sn54ls164w

SN54LS164W Shift Register Class

This class encapsulates the basic function of the SN54LS164W shift register using bit banging. It is simple and generic and can probably be used for many similar chips.

Usage

Instantiate the class, providing the three key pins (data, clear and clock). These will be configured as required by the class. Then use read() and write() functions to access their values directly or you can use the pinX.read() and pinX.write() methods to imitate the hardware.pinX functions. Note that read() only takes from the classes memory and doesn't actually read the values from the pins.

sr <- SN54LS164W(hardware.pinB, hardware.pinC, hardware.pinD);


// Toggle pin 0 every second.
testval <- 0;
function test() {
	    imp.wakeup(1, test);

		// Using the direct method
		sr.write(0, testval);

		// Using the legacy method
		sr.pinA.write(testval);

		testval = 1 - testval;
}
test();