I2C...
Dependents: Timer_TestOverflow
Fork of TextLCD by
Diff: TextLCD.cpp
- Revision:
- 27:22d5086f6ba6
- Parent:
- 26:bd897a001012
- Child:
- 28:30fa94f7341c
diff -r bd897a001012 -r 22d5086f6ba6 TextLCD.cpp --- a/TextLCD.cpp Fri May 30 15:05:13 2014 +0000 +++ b/TextLCD.cpp Fri Jun 13 19:02:26 2014 +0000 @@ -49,28 +49,25 @@ // Select and configure second LCD controller when needed if(_type==LCD40x4) { - _ctrl_idx=_LCDCtrl_1; // Select 2nd controller + _ctrl_idx=_LCDCtrl_1; // Select 2nd controller - _initCtrl(); // Init 2nd controller + _initCtrl(); // Init 2nd controller // Secondary LCD controller Clearscreen - _writeCommand(0x01); // cls, and set cursor to 0 + _writeCommand(0x01); // cls, and set cursor to 0 wait_ms(10); // The CLS command takes 1.64 ms. - // Since we are not using the Busy flag, Lets be safe and take 10 ms - + // Since we are not using the Busy flag, Lets be safe and take 10 ms } // Select and configure primary LCD controller - _ctrl_idx=_LCDCtrl_0; // Select primary controller + _ctrl_idx=_LCDCtrl_0; // Select primary controller _initCtrl(); // Init primary controller // Primary LCD controller Clearscreen - _writeCommand(0x01); // cls, and set cursor to 0 - + _writeCommand(0x01); // cls, and set cursor to 0 wait_ms(10); // The CLS command takes 1.64 ms. - // Since we are not using the Busy flag, Lets be safe and take 10 ms - + // Since we are not using the Busy flag, Lets be safe and take 10 ms } /** Init the LCD controller @@ -92,54 +89,68 @@ wait_us(40); // most instructions take 40us // Display is now in 4-bit mode + // Note: 4 bit mode is ignored for native SPI and I2C devices // Device specific initialisations for DC/DC converter to generate VLCD or VLED switch (_ctrl) { case ST7036: // ST7036 controller: Initialise Voltage booster for VLCD. VDD=5V // Note: supports 1,2 or 3 lines - _writeByte( 0x29 ); // 4-bit Databus, 2 Lines, Select Instruction table 1 + _writeByte( 0x29 ); // 4-bit Databus, 2 Lines, Select Instruction Set = 1 wait_ms(30); // > 26,3ms _writeByte( 0x14 ); // Bias: 1/5, 2-Lines LCD wait_ms(30); // > 26,3ms _writeByte( 0x55 ); // Icon off, Booster on, Set Contrast C5, C4 wait_ms(30); // > 26,3ms - _writeByte( 0x6d ); // Voltagefollower On, Ampl ratio Rab2, Rab1, Rab0 + _writeByte( 0x6D ); // Voltagefollower On, Ampl ratio Rab2, Rab1, Rab0 wait_ms(200); // > 200ms! _writeByte( 0x78 ); // Set Contrast C3, C2, C1, C0 wait_ms(30); // > 26,3ms - _writeByte( 0x28 ); // Return to Instruction table 0 + _writeByte( 0x28 ); // Return to Instruction Set = 0 wait_ms(50); break; case ST7032_3V3: // ST7032 controller: Initialise Voltage booster for VLCD. VDD=3V3 - - _writeByte( 0x1c ); //Internal OSC frequency adjustment 183HZ, bias will be 1/4 + +// _writeByte( 0x39 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Select Instruction Set = 1 + _writeByte( 0x29 ); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1 + //Note: 4 bit mode is ignored for native SPI and I2C devices + wait_us(30); + _writeByte( 0x1C ); //Internal OSC frequency adjustment 183HZ, bias will be 1/4 wait_us(30); _writeByte( 0x73 ); //Contrast control low byte wait_us(30); _writeByte( 0x57 ); //booster circuit is turned on. /ICON display off. /Contrast control high byte wait_us(30); - _writeByte( 0x6c ); //Follower control + _writeByte( 0x6C ); //Follower control wait_us(50); - _writeByte( 0x0c ); //DISPLAY ON, not needed +// _writeByte( 0x0C ); //DISPLAY ON, not needed +// _writeByte( 0x38 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Return to Instruction Set = 0 + _writeByte( 0x28 ); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0 + //Note: 4 bit mode is ignored for native