A library for AQM0802A I2C connecting LCD module.
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KuAQM0802A.h
00001 #ifndef AQM0802A_H 00002 #define AQM0802A_H 00003 00004 #include "mbed.h" 00005 00006 /** 00007 * A library for AQM0802A I2C connecting LCD. 00008 */ 00009 class KuAQM0802A : public Stream { 00010 private: 00011 I2C &i2c; 00012 00013 public: 00014 00015 /** 00016 * Constractor of AQM0802A driver. 00017 * @param i2c I2C object 00018 */ 00019 explicit KuAQM0802A(I2C &i2c); 00020 00021 /** 00022 * Destractor 00023 */ 00024 ~KuAQM0802A(); 00025 00026 /** 00027 * Reset target device 00028 */ 00029 void reset(); 00030 00031 /** 00032 * Locate cursor 00033 * @param x Position X 00034 * @param y Position Y 00035 */ 00036 void locate(unsigned int x, unsigned int y); 00037 00038 /** 00039 * Print a character 00040 * @param character A character to print 00041 */ 00042 void print_char(const int character); 00043 00044 /** 00045 * Change LCD contrast 00046 * @param contrast LCD contrast (0-63) 00047 */ 00048 void set_contrast(unsigned int contrast); 00049 00050 // for Stream implementation 00051 virtual int _putc(int value) { print_char(value); return 1; }; 00052 virtual int _getc() { return -1; }; 00053 00054 private: 00055 void send_cmd(char cmd); 00056 00057 void send(bool CO, bool RS, char code); 00058 }; 00059 00060 #endif
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