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<blockquote data-quote="bruce wayne" data-source="post: 739823">When I try to read from eeprom it is working properly first time after that it is not working. It is stuck at [ICODE]while (!I2C2STATbits.RBF);[/ICODE]. Please suggest a solution for this problem.[CODE]void I2CEMEMinit( I2CEMEM_DRV *i2cMem ){&nbsp; &nbsp;&nbsp; ODCFbits.ODCF4 = 0;&nbsp;&nbsp; ODCFbits.ODCF5 = 0;I2C1CONbits.I2CEN = 0;&nbsp; &nbsp; I2C1CONbits.A10M = 0;&nbsp; &nbsp; I2C1CONbits.SCLREL = 1;&nbsp; &nbsp; I2C1BRG = 300;&nbsp; &nbsp; I2C1ADD = 0;&nbsp; &nbsp; I2C1MSK = 0;&nbsp; &nbsp; I2C1CONbits.I2CEN = 1;&nbsp; &nbsp; IEC1bits.MI2C1IE = 0;&nbsp; &nbsp; IFS1bits.MI2C1IF = 0;}int eepRead(uint16_t addr, uint8_t *data, int numbytes){&nbsp; &nbsp; // Start Condition&nbsp; &nbsp; I2C2CONbits.ACKDT = 0;&nbsp; &nbsp; I2C2CONbits.SEN = 1;&nbsp; &nbsp; while (I2C2CONbits.SEN);&nbsp; &nbsp; // Send Device Address with Write Flag (0xA0)&nbsp; &nbsp; I2C2TRN = 0xA0;&nbsp; &nbsp; while (I2C2STATbits.TBF);&nbsp; &nbsp; while (I2C2STATbits.TRSTAT);&nbsp; &nbsp; // Send Memory Address (High Byte and Low Byte)&nbsp; &nbsp; I2C2TRN = (addr &amp; 0xFF00) &gt;&gt; 8;&nbsp; &nbsp; while (I2C2STATbits.TBF);&nbsp; &nbsp; while (I2C2STATbits.TRSTAT);&nbsp; &nbsp; &nbsp; &nbsp; I2C2TRN = addr &amp; 0x00FF;&nbsp; &nbsp; while (I2C2STATbits.TBF);&nbsp; &nbsp; while (I2C2STATbits.TRSTAT);&nbsp; &nbsp; // Repeated Start Condition&nbsp; &nbsp; I2C2CONbits.RSEN = 1;&nbsp; &nbsp; while (I2C2CONbits.RSEN);&nbsp; &nbsp; // Send Device Address with Read Flag (0xA1)&nbsp; &nbsp; I2C2TRN = 0xA1;&nbsp; &nbsp; while (I2C2STATbits.TBF);&nbsp; &nbsp; while (I2C2STATbits.TRSTAT);&nbsp; &nbsp; // Read Data&nbsp; &nbsp; while (numbytes)&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; I2C2CONbits.RCEN = 1;&nbsp; &nbsp; &nbsp; &nbsp; I2C2STATbits.I2COV = 0;&nbsp; &nbsp; &nbsp; &nbsp; while (!I2C2STATbits.RBF);&nbsp; &nbsp; &nbsp; &nbsp; *data++ = I2C2RCV;&nbsp; &nbsp; &nbsp; &nbsp; numbytes--;&nbsp; &nbsp; &nbsp; &nbsp; // Send ACK&nbsp; &nbsp; &nbsp; &nbsp; if (numbytes)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; I2C2CONbits.ACKDT = 0;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; I2C2CONbits.ACKEN = 1;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; while (I2C2CONbits.ACKEN);&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; }&nbsp; &nbsp; // Send NACK&nbsp; &nbsp; I2C2CONbits.ACKDT = 1;&nbsp; &nbsp; I2C2CONbits.ACKEN = 1;&nbsp; &nbsp; while (I2C2CONbits.ACKEN);&nbsp; &nbsp; // Stop Condition&nbsp; &nbsp; I2C2CONbits.PEN = 1;&nbsp; &nbsp; while (I2C2CONbits.PEN);&nbsp; &nbsp; return 0;}[/CODE]</blockquote>

[QUOTE="bruce wayne, post: 739823"] When I try to read from eeprom it is working properly first time after that it is not working. It is stuck at [ICODE]while (!I2C2STATbits.RBF);[/ICODE]. Please suggest a solution for this problem. [CODE]void I2CEMEMinit( I2CEMEM_DRV *i2cMem ) { ODCFbits.ODCF4 = 0; ODCFbits.ODCF5 = 0; I2C1CONbits.I2CEN = 0; I2C1CONbits.A10M = 0; I2C1CONbits.SCLREL = 1; I2C1BRG = 300; I2C1ADD = 0; I2C1MSK = 0; I2C1CONbits.I2CEN = 1; IEC1bits.MI2C1IE = 0; IFS1bits.MI2C1IF = 0; } int eepRead(uint16_t addr, uint8_t *data, int numbytes) { // Start Condition I2C2CONbits.ACKDT = 0; I2C2CONbits.SEN = 1; while (I2C2CONbits.SEN); // Send Device Address with Write Flag (0xA0) I2C2TRN = 0xA0; while (I2C2STATbits.TBF); while (I2C2STATbits.TRSTAT); // Send Memory Address (High Byte and Low Byte) I2C2TRN = (addr & 0xFF00) >> 8; while (I2C2STATbits.TBF); while (I2C2STATbits.TRSTAT); I2C2TRN = addr & 0x00FF; while (I2C2STATbits.TBF); while (I2C2STATbits.TRSTAT); // Repeated Start Condition I2C2CONbits.RSEN = 1; while (I2C2CONbits.RSEN); // Send Device Address with Read Flag (0xA1) I2C2TRN = 0xA1; while (I2C2STATbits.TBF); while (I2C2STATbits.TRSTAT); // Read Data while (numbytes) { I2C2CONbits.RCEN = 1; I2C2STATbits.I2COV = 0; while (!I2C2STATbits.RBF); *data++ = I2C2RCV; numbytes--; // Send ACK if (numbytes) { I2C2CONbits.ACKDT = 0; I2C2CONbits.ACKEN = 1; while (I2C2CONbits.ACKEN); } } // Send NACK I2C2CONbits.ACKDT = 1; I2C2CONbits.ACKEN = 1; while (I2C2CONbits.ACKEN); // Stop Condition I2C2CONbits.PEN = 1; while (I2C2CONbits.PEN); return 0; } [/CODE] [/QUOTE]

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