描述

樹莓派 I2C – 32 GPIO 擴充板(精簡版)

I2C  detect  status

20  -> MCP23008        48  -> tmp102      50  -> 24c32       60    ->  MCP4725     68 -> RTC DS1307

21 , 22 -> 23017 x2

use 23017-21.py  set each bit to be High or Low

our new output test program     23017-2port-s-v103.py   display all 32 GPIO status

1. JP23  GA0 ~ GA7   U13 Port A       JP24 AA0 ~ AA7     U13 Port B

2. JP25  BA0 ~ BA7   U14 Port A        JP26 GB0 ~ BG7     U14 Port B

3 R61,R62,R63  ( for U13 Address select A0,A1,A2 )

4. R64,R65,R66 ( for  U14 Address select  A0,A1,A2)

5. U13 (21)  23017 -1  Port A,B

6. U14 (22)   23017-2 Port A,B

7. pin out 2X10 ,

Bank A(1-10)  GPIO (0,1,2,3,4,5,6,7,GND, INTA)

Bank B (1-10)  GPIO (0,1,2,3,4,5,6,7,GND, INTB)

*****    23017 Datasheet

A0, A1, A2 address

*  right side GND low – 0      * left side Vcc High – 1

000     –     20              001     –     21              010     –     22         011     –     23

100     –     24               101    –      25             110    –      26         111    –      27

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U1 to U2 i2c 23017  address 21,22

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

i222b4 –>  i2c address 22 Port B bit 4 ON/OFF

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

output  –> 01010101

bit21a01010101 –>  address 21 port A from bit 8 to 1

output  –> 01010101

bit21aoff  –> address 21 Port A all OFF/clear

bit21boff  –> address 21 Port B all OFF/clear

bit22aoff  –> address 22 Port A all OFF/clear

Download sample program 

 led-21.py   led-22.py  23017-21.py  23017-22.py

 23017-2port-s-v103.py

 

Package Content

1x Rs-Pi I2C 23017-2  32 GPIO board

1x User Manual