uint32_t i2c_read_buff(uint32_t dev_addr, uint8_t reg, uint8_t * dat, uint8_t n){
uint32 rc = 0;
int i = 0;
rc = I2C_I2CMasterSendStart(dev_addr, I2C_I2C_WRITE_XFER_MODE);
/* Error Checking */
if(rc != I2C_I2C_MSTR_NO_ERROR){
LOG_ERROR("Device Not On Bus %02x rc = %i", dev_addr, rc);
I2C_I2CMasterSendStop();
return HAPTIC_WRITE_ERROR;
}
I2C_I2CMasterWriteByte( reg);
I2C_I2CMasterSendRestart(dev_addr, I2C_I2C_READ_XFER_MODE);
/* Copy In the Approprate ammount of data */
for(i = 0; i < (n - 1); i++){
dat[i] = (uint8_t) I2C_I2CMasterReadByte(I2C_I2C_ACK_DATA);
}
/* For the last read make sure to send a NACK */
dat[i] = (uint8_t) I2C_I2CMasterReadByte(I2C_I2C_NAK_DATA);
rc = I2C_I2CMasterSendStop();
return rc;
}
/*******************************************************************************
* Function Name: DS1307_ReadTimeToStruct
********************************************************************************
*
* Summary:
* Read real time from chip DS1307
*
* Return:
* status the I2C connect
*
*******************************************************************************/
static uint32 DS1307_ReadTimeToStruct(void)
{
uint8_t data[DS1307_NUMBER_OF_BYTES];
uint32_t status;
int i;
I2C_Start();
/*reset pointer register reading*/
//I2C_I2CMasterClearStatus();
status = I2C_I2CMasterSendStart(DS1307_SLAVE_ADRESS,I2C_I2C_WRITE_XFER_MODE);
if(status == I2C_I2C_MSTR_NO_ERROR)
{
I2C_I2CMasterWriteByte(DS1307_NULL_ADRESS);
}
else
{
/*error connect from DS1307*/
return status;
}
I2C_I2CMasterSendStop();
/*read data*/
I2C_I2CMasterClearStatus();
status = I2C_I2CMasterSendStart(DS1307_SLAVE_ADRESS,I2C_I2C_READ_XFER_MODE);
if(I2C_I2C_MSTR_NO_ERROR == status)
{
/*write data in buffer*/
for(i=0; i<DS1307_NUMBER_OF_BYTES; i++)
{
if(i < DS1307_NUMBER_OF_BYTES-1)
{
data[i] = I2C_I2CMasterReadByte(I2C_I2C_ACK_DATA);
}
else
{
data[i] = I2C_I2CMasterReadByte(I2C_I2C_NAK_DATA);
}
}
}
I2C_I2CMasterSendStop();
I2C_Stop();
/*write data from buffer in struct*/
DS1307_currentTimeDate.second = (data[DS1307_SEC_ADRESS]& DS1307_SEC_MASK)+(((data[DS1307_SEC_ADRESS]&DS1307_10_SEC_MASK)>>4)*10);
DS1307_currentTimeDate.minutes = (data[DS1307_MIN_ADRESS]& DS1307_MIN_MASK)+(((data[DS1307_MIN_ADRESS]&DS1307_10_MIN_MASK)>>4)*10);
DS1307_currentTimeDate.timeFormat = (data[DS1307_HOUR_ADRESS] & DS1307_TIME_FORMAT_MASK)>>6;
if(DS1307_currentTimeDate.timeFormat == DS1307_12TIME_FORMAT)
{
DS1307_currentTimeDate.hours = (data[DS1307_HOUR_ADRESS]& DS1307_HOUR_MASK)+(((data[DS1307_HOUR_ADRESS]&DS1307_10_12HOUR_MASK)>>4)*10);
DS1307_currentTimeDate.AmRm = (data[DS1307_HOUR_ADRESS]&DS1307_AM_RM_MASK)>>5;
}
uint32_t i2c_read_reg(uint32_t dev_addr, uint8_t reg){
uint32_t data = 0;
uint32_t rc;
rc = I2C_I2CMasterSendStart(dev_addr, I2C_I2C_WRITE_XFER_MODE);
/* Error Checking */
if(rc != I2C_I2C_MSTR_NO_ERROR){
LOG_ERROR("Device Not On Bus %02x rc = %i", dev_addr, rc);
I2C_I2CMasterSendStop();
return HAPTIC_WRITE_ERROR;
}
I2C_I2CMasterWriteByte( reg);
I2C_I2CMasterSendRestart(dev_addr, I2C_I2C_READ_XFER_MODE);
/* For the last read make sure to send a NACK */
data = I2C_I2CMasterReadByte(I2C_I2C_NAK_DATA);
LOG_TRACE( "Read Reg: %02x %02x" , reg, data);
I2C_I2CMasterSendStop();
return data;
}