Hi
I am using the TI TPS6598x Host Interface Tool to execute the DBfg function (clearing the Dead battery flag of the TPS65982 PD Controller).
I used a sniffer to capture the I2C communication between the Host Interface Tool and TPS65982.
Can anyone advise why does it need to read the data in register 0x09 (Data1)? Thanks.
| I2C Activity | Description | Function |
| write to 0x27 ack data: 0x03 | Read 4 btyes of data from reg 0x03 (Mode) | A P P <SP> The PD Controller is fully functioning in the application firmware. |
| read to 0x27 ack data: 0x04 0x41 0x50 0x50 0x20 | Data = 41 50 50 20 (hex) | |
| write to 0x27 ack data: 0x08 0x04 0x44 0x42 0x66 0x67 | Write 4 bytes of data to reg ox08 (Cmd1): 44 42 66 67 | Execute function: DBfg |
| write to 0x27 ack data: 0x03 | Read 4 btyes of data from reg 0x03 (Mode) | A P P <SP> |
| read to 0x27 ack data: 0x04 0x41 0x50 0x50 0x20 | Data = 41 50 50 20 (hex) | |
| write to 0x27 ack data: 0x08 | Read 4 btyes of data from reg 0x08 (Cmd1) | The command DBfg is successfully processed. |
| read to 0x27 ack data: 0x04 0x00 0x00 0x00 0x00 | Data = 00 00 00 00 (hex) | |
| write to 0x27 ack data: 0x03 | Read 4 btyes of data from reg 0x03 (Mode) | A P P <SP> |
| read to 0x27 ack data: 0x04 0x41 0x50 0x50 0x20 | Data = 41 50 50 20 (hex) | |
| write to 0x27 ack data: 0x09 | Read 64 btyes of data from reg 0x09 (Data1) | ??? |
| read to 0x27 ack data: 0x40 0x00 | Data = 00 ……. | |
| write to 0x27 ack data: 0x03 | Read 4 btyes of data from reg 0x03 (Mode) | A P P <SP> |
| read to 0x27 ack data: 0x04 0x41 0x50 0x50 0x20 | Data = 41 50 50 20 (hex) | |
| write to 0x27 ack data: 0x03 | Read 4 btyes of data from reg 0x03 (Mode) | A P P <SP> |
| read to 0x27 ack data: 0x04 0x41 0x50 0x50 0x20 | Data = 41 50 50 20 (hex) |
Rgds
DanS
