Hello I'm completely new to I2C protocol. but first is there any sample code for a Atmel microprocessor using I2C (or HDQ) talking to the BQ27510 fuel gauge,
Secondly would this quick mock code I made be able to access both the control register and the SOC register.
Thank you
//////////read command register/////////////
i2cSendStart();
i2cWaitForComplete();
i2cSendByte(0xaa); //writes to BQ
i2cWaitForComplete();
i2cSendByte(0x00); //control register
i2cWaitForComplete();
i2cSendStop();
i2cSendStart();
i2cWaitForComplete();
i2cSendByte(0xab); //reads from BQ
i2cWaitForComplete();
i2cReceiveByte(TRUE);
i2cWaitForComplete();
xm = i2cGetReceivedByte(); //high byte
i2cWaitForComplete();
i2cReceiveByte(TRUE);
i2cWaitForComplete();
xl = i2cGetReceivedByte(); //high byte
i2cWaitForComplete();
i2cReceiveByte(TRUE);
i2cSendStop();
i2cSendStart();
xo = xl|(xm << 8);
return xo;
}
void read_percent(void)
{
//0xaa write, 0xab read
uint8_t xm, xl;
//uint8_t xmh, xml, xlh, xll;
//long xo;
i2cSendStart();
i2cWaitForComplete();
i2cSendByte(0xaa); //writes to BQ
i2cWaitForComplete();
i2cSendByte(0x2c); //SOC register 0.2c for bq27510
i2cWaitForComplete();
i2cSendStop();
i2cSendStart();
i2cWaitForComplete();
i2cSendByte(0xab); //read from BQ
i2cWaitForComplete();
i2cReceiveByte(TRUE);
i2cWaitForComplete();
xm = i2cGetReceivedByte(); //high byte
i2cWaitForComplete();
i2cReceiveByte(TRUE);
i2cWaitForComplete();
xl = i2cGetReceivedByte(); //high byte
i2cWaitForComplete();
i2cReceiveByte(TRUE);
i2cSendStop();
i2cSendStart();