espruino 74hc595 pin corresponding problem?

Hi,

Take a look at: http://www.espruino.com/ReferenceESPRUINOBOARD

And the Arduino example: http://arduino.cc/en/tutorial/ShiftOut

Looks like you need 3 wires - Data, Clock, and latch. Because Espruno does software SPI, you can actually use any 3 IO pins.

The code you might use is:

var spi = new SPI();
spi.setup({mosi: MY_DS_PIN, sck: MY_SH_CP_PIN });
spi.write(my_data, MY_ST_CP_PIN);