Serin serout problem

[skimask]

On the receiver side, first line; empty, second line: 'Waiting... 000,000'

It's not incrementing at all on the receiving side? Try1 should be going up about once a second.


Add:
DEFINE CHAR_PACING 16667

to the transmit program's defines at the beginning. Maybe the receiver is missing characters 'cause they're coming too fast with the software based serin command. If that fixes it, it'll probably work with a value much less than 16667, but it's a start.

[lerameur]

NO incrementation on the receiver. The same with all zeros all the time
what about using the serin2 command ??

with the new define, I can see glitches of 'Sending...' on the second line of the sending side. But most often it is on like before, 'Getting...'

[skimask]

NO incrementation on the receiver. The same with all zeros all the time
what about using the serin2 command ??

with the new define, I can see glitches of 'Sending...' on the second line of the sending side. But most often it is on like before, 'Getting...'

Transmit side - sounds like it's doing like it should.

Receive side - try this one:

'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 data, try2 = count of bytes received
try1 var byte : try2 var byte : temp var word : tempf var word : input portb.2 : pause 2500
try1 = 0 : try2 = 0

loop:
lcdout $fe , $c0 , "Waiting.." , DEC3 try1 , "," , DEC3 try2
try1 = try1 + 1 : temp = 0 : tempf = 0
serin portB.2 , n2400 , [ temp.highbyte , temp.lowbyte , tempf.highbyte , tempf.lowbyte ]
if temp + tempf > 0 then try2 = try2 + 1 'if temp+tempf are not 0 then data received
lcdout $fe , $c0 , "Received." , DEC3 try1 , "," , DEC3 try2 : pause 100
lcdout $fe , $c0 , "Display.." , DEC3 try1 , "," , DEC3 try2 : pause 100
lcdout $fe , $80 , "Tc=" , DEC3 temp , "C,Tf=" , DEC3 tempf , ".." : pause 100
lcdout $fe , $c0 , "Shown...." , DEC3 try1 , "," , DEC3 try2 : pause 100
goto loop
End

[lerameur]

absolutely no changes

[skimask]

absolutely no changes

On the receiver side...
Change the word 'Waiting..' to
'Wait 4 it'
and see what happens

[lerameur]

O my I changed to this
serin portB.2 , t2400 , [ temp.highbyte , temp.lowbyte , tempf.highbyte , tempf.lowbyte ]

now the temp is showing up on first line, BUT is it showing zeros,
incrementation on try, try2 fixed at 0

check the web page also, for output on lcd

also:
On the receiver side...
Change the word 'Waiting..' to
'Wait 4 it'
and see what happens ----------- Only the display changed

[skimask]

O my I changed to this
serin portB.2 , t2400 , [ temp.highbyte , temp.lowbyte , tempf.highbyte , tempf.lowbyte ]

now the temp is showing up on first line, BUT is it showing zeros,
incrementation on try, try2 fixed at 0

check the web page also, for output on lcd

also:
On the receiver side...
Change the word 'Waiting..' to
'Wait 4 it'
and see what happens ----------- Only the display changed

receiver side change - That's what I was wondering. I had a case a couple days ago where I thought it was programming, but the PGD wire had come loose from my board, so it wasn't actually programming, even though it didn't report any errors (and I had my verify turned off!).

Changing to t2400 is going to do exactly what you saw. But it doesn't fix anything. Leave it at n2400, or try changing both sides to t2400.

And try putting a small resistor inline with the big yellow wire, about 100 ohms or so. Without it, it's almost like a direct short from power to ground from one PIC to another. I should've caught this earlier.

[lerameur]

I will leave is at n2400 then
also, are you saying my pgd wire is messed up ??
I am not sure what it is ? it is programming the sending side.., I am not sure what you meant

The 100 ohm resistor did not do anything .