(1); // Read seconds byte
minutes = Soft_I2C_Read(1); // Read minutes byte
hours = Soft_I2C_Read(1); // Read hours byte
day = Soft_I2C_Read(1); // Read year/day byte
month = Soft_I2C_Read(0); // Read weekday/month byte
Soft_I2C_Stop(); // Issue stop signal
}
//-------------------- Formats date and time
void Transform_Time() {
seconds = ((seconds & 0xF0) >> 4)*10 + (seconds & 0x0F); // Transform seconds
minutes = ((minutes & 0xF0) >> 4)*10 + (minutes & 0x0F); // Transform months
hours = ((hours & 0xF0) >> 4)*10 + (hours & 0x0F); // Transform hours
year = (day & 0xC0) >> 6; // Transform year
day = ((day & 0x30) >> 4)*10 + (day & 0x0F); // Transform day
month = ((month & 0x10) >> 4)*10 + (month & 0x0F); // Transform month
}
//-------------------- Output values to LCD
void Display_Time() {
Lcd_Chr(1, 6, (day / 10) + 48); // Print tens digit of day variable
Lcd_Chr(1, 7, (day % 10) + 48); // Print oness digit of day variable
Lcd_Chr(1, 9, (month / 10) + 48);
Lcd_Chr(1,10, (month % 10) + 48);
Lcd_Chr(1,15, year + 48); // Print year variable (start from year 2010)
Lcd_Chr(2, 6, (hours / 10) + 48);
Lcd_Chr(2, 7, (hours % 10) + 48);
Lcd_Chr(2, 9, (minutes / 10) + 48);
Lcd_Chr(2,10, (minutes % 10) + 48);
Lcd_Chr(2,12, (seconds / 10) + 48);
Lcd_Chr(2,13, (seconds % 10) + 48);
}
//------------------ Performs project-wide init
void Init_Main() {
cmcon=6;
Lcd_Init(); // Initialize LCD
Lcd_Cmd(_LCD_CLEAR); // Clear LCD display
Lcd_Cmd(_LCD_CURSOR_OFF); // Turn cursor off
Soft_I2C_Init(); // Initialize Soft I2C communication
Lcd_Out(1,1,"Date:"); // Prepare and output static text on LCD
Lcd_Chr(1,8,'.');
Lcd_Chr(1,11,'.');
Lcd_Chr(1,16,'.');
Lcd_Out(2,1,"Time:");
Lcd_Chr(2,8,':');
Lcd_Chr(2,11,':');
Lcd_Out(1,12,"201"); // start from year 2010*/
}
//----------------- Main procedure
void main() {
Delay_ms(500);
Init_Main(); // Perform initialization
delay_ms(3000);
while (1) { // Endless loop
Read_Time(); // Read time from RTC(PCF8583)
Transform_Time(); // Format date and time
Display_Time(); // Prepare and display on LCD
}
}
مشكله في بروتوكول I2C
C.
