7 Segment LED Displaydriver, I2C interface, SAA1064
Diff: SAA1064.h
- Revision:
- 0:48adc4a70511
- Child:
- 1:79cb73f852da
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/SAA1064.h Sun Sep 08 22:23:52 2013 +0000 @@ -0,0 +1,103 @@ +/* SAA1064 - I2C LED Driver used in multiplex mode (4x 7 Segments and Decimal Point) + * Copyright (c) 2013 Wim Huiskamp + * + * Released under the MIT License: http://mbed.org/license/mit + * + * version 0.2 Initial Release +*/ +#ifndef _SAA1064_H +#define _SAA1064_H + +//Address Defines for SAA1064 +#define SAA1064_SA0 0x70 +#define SAA1064_SA1 0x72 +#define SAA1064_SA2 0x74 +#define SAA1064_SA3 0x76 + +//Register Defines for SAA1064 +#define SAA1064_CTRL 0x00 +#define SAA1064_DIG1 0x01 +#define SAA1064_DIG2 0x02 +#define SAA1064_DIG3 0x03 +#define SAA1064_DIG4 0x04 + +//Control Register Defines for SAA1064 +//Static display (2 digits) or Multiplexed (4 digits) +#define SAA1064_MPX 0x01 +//Digits 1 and 2 On +#define SAA1064_B0 0x02 +//Digits 3 and 4 On +#define SAA1064_B1 0x04 +//Intensity of display +#define SAA1064_INT0 0x00 +#define SAA1064_INT1 0x10 +#define SAA1064_INT2 0x20 +#define SAA1064_INT3 0x30 +#define SAA1064_INT4 0x40 +#define SAA1064_INT5 0x50 +#define SAA1064_INT6 0x60 +#define SAA1064_INT7 0x70 + +//Default Mode: Multiplex On, All Digits On +#define SAA1064_CTRL_DEF (SAA1064_MPX | SAA1064_B0 | SAA1064_B1) + + +//Pin Defines for SAA1064 +#define D_L0 0x01 +#define D_L1 0x02 +#define D_L2 0x04 +#define D_L3 0x08 +#define D_L4 0x10 +#define D_L5 0x20 +#define D_L6 0x40 +#define D_L7 0x80 + +//Defines for Segments +const char SAA1064_SEGM[] = {0x3F, //0 + 0x06, //1 + 0x5B, //2 + 0x4F, //3 + 0x66, //4 + 0x6D, //5 + 0x7D, //6 + 0x07, //7 + 0x7F, //8 + 0x6F, //9 + 0x77, //A + 0x7C, //B + 0x39, //C + 0x5E, //D + 0x79, //E + 0x71}; //F + +#define SAA1064_DP 0x80 //Decimal Point +#define SAA1064_MINUS 0x40 //Minus Sign +#define SAA1064_BLNK 0x00 //Blank Digit +#define SAA1064_ALL 0xFF //All Segments On + + +/** Create an SAA1064 object connected to the specified I2C object and using the specified deviceAddress + * + * @param I2C &i2c the I2C port to connect to + * @param char deviceAddress the address of the SAA1064 +*/ +class SAA1064 { +public: + SAA1064(I2C *i2c, char deviceAddress = SAA1064_SA0); + char read(); + void write(char byte); + + void setIntensity(unsigned char intensity); + + void write(unsigned char digit1, unsigned char digit2, unsigned char digit3, unsigned char digit4); + + void writeInt(int value, unsigned char dp_digit=0, bool leading=true); + +protected: + I2C *_i2c; + unsigned char _slaveAddress; + + void _init(); +}; + +#endif \ No newline at end of file