void spyglassLcdInit(void)
{
// LCD function set
spyglassLcdWrite(0,LCD_FUNCTION_DEFAULT);
// clear LCD
spyglassLcdWrite(0,1<<LCD_CLR);
delay(60000); // wait 60ms
// set entry mode
spyglassLcdWrite(0,1<<LCD_ENTRY_MODE | 1<<LCD_ENTRY_INC);
// set display to on
spyglassLcdWrite(0,1<<LCD_ON_CTRL | 1<<LCD_ON_DISPLAY );
// move cursor to home
spyglassLcdWrite(0,1<<LCD_HOME);
// set data address to 0
spyglassLcdWrite(0,1<<LCD_DDRAM | 0x00);
// set contrast
spyglassSetLcdContrast(20);
}
void systickHandler(void)
{
uint16_t tms;
uint8_t ts,tm,th;
uint8_t pb;
// set timer for 10ms interval
TCNT2 = (unsigned char)-TIMER_INTERVAL;
// count up on uptime
UptimeMs += 10;
// if we at a 100ths millisecond interval, update the display
if(!(UptimeMs % 100))
{
// redirect rprintf() output to spyglass LCD
rprintfInit(spyglassLcdWriteChar);
// print banner message
spyglassLcdGotoXY(0,0);
rprintfProgStrM("**** SpyglassUI ****");
// read pushbuttons and take appropriate action
pb = spyglassGetPushbuttons();
spyglassLcdGotoXY(0,1);
rprintf("Buttons: ");
rprintfNum(2,8,FALSE,'0',pb);
if((pb & 0x01) && (Contrast < 255))
Contrast++;
if((pb & 0x02) && (Contrast > 0))
Contrast--;
if(pb & 0x08)
spyglassSetLeds(0x01);
if(pb & 0x10)
spyglassSetLeds(0x02);
// show display contrast
spyglassLcdGotoXY(0,2);
rprintf("LCD Contrast: ");
rprintfNum(10,3,FALSE,' ',Contrast);
spyglassSetLcdContrast(Contrast);
// show time
tms = (UptimeMs)%1000;
ts = (UptimeMs/1000)%60;
tm = (UptimeMs/60000l)%60;
th = (UptimeMs/3600000l);
spyglassLcdGotoXY(0,3);
rprintf("Time:");
rprintfNum(10,3,FALSE,' ',th);
rprintfChar(':');
rprintfNum(10,2,FALSE,'0',tm);
rprintfChar(':');
rprintfNum(10,2,FALSE,'0',ts);
rprintfChar('.');
rprintfNum(10,3,FALSE,'0',tms);
rprintf("ms");
// return rprintf() output to serial port
rprintfInit(uartSendByte);
}
}
void serviceLocal(void)
{
int c;
// a little command-prompt utility to play with the spyglass UI
// all commands are single characters
if( (c = uartGetByte()) != -1)
{
// echo command to terminal
uartSendByte(c);
// process command
switch(c)
{
case 'i': spyglassLcdInit(); break;
case 'h':
rprintfInit(spyglassLcdWriteChar);
spyglassLcdGotoXY(0,0);
rprintf("*** HELLO WORLD ***");
rprintfInit(uartSendByte);
break;
case 'p':
rprintf("Pushbutton State: 0x%x\r\n", spyglassGetPushbuttons());
break;
case '+': if(Contrast<255) Contrast++; rprintf("\r\nLCD Contrast: %d\r\n", Contrast); spyglassSetLcdContrast(Contrast); break;
case '-': if(Contrast>0) Contrast--; rprintf("\r\nLCD Contrast: %d\r\n", Contrast); spyglassSetLcdContrast(Contrast); break;
case 'l': spyglassSetLeds(0x00); break;
case 'L': spyglassSetLeds(0xFF); break;
case 'b': spyglassSetBeeper(0); break;
case 'B': spyglassSetBeeper(1); break;
case 'x':
i2cDeviceSearch();
break;
case '?':
rprintfProgStrM("\r\n");
rprintfProgStrM("--- Spyglass Commands: ---\r\n");
rprintfProgStrM("(i) Initialize Spyglass LCD\r\n");
rprintfProgStrM("(h) Print 'Hello World' message to Spyglass LCD\r\n");
rprintfProgStrM("(p) Get Spyglass pushbutton state\r\n");
rprintfProgStrM("(+) Increase contrast number (lightens contrast)\r\n");
rprintfProgStrM("(-) Decrease contrast number (darkens contrast)\r\n");
rprintfProgStrM("(l) Set Spyglass User LEDs to OFF\r\n");
rprintfProgStrM("(L) Set Spyglass User LEDs to ON\r\n");
rprintfProgStrM("(b) Set Spyglass beeper to OFF\r\n");
rprintfProgStrM("(B) Set Spyglass beeper to ON\r\n");
rprintfProgStrM("--- General Commands: ---\r\n");
rprintfProgStrM("(x) Search for I2C devices on the bus\r\n");
rprintfProgStrM("(?) Help\r\n");
break;
case '\r':
default:
break;
}
// print new prompt
rprintfProgStrM("\r\ncmd>");
}
}