Microcontroller Basic RS232

[xavierbe]

Hi,

( sorry for my bad english )

i have a question

who can i communicate in basic from à pic to another pic
16F628

I will do a test
I take 2 micro

1 send anything on first and on the other one recive on the sec (RX-TX)

but i can't program it

i don't know the instructions and i didn't found it on the web and on french forums



if anyone have à little peace of code to show how to sends data
on RX TX


that ( serait ) helpfull


thank you

 

[Nigel Goodwin]

Check my tutorials.

 

[xavierbe]

thanks but all your tuto's are in ASM

and i seek in basic or C

 

[Nigel Goodwin]

But you never mentioned that?, and you still haven't mentioned what dialect of the languages you're looking for.

 

[xavierbe]

heu i have said

Hi,

who can i communicate in basic from à pic to another pic
16F628

sorry ( i can't good speak english only read )

 

[mister_e]

Xavier, that's a French name, there's also this 'à' in his previous quote... "and on french forums" and finally (serait) in his first message soooooooooooooo... so i'm pretty sure Xavier is French... like me

Xavier, which compiler(s) are you using?

 

[ronsimpson]

I use Pic Basic Pro. (software compiler) (BASIC)
You can download the manual.

PIC-1 has 8 buttons connected to an 8 bit port. It any button or buttons are pushed data is sent. 1110111= is button 4, 1110011= button 4,3 is pushed.
Data format = $,data,1/data,CR or $,11101111,00010000,CR
If data is sent then it is output on portB.
If no data is sent for 0.3 seconds then 11111111 is output on portB.

Here is most of the software for the receiver. (PIC-2)
'**********************************************************
'data= $, buttons, 1/buttons, CR
'button 5 pressed = $, 11101111, 00010000, CR
'if no command in .3 sec then release all buttons
'if button and 1/buttons do not equal or no CR then error
'**********************************************************
receiveloop:
HSERIN 300,timeout,[wait ("$")] '
hserin 30,timeout,[char1, char3]
'The Rx will wait for the $ then load from there.
high errorled 'turn off error led
if char3 <> cr then
low errorled 'indicate error
goto receiveloop
else
portb=char1 'push buttons
goto receiveloop
endif
timeout:
portb=$ff 'no buttons
high errorled 'reset error
toggle test 'test
goto receiveloop

 

[gramo]

1 send anything on first and on the other one recive on the sec (RX-TX)

but i can't program it

i don't know the instructions and i didn't found it on the web and on french forums

There's deffinetly heaps of info for em out there, not sure exatly what your application is , but just wondering if you have ever programmed a PIC before or used a higher language in the past to program your PIC's?

 

[xavierbe]

i have already programed (16f876) PIC
in Basic and in C
little things - LCD,LED,...,etc.

the application is

in the first time transmit INT or DOUBLE from a pic to an other pic
then in a second time transmit CHAR
and in the third time

send data from RS232 <-> PIC
with the physical UART from the pic (16f876)


i prefer program in BASIC but C is not a problem
but not ASM

Xavier, that's a French name, there's also this 'à' in his previous quote... "and on french forums" and finally (serait) in his first message soooooooooooooo... so i'm pretty sure Xavier is French... like me

Xavier, which compiler(s) are you using?

yes i'm french ^^

i use pbp compiler pro

your example isn't complet :s

 

[mister_e]

Ok then, you'll need to use HSERIN/HSEROUT if you want to use the Built-in USART, DEBUG/SEROUT/SEROUT2 etc etc if you want to use specific pins.

Ron gave you something to start, there's a few example in the manual, few on Melabs Website, and tons on the Melabs PicBasic forum
https://www.picbasic.co.uk/forum/

HTH

 

[BaCaRdi]

Couldn't you use a external on change interrupt to know when serial data is incoming, I would think this would make more sense instead of always checking for incoming data, well that is how I do it. But then again we don't know the big picture here.

-BaC

I use Pic Basic Pro. (software compiler) (BASIC)
You can download the manual.

PIC-1 has 8 buttons connected to an 8 bit port. It any button or buttons are pushed data is sent. 1110111= is button 4, 1110011= button 4,3 is pushed.
Data format = $,data,1/data,CR or $,11101111,00010000,CR
If data is sent then it is output on portB.
If no data is sent for 0.3 seconds then 11111111 is output on portB.

Here is most of the software for the receiver. (PIC-2)
'**********************************************************
'data= $, buttons, 1/buttons, CR
'button 5 pressed = $, 11101111, 00010000, CR
'if no command in .3 sec then release all buttons
'if button and 1/buttons do not equal or no CR then error
'**********************************************************
receiveloop:
HSERIN 300,timeout,[wait ("$")] '
hserin 30,timeout,[char1, char3]
'The Rx will wait for the $ then load from there.
high errorled 'turn off error led
if char3 <> cr then
low errorled 'indicate error
goto receiveloop
else
portb=char1 'push buttons
goto receiveloop
endif
timeout:
portb=$ff 'no buttons
high errorled 'reset error
toggle test 'test
goto receiveloop

 

[mister_e]

USART interrupt would be better

 

[xavierbe]

why usart ?and not use the uart ( it is integrated in my 16f872)

i will in a first time just
run a little program
who

send a Char

from one pic to another with RX TX

so i see the settings from the registers
and so i cam upgrade this code (basic)
for my application ^^

 

[BaCaRdi]

eremm

UART: Universal Asynchronous Receiver/Transmitter
USART: Universal Synchronous Asynchronous Receiver Transmitter
We can also use synchronous here We beat you ;Þ

-BaC

 

[donniedj]

thanks but all your tuto's are in ASM...

Tough 7890

 

[xavierbe]

Tough 7890

? i haven't understand