Use qualifier with 20m2 hserin??
- Thread starter jims
- Start date
neiltechspec
Senior Member
Suggest looking at manual 2 for hserin on M2 parts.
You can't use a qualifier.
You can't use a qualifier.
Thank you neil...I see it now. Was expecting to see a statement like; "qualifier not supported on m2 chips when use Hserin". JimS
Jim,
Hserin on M2 Chips can only receive 2 bytes before the receive buffer is full. Any further bytes will overwrite the current bytes in the buffer. This means that the bytes must be processed (Moved to another variable) before any further bytes can be received.
You can receive two bytes, process them, then receive two more. But the device sending the data must wait long enough between sending byte pairs for the previous bytes to be processed. The first two bytes can be used as a "qualifier" in code with an IF statement.
Personally I have found no practical use for HESERIN on M2 parts.
Hserin on M2 Chips can only receive 2 bytes before the receive buffer is full. Any further bytes will overwrite the current bytes in the buffer. This means that the bytes must be processed (Moved to another variable) before any further bytes can be received.
You can receive two bytes, process them, then receive two more. But the device sending the data must wait long enough between sending byte pairs for the previous bytes to be processed. The first two bytes can be used as a "qualifier" in code with an IF statement.
Personally I have found no practical use for HESERIN on M2 parts.
Changed to a 20X2 & trying to use this code . It works OK without the qualifier. What am I doing wrong?? Thank you, JimS
Code:
'*************************************************
'* Picaxe 20x2 uses hserin with qualifier and
'* select case to turn B.7 high (ON) or low (OFF).
'*************************************************
symbol rcv_data=b1
#picaxe 20x2
SetFreq M8
HSerSetup B9600_8, %000 'Setup baud 9600 @ 8Mhz
' "H" = 72 "L" =76 .
main:
Do
Do
HSerIn 0,1 {,("A")} 'Put hserin data Into s pad "0".
w4=@ptr
Loop Until w1 <> $FF 'Wait for data in.
Select Case w4
Case "H" : High B.7 'If data is H then high B.7
Case "L" : Low B.7 'If data is L then low B.7.
End Select
Loop
Last edited:
Thank you Hippy....The PE6 syntax checker doesn't like this statement with the qualifier. When I comment out the qualifier portion it is OK & the code runs on the simulator. JimS
Code:
HSerIn 0,1 '{,("A")} 'Put hserin data Into s pad "0"Thank you..srnet. That did it. I removed the "curly brackets" & it passes the syntax check. JimS