Basic library for SHARP LCD LS027B4DH01/LS027B7DH01
Dependents: AkiSpiLcd_demo AkiSpiLcd_demo2 LCDRAM AkiSpiLcd_example
AkiSpiLcd.cpp
- Committer:
- k4zuki
- Date:
- 2014-08-28
- Revision:
- 5:7061ce47a359
- Parent:
- 4:844693a617dc
- Child:
- 7:0c85f23a6568
File content as of revision 5:7061ce47a359:
/** this is for SHARP LCD LS027B4DH01 * by Kazuki Yamamoto, or _K4ZUKI_ */ #include "mbed.h" #include "AkiSpiLcd.h" AkiSpiLcd::AkiSpiLcd(PinName mosi, PinName miso, PinName sck, PinName csl, PinName csr) :_spi(mosi, miso, sck), _csl(csl), _csr(csr) { _ram= new Ser23K256::Ser23K256(_spi,csr); _csl=0; _csr=1; _spi.format(8,0); _spi.frequency(2000000); comflag = modeflag = clearflag = 0; int data=0; for(int i=0;i<240;i++){ data=( ( i & 0x01 ) << 7 )| ( ( i & 0x02 ) << 5 )| ( ( i & 0x04 ) << 3 )| ( ( i & 0x08 ) << 1 )| ( ( i & 0x10 ) >> 1 )| ( ( i & 0x20 ) >> 3 )| ( ( i & 0x40 ) >> 5 )| ( ( i & 0x80 ) >> 7 ); _ram->write(RAMLINE_BASE+i,(uint8_t)data); } _ram->write(RAMMODE_BASE,0x00000000); } void AkiSpiLcd::cls() { modeflag=0; clearflag=1; _csl=1; wait_us(5); _spi.write( (modeflag << 7) | (comflag << 6) | (clearflag << 5) ); _spi.write(0x00); wait_us(5); _csl=0; if(comflag == 0) { comflag = 1; } else { comflag = 0; } } void AkiSpiLcd::directUpdateSingle(int line, uint8_t* data) { modeflag=1; clearflag=0; _csl=1; wait_us(5); _spi.write( (modeflag << 7) | (comflag << 6) | (clearflag << 5) ); _spi.write( ( ( (line+1) & 0x01 ) << 7 )| ( ( (line+1) & 0x02 ) << 5 )| ( ( (line+1) & 0x04 ) << 3 )| ( ( (line+1) & 0x08 ) << 1 )| ( ( (line+1) & 0x10 ) >> 1 )| ( ( (line+1) & 0x20 ) >> 3 )| ( ( (line+1) & 0x40 ) >> 5 )| ( ( (line+1) & 0x80 ) >> 7 ) ); for(int i=0; i<50; i++) { _spi.write( *(data+i) ); } _spi.write(0x00); _spi.write(0x00); wait_us(5); _csl=0; if(comflag == 0) { comflag = 1; } else { comflag = 0; } } void AkiSpiLcd::directUpdateMulti(int line, int length, uint8_t* data) { modeflag=1; clearflag=0; if(length>0) { _csl=1; wait_us(5); for (int j=0; j<length; j++) { _spi.write( (modeflag << 7) | (comflag << 6) | (clearflag << 5) ); _spi.write( ( ( (line) & 0x01 ) << 7 )| ( ( (line) & 0x02 ) << 5 )| ( ( (line) & 0x04 ) << 3 )| ( ( (line) & 0x08 ) << 1 )| ( ( (line) & 0x10 ) >> 1 )| ( ( (line) & 0x20 ) >> 3 )| ( ( (line) & 0x40 ) >> 5 )| ( ( (line) & 0x80 ) >> 7 ) ); for(int i=0; i<50; i++) { _spi.write( *(data+(50*j+i)) );//hogepic[50*j+i] } line+=1; } _spi.write(0x00); _spi.write(0x00); wait_us(5); _csl=0; } if(comflag == 0) { comflag = 1; } else { comflag = 0; } } void AkiSpiLcd::cominvert() { modeflag=0; clearflag=0; _csl=1; _spi.write( (modeflag << 7) | (comflag << 6) | (clearflag << 5) ); _spi.write(0x00); wait_us(5); _csl=0; if(comflag == 0) { comflag = 1; } else { comflag = 0; } } /* void AkiSpiLcd::dispOn(bool disp) { if(disp) { _csr=1; } else { _csr=0; } } */ /** Reads single line (400 bits = 50 bytes) from a screen */ void AkiSpiLcd::ramReadSingle(int line, uint8_t* buffer, int screen){ screen &=1; screen<<=7; // uint8_t buffer[50]; line*=50; int address=screen+line; _ram->read(address,buffer,50); /* _csr=0; //select VRAM _spi.write(0x03); _spi.write(address>>8); _spi.write(address&0xff); for(int i=0;i<50;i++){ *(buffer+i)=_spi.write(0xaa); } _csr=1; */ // return buffer; } /** Reads multi lines(400 x N bits = 50 x N bytes) from a screen */ void AkiSpiLcd::ramReadMulti(int line, int length, uint8_t* buffer, int screen){ screen &=1; screen<<=7; line*=50; int address=screen+line; // for(int j=0;j<length;j++){ _ram->read(address,buffer,50*length); // } /* _csr=0; //select VRAM _spi.write(0x03); _spi.write(address>>8); _spi.write(address&0xff); for(int j=0;j<length;j++){ for(int i=0;i<50;i++){ *(buffer+i)=_spi.write(0xaa); } } _csr=1; */ // return buffer; } /** Writes single line (400 bits = 50 bytes) into a screen */ void AkiSpiLcd::ramWriteSingle(int line, uint8_t* data, int screen){ screen &=1; screen<<=7; line*=50; int address=screen+line; _ram->write(address,data,50); _csr=0; //select VRAM _spi.write(0x02); _spi.write(address>>8); _spi.write(address&0xff); for(int i=0;i<50;i++){ _spi.write(*(data+i)); } _csr=1; } /** Writes multi lines(400 x N bits = 50 x N bytes) into a screen */ void AkiSpiLcd::ramWriteMulti(int line, int length, uint8_t* data, int screen){ screen &=1; screen<<=7; line*=50; int address=screen+line; _ram->write(address,data,50*length); /* _csr=0; //select VRAM _spi.write(0x02); _spi.write(address>>8); _spi.write(address&0xff); for(int j=0;j<length;j++){ for(int i=0;i<50;i++){ _spi.write(*(data+j*50+i)); } } _csr=1; */ } /** copies whole data in screen into LCD */ void AkiSpiLcd::ram2lcd(int screen){ screen &=1; screen<<=7; int address=screen; uint8_t* dummy; /* _csr=0; //select VRAM _spi.write(0x03); _spi.write(address>>8); _spi.write(address&0xff); */ for(int j=0;j<240;j++){ _ram->write(RAMMODE_BASE,(modeflag << 7) | (comflag << 6) | (clearflag << 5)); _csl=1; _ram->read(RAMMODE_BASE,dummy,2); for(int i=0;i<50;i++){ _ram->read(address,dummy,50); } _ram->read(RAMMODE_BASE+2,dummy,2); wait_us(5); _csl=0; if(comflag == 0) { comflag = 1; } else { comflag = 0; } } _csl=0; }