Thomas Butler
Program to demonstrate NXP semiconductor's PCA9955B chip working with the BBC micro:bit
Dependencies: PCA995xA microbit
Fork of
PCA9955A_Hello
by 
InetrfaceProducts NXP
This is a simple program that allows you to control each port on a PCA9955B connected over i2c to a BBC micro:bit using a simple USB serial communication program.
I've written it to work with the 2 digit SMD soldering kit I designed. Drop me an email at tb942@hotmail.co.uk for further info on that...
Diff: main.cpp
- Revision:
- 0:ec8cc77909e5
- Child:
- 1:8b5c26cc269c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Wed Feb 25 06:45:58 2015 +0000
@@ -0,0 +1,19 @@
+#include "mbed.h"
+
+#include "PCA9955A.h"
+PCA9955A led_cntlr( p28, p27, 0x02 ); // SDA, SCL, Slave_address(option)
+
+int main1()
+{
+ led_cntlr.current( ALLPORTS, 1.0 ); // Set all ports output current 100%
+
+ while(1) {
+ for ( int port = 0; port < led_cntlr.number_of_ports(); port++ ) {
+ for ( int i = 1; i <= 100; i++ ) {
+ led_cntlr.pwm( port, (float)i / 100.0 );
+ wait( 0.01 );
+ }
+ }
+ led_cntlr.pwm( ALLPORTS, 0.0 ); // Set all ports output PWM 0%
+ }
+}