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 /*
00026  * Modified by Daniel Drew 11/13/2014 for use with 24ledbar backpack
00027  */
00028 
00029 #include "mbed.h"
00030 #include "Adafruit_GFX.h"
00031 
00032 #define LED_ON 1
00033 #define LED_OFF 0
00034 
00035 #define LED_RED 1
00036 #define LED_YELLOW 2
00037 #define LED_GREEN 3
00038  
00039 
00040 #define HT16K33_BLINK_CMD 0x80
00041 #define HT16K33_BLINK_DISPLAYON 0x01
00042 #define HT16K33_BLINK_OFF 0
00043 #define HT16K33_BLINK_2HZ  1
00044 #define HT16K33_BLINK_1HZ  2
00045 #define HT16K33_BLINK_HALFHZ  3
00046 
00047 #define HT16K33_CMD_BRIGHTNESS 0x0E
00048 
00049 // this is the raw HT16K33 controller
00050 class Adafruit_LEDBackpack {
00051  public:
00052   Adafruit_LEDBackpack(I2C *i2c);
00053   void begin(uint8_t _addr);
00054   void setBrightness(uint8_t b);
00055   void blinkRate(uint8_t b);
00056   void writeDisplay(void);
00057   void clear(void);
00058 
00059   uint16_t displaybuffer[8]; 
00060 
00061   void init(uint8_t a);
00062 
00063   protected:
00064     I2C *_i2c;
00065   
00066  private:
00067   uint8_t i2c_addr;
00068 };
00069 
00070 class Adafruit_8x8matrix : public Adafruit_LEDBackpack, public Adafruit_GFX {
00071  public:
00072   Adafruit_8x8matrix(I2C *i2c);
00073 
00074   void drawPixel(int16_t x, int16_t y, uint16_t color);
00075 
00076  private:
00077 };
00078 
00079 class Adafruit_24bargraph : public Adafruit_LEDBackpack {
00080  public:
00081   Adafruit_24bargraph(I2C *i2c);
00082 
00083   void setBar(uint8_t bar, uint8_t color);
00084 
00085  private:
00086 };