Fork of Freetronics_16x2_LCD class for HD4478 based LCDs with Cyrillic symbols like WH1602 etc. Use puts() for latin and cyrillic texts, symbols. ( ° included)
Fork of Freetronics_16x2_LCD by
freetronicsLCDShieldRus.cpp
- Committer:
- margadon
- Date:
- 2014-11-27
- Revision:
- 7:08abb319acab
- Parent:
- 6:9ef0091c2a4f
File content as of revision 7:08abb319acab:
#include "mbed.h" #include "freetronicsLCDShieldRus.h" #define PULSE_E wait(0.000001f); \ _e = 0; \ wait(0.000001f); \ _e = 1; freetronicsLCDShieldRus::freetronicsLCDShieldRus (PinName rs, PinName e, PinName d0, PinName d1, PinName d2, PinName d3, PinName bl, PinName a0) : _rs(rs), _e(e), _d(d0, d1, d2, d3), _bl(bl), _a0(a0) { // Class constructor // Init the display, wait 15ms to insure the power is up _e = true; _rs = false; wait(0.015f); for (int i = 0; i < 3; i++) { writeByte(0x3); wait(0.00164f); // this command takes 1.64ms, so wait for it } writeByte(0x2); // 4-bit mode writeCommand(0x28); // Function set 001 BW N F - - writeCommand(0x0C); // Display on/off controll 0000 1 D C B (D(isplay) On/Off C(ursor) On/Off B(link) On/Off writeCommand(0x6); // Cursor Direction and Display Shift : 0000 01 CD S (CD 0-left, 1-right S(hift) 0-no, 1-yes cls(); // Set the PWM period to 20ms _bl.period_ms(1); _bl.write(0.0); } void freetronicsLCDShieldRus::setCursorPosition (int line, int col) { // Set the new cursorposition writeCommand(0x80 + (line * 0x40) + col); } void freetronicsLCDShieldRus::setBackLight (bool blStatus) { // Switch the backlight on (true) or off (false) _bl = (blStatus) ? 1.0 : 0.0; } void freetronicsLCDShieldRus::setBackLight (float blIntensity) { // Switch the backlight on (true) or off (false) _bl = blIntensity; } void freetronicsLCDShieldRus::setCursor (bool cStatus, bool blink) { int tmp = 0; if (blink) tmp = 0x01; if (cStatus) tmp |= 0x02; writeCommand(0x0C + tmp); } void freetronicsLCDShieldRus::shift(bool direction) { if(direction == LEFT) shiftLeft(); else shiftRight(); } void freetronicsLCDShieldRus::shiftLeft(void) { writeCommand(0x18 + 0x04); } void freetronicsLCDShieldRus::shiftRight(void) { writeCommand(0x18); } void freetronicsLCDShieldRus::cls(void) { // Clear the display and place the cursor at 0, 0 writeCommand(0x01); wait(0.00164f); } void freetronicsLCDShieldRus::home(void) { // Undo shift operations and place cursor at 0,0 writeCommand(0x02); wait(0.00164f); } void freetronicsLCDShieldRus::writeCGRAM (char address, const char *ptr, char nbytes) { // Write the address only once, it is autoincremented writeCommand(0x40 | address); // Write the data for(int i = 0; i < nbytes; i++) { writeData(*ptr++); } } // Low level output functions void freetronicsLCDShieldRus::writeByte (int byte) { // Split the byte in high and low nibble, write high nibble first _d = byte >> 4; PULSE_E; _d = byte >> 0; PULSE_E; // Most instructions take 40us wait(0.000040f); } void freetronicsLCDShieldRus::writeData (int data) { _rs = true; writeByte(data); } void freetronicsLCDShieldRus::writeCommand (int command) { _rs = false; writeByte(command); } unsigned char ROM1602Cyr_table[]= { 0x41,0xa0,0x42,0xa1,0xe0,0x45,0xa3,0xa4, 0xa5,0xa6,0x4b,0xa7,0x4d,0x48,0x4f,0xa8, 0x50,0x43,0x54,0xa9,0xaa,0x58,0xe1,0xab, 0xac,0xe2,0xad,0xae,0x62,0xaf,0xb0,0xb1, 0x61,0xb2,0xb3,0xb4,0xe3,0x65,0xb6,0xb7, 0xb8,0xb9,0xba,0xbb,0xbc,0xbd,0x6f,0xbe, 0x70,0x63,0xbf,0x79,0xe4,0x78,0xe5,0xc0, 0xc1,0xe6,0xc2,0xc3,0xc4,0xc5,0xc6,0xc7, }; int freetronicsLCDShieldRus::puts(const char *str){ int shift=0; int outchar=0; bool grad_sign = false; while( *str ) { if (*str>0x80){ // UTF-8 handler; if (*str==0xd0)shift=0x90; if (*str==0xd1)shift=0x50; if (*str==0xc2)grad_sign = true; else grad_sign = false; *str++; outchar=ROM1602Cyr_table[*str-shift]; if (*str==0x91&shift==0x50)outchar=0xb5; //ё if (*str==0x81&shift==0x90)outchar=0xa2; //Ё if (*str==0xb0&grad_sign==true)outchar=0xef; //° Alt+0176 putc(outchar); //putc(0xef); *str++; } else putc( *str++ ); } } // <instanceName>.writeCGRAM (0x00, &CGRAM_DATA[0], 8); float freetronicsLCDShieldRus::readButton(void) { return(_a0.read()); } // Virtual functions for stream int freetronicsLCDShieldRus::_putc(int value) { writeData(value); return value; } int freetronicsLCDShieldRus::_getc() { return -1; }