SerialCommunications Troubles
nomad
Posts: 276
Ref: SerialCommunications Troubles
hi,
i have a propeller professional Development Board aka PPDB
the board have a integrated RS232-Port and integrated blue LEDs
the board is running, all ok.
but i have some troubles with the serialCommunications.
what i can is:
send a string to my linux-box = no problem all is ok
what i will:
1) the board waiting for datas at RX
2) from the linux-box send a command (output = 1) as a string
= sendData = "1" is = ascci = 49
3) the board receive this datas,
if the datas are valid then the blue Led blinks
(in the future, the board control with this datas
the servos)
now the problems:
1) when i send "1" then receive the sometimes input (ascci 49) as
byte
== its possible that the receive DEC (1) not (ascci 49)????
2) i can't go this way: linux send, board receive and send back
this is in the moment not posible ???
timing-troubles
3) under windows with hyperterminal board send datas OK
4) if the board wait on incoming datas from hyperterminal
it's not run
it's the folowing stuff possible:
- 1) board wait for datas
- 2) linux send Datas to the board
- 3) board receive datas (not necessary)
- 4) if datas ok then led-blink (this is a must) for servos
- 5 goto 1
as attached files are : serialPropDevBoard111.spin
and the linux program : serialPropDevBoardxxx.spin ( *.cpp)
for any help tricks and tips i'm verry glad
Regards
nomad
here is the spin-code:
Post Edited (nomad) : 4/19/2009 1:37:40 PM GMT
hi,
i have a propeller professional Development Board aka PPDB
the board have a integrated RS232-Port and integrated blue LEDs
the board is running, all ok.
but i have some troubles with the serialCommunications.
what i can is:
send a string to my linux-box = no problem all is ok
what i will:
1) the board waiting for datas at RX
2) from the linux-box send a command (output = 1) as a string
= sendData = "1" is = ascci = 49
3) the board receive this datas,
if the datas are valid then the blue Led blinks
(in the future, the board control with this datas
the servos)
now the problems:
1) when i send "1" then receive the sometimes input (ascci 49) as
byte
== its possible that the receive DEC (1) not (ascci 49)????
2) i can't go this way: linux send, board receive and send back
this is in the moment not posible ???
timing-troubles
3) under windows with hyperterminal board send datas OK
4) if the board wait on incoming datas from hyperterminal
it's not run
it's the folowing stuff possible:
- 1) board wait for datas
- 2) linux send Datas to the board
- 3) board receive datas (not necessary)
- 4) if datas ok then led-blink (this is a must) for servos
- 5 goto 1
as attached files are : serialPropDevBoard111.spin
and the linux program : serialPropDevBoardxxx.spin ( *.cpp)
for any help tricks and tips i'm verry glad
Regards
nomad
here is the spin-code:
{
serialPropDevBoard111.spin
dd. 19.04.2009
******************************************************************************************
}
Con
_clkmode = xtal1 + pll16x
_xinfreq = 5_000_000
Rx = 31
Tx = 30
baud = 9600
OBJ
' Ser : "FullDuplexSerial"
Ser : "Extended_FDSerial"
Var
byte input '(from linux: 1)
byte output '(to linux: 5 as Dec)
Pub Start
dira[noparse][[/noparse]0]~~ ' Pin05 set output leds
outa[noparse][[/noparse]0]~ ' Pin05 set low
Ser.Start(Rx,Tx,0,baud)
repeat
Ser.Start(Rx,Tx,0,baud)
input:= Ser.RxTime(100)
waitcnt(clkfreq / 10 + cnt)
' make leds blink
'if input == 49
' !outa[noparse][[/noparse]0]
' some stuff to experiments
Ser.str(string("5")) ' send string
output := 5
Ser.dec(input) ' send
waitcnt(clkfreq / 10 + cnt)
{*************************************************}
Post Edited (nomad) : 4/19/2009 1:37:40 PM GMT
Comments
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Cheers,
Simon
www.norfolkhelicopterclub.com
You'll always have as many take-offs as landings, the trick is to be sure you can take-off again
BTW: I type as I'm thinking, so please don't take any offence at my writing style
the codeline
starts a new cog with the serial-driver (this is the FullDuplexSerial-object
you have to call this only ONCE and BEFORE your repeat loop
if call it over and over again. The cog that is running the serial driver stops and starts again and again
The stop and start of the serial cog takes some time and in this time some bits can get lost that you want to receive
best regards
Stefan
yesshes,
THANKS,
i'm stupid.
excuse
thanks for your answers
regards
nomad
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Cheers,
Simon
www.norfolkhelicopterclub.com
You'll always have as many take-offs as landings, the trick is to be sure you can take-off again
BTW: I type as I'm thinking, so please don't take any offence at my writing style
i hope this, that the code now working.
when i read your message here, in switzerland ist the time (sunday) evening at 19.00pm
today (monday) i work with the new code, and i hope all is ok
regards
nomad
all stuff are running (send/receive) and the stuff with the blue LED is also OK
thanks a lot
regards
nomad
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Cheers,
Simon
www.norfolkhelicopterclub.com
You'll always have as many take-offs as landings, the trick is to be sure you can take-off again
BTW: I type as I'm thinking, so please don't take any offence at my writing style