1 JP18 GA0 ~ GA7 U13 Port A &JP19 GB0 ~ GB7  U13 Port B

2. JP25  AA0 ~ AA7   U14 Port A        JP24 BA0 ~ BA7     U14 Port B

3. JP20  GC0 ~ GC7   U15 Port A       JP21 GD0 ~ GD7     U15 Port B

4. JP22  DA0 ~ DA7   U16 Port A        JP23 EA0 ~ EA7     U16 Port B

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

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

7 R80, R81,R82  ( for U15 Address select A0,A1,A2 )

8. R88,R89,R90 ( for  U16 Address select  A0,A1,A2)

9. U13 (000)  23s17 -1  Port A,B     U14 (001)   23s17-2 Port A,B

10. U15 (002)  23s17 -3  Port A,B     U16 (003)   23s17-4 Port A,B

 23s17-4 - 64 GPIO board plug in Raspberry Pi Model B+ / B2 / B3

  23s17-4 plug in Raspberry Pi with our Rs-Pi 4Hub board   64 Blue LED "ON"

new test program    23s17-4port-v3.py  demo

new test program    23s17-4port-s-v103.py  demo

 new GUI interface output software     

23s17-4port-GUI.py    demo

Support our Pi_Scratch software   

 U1 to U4 spi 23s17  address 40,42,44,46 

 U1 to U2 spi 23s17  address 40,42 

 40 --> 1  42 --> 2  44 --> 3  46  --> 4

 48 --> 5  4a --> 6  4c --> 7  4e  --> 8

 Command "sp"+ "address(1-8)" + "a" +"bit(1 to 8)" for Port A

 Command "sp"+ "address(1-8)" + "b" +"bit(1 to 8)" for Port B

 Command "bits"+ "address(1-8)" + "a" +"bit(8 to 1)" for Port A

 Command "bits"+ "address(1-8)" + "b" +"bit(8 to 1)" for Port                                                                                                                                

  sp2b7 -->  spi address 2 Port B bit 7 ON/OFF

  sp3b4 -->  spi address 3 Port B bit 4 ON/OFF

  bits2b01010101 -->  address 2 port B from bit 8 to 11

 --> 01010101   

  bits2a01010101 -->  address 2 port A from bit 8 to 1

                      output  --> 01010101  

  bits2aoff  --> address 2 Port A all OFF/clear

  bits2aclr  --> address 2 Port A all OFF/clear