Adafruit_LEDBackpack.h

00001 /*************************************************** 
00002   This is a library for our I2C LED Backpacks
00003 
00004   Designed specifically to work with the Adafruit LED Matrix backpacks 
00005   ----> http://www.adafruit.com/products/
00006   ----> http://www.adafruit.com/products/
00007 
00008   These displays use I2C to communicate, 2 pins are required to 
00009   interface. There are multiple selectable I2C addresses. For backpacks
00010   with 2 Address Select pins: 0x70, 0x71, 0x72 or 0x73. For backpacks
00011   with 3 Address Select pins: 0x70 thru 0x77
00012 
00013   Adafruit invests time and resources providing this open source code, 
00014   please support Adafruit and open-source hardware by purchasing 
00015   products from Adafruit!
00016 
00017   Written by Limor Fried/Ladyada for Adafruit Industries.  
00018   BSD license, all text above must be included in any redistribution
00019  ****************************************************/
00020  
00021  /*
00022  *  Modified by Luiz Hespanha (http://www.d3.do) 8/16/2013 for use in LPC1768
00023  */
00024 
00025 #include "mbed.h"
00026 #include "Adafruit_GFX.h"
00027 #include "myi2c.h"
00028 
00029 #define LED_ON 1
00030 #define LED_OFF 0
00031 
00032 #define LED_RED 1
00033 #define LED_YELLOW 2
00034 #define LED_GREEN 3
00035  
00036 
00037 
00038 #define HT16K33_BLINK_CMD 0x80
00039 #define HT16K33_BLINK_DISPLAYON 0x01
00040 #define HT16K33_BLINK_OFF 0
00041 #define HT16K33_BLINK_2HZ  1
00042 #define HT16K33_BLINK_1HZ  2
00043 #define HT16K33_BLINK_HALFHZ  3
00044 
00045 #define HT16K33_CMD_BRIGHTNESS 0x0E
00046 
00047 // this is the raw HT16K33 controller
00048 class Adafruit_LEDBackpack {
00049  public:
00050   Adafruit_LEDBackpack(myI2C *i2c);
00051   void begin(uint8_t _addr);
00052   void setBrightness(uint8_t b);
00053   void blinkRate(uint8_t b);
00054   void writeDisplay(void);
00055   void clear(void);
00056 
00057   uint16_t displaybuffer[16]; 
00058 
00059   void init(uint8_t a);
00060 
00061   protected:
00062     myI2C *_i2c;
00063   
00064  private:
00065   uint8_t i2c_addr;
00066 };
00067 
00068 class Adafruit_8x8matrix : public Adafruit_LEDBackpack, public Adafruit_GFX {
00069  public:
00070   Adafruit_8x8matrix(myI2C *i2c);
00071 
00072   virtual void drawPixel(int16_t x, int16_t y, uint16_t color);
00073 
00074  private:
00075 };