LCDOUT and the second line...

My books haven't arrived yet so I'm trudging on "Learn by example" style, so nudges will suffice.

What I'm thinking: I'd like my circuit to LCDOUT on line 1 (message on steady) and maybe have the 2nd line flash the "CHECK AUTO MODE" indicating a problem with "Auto" mode. Is there a way to clear the second line of the display only so I can pause/clear/resend to flash the message to the second line until the program jumps out of the current condition?


Mess2: LCDOUT $fe, 1, "AUTO MODE" : RETURN 'Auto mode ok

Mess3: LCDOUT $fe, 1, "MANUAL MODE" 'Atuo mode messed up
LCDOUT $c0 , "CHECK AUTO MODE" 'Flash this part of the message
Gosub Beep1 : RETURN


Even a step further and have it beep 3 times. Will the REPEAT command serve me here?


Beep1: Sound PORTC.2 [100,30] 'beep 3 times and quit and maybe wait 10 minutes and beep 3 times, etc...
S = 0
Repeat Beep1 = 0
S = S + 1
Until S > 4 : RETURN


I am looking at the output of Optos to let me know what's available

Used to write Basic when a kid, not sure what I can get away with in PicBasic pro, e.g. Nested loops and what not. Need my books....




Pic16F870 pinout
_._
RB7 - MPB (Sw1) Menu?
RB6 - SPDT (Sw2)
RB5 - LCD En
RB4 - LCD Rs
RB3 - LCD DB7
RB2 - LCD DB6
RB1 - LCD DB5
RB0 - LCD DB4
Vdd
Vss
RC7 -
RC6 - Piezo Spkr
RC5 - 1/4 Opto in
RC4 - 1/4 Opto in
RC3 - 1/4 Opto in

there's probably 2 304 681 673 264 954 different way to do the same thing

WHILE/WEND

Code:

---

' Let's flash error message 3 times method 1
' ------------------------------------------
'
loop = 2
While Loop
      lcdout $fe,$c0,"Error !"
      pause 500
      LCDOUT $fe,$c0,"      "
      pause 500
      loop = loop - 1
wend

---

FOR TO NEXT

Code:

---

' Let's flash error message 3 times method 2
' ------------------------------------------
'
for Loop=1 to 3
      lcdout $fe,$c0,"Error !"
      pause 500
      LCDOUT $fe,$c0,"      "
      pause 500
next

---

REPEAT/UNTIL

Code:

---

' Let's flash error message 3 times method 3
' ------------------------------------------
'
LOOP=0
REPEAT
      lcdout $fe,$c0,"Error !"
      pause 500
      LCDOUT $fe,$c0,"      "
      pause 500
      LOOP=LOOP+1
UNTIL LOOP=3

---

IF THEN ELSE

Code:

---

' Let's flash error message 3 times method 4
' ------------------------------------------
'
LOOP=0
RedoLoop:
      lcdout $fe,$c0,"Error !"
      pause 500
      LCDOUT $fe,$c0,"      "
      pause 500
      LOOP=LOOP+1
      if loop !=3 then redoloop

---

Something to work with.. didn't test it.. should work

Code:

---

    ' I/O definition
    ' --------------
    '
    TRISB = %11000000
    TRISC = %10111111 
    OPTION_REG.7 = 0 'enable pull-up resistor on PORTB
   
    'Alias to I/O definition
    '-----------------------
    '
    SW1      VAR PORTB.7
    SW2      var PORTB.6
    PiezoSPK var PORTC.6
    Opto1    var PORTC.5
    Opto2    var PORTC.4
    Opto3    var PORTC.3

    ' LCD define
    ' ----------
    '   
    define LCD_DREG PORTB    ' Set data pin of LCD to
    define LCD_DBIT 0        ' PORTB.0-PORTB.3
   
    define LCD_RSREG PORTB    ' Set RS bit of LCD to
    define LCD_RSBIT 4        ' PORTB.4
   
    define LCD_EREG PORTB    ' Set E bit of LCD to
    define LCD_EBIT 5        ' PORTB.5
   
    ' Variable definition
    ' -------------------
    '
    ActiveSwitch var byte
    DelayVar    var WORD

    ' Main Program
    ' ============
    '
Start:
    lcdout $fe,1, "Line1"
    DELAYVAR=0
    ReadSomething:
        activeswitch=(PORTB & %11000000) | (PORTC & %00111000)
        Select case activeswitch
              case %01111000
                    Goto SW1Sub
              case %10111000
                    GOto SW2Sub
              case %11011000
                    goto Opto1Sub
              case %11101000
                    goto Opto2Sub
              case %11110000
                    goto Opto3Sub
        end select
        IF DELAYVAR<500 THEN
          LCDOUT $FE,$C0,"Waiting !"
          PAUSE 1
          DELAYVAR=DELAYVAR + 1
        ELSE
          LCDOUT $FE,$C0,"        "
          pause 1
          delayvar=delayvar + 1
          if delayvar = 1000 then delayvar = 0
        endif
        goto readsomething
       
SW1Sub:
    lcdout $fe,1,"sw1"
    pause 1000
    goto start

SW2Sub:
    lcdout $fe,1,"sw2"
    pause 1000
    goto start

Opto1Sub:
    lcdout $fe,1,"Opto1"
    pause 1000
    goto start

Opto2Sub:
    lcdout $fe,1,"Opto2"
    pause 1000
    goto start

Opto3Sub:
    lcdout $fe,1,"Opto3"
    pause 1000
    goto start

---