Serin serout problem

[skimask]

about the LCD_RWREG, I stuck my lcd pin to ground, so it should always be write function.

I still get the same problem , The lcdout do not display the inpuT from serin. tHE LCD shows on the second line : 'Waiting...'
It seems to me that the as soon as it sees the serin command it skips all the lcdout afterward, and loops again.

LCD_RWBIT....ok, understood. I'd define it anyways to an unused pin just to keep PBP from thinking otherwise.

Screwed up a bit overall. You can't send words thru a bytewide serial port!

Try this instead:


'TRANSMIT
INCLUDE "modedefs.bas"
DEFINE OSC 20 'use external 20mhz crystal
CMCON = 7 : ANSEL = 0 : ADCON1 = 7
DEFINE LCD_DREG PORTA ' Set LCD Data port
DEFINE LCD_DBIT 0 ' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_RSREG PORTB ' Set LCD Register Select port
DEFINE LCD_RSBIT 1 ' Set LCD Register Select bit
DEFINE LCD_EREG PORTB ' Set LCD Enable port
DEFINE LCD_EBIT 0 ' Set LCD Enable bit
DEFINE LCD_BITS 4 ' Set LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 2 ' Set number of lines on LCD

trisb.2 = 0 : trisb.3 = 1 : dq var portb.4 : temp var word : tempf var word
pause 2500

loop:
lcdout $fe , $c0 , "Getting..."
owout DQ , 1 , [ $cc ] : owout DQ , 0 , [ $44 ] : Pause 500
owout DQ , 1 , [ $cc ] : owout DQ , 0 , [ $be ]
owin DQ , 0 , [ temp.LOWBYTE , temp.HIGHBYTE , skip 6 ]
tempf = temp * 9 : tempf = tempf / 5 : tempf = tempf + 32
lcdout $fe , $c0 , "Displaying"
lcdout $fe , $80 , "Tc=" , DEC temp , "C,Tf=" , DEC tempf , "F.."
lcdout $fe , $c0 , "Sending..."
serout portb.2 , n2400 , [ temp.highbyte , temp.lowbyte ]
serout portb.2 , n2400 , [ tempf.highbyte , tempf.lowbyte ]
lcdout $fe , $c0 , "Data Sent."
goto loop
End


'RECEIVE
INCLUDE "modedefs.bas"
DEFINE OSC 20 'use external 20mhz crystal
CMCON = 7 : ANSEL = 0 : ADCON1 = 7
DEFINE LCD_DREG PORTA ' Set LCD Data port
DEFINE LCD_DBIT 0 ' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_RSREG PORTB ' Set LCD Register Select port
DEFINE LCD_RSBIT 1 ' Set LCD Register Select bit
DEFINE LCD_EREG PORTB ' Set LCD Enable port
DEFINE LCD_EBIT 0 ' Set LCD Enable bit
DEFINE LCD_BITS 4 ' Set LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 2 ' Set number of lines on LCD

temp var word : tempf var word : pause 2500
loop:
lcdout $fe , $c0 , "Waiting..."
serin portB.3 , n2400 , 1000 , loop , [ temp.highbyte , temp.lowbyte , tempf.highbyte , tempf.lowbyte ]
lcdout $fe , $c0 , "Received.." : lcdout $fe , $c0 , "Displaying"
lcdout $fe , $80 , "Tc=" , DEC temp , "C,Tf=" , DEC tempf , ".."
lcdout $fe , $c0 , "Displayed."
goto loop
End

[lerameur]

The same thing is happeneing as before,
the LCD is just showing 'Waiting ... ' on the receiving unit
And I can see on the scope a signal coming in on portB3

ken

[skimask]

The same thing is happeneing as before,
the LCD is just showing 'Waiting ... ' on the receiving unit

ken

Anything showing up on the first line? Something like:
Tc=100C,Tf=212 or anything similar?

[lerameur]

the first line of the receiving unit is blank
the second: waiting ....

k

[skimask]

the first line of the receiving unit is blank
the second: waiting ....

k

What does the transmitter lcd display?

[lerameur]

TC=46c, Tf=114f
getting...

[skimask]

TC=46c, Tf=114f
getting...

