verify serin serout
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Is there anyway for one stamp to send a byte to another, have the
other receive that byte and then have the receiver verify to the
transmitter that the receiver got that byte.
This is very important for my project.
Many thanks
Paul
other receive that byte and then have the receiver verify to the
transmitter that the receiver got that byte.
This is very important for my project.
Many thanks
Paul
Comments
pjw24@c... writes:
> Is there anyway for one stamp to send a byte to another, have the
> other receive that byte and then have the receiver verify to the
> transmitter that the receiver got that byte.
>
>
There are several wys. You could use flow control, which will assure
positive transmission. If you want "visual" proof, then when Stamp 2 receives
the
data, have that Stamp serout to the sending Stamp "R" or some similar
character. If the sending Stamp gets an "R" back then it will know that the
receiving
Stamp has the data.
Sid Weaver
W4EKQ
Port Richey, FL
[noparse][[/noparse]Non-text portions of this message have been removed]
' *** SLAVE BS2 ***
MyByte VAR BYTE
MAIN:
MyByte = 0 ' Just to prove 'MyByte' is changed by SERIN...
SERIN 4, 84, [noparse][[/noparse]MyByte] ' NOTE: Will wait forever, till byte.
' Use timeout parameter if this is not good
PAUSE 100 ' Pause allows Sender to get into SERIN
SEROUT 5, 84, [noparse][[/noparse]MyByte]
GOTO MAIN
'**** END of Slave BS2 Code '
'*** Sender BS2 ****
' (Start this program AFTER 'Slave' )
MyByte VAR BYTE
GotByte VAR BYTE
MyByte = 65 ' 65 is ascii "A"
MAIN:
GotByte = 0
SEROUT 4, 84, [noparse][[/noparse]MyByte]
PAUSE 100
SERIN 5, 84, [noparse][[/noparse]GotByte]
IF GotByte = MyByte THEN Success
' ELSE
SEROUT 16, 84 + 16384, [noparse][[/noparse]"Didn't Match", 13] ' Tell TERMINAL
GOTO Skip1
Success:
SEROUT 16, 84 + 16384, [noparse][[/noparse]"'A' Matched" , 13]
Skip1:
GOTO MAIN
Note this program expects the 'Slave' to
listen on its Pin4, 'Sender' to talk on
ITS Pin4. 'Sender' will listen on its
Pin5, 'Slave' will talk on ITS Pin5. A
220 series Resistor between the two
BS2 pin 4's and another between the
pin 5's will prevent damage in case of
accidents.
To use this, program the 'Slave' BS2
with its program, and set it off by itself.
Program the 'Sender' BS2, wire its pin 4,
5, and GND to the 'Slave' BS2. Keep the
PC connected to the 'Sender' BS2's serial
port -- you can put a Terminal on this
at 9600 baud and receive the status messages.
Note this assumes the two chips are pretty
close, as we're not putting an extra driver
between them or anything.
--- In basicstamps@yahoogroups.com, "justforgoyourmove" <pjw24@c...>
wrote:
> Is there anyway for one stamp to send a byte to another, have the
> other receive that byte and then have the receiver verify to the
> transmitter that the receiver got that byte.
>
> This is very important for my project.
>
>
> Many thanks
>
>
> Paul