Communicate with PC at baud rate :115200 bps

[skimask]

I can communicate at 9600 with higher than this the data is not true it's corrupted

2- 4MHZ or 8MHZ crystal
3- PIC16F877A or PIC18f452 or PIC4220

Says right in the back of the manual that a faster clock speed than 4Mhz will most likely be needed with a 4Mhz crystal, like quite a bit faster.
If you're using a '452, turn on the 4xPLL and use the 8Mhz crystal. That'll give you 32Mhz to play with.

[precision]

But i always use 115200 Baud in nokia 3350 sms zone alarm with this code.

DEFINE OSC 12 ( I use 11.0592 mhz xtal after define osc 12 )

OUTPUT PORTC.6 '-- SERIAL Port TX
INPUT PORTC.7 '-- SERIAL Port RX

DEFINE HSER_RCSTA 90h
DEFINE HSER_TXSTA 24h
DEFINE HSER_SPBRG 5 ' 115200 Bauds with 0% error

HSEROUT [X,Y,Z]

[skimask]

But i always use 115200 Baud in nokia 3350 sms zone alarm with this code.

Well, that'll work too, because you're using the HARDWARE USART.
The note at the back of the book is for SERIN(2)/SEROUT(2).
The O/P didn't specify if hardware or software serial was being used...

[precision]

Well, that'll work too, because you're using the HARDWARE USART.
The note at the back of the book is for SERIN(2)/SEROUT(2).
The O/P didn't specify if hardware or software serial was being used...

You 'r right skimask,
We cannot achive 115200 baud with SERIN2, According to manual and limitation of compiler,
But i think one day we all will use SERIN2 at 115200 baud as below,

DEFINE OSC 20
INCLUDE "My_Lcd.bas"
INCLUDE "DT_INTS-14.bas"
INCLUDE "LCDbar_INC.bas"
INCLUDE "DT_INS-SERIN2.bas"


B0 var word
Main:
@ DT_SERIN2 , 115200, [B0]

LCDOUT $fe,1, "Value", DEC 5 B0
pause 200
goto main

Sory Sir Darrel Taylor, its impossible for us to achive 115200 baud in serin2 mode without your MAGIC code.

[skimask]

You 'r right skimask,
We cannot achive 115200 baud with SERIN2, According to manual and limitation of compiler,
But i think one day we all will use SERIN2 at 115200 baud as below,

I don't know if it works or not...but...
If you DEFINE OSC 4...
then try to run DEBUG at 9600...
but actually clock your PIC at 48Mhz...
(or DEFINE OSC 4, run DEBUG at 19200 and clock at 24Mhz)
You MIGHT get 115,200.
Don't know how reliable it'll be though...

[iugmoh]

Oky Here is the code after trial it on PIC16f877a to communicate with PC at 115200 bps baud rate and it's working fine without any error
===============================================
DEFINE OSC 20
' Set receive register to receiver enabled
DEFINE HSER_RCSTA 90h

' Set transmit register to transmitter enabled
DEFINE HSER_TXSTA 24h

' Set baud rate
DEFINE HSER_BAUD 115200

' Set SPBRG directly (normally set by HSER_BAUD)
DEFINE HSER_SPBRG 10

main:
HSEROUT ["yes its working",13,10]
pause 300
goto main

end