SPI and I2C devices wait_us(30); break; //Check and fix booster disable case ST7032_5V: // ST7032 controller: Disable Voltage booster for VLCD. VDD=5V - - _writeByte( 0x1c ); //Internal OSC frequency adjustment 183HZ, bias will be 1/4 +// _writeByte( 0x39 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Instruction Set = 1 + _writeByte( 0x29 ); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Select Instruction Set = 1 + //Note: 4 bit mode is ignored for native SPI and I2C devices + wait_us(30); + _writeByte( 0x1C ); //Internal OSC frequency adjustment 183HZ, bias will be 1/4 wait_us(30); _writeByte( 0x73 ); //Contrast control low byte wait_us(30); _writeByte( 0x57 ); //booster circuit is turned on. /ICON display off. /Contrast control high byte wait_us(30); - _writeByte( 0x6c ); //Follower control + _writeByte( 0x6C ); //Follower control wait_us(50); - _writeByte( 0x0c ); //DISPLAY ON --> remove, done later? +// _writeByte( 0x0C ); //DISPLAY ON --> remove, done later? +// _writeByte( 0x38 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot, Instruction Set = 0 + _writeByte( 0x28 ); //FUNCTION SET 4 bit, N=1 2-line display mode, 5*7dot, Return to Instruction Set = 0 + //Note: 4 bit mode is ignored for native SPI and I2C devices wait_us(30); break; @@ -208,7 +219,8 @@ // All other LCD types are initialised as 2 Line displays (including LCD40x4) default: _writeCommand(0x28); // Function set 001 DL N F - - - // DL=0 (4 bits bus) + // DL=0 (4 bits bus) + // Note: 4 bit mode is ignored for native SPI and I2C devices // N=1 (2 lines) // F=0 (5x7 dots font, only option for 2 line display) // - (Don't care) @@ -240,8 +252,7 @@ _setCursorAndDisplayMode(_currentMode, CurOff_BlkOff); // Second LCD controller Clearscreen - _writeCommand(0x01); // cls, and set cursor to 0 - + _writeCommand(0x01); // cls, and set cursor to 0 wait_ms(10); // The CLS command takes 1.64 ms. // Since we are not using the Busy flag, Lets be safe and take 10 ms @@ -250,8 +261,7 @@ } // Primary LCD controller Clearscreen - _writeCommand(0x01); // cls, and set cursor to 0 - + _writeCommand(0x01); // cls, and set cursor to 0 wait_ms(10); // The CLS command takes 1.64 ms. // Since we are not using the Busy flag, Lets be safe and take 10 ms @@ -893,17 +903,17 @@ #if (MCP23008==1) // MCP23008 portexpander Init - _write_register(IODIR, 0x00); // All outputs - _write_register(IPOL, 0x00); // No reverse polarity - _write_register(GPINTEN, 0x00); // No interrupt - _write_register(DEFVAL, 0x00); // Default value to compare against for interrupts - _write_register(INTCON, 0x00); // No interrupt on changes - _write_register(IOCON, 0x00); // Interrupt polarity - _write_register(GPPU, 0x00); // No Pullup - _write_register(INTF, 0x00); // - _write_register(INTCAP, 0x00); // - _write_register(GPIO, 0x00); // Output/Input pins - _write_register(OLAT, 0x00); // Output Latch + _write_register(IODIR, 0x00); // All outputs + _write_register(IPOL, 0x00); // No reverse polarity + _write_register(GPINTEN, 0x00); // No interrupt + _write_register(DEFVAL, 0x00); // Default value to compare against for interrupts + _write_register(INTCON, 0x00); // No interrupt on changes + _write_register(IOCON, 0x00); // Interrupt polarity + _write_register(GPPU, 0x00); // No Pullup + _write_register(INTF, 0x00); // + _write_register(INTCAP, 0x00); // + _write_register(GPIO, 0x00); // Output/Input pins + _write_register(OLAT, 0x00); // Output Latch // Init the portexpander bus _lcd_bus = D_LCD_BUS_DEF; @@ -1264,8 +1274,6 @@ _bl = NULL; //Construct dummy pin } - _writeByte( 0x39 ); //FUNCTION SET 8 bit,N=1 2-line display mode,5*7dot IS=1 - wait_us(30); _init(); }