Hi Team,
Did you have any example code for the I2C for RTC real time clock project and the configuration for I2C in HALCoGen?
Hi QJ Wang,
// Slave address
#define RV3129_ADDRESS 0x56
// Temperature Page
#define RV3129_TEMP 0x20
#define DATA_COUNT 1
/* Transmit Start Condition */
i2cSetStart(i2cREG1);
/* Configure address of Slave to talk to */
i2cSetSlaveAdd(i2cREG1, RV3129_ADDRESS);
/* Set mode as Master */
i2cSetMode(i2cREG1, I2C_MASTER);
/* Set direction to Transmitter */
/* Note: Optional - It is done in Init */
i2cSetDirection(i2cREG1, I2C_TRANSMITTER);
/* Send the Word Address */
i2cSendByte(i2cREG1, Slave_Word_address);
/* Set Stop after programmed Count */
i2cSetStop(i2cREG1);
/* Tranmit DATA_COUNT number of data in Polling mode */
i2cReceive(i2cREG1, DATA_COUNT, RX_Data_Master);
/* Wait until Bus Busy is cleared */
while(i2cIsBusBusy(i2cREG1) == true);
/* Wait until Stop is detected */
while(i2cIsStopDetected(i2cREG1) == 0);
/* Clear the Stop condition */
i2cClearSCD(i2cREG1);
/* Simple Dealya before starting Next Block */
/* Depends on how quick the Slave gets ready */
for(delay=0;delay<100000;delay++);
I have tried this code as per the Hercules I2C example but I did get any output for this RTC
Please help me to prepare the sequence.
Can you confirm me the configuration of I2C and Code ?
HI QJ Wang,
No, I didn't receive the data from RTC till now.
I have seen the code for Arduino board.
uint8_t RV3129::readRegister(uint8_t addr)
{
_i2cPort->beginTransmission(RV3129_ADDR);
_i2cPort->write(addr);
_i2cPort->endTransmission();
_i2cPort->requestFrom(RV3129_ADDR, (uint8_t)1);
if (_i2cPort->available()) {
return (_i2cPort->read());
}
else {
return (0xFF); //Error
}
}
bool RV3129::writeRegister(uint8_t addr, uint8_t val)
{
_i2cPort->beginTransmission(RV3129_ADDR);
_i2cPort->write(addr);
_i2cPort->write(val);
if (_i2cPort->endTransmission() != 0)
return (false); //Error: Sensor did not ack
return(true);
}
How to use this code as requestfrom API in TI API and the
beginTransmission API as
/* Clear Stop bit */
i2cREG1->MDR &= ~(I2C_STOP_COND);
/* Clear Start bit */
i2cREG1->MDR &= ~(I2C_START_COND);
/* Clear Repeat mode bit */
// Configure address of Slave to talk to
i2cSetSlaveAdd(i2cREG1, RV3129_WADDR); is 0xAC
How to give the count value is based on the data size ?
/* Configure Data count */
i2cSetCount(i2cREG1, Count+1);
Please confirm as soon as possible.
