mbedLCD.h

00001 #include "MCP23017.h"
00002 #include "WattBob_TextLCD.h"
00003 #define BACK_LIGHT_ON(INTERFACE) INTERFACE->write_bit(1,BL_BIT)
00004 #define BACK_LIGHT_OFF(INTERFACE) INTERFACE->write_bit(0,BL_BIT)
00005 #include <string>
00006 #include "chipNumbers.h"
00007 MCP23017 *par_port;
00008 WattBob_TextLCD *lcd;
00009 
00010 /*  void printLCD(const char * text)
00011  *  Take a character array and split and trim it into two lines, to be displayed on the WattBob LCD screen.
00012  */
00013 void printLCD(const char * text)
00014 {
00015     std::string txt_str = std::string(text); //Convert ther character array to a std::string,
00016     //to use in the string manipulation functions.
00017     lcd->reset();
00018     if(txt_str.length() > 32) {
00019         int length = txt_str.length();
00020         txt_str = txt_str.erase(32,length-32);
00021         lcd->locate(0,0);   //Going to new line
00022         text = txt_str.c_str();
00023     }
00024     if(txt_str.length() > 16) {
00025         string line1 = txt_str.substr(0,16);
00026         string line2 = txt_str.substr(16,16);
00027         lcd->locate(0,0);   //Going to new line
00028         lcd->printf(line1.c_str());
00029         lcd->locate(1,0);   //Going to new line
00030         lcd->printf(line2.c_str());
00031         lcd->locate(0,0);   //Going to new line
00032     }
00033     if(txt_str.length() <= 16) {
00034         lcd->locate(0,0);
00035         lcd->printf(text);
00036     }
00037 
00038 }
00039 
00040 /*  void printLCD(string txt_str)
00041  *  Take a string and split and trim it into two lines, to be displayed on the WattBob LCD screen.
00042  */
00043 void printLCD(string txt_str)
00044 {
00045     lcd->reset();
00046     if(txt_str.length() > 32) {
00047         int length = txt_str.length();
00048         txt_str = txt_str.erase(32,length-32);
00049         lcd->locate(0,0);   //Going to new line
00050 
00051     }
00052     if(txt_str.length() > 16) {
00053         string line1 = txt_str.substr(0,16);
00054         string line2 = txt_str.substr(16,16);
00055         lcd->locate(0,0);   //Going to new line
00056         lcd->printf(line1.c_str());
00057         lcd->locate(1,0);   //Going to new line
00058         lcd->printf(line2.c_str());
00059         lcd->locate(0,0);   //Going to new line
00060     }
00061     if(txt_str.length() <= 16) {
00062         lcd->locate(0,0);
00063         lcd->printf(&txt_str[0]);
00064     }
00065 
00066 }
00067 /*  void setupLCD()
00068  *  Setup the I2C communication line to the WattBob.
00069  */
00070 void setupLCD()
00071 {
00072     par_port = new MCP23017(p9, p10, 0x40);
00073     par_port->config(0x0F00, 0x0F00, 0x0F00); // configure MCP23017 chip on WattBob
00074     BACK_LIGHT_ON(par_port);
00075     lcd = new WattBob_TextLCD(par_port);
00076     lcd->reset();
00077 }
00078 /*  void printStoresChipValues()
00079  *  Print out the values of the stored chip values to the LCD.
00080  */
00081 void printStoredChipValues()
00082 {
00083     stringstream strs;
00084     strs << "Stored chip values";
00085     strs << "R:";
00086     strs << redAmount;
00087     strs << ", G:";
00088     strs << greenAmount;
00089     strs << ", B:";
00090     strs << blueAmount;
00091     string temp_str = strs.str();
00092     char const* pchar = temp_str.c_str();
00093     printLCD(pchar);
00094 }