How to do serial command with 2 stop bits?

Hello,

I have an aplication that uses 2 stop bits (4800,N,8,2) and I don't know how to do it using PBP compiler.
It is possible?
Can you help me please?

Thanks for your support

Pimentel

Stop bits are at "IDLE" level.
So if you use ...

DEFINE CHAR_PACING xxx

where xxx = 1 bit period in us, then you're good to go.
<br>

Quote:

---

Originally Posted by Darrel Taylor

Stop bits are at "IDLE" level.
So if you use ...

DEFINE CHAR_PACING xxx

where xxx = 1 bit period in us, then you're good to go.
<br>

---

Darrel, Can you help me?
I restarted my old project and now I need to send a serial data in 4800 TTL levels , 8 data bits and 2 stop bits. How to do it using PBP?
I have to simulate the second stop bit ok? And 1 bit in 4800 baud ~ 208us
The 4800 baud is missing in the serout command mode but is possible to use char_pacing in microsenconds
Using the serout2 command is possible to use a {pace} but just in milisenconds !
How to do it then???

Thanks

Pimentel

http://melabs.com/resources/ser2modes.htm
Has the modes for 4800.

Pimentel,

You could try something like this ...Assuming you have PBP 2.60

Code:

---

DEFINE OSC 8

BuffLength  CON 32
Buff        VAR BYTE[BuffLength]
Idx          VAR BYTE
SerPin      VAR PORTC.6

HIGH SerPin
PAUSE 100

Main:
    ARRAYWRITE Buff,["Hello World!",13,10,0]
    GOSUB SendBuff
    PAUSE 1000
GOTO Main

;----------------------------------------------------
SendBuff:
    FOR Idx = 0 TO BuffLength -1
        IF Buff(Idx) = 0 THEN EXIT
        SEROUT2  SerPin,188,[Buff(Idx)]
        PAUSEUS 220
    NEXT Idx
RETURN

---

Quote:

---

Originally Posted by mackrackit

http://melabs.com/resources/ser2modes.htm
Has the modes for 4800.

---

Thanks! I already read this publication but I am using 2 stop bits!!!

Quote:

---

Originally Posted by Darrel Taylor

Pimentel,

You could try something like this ...Assuming you have PBP 2.60

Code:

---

DEFINE OSC 8

BuffLength  CON 32
Buff        VAR BYTE[BuffLength]
Idx          VAR BYTE
SerPin      VAR PORTC.6

HIGH SerPin
PAUSE 100

Main:
    ARRAYWRITE Buff,["Hello World!",13,10,0]
    GOSUB SendBuff
    PAUSE 1000
GOTO Main

;----------------------------------------------------
SendBuff:
    FOR Idx = 0 TO BuffLength -1
        IF Buff(Idx) = 0 THEN EXIT
        SEROUT2  SerPin,188,[Buff(Idx)]
        PAUSEUS 220
    NEXT Idx
RETURN

---

---

Thanks Darrel,

I am using 2.46 version!
I will test it idea today on job. I do not know if go work because I already tested it:
SEROUT2 TX,188,[$00,$50,$42,$01,$0A] 'ex: 14.2500 MHz

and other mode:
SEROUT2 TX,188,[$00]: PAUSEUS 208 '1/4800 ~208us
SEROUT2 TX,188,[$50]:PAUSEUS 208
SEROUT2 TX,188,[$42]:PAUSEUS 208
SEROUT2 TX,188,[$01]:PAUSEUS 208
SEROUT2 TX,188,[$0A]:PAUSEUS 208

but without sucess!

Why do you used a pauseus of 220us?
I used a 4MHz cristal as osc

Thanks again

Pimentel

Quote:

---

Originally Posted by Pimentel

Thanks Darrel,

I am using 2.46 version!
I will test it idea today on job. I do not know if go work because I already tested it:
SEROUT2 TX,188,[$00,$50,$42,$01,$0A] 'ex: 14.2500 MHz

and other mode:
SEROUT2 TX,188,[$00]: PAUSEUS 208 '1/4800 ~208us
SEROUT2 TX,188,[$50]:PAUSEUS 208
SEROUT2 TX,188,[$42]:PAUSEUS 208
SEROUT2 TX,188,[$01]:PAUSEUS 208
SEROUT2 TX,188,[$0A]:PAUSEUS 208

but without sucess!

Why do you used a pauseus of 220us?
I used a 4MHz cristal as osc

Thanks again

Pimentel

---

Darrel,
The test failed !
If you or somebody has other idea please let me know, ok?
Thanks

Pimentel

Pimentel , Why not just use 4800 baud, 8 data bits, 1 parity bit , and 1 stop bit? Just dont change the partiy bit's state... It's worked for me in the past...

Dave Purola,
N8NTA

Quote:

---

Originally Posted by Dave

Pimentel , Why not just use 4800 baud, 8 data bits, 1 parity bit , and 1 stop bit? Just dont change the partiy bit's state... It's worked for me in the past...

Dave Purola,
N8NTA

---

Dave, it seens a god idea. However I never used parity with serout2 command. Can you to post some lines as sample please?

Thanks

Pimentel