Wim Huiskamp / Mbed 2 deprecated TextLCD_HelloWorld2

Hello World demo for Enhanced TextLCD lib.

Dependencies:   TextLCD mbed

Dependents:   Opener-6

The Enhanced TextLCD lib supports more display types than the original lib. Added support for User Defined Characters (UDCs), Backlight control and other features such as control through I2C and SPI port expanders and controllers with native I2C and SPI interfaces. See here for more info.

main.cpp

Committer:
wim
Date:
2014-06-17
Revision:
1:ef419b21167d
Parent:
0:a75049de1a82
Child:
2:c2978a6fa79a

File content as of revision 1:ef419b21167d:

// Hello World! for the TextLCD

#include "mbed.h"
#include "TextLCD.h"

// Host PC Communication channels
Serial pc(USBTX, USBRX); // tx, rx

void show_menu() {
    pc.printf("0: Exit\n\r");
    pc.printf("1: Show Menu\n\r");    
    pc.printf("2: Goto 0,0\n\r"); 
    pc.printf("3: Goto columns(),rows()\n\r");    
    pc.printf("4: cls()\n\r");        
    pc.printf("5: UDCs \n\r");            
    pc.printf("6: Fill\n\r");                
    pc.printf("7: Cursor On\n\r");                    
    pc.printf("8: Cursor Off\n\r");                        
    pc.printf("9: Text\n\r");                            
    pc.printf("A: Display On\n\r");                    
    pc.printf("B: Display Off\n\r");                        
    pc.printf("C: Backlight On\n\r");                    
    pc.printf("D: Backlight Off\n\r");                           
    pc.printf("P: init \n\r");                        
    pc.printf("\n\r");                
}


// I2C Communication
I2C i2c_lcd(p28,p27); // SDA, SCL
//I2C i2c_lcd(p9,p10); // SDA, SCL

// SPI Communication
SPI spi_lcd(p5, NC, p7); // MOSI, MISO, SCLK
//DigitalOut cs(p8);
//DigitalOut cs2(p9);

//TextLCD lcd2(p15, p16, p17, p18, p19, p20, TextLCD::LCD16x4); // rs, e, d4-d7  =ok
//TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x2); // rs, e, d4-d7 =ok
//TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x4); // rs, e, d4-d7 =ok
//TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD24x4); // rs, e, d4-d7 =ok
//TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD24x2); // rs, e, d4-d7 =ok
//TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD40x2); // rs, e, d4-d7 =ok

//TextLCD_I2C lcd(&i2c_lcd, 0x40, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type =ok
//TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD20x4); // I2C bus, PCF8574 Slaveaddress, LCD Type =ok

//Test Adafruit module, change #define
TextLCD_I2C lcd(&i2c_lcd, MCP23008_SA0, TextLCD::LCD20x4); // I2C bus, MCP23008 Slaveaddress, LCD Type =OK

//TextLCD_I2C lcd(&i2c_lcd, 0x42, TextLCD::LCD16x2, TextLCD::WS0010); // I2C bus, PCF8574 Slaveaddress, LCD Type, LCD Ctrl

//TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD24x4); // SPI bus, CS pin, LCD Type =ok
//TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x2); // SPI bus, CS pin, LCD Type =ok
//TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4); // SPI bus, CS pin, LCD Type =ok

//TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4, TextLCD::HD44780); // SPI bus, CS pin, LCD Type, LCD Ctrl =ok
//TextLCD_SPI lcd(&spi_lcd, p8, TextLCD::LCD40x4, TextLCD::WS0010); // SPI bus, CS pin, LCD Type, LCD Ctrl

//TextLCD_SPI lcd2(&spi_lcd, p9, TextLCD::LCD8x2B); // SPI bus, CS pin, LCD Type =ok
//TextLCD_SPI lcd2(&spi_lcd, p9, TextLCD::LCD16x1); // SPI bus, CS pin, LCD Type =ok 
//TextLCD_SPI lcd2(&spi_lcd, p9, TextLCD::LCD16x2); // SPI bus, CS pin, LCD Type (VFD) =ok

//TextLCD_SPI_N lcd(&spi_lcd, p8, p9, TextLCD::LCD16x2, NC, TextLCD::ST7032_3V3); // SPI bus, CS pin, RS pin, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032 =ok
//TextLCD_I2C_N lcd(&i2c_lcd, ST7032_SA, TextLCD::LCD16x2, NC, TextLCD::ST7032_3V3); // I2C bus, slaveaddress, LCDType=LCD16x2, BL=NC, LCDTCtrl=ST7032 


