void init_lcd() {
// PMP initialization
PMCON = 0x83bf; // enable PMP with long waits
PMMODE = 0x3ff; // master mode 1
PMAEN = 0x0001; // PMA0 enable
// init timer 1
T1CON = 0x8030; // Fosc/2, 1:256, 16us/tick
lcdWait (2000); // wait for > 30ms
// setup for 8 bit mode
PMADDR = LCDCMD;
PMDATA = 0x1000; // 0x0011000; TODO: warning large integer implicitly truncated to unsigned type
// Wait for > 40us so the LCD can do its thing
TMR1 = 0;
lcdWait (3);
PMDATA = 0b00001100; // ON, cursor off, blink off
lcdWait (3);
PMDATA = 00000001; // clear display
lcdWait (100);
PMDATA = 0b00000110; // increment cursor, no shift
lcdWait(100);
}
void lcdWrite(unsigned char dat,bool cmd,bool tstbusy) //0:cmd 1:not cmd
{
if(tstbusy) lcdWait();
CON_PORT&=~( (1<<RS) | (1<<RW) | (1<<EN) );
DAT_DDR|=0x0f;
DAT_PORT&=~0x0f;
CON_PORT|=(cmd<<RS);
//CON_PORT&=~(1<<RW);
DAT_PORT|=((dat&0xf0) >> 4);
CON_PORT|=(1<<EN);
CON_PORT&=~(1<<EN);
DAT_PORT&=~0x0f;
DAT_PORT|= dat & 0x0f;
CON_PORT|=(1<<EN);
CON_PORT&=~(1<<EN);
DAT_PORT&=~0x0f;
}
