I2C read & write operation for LTC4015
Hi,
Currently I am working on a stm32 & LTC4015 based smart charger project.
When I followed the data sheet the smbus or i2c read & write operation is given as below:-
SMBus WRITE WORD PROTOCOL:-
S SLAVE ADDRESS Wr A COMMAND CODE A DATA BYTE LOW A DATA BYTE HIGH A P
SMBus WRITE WORD WITH PEC PROTOCOL
S SLAVE ADDRESS Wr A COMMAND CODE A DATA BYTE LOW A DATA BYTE HIGH A PEC* A P
SMBus READ WORD PROTOCOL:-
S SLAVE ADDRESS Wr A COMMAND CODE A Sr SLAVE ADDRESS Rd A DATA BYTE LOW A DATA BYTE HIGH N P
SMBus READ WORD WITH PEC PROTOCOL
S SLAVE ADDRESS Wr A COMMAND CODE A Sr SLAVE ADDRESS Rd A DATA BYTE LOW A DATA BYTE HIGH A PEC* N P
SMBus ALERT RESPONSE ADDRESS PROTOCOL
S ALERT RESPONSE ADDRESS Rd A DEVICE ADDRESS Rd N P
SMBus ALERT RESPONSE ADDRESS PROTOCOL WITH PEC
S ALERT RESPONSE ADDRESS Rd A DEVICE ADDRESS Rd A PEC* N
And I am reading from ltc4015 registers like this :-
ret = HAL_I2C_Mem_Read(&hi2c1,LTC4015_DEVICE_ADDRESS_READ,0x03,I2C_MEMADD_SIZE_8BIT,(uint16_t*)(®ister_value2), 2, HAL_MAX_DELAY);
if (ret != HAL_OK)
{
Error_Handler();
}
and for writing:-
//Enable limit alerts
uint8_t dataBuffer0[2] = {0xBF,0xF0};
ret = HAL_I2C_Mem_Write(&hi2c1, LTC4015_DEVICE_ADDRESS_WRITE, 0x0D, I2C_MEMADD_SIZE_16BIT, dataBuffer0, 2, HAL_MAX_DELAY);
if (ret != HAL_OK)
{
Error_Handler();
}
Am I doing anything wrong?
So my question is how to use the read & write functions for successful r/w operation.
Kindly explain me if you are available.
Device - stm32l0
Thanks & Regards
Satyabrata Senapati(Firmware Developer)
Vasmed health sciences pvt ltd.