//TextLCD_I2C_N lcd(&i2c_lcd, PCF21XX_SA0, TextLCD::LCD12x3B, NC, TextLCD::PCF21XX_3V3); // I2C bus, slaveaddress, LCDType=LCD12x3B, BL=NC, LCDTCtrl=PCF21XX 
//TextLCD_I2C_N lcd(&i2c_lcd, PCF21XX_SA0, TextLCD::LCD12x4B, NC, TextLCD::PCF21XX_3V3); // I2C bus, slaveaddress, LCDType=LCD12x4B, BL=NC, LCDTCtrl=PCF21XX 
//TextLCD_I2C_N lcd(&i2c_lcd, PCF21XX_SA0, TextLCD::LCD24x1, NC, TextLCD::PCF21XX_3V3); // I2C bus, slaveaddress, LCDType=LCD24x1, BL=NC, LCDTCtrl=PCF21XX 
//TextLCD_I2C_N lcd(&i2c_lcd, PCF21XX_SA0, TextLCD::LCD24x2, NC, TextLCD::PCF21XX_3V3); // I2C bus, slaveaddress, LCDType=LCD24x2, BL=NC, LCDTCtrl=PCF21XX 

int main() {
//  int i=0;
  int count=0;
  bool running=true;
  char command;    
    
    pc.printf("LCD Test. Colums=%d, Rows=%d\n\r", lcd.columns(), lcd.rows());
      
//while (1) {
    for (int row=0; row<lcd.rows(); row++) {
      int col=0;
      
      pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));      
//      lcd.putc('-');
      lcd.putc('0' + row);      
      
      for (col=1; col<lcd.columns()-1; col++) {    
        lcd.putc('*');
      }

      pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));      
      lcd.putc('+');
        
    }    

//   wait_ms(500);    
//   lcd.cls();    // Test timing
//}
 

    lcd.setCursor(TextLCD::CurOff_BlkOn);

#if(0)
    lcd.setUDC(0, (char *) udc_AA);
    lcd.putc(0);    

    lcd.setUDC(1, (char *) udc_0E);
    lcd.putc(1);    

    lcd.setUDC(0, (char *) udc_0);
    lcd.putc(0);    
    lcd.setUDC(1, (char *) udc_1);
    lcd.putc(1);    
    lcd.setUDC(2, (char *) udc_2);
    lcd.putc(2);    
#endif

#if(1)
    lcd.setUDC(0, (char *) udc_Bat_Hi);
    lcd.setUDC(1, (char *) udc_Bat_Ha);
    lcd.setUDC(2, (char *) udc_Bat_Lo);
    lcd.setUDC(3, (char *) udc_AC);
    lcd.setUDC(4, (char *) udc_4);
    lcd.setUDC(5, (char *) udc_5);
    lcd.setUDC(6, (char *) udc_6);
    lcd.setUDC(7, (char *) udc_7);
#endif

#if(0)
    lcd.setUDC(0, (char *) udc_ch_1);
    lcd.setUDC(1, (char *) udc_ch_2);
    lcd.setUDC(2, (char *) udc_ch_3);
    lcd.setUDC(3, (char *) udc_ch_4);
    lcd.setUDC(4, (char *) udc_ch_yr);
    lcd.setUDC(5, (char *) udc_ch_mo);
    lcd.setUDC(6, (char *) udc_ch_dy);
    lcd.setUDC(7, (char *) udc_ch_mi);
#endif

    lcd.putc(0);    
    lcd.putc(1);    
    lcd.putc(2);    
    lcd.putc(3);    
    lcd.putc(4);    
    lcd.putc(5);    
    lcd.putc(6);    
    lcd.putc(7);    

#if(0)
    lcd2.setUDC(0, (char *) udc_Bat_Hi);
    lcd2.setUDC(1, (char *) udc_Bat_Ha);
    lcd2.setUDC(2, (char *) udc_Bat_Lo);
    lcd2.setUDC(3, (char *) udc_AC);
    lcd2.putc(0);    
    lcd2.putc(1);    
    lcd2.putc(2);    
    lcd2.putc(3);    
#endif    

#if(0)    
    while (1) {
      lcd.locate(4, 2);      
      lcd.printf("Count=%3d", i);      
      i++;
      if (i==100) i=0; 
      
      wait(1); 
    }
#endif    
    
    pc.printf("Hello World!\n\r");
    show_menu();
      
    while(running) {
       
       count++;
    
       if(pc.readable()) {
         command = pc.getc();       
         pc.printf("command= %c \n\r", command);         

         switch (command) {
          case '0' :
                     pc.printf("Done\n\r");                    
                     running = false;  
                     break;
          
          case '1' :
                     show_menu();
                     break;
                    
          case '2' :
                     pc.printf("Goto 0,0\n\r"); 
                     lcd.locate(0, 0);                           
//                     lcd2.locate(0, 0);                                                
                     break;
          
          case '3' :
                     pc.printf("Goto Col,Row\n\r"); 
                     lcd.locate( (lcd.columns() - 1), (lcd.rows() - 1));                           
//                     lcd2.locate( (lcd.columns() - 1), (lcd.rows() - 1));                                                
                     break;

          case '4' :
                     pc.printf("cls()\n\r");        
                     lcd.cls();                           
//                     lcd2.cls();                                                
                     break;

          case '5' :
                     pc.printf("UDCs\n\r");                  
                     lcd.locate(2, 0);      
                     lcd.putc(0);    
                     lcd.putc(1);                         
                     lcd.putc(2);                         
                     lcd.putc(3);    
                     lcd.putc(4);                         
                     lcd.putc(5);                         
                     lcd.putc(6);    
                     lcd.putc(7);                         
                                          
                     lcd.locate(4, lcd.rows()-1);      
                     lcd.putc(0);    
                     lcd.putc(1);                         
                     lcd.putc(2);                         
                     lcd.putc(3);                                              


