Christian Lerche
This program is for writing to PCA9532 on the LPCXpresso Base Board.
Revision 0:8dffae878f54, committed 2010-02-06
- Comitter:
- Lerche
- Date:
- Sat Feb 06 06:32:14 2010 +0000
- Commit message:
Changed in this revision
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9532.cpp Sat Feb 06 06:32:14 2010 +0000
@@ -0,0 +1,21 @@
+#include "PCA9532.h"
+#include "mbed.h"
+using namespace mbed;
+PCA9532::PCA9532(PinName sda, PinName scl, int addr)
+ : _i2c(sda,scl) {
+ _addr = addr;
+ }
+
+int PCA9532::read(void) {
+ char foo[1];
+ _i2c.read(_addr,foo,1);
+ return (foo[0]);
+ }
+
+void PCA9532::write(int command, int data) {
+ char foo[2];
+ foo[0] = command;
+ foo[1] = data;
+ _i2c.write(_addr,foo,2);
+ return;
+ }
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/PCA9532.h Sat Feb 06 06:32:14 2010 +0000
@@ -0,0 +1,55 @@
+/* MIDI class for mbed Microcontroller
+ * Copyright (c) 2008, cstyles -- Modified by Lerche for PCA9532
+ */
+#include "mbed.h"
+#ifndef MBED_PCA9532_H
+#define MBED_PCA9532_H
+#define INPUT0 0x00
+#define INPUT1 0x01
+#define PSC0 0x02
+#define PWM0 0x03
+#define PSC1 0x04
+#define PWM1 0x05
+#define LS0 0x06
+#define LS1 0x07
+#define LS2 0x08
+#define LS3 0x09
+
+/* Class: PCA9532
+ * Abstraction for the LED dimmer on LPCXpresso Base Board
+ */
+
+namespace mbed {
+class PCA9532 {
+ public:
+ /* Constructor: PCA9532
+ * Create an instance of the PCA9532 connected to specfied I2C pins, with the specified address.
+ *
+ * Variables:
+ * sda - The I2C data pin (p28)
+ * scl - The I2C clock pin (p27)
+ * addr - The address of this instance (0xC0)
+ */
+ PCA9532 (PinName sda, PinName scl, int addr);
+ /* Function: read
+ * Read the IO pin level
+ *
+ * Variables:
+ * none
+ */
+ int read (void);
+ /* Function: write
+ * Write the IO pin levels / Turn on LEDs
+ *
+ * Variables:
+ * data - An in, though only the bottom 8 bits are used
+ * command - Where to put the data.
+ */
+ void write (int command, int data);
+
+ private :
+ I2C _i2c;
+ int _addr;
+ };
+}
+#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sat Feb 06 06:32:14 2010 +0000
@@ -0,0 +1,11 @@
+#include "PCA9532.h" // First try making header files. Maybe it works?
+#include "mbed.h"
+
+PCA9532 LED(p28, p27, 0xC0); // sda, scl, addr
+DigitalOut l1(LED1);
+
+int main() {
+ LED.write(LS0, 0x55); // Control register (First four LEDs)
+ wait(1);
+ l1=1;
+}
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed.bld Sat Feb 06 06:32:14 2010 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed/builds/49a220cc26e0