User manual

LPCXpresso Experiment Kit - User’s Guide
Page 30
Copyright 2013 © Embedded Artists AB
7.2.1 Lab 1a: Control LED
We will start with controlling LED1 in the schematic, which is found in the schematic on page 4, upper
left corner. LED1’s cathode is connected to signal GPIO_4-LED-SSEL.LED1’s anode is connected to
+3.3V via a (current limiting) series resistance. Figure 4 illustrates were LED1 can be found in the
schematic. On schematic page 2, we can see that this signal is connected to PIO0_2 on the
LPCXpresso LPC1115 board. Figure 5 illustrates where to find the signal and also where to find the
+3.3V supply.
Figure 4 – LED1 on Schematic Page 4
Figure 5 – Signal GPIO_4-LED-SSEL on Schematic Page 2
As a first step, get a LED (representing LED1), a 330 ohm resistor (representing R4), two male-to-male
prototype cables and the breadboard from the components bag. Mount these on the breadboard and