//                     lcd2.locate(4, lcd.rows()-1);      
//                     lcd2.putc(0);    
//                     lcd2.putc(1);                         
//                     lcd2.putc(2);                         
//                     lcd2.putc(3);                                              
         
                     break;
          case '6' :
                     pc.printf("Fill\n\r");                            
                     lcd.locate(0, 0);                
                     for (int row=0; row<lcd.rows(); row++) {
                       int col=0;
      
//                       pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));      
                       //      lcd.putc('-');
                       lcd.putc('0' + row);      
      
                       for (col=1; col<lcd.columns()-1; col++) {    
                         lcd.putc('*');
                       }

//                       pc.printf("MemAddr(Col=%d, Row=%d)=0x%02X\n\r", col, row, lcd.getAddress(col, row));      
                       lcd.putc('+');
                     }  
          
                     break;

          case '7' :
                     pc.printf("Cursor 0n\n\r");    
                     lcd.setCursor(TextLCD::CurOff_BlkOn);                                             
//                     lcd2.setCursor(TextLCD::CurOff_BlkOn);                                                       
                     break;

          case '8' :
                     pc.printf("Cursor 0ff\n\r");    
                     lcd.setCursor(TextLCD::CurOff_BlkOff);                                             
//                     lcd2.setCursor(TextLCD::CurOff_BlkOff);                                                       
                     break;

          case '9' :
                     pc.printf("Text\n\r");    
                     lcd.locate(0, 0);                                                
                     lcd.printf(" Hello mbed\n");                            
                     lcd.printf("   Native I2C\n");                                                 
//                     lcd2.printf("Hello mbed\n");                            

#if(0)  
  // Needed for PCF2116C and PCF2116K
                     lcd.putc('H' ^ 0x80);
                     lcd.putc('e' ^ 0x80);
                     lcd.putc('l' ^ 0x80);
                     lcd.putc('l' ^ 0x80);
                     lcd.putc('o' ^ 0x80);
                     lcd.putc(' ' ^ 0x80);
                     lcd.putc('m' ^ 0x80);
                     lcd.putc('b' ^ 0x80);
                     lcd.putc('e' ^ 0x80);
                     lcd.putc('d' ^ 0x80);                      
                     lcd.putc('\n');                      
                     lcd.putc('I' ^ 0x80);
                     lcd.putc('2' ^ 0x80);
                     lcd.putc('C' ^ 0x80);
                     lcd.putc(' ' ^ 0x80);
                     lcd.putc('P' ^ 0x80);
                     lcd.putc('C' ^ 0x80);
                     lcd.putc('F' ^ 0x80);
                     lcd.putc('2' ^ 0x80);                      
                     lcd.putc('1' ^ 0x80);
                     lcd.putc('1' ^ 0x80);
                     lcd.putc('6' ^ 0x80);                     
#endif
                                                    
                     break;

          case 'A' :
                     pc.printf("Display On\n\r");   
                     lcd.setMode(TextLCD::DispOn);                                 
//                     lcd2.setMode(TextLCD::DispOn);                                                      
                     break;

          case 'B' :
                     pc.printf("Display Off\n\r");                                 
                     lcd.setMode(TextLCD::DispOff);                                                     
//                     lcd2.setMode(TextLCD::DispOff);                                                                          
                     break;

          case 'C' :
                     pc.printf("Backlight On\n\r");   
                     lcd.setBacklight(TextLCD::LightOn);                                 
//                     lcd2.setBacklight(TextLCD::LightOn);                                                      
                     break;

          case 'D' :
                     pc.printf("Backlight Off\n\r");                                 
                     lcd.setBacklight(TextLCD::LightOff);                                                     
//                     lcd2.setBacklight(TextLCD::LightOff);                                                                          
                     break;


//          case 'E' :
//                     pc.printf("Test nibble\n\r");                                 
//                     for (int i=0; i<16; i++) {
//                       lcd._writeNibble(i);
//                       wait(1);
//                     }
//                     break;

          case 'P' :
//test
                    lcd._initCtrl();
                    break;
                    
          default :
                    lcd.putc(command);          
//                    lcd.putc(command ^ 0x80);   // Needed for PCF2116C and PCF2116K
//                    lcd2.putc(command);                              
                    break;
                              
        } //switch
      }//if
    }//while

    pc.printf("Bye World!\n\r");      
}