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Introduction to Microcontroller Programming

About PICmicro Chips

Clocking Your PICmicro Devices

E-Blocks

Flowcode Step By Step

PICmicro Projects

Labs

Sharing A Port

<^< Understanding the Patch System | Course Index | Using ZIF Sockets >^>

There are times when you need to split a port into several sections, or where signals on a port need to be shared between two or more downstream E-blocks boards. In this case you need to use a splitter cable . As an example of this: supposing that you wanted to develop a system that used two external analogue sensors. The Sensor board only has the capability for one external analogue sensor, so you need to use a splitter cable and the patch system to make the appropriate connections. The resulting system would look something like this:

The splitter cable allows you to connect one upstream port to two downstream ports using IDC (Insulation Displacement Connector) connectors and ribbon cable. You can see that the analogue sensor input on the top board is the default connection: bit 3. On the lower board the link blocks are moved to the "patch" position and a small wire is used to connect the second analogue sensor to bit 2. The resulting system allows you to connect one analogue sensor to bit 3 and the other to bit 2 on the upstream board.

<^< Understanding the Patch System | Course index | Using ZIF Sockets >^>

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Page last modified on February 03, 2012, at 11:16 AM