User manual

LPCXpresso Experiment Kit - User’s Guide

Page 134

 5 push-buttons, signals GPIO_17-KEY, GPIO_18-KEY and GPIO_35-KEY are only

connected to U7 (PCA9532). The signals can be manually bridged to any other free pin in the

specific experiment.

 Buzzer, signal GPIO_7-BUZZ is not connected at all. The signal can be manually bridged to

any other free pin in the specific experiment.

 RGB-LED, signal GPIO_30-PWM is only connected to U7 (PCA9532). This is the signal

controlling the green LED. Note that signals GPIO_28-PWM and GPIO_29-PWM are both

connected to the LPC1114FN28 and U7. This is because U7 has built-in functionality for

PWM control so there is a possibility to experiment with this specifically.

 Quadrature encoder, signals GPIO_38-QA and GPIO_39-QB are only connected to U7

(PCA9532). The signals can be manually bridged to any other free pin in the specific

experiment.