Hallo E2E Community,
I am an electronics technician in education and I need some help.
First of all I use the PIC33ep512mu810 uC. The Program is coded on MPLAB.
I want to monitor three Batteries parallel with three BQ27510-G3.
I tried to read the device type from the BQ27510-G3 but it doesn't work.
I measured the Bus with the oscilloscope and saw all acknowledge and not acknowledge on the right place.
But I still get no Data!
So I tried some different command arrangements.
Butt still nothing works.
I think it may be a definition, "command structure" or schematic mistake.
That' s the schematic:
And that's my implemented code to read the Device Type:
I2C1CONbits.SEN = 1;
while(I2C1CONbits.SEN == 1);
while(I2C1STATbits .TRSTAT == 1);
I2C1TRN = 0xAA;
while(I2C1STATbits .TRSTAT == 1);
while(I2C1STATbits .TBF == 1);
while(I2C1STATbits .TRSTAT == 1);
I2C1TRN = 0x00;
while(I2C1STATbits .TRSTAT == 1);
while(I2C1STATbits .TBF == 1);
while(I2C1STATbits .TRSTAT == 1);
I2C1TRN = 0x01;
while(I2C1STATbits .TRSTAT == 1);
while(I2C1STATbits .TBF == 1);
while(I2C1STATbits .TRSTAT == 1);
I2C1TRN = 0x00;
while(I2C1STATbits .TRSTAT == 1);
while(I2C1STATbits .TBF == 1);
I2C1CONbits.PEN = 1;
while(I2C1CONbits.PEN);
I2C1CONbits.SEN = 1;
while(I2C1CONbits.SEN == 1);
while(I2C1STATbits .TRSTAT == 1);
I2C1TRN = 0xAA;
while(I2C1STATbits .TRSTAT == 1);
while(I2C1STATbits .TBF == 1);
while(I2C1STATbits .TRSTAT == 1);
I2C1TRN = 0x00;
while(I2C1STATbits .TRSTAT == 1);
while(I2C1STATbits .TBF == 1);
I2C1CONbits.RSEN = 1;
while(I2C1CONbits.RSEN == 1);
while(I2C1STATbits .TRSTAT == 1);
I2C1TRN = 0xAB;
while(I2C1STATbits .TRSTAT == 1);
while(I2C1STATbits .TBF == 1);
I2C1CONbits.RCEN = 1;
while(I2C1STATbits .RBF ==0);
I2Cread1 = I2C2RCV;
while(I2C1CONbits.RCEN ==1);
I2C1CONbits.ACKDT=0;
I2C1CONbits.RCEN = 1;
while(I2C1STATbits .RBF ==0);
I2Cread2 = I2C2RCV;
while(I2C1CONbits.RCEN ==1);
I2C1CONbits.ACKDT=1;
I2C1CONbits.PEN = 1;
while(I2C1CONbits.PEN);
I can't see the mistake.
Thanks for help:)
