COPTONIX I2C-RS232-Adapter Руководство - Страница 10

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6.2.4 SetSlvAdr
The default slave address is 0xFE (1111 1110). The "SetSlvAdr" command allows to
change the slave address of the adapter.
Byte
content
0
Slave Address
1
SetSlvAdr
2
Slave address
The new slave address is written to a temporary register and still not active. In order
to read/verify this new slave address, issue the command "ReadSlvAdr". If the
command "SaveInitSlvAdr" is issued, then the new slave address is saved into the
EEPROM and the I2C-Interface is initialised.
6.2.5 ReadSlvAdr
read / verify the new slave address that was written to the temporary register.
Byte
content
0
Slave Address (W)
1
ReadSlvAdr
Byte
Content
0
Slave Address (R)
1
Slave Address
2
New Slave Address
6.2.6 SaveInitSlvAdr
Save and initialize the new slave address.
Byte
Content
0
Slave Address
1
SaveInitSlvAdr
SetSlvAdr command (0x41)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
A7
A6
0
1
Slave Address(7:1)
ReadSlvAdr command (0x42)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
A7
A6
0
1
ReadSlvAdr Response
Bit 7
Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
A7
A6
Slave address of the selected device
New Slave Address (temporary register)
SaveInitSlvAdr command (0x43)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
A7
A6
0
1
A5
A4
A3
0
0
0
A5
A4
A3
0
0
0
A5
A4
A3
A5
A4
A3
0
0
0
A2
A1
0
0
0
1
0
A2
A1
0
0
1
0
A2
A1
1
A2
A1
0
0
1
1
Rev1.4 April 2014
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