void initLCD(void) {
// PMP initialization
mPMPOpen(PMP_ON | PMP_READ_WRITE_EN | 3,
PMP_DATA_BUS_8 | PMP_MODE_MASTER1 |
PMP_WAIT_BEG_4 | PMP_WAIT_MID_15 |
PMP_WAIT_END_4,
0x0001, // only PMA0 enabled
PMP_INT_OFF); // no interrupts used
// wait for >30ms
delayTimer1(9375);
//initiate the HD44780 display 8-bit init sequence
PMPSetAddress(LCDCMD); // select command register
PMPMasterWrite(0x38); // 8-bit int, 2 lines, 5x7
delayTimer1(15);
PMPMasterWrite(0x0c); // ON, no cursor, no blink
delayTimer1(15);
PMPMasterWrite(0x01); // clear display
delayTimer1(563);
PMPMasterWrite(0x06); // increment cursor, no shift
delayTimer1(563);
}
/*********************************************************************
* Function:
*
* PreCondition:
*
* Input:
*
* Output:
*
* Side Effects:
*
* Overview:
*
* Note:
********************************************************************/
inline void __attribute__((always_inline)) Ex16LCDCmd(BYTE cmd, UINT wait)
{
PMPSetAddress(0x0000);
PMPMasterWrite(cmd);
MSTimerWait(wait);
}
void PMP_Write(CPU_INT16U address, CPU_INT08U data)
{
#ifdef _TARGET_440H
#else
PMPSetAddress(address);
PMPMasterWrite(data);
#endif
}
void vLCDTFTWriteData(UINT16 Data){
mPORTGSetBits(LCD_PIN_RS);
mPORTDClearBits(LCD_PIN_CS);
mPORTDClearBits(LCD_PIN_WR);
PMPMasterWrite(Data);
mPORTDSetBits(LCD_PIN_WR);
mPORTDSetBits(LCD_PIN_CS);
}
// LCD initialization sequence
void initializeLCD(void) {
mPMPOpen(CONTROL, MODE, PORT, INTERRUPT); // Initialize PMP using above settings
// PMCON = 0x83BF; // Enable the PMP, long waits
//PMMODE = 0x3FF; // Master Mode 1
//PMAEN = 0x0001; // PMA0 enabled
OpenTimer1(CONFIG, PERIOD); // Enable Timer 1
Delay_ms(30); // LCD needs 30ms to power on, perform startup functions, etc
PMPSetAddress(CMDREG); // Access the LCD command register
PMPMasterWrite(0x38); // LCD Function Set - 8-bit interface, 2 lines, 5*7 Pixels
Delay_ms(1); // Needs a 40us delay to complete
PMPMasterWrite(0x0C); // Turn on display (with cursor hidden)
Delay_ms(1); // Needs a 40us delay to complete
PMPMasterWrite(0x01); // Clear the display
Delay_ms(2); // Needs a 1.64ms delay to complete
PMPMasterWrite(0x06); // Set text entry mode - auto increment, no shift
Delay_ms(1); // Needs a 40us delay to complete
}
//Writes byte to selected page
void lcdWrite(uint8_t page, uint8_t column)
{
// make sure column and page are within bounds
page %= 9;
column %= 128;
// set column MSB
lcdCommand(0x10 | ((127 - column) >> 4));
// set column LSB
lcdCommand(0x0F & (127 - column));
// set page
lcdCommand(0xB0 |(0x0F & (7-page)));
//Data write
PMPSetAddress(1);
PMPMasterWrite( display[page][column] ); //Reverse Vertical Axis
}
/*********************************************************************
* Function:
*
* PreCondition:
*
* Input:
*
* Output:
*
* Side Effects:
*
* Overview:
*
* Note:
********************************************************************/
inline void __attribute__((always_inline)) Ex16LCDPutChar(BYTE data)
{
PMPSetAddress(0x0001);
PMPMasterWrite(data);
MSTimerWait(2); // wait 1ms
}
static void prvLCDData( char cChar )
{
PMPSetAddress( LCD_DATA_ADDRESS );
PMPMasterWrite( cChar );
vTaskDelay( lcdVERY_SHORT_DELAY );
}
static void prvLCDCommand( char cCommand )
{
PMPSetAddress( LCD_COMMAND_ADDRESS );
PMPMasterWrite( cCommand );
vTaskDelay( lcdSHORT_DELAY );
}
// Write a byte of data to either of the two LCD registers (DATAREG, CMDREG)
void writeToLCD(int reg, char c) {
Delay_ms(1); // 40us needed in between each character write
PMPSetAddress(reg); // Select either 'DATAREG' or 'CMDREG'
PMPMasterWrite(c); // Write the byte to selected register
}
void writeLCD(int addr, char c) {
while (busyLCD()); // wait for LCD ready
PMPSetAddress(addr); // select register
PMPMasterWrite(c); // init write sequence
}