Ok, obviously the temp sensor code is working fine, and the receiver code is 'working'.

Check your wiring again. This should be working just fine. I just built up the same thing (during the last 10 minutes), 2 PIC16F628A's, exact code, simulated the one-wire temp sensor in the transmit section with some dummy values, added a button to change the number when pressed.
Both transmit and receive sections worked fine.
Are both sections on the same power and ground lines?

Use this code. Again, make the LCD work for you....

'TRANSMIT
INCLUDE "modedefs.bas"
DEFINE OSC 20 'use external 20mhz crystal
CMCON = 7 : ANSEL = 0 : ADCON1 = 7
DEFINE LCD_DREG PORTA ' Set LCD Data port
DEFINE LCD_DBIT 0 ' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_RSREG PORTB ' Set LCD Register Select port
DEFINE LCD_RSBIT 1 ' Set LCD Register Select bit
DEFINE LCD_EREG PORTB ' Set LCD Enable port
DEFINE LCD_EBIT 0 ' Set LCD Enable bit
DEFINE LCD_BITS 4 ' Set LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 2 ' Set number of lines on LCD
try1 var byte : output portb.2 : input portb.3 : dq var portb.4 : temp var word : tempf var word
pause 2500

loop:
try1 = try1 + 1
lcdout $fe , $c0 , "Getting..." , DEC3 try1 , "," , DEC3 try2
owout DQ , 1 , [ $cc ] : owout DQ , 0 , [ $44 ] : Pause 500
owout DQ , 1 , [ $cc ] : owout DQ , 0 , [ $be ]
owin DQ , 0 , [ temp.LOWBYTE , temp.HIGHBYTE , skip 6 ]
tempf = temp * 9 : tempf = tempf / 5 : tempf = tempf + 32
lcdout $fe , $c0 , "Displaying" , DEC3 try1 , "," , DEC3 try2
lcdout $fe , $80 , "Tc=" , DEC temp , "C,Tf=" , DEC tempf , "F.."
lcdout $fe , $c0 , "Sending..." , DEC3 try1 , "," , DEC3 try2
serout portb.2 , n2400 , [ temp.highbyte , temp.lowbyte ]
serout portb.2 , n2400 , [ tempf.highbyte , tempf.lowbyte ]
lcdout $fe , $c0 , "Data Sent." , DEC3 try1 , "," , DEC3 try2
goto loop
End




'RECEIVE
INCLUDE "modedefs.bas"
DEFINE OSC 20 'use external 20mhz crystal
CMCON = 7 : ANSEL = 0 : ADCON1 = 7
DEFINE LCD_DREG PORTA ' Set LCD Data port
DEFINE LCD_DBIT 0 ' Set starting Data bit (0 or 4) if 4-bit bus
DEFINE LCD_RSREG PORTB ' Set LCD Register Select port
DEFINE LCD_RSBIT 1 ' Set LCD Register Select bit
DEFINE LCD_EREG PORTB ' Set LCD Enable port
DEFINE LCD_EBIT 0 ' Set LCD Enable bit
DEFINE LCD_BITS 4 ' Set LCD bus size (4 or 8 bits)
DEFINE LCD_LINES 2 ' Set number of lines on LCD

'try1 = count of times waiting for bytes, try2 = count of bytes received
try1 var byte : try2 var byte : temp var word : tempf var word : input portb.3 : pause 2500

loop:
lcdout $fe , $c0 , "Waiting..." , DEC3 try1 , "," , DEC3 try2
try1 = try1 + 1
serin portB.3 , n2400 , 1000 , loop , [ temp.highbyte , temp.lowbyte , tempf.highbyte , tempf.lowbyte ]
try2 = try2 + 2
lcdout $fe , $c0 , "Received.." , DEC3 try1 , "," , DEC3 try2
lcdout $fe , $c0 , "Displaying" , DEC3 try1 , "," , DEC3 try2
lcdout $fe , $80 , "Tc=" , DEC temp , "C,Tf=" , DEC tempf , ".."
lcdout $fe , $c0 , "Displayed." , DEC3 try1 , "," , DEC3 try2
goto loop
End