16bit variable and degrees conversion

[RFsolution]

Thank you All ,

I will have a look and give it a try this weekend, but both Ingvar and Luciano
pointed me in the direction

I only need to check the SERIN2 command to see how to handle the incomming string in my previous msg

Precision is 2 decimals

The project is to read out 2 position absolute encoders
which are polled by a controller over a RS485 line at 9600bd

Thanks again to everyone who helped me

Walter

[Ingvar]

Ok, since you only need 2 decimals and my code gives 3 you can use the extra precision to round the result .......

IntPartOfPos1 = 16bitPosition1 ** 360
FracPartOfPos1 = 16bitPosition1 * 360
FracPartOfPos1 = FracPartOfPos1 ** 1000
FracPartOfPos1 = (FracPartOfPos1 + 5) / 10
LCDOUT DEC3 IntPartOfPos1, ".", DEC2 FracPartOfPos1

..... should give you a correctly rounded result with 2 decimals.

/Ingvar

[RFsolution]

Hmm looks that I'm doing something wrong


I receive serial at 9600 bd N8,1 the following in hex

example:
21 AD 34 01 22 EF 23 02

loop:
AZ var word
EL var Word

Serin2 portb.2,84,[wait ("!"),AZ] => "!" is the ascii represenataion of 21 hex
would like to store AD 34 in variable AZ, 01 dont care
then the same for EF 23 in EL

Use an SP485 RS485 driver in front

[Luciano]

Hi,

Your example data:
21 AD 34 01 22 EF 23 02

===============================================
' The code (Not tested)

my_array VAR BYTE[7] ' Define array variable with 7 locations

SERIN2 IN_PIN, BAUD,[WAIT("!") STR my_array\7]

' Waits for the string "!", then collects the next 7 characters.
' (21 HEX = ASCII !)


===============================================

This could be valid data:
21 21 21 01 22 21 21 02

Make sure you verify that "01" "22" "02" are in the
right position in the array.

* * * * * *

From PicBasic manual:

An optional Timeout and Label may be included to allow the program
to continue if a character is not received within a certain amount of time.
Timeout is specified in 1 millisecond units. If the serial input pin stays in
the idle state during the Timeout time, the program will exit the SERIN2
command and jump to Label.

* * * * * *

PicBasic Pro Code that demonstrates the use of modifiers
with the Serin2 and Serout2 commands.

http://www.microengineeringlabs.com/...bp/ser2mod.bas


Luciano

[RFsolution]

Everything is working

I would like to thank those who post some replys

If someone is in the Belgian Area, I will certainly offer a Beer

Walter