描述

樹莓派I2C 128 GPIO擴充板

1. JP4    U1 Port A       JP3     U1 Port B
2. JP7    U2 Port A       JP8     U2 Port B
3. JP2    U3 Port A       JP1     U3 Port B
4. JP5    U4 Port A       JP6     U4 Port B
5. JP11  U5 Port A       JP12    U5 Port B
6. JP13   U6 Port A       JP14   U6 Port B
7. JP16   U7 Port A       JP15   U7 Port B
8. JP10   U8 Port A       JP9     U8 Port B
9.   U1 (20)  23017 -1  Port A,B    U2 (21)   23017-2 Port A,B
10. U3 (22)  23017 -3  Port A,B    U4 (23)   23017-4 Port A,B
11. U5 (24)  23017 -1  Port A,B    U6 (25)   23017-2 Port A,B
12. U7 (26)  23017 -3  Port A,B    U8 (27)   23017-4 Port A,B
13. J1 i2c signal input  (PIN 1-4) GND, 5V, SDA, SCL

支援 Pi_Scratch

U1 to U4 i2c 23017 address 20,21,22,23
U5 to U8 i2c 23017 address 24,25,26,27

Command “i2”  + “address(20-27)” + “a” +”bit(1 to 8)” for Port A
Command “i2”  + “address(20-27)” + “b” +”bit(1 to 8)” for Port B
Command “bit”+ “address(20-27)” + “a” +”bit(8 to 1)” for Port A
Command “bit”+ “address(20-27)” + “b” +”bit(8 to 1)” for Port B

i221a1 –> i2c address 21 Port A bit 1 ON/OFF
i220b7 –> i2c address 20 Port B bit 7 ON/OFF
i222b4 –> i2c address 22 Port B bit 4 ON/OFF

bit22b01010101 –> address 22 port B from bit 8 to 1
output –> 01010101

bit20a01010101 –> address 20 port A from bit 8 to 1
output –> 01010101

bit21aoff –> address 21 Port A all OFF/clear
bit23aclr –> address 23 Port A all OFF/clear

相關資料：

led-21.py

led-22.py

23017-21.py

23017-22.py

23017-8port-s-v103.py

23017 Datasheet

商品內容：

1x Rs-Pi I2C 23017-8 – 128 GPIO board
1x Manual