Code Issue - select case or 'if' issue - not sure why
Hi all,
Im messing around with some code off a project below:
The problem im having is either in this code (just below all the rpm calcs):
Code:
if rpm > 6600 then 'exceeding redline > light on
let alert = 1:portc.3 = 1
else
portc.3 = 0:let alert = 0
endif
or in the select case code, basically it is not selecting case 1 (alert = 1) and updating the last line of the lcd correctly.
All other 'select case's seem to be working?
Anyone have any clues?
Just a few notes - the code is over 2k compiled, thererfore im getting crossing page boundary warnings but that shouldnt be the problem?
Also i've tried moving a few things around in the code with no luck....
Code:
' |1 - mclr b7 - 28| lcd
'temp in|2 - ra0/an0 b6 - 27| lcd
'volt in|3 - ra1/an1 b5 - 26| lcd
' |4 - ra2/an2 b4 - 25| lcd
' |5 - ra3/an3 b3 - 24| lcd
' |6 - ra4/tocki b2 - 23| lcd
'fuel |7 - an4 b1 - 22|
' |8 - gnd b0 - 21|
' |9 - xtal + - 20|
' |10 - xtal gnd - 19|
'fan sen|11 - c0 c7/rx-18| serial rx
'wp sen |12 - c1 c6/tx-17| serial tx
'tach |13 - ccp1 /c2 c5 - 16| out 3 - fan relay
'outLITE|14 - c3 c4 - 15| out 2
DEFINE LCD4X20 1
INCLUDE "LCDbar_INC.bas" ' Include the BARgraph routines
INCLUDE "DT_INTS-14.bas" ' Base Interrupt System
INCLUDE "ReEnterPBP.bas" ' Include if using PBP interrupts
DEFINE LCD_DREG PORTB ' Set LCD Data port
DEFINE LCD_DBIT 4 ' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_RSREG PORTB ' Set LCD Register Select port
DEFINE LCD_RSBIT 2 ' Set LCD Register Select bit
DEFINE LCD_EREG PORTB ' Set LCD Enable port
DEFINE LCD_EBIT 3 ' Set LCD Enable bit
DEFINE LCD_BITS 4 ' Set LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 4 ' Set number of lines on LCD
TRISA = %00101111 ' Port A all defines
TRISB = %00000000 ' Port B all defines
TRISC = %00000111
CMCON = 7 ' Comparators Off
ADCON0 = %11000001
ADCON1 = %10000010
CCP1CON = %00000110 ' Capture mode, capture on 4th rising
T1CON = %00100001 ' Set Timer 1, On and 1/4 prescale (overflow every 260ms)
DEFINE ADC_BITS 10 ' Number of bits in ADCIN results
DEFINE ADC_SAMPLEUS 50
Temperature VAR WORD Bank0 ' Must be a WORD even though AD is 8bit
Fuel VAR Word Bank0 ' Must be a WORD even though AD is 8bit
Fan VAR Bit Bank0
WP VAR Bit Bank0
Overflow VAR PIR1.0 ' Timer1 overflow flag
inRPM VAR WORD Bank0 ' Word variable that stores the value
RPM var word Bank0
maxrpm var word Bank0
maxrpmreset var word Bank0
alert var byte Bank0
'==========================================================================================================
ASM
INT_LIST macro ; IntSource, Label, Type, ResetFlag?
INT_Handler CCP1_INT, _gotrpmpulse, PBP, yes
endm
INT_CREATE ; Creates the interrupt processor
INT_ENABLE CCP1_INT ; enable CCP port change interrupt
ENDASM
'==========================================================================================================
LCDOUT $FE, 1 ' Clear Screen
Pause 2000 ' lcd settle time
LCDOUT $FE, 2, " Digital Panel" ' intro screen
LCDOUT $FE, $D4, "2007" ' intro screen
Pause 3000
LCDOUT $FE, 1 ' Clear Screen
inrpm = 2
maxrpmreset = 1600
alert = 0
portc.3 = 1 ' shift light on test
pause 600 ' pause 0.5 sec
portc.3 = 0
Loop1:
ADCIN 0, Temperature
Temperature = 889 - Temperature ' invert it
Temperature = Temperature * 10
Temperature = Temperature / 66 ' divider
ADCIN 4, Fuel
fuel = fuel / 7
fuel = fuel - 2
fan = portc.0
wp = portc.1
RPM = 10000
RPM = RPM * 1500
RPM = DIV32 inrpm
RPM = RPM / 100
RPM = RPM * 100
if rpm > 6600 then 'exceeding redline > light on
let alert = 1:portc.3 = 1
else
portc.3 = 0:let alert = 0
endif
LCDOUT $FE,1,"Temp:",DEC Temperature," Fuel:",DEC Fuel," L "
If fan = 0 and wp = 0 then
LCDOUT $FE,$C0,"Fans:OFF W/Pump:OFF":alert = 2
endif
If fan = 1 and wp = 0 then
LCDOUT $FE,$C0,"Fans:ON W/Pump:OFF":alert = 3
endif
If fan = 0 and wp = 1 then
LCDOUT $FE,$C0,"Fans:OFF W/Pump:ON":alert = 0
endif
If fan = 1 and wp = 1 then
LCDOUT $FE,$C0,"Fans:ON W/Pump:ON":alert = 0
endif
LCDOUT $FE,$94,"Rpm: ",DEC rpm, " Max:", DEC maxrpm
select case alert
case 0
; syntax- BARgraph Value, Row, Col, Width, Range, Style
@ BARgraph _RPM, 4, 0, 19, 7500, lines
case 1
LCDOUT $FE,$D4,"ALERT: !!! RPM !!!! "
case 2
pulsout portc.3, 700:LCDOUT $FE,$D4,"ALERT:FAN + W/P FAIL"
case 3
pulsout portc.3, 700:LCDOUT $FE,$D4,"ALERT: W / PUMP FAIL"
case else
end select
if rpm > maxrpm then ' check max rpm and update if needed
maxrpm = rpm
endif
if maxrpmreset < 100 then ' reset max rpm
maxrpm=0
maxrpmreset = 1600
endif
maxrpmreset = maxrpmreset -1
pause 80
GOTO Loop1
'=======================================================================================
'---[CCP1 - interrupt handler - We got an input Pulse] ---------------------------------
gotrpmpulse:
if overflow = 0 then
inRPM.highbyte = CCPR1H ' Store the time to do 4 revs value in
inRPM.lowbyte = CCPR1L ' inRPM variable
TMR1H = 0 ' Clear Timer1 high register
TMR1L = 0 ' Clear Timer1 low register
endif
if overflow = 1 then
TMR1H = 0 ' Clear Timer1 high register
TMR1L = 0 ' Clear Timer1 low register
overflow = 0
inrpm = 2
endif
@ INT_RETURN
'==============================================================================================
