Thread: Hserin

1ste post!

hello all. I seem to have a problem with serial receive.


this is the code that I use for sending the data, I already used +10 because it seems that it doesn't do any thing when sending a zero

Code:

HSerout [day + 10]
HSerout [month + 10]
HSerout [year + 10]
HSerout [hour + 10]
HSerout [minute + 10]
HSerout [second + 10]

and this is the code that I use for receiving

Code:

HSerin 3000,TimeOut, [CurrendDate(0)]
HSerin 100,TimeOut, [CurrendDate(1)]

HSerin 100,TimeOut, [CurrendDate(2)] '?
HSerin 100,TimeOut, [CurrendTime(0)] '?

HSerin 100,TimeOut, [CurrendTime(1)]
HSerin 100,TimeOut, [CurrendTime(2)]

the problem is that if I send "10,11,12,13,14,15" I'll receive "10,11,13,13,14,15" any explanation for this? I tryed every thing

Welcome to the forum.

Here's a few suggestions you may find useful for synchronizing serial communications, and shrinking your code size in the process.

1. Try using the STR modifier with HSEROUT/HSERIN to send/receive strings of data rather than using multiple HSEROUT/HSERIN lines to send/receive.

2. Use some type of synchronization character to lock onto the first byte or "synch up" with the 1st character.

Note: This is just a simple example. Change whatever you need to like the TimeOut value, label, array size, baud rate, etc,,.

Code:

DEFINE  OSC 20
DEFINE  HSER_BAUD 9600  ' Use 9600 baud
DEFINE  HSER_CLROERR 1  ' Auto clear over-run errors
RCSTA = $90 ' SPEN & CREN = 1	          
TXSTA = $24  ' TXEN & BRGH = 1                    
TimeDate VAR BYTE[6]

Main
    HSERIN 5000,TimeOut,[WAIT("A"),STR TimeDate\6]
    HSEROUT ["Rcvd string: ", STR TimeDate\6,13,10]    
    GOTO Main

TimeOut:
    HSEROUT ["Nada",13,10]
    GOTO Main

Use a terminal program to send A369621 to your PIC. If all's well, you'll see;

Rcvd string: 369621

If all's not well, you'll see;

Nada

This will save you a TON of code space, and it's much easier to manage.

well it seems to work now but i already got a other problem:

if i try to put a value of a variable into the array, then the interrupt routine(timer) stops working!

Code:

TimeDate(1) = DayREC			
TimeDate(2) = MonthREC
TimeDate(3) = yearREC
TimeDate(4) = HourREC
TimeDate(5) = MinuteREC
TimeDate(6) = SecondREC

i don't understand why it does the variables are bove byte's accept that the other varaible is in a array

For array you must use bracket instead of parenthesis but it's maybe a typing error...

if not, can you post your whole code ?

What is the "5000" used for in the following statement



Main
HSERIN 5000,TimeOut,[WAIT("A"),STR TimeDate\6]
HSEROUT ["Rcvd string: ", STR TimeDate\6,13,10]
GOTO Main


Looking all through the PBP manual doesn't shed light on this question.

thanks...chris

After rereading the discription of the HERIN command, it would appear that the syntax:

Herin 5000, Timeout, [.....]

indicates that parity is turned on and that the parity error routine is at address "5000".

Is this corrrect?

/chris

Thx for your help all, i changed some things and it works !