Multi-digit word variable to string

[Amoque]

Thank you, Henrik.
I love when the answer is shorter than the question!

To be clear then, it appears that DEC is not a command of itself, but a parameter of some other display functions; it is only valid in an output string to an LCD or other output device (ie serial port) or construct (array-obviously).

I hope it is not too much trouble for any who follow this thread to correct my interpretation as well as to clarify one more point? Can an entry point be specified, as ARRAYWRITE MSG[14], [DEC RawT] so that the variable may be positioned in a larger array? I saw little on this when searching

It is possible to specify an entrypoint, so that (for example) the string "Temperature = XXX degrees" can be dynamically updated with Arraywrite ARRAYNAME[entrypoint] = [DEC variable]

[HenrikOlsson]

Hi,
That's correct. DEC is not a command by itself, it's what the manual calls a modifier among others (BIN, HEX etc).

I've never tried it but I'm pretty sure you can start anywhere in the array in the way you show.

/Henrik.

[astanapane]

Hello all,

this is an old post. I'm not sure if my question fits right to here.

I have a temperature values and i would like to send them to a display from 4D Systems.

At the moment i was using the serial SPE commands as 4D Systems calls it, and they have exactly the command to send those variables.

Then i tried their "new" Visi Genie enviroment, which allows you to create "forms" and add any image, button etc.

I have fniished the easy task inside the Visi Genie and i'm in front of a problem that i need to transform the variable to string.

As from 4D Systems:

Visie-Genie writes to pre-defined objects so in this case it is a pre-defined string object so all we have to do is convert what we need to send to a string, calculate a checksum and send. This is where Genie differs from Serial as in the Serial mode you are sending a serial command to the display which is translated to a command to do a supported function on the display.

It is the first time i had to do a task with Checksum and found it interesting way by XORing all the bytes. In a very small code i tryied it worked, as i sent based on 4D Systems the command to change the constrast and it worked.

command var byte
constrast var byte
CS var byte

' -----------------------------------------------------------------------------|
' [ LCD Initialization ] |
'------------------------------------------------------------------------------|
' FIRST TIME BOOTUP: We give plenty of time for tbe LCD '
lcdinit:
pause 2000
command = $04
contrast = $06
gosub checksum
hserout [command,contrast,CS]
hserin [wait(6)]
pause 100


high green
return

'------------------------------------------------------------------------------|
' CHECKSUM |
'------------------------------------------------------------------------------|
checksum:
cs = 0
cs = cs ^command
cs = cs ^ contrast
return

Now i'm trying to see the way to convert var to string. I have read the manual written in 2013

"A numeric value preceded by a pound sign ( # ) will send the ASCII representation of its decimal value, up to 65535. For example, if W0 = 123, then #W0 (or #123) will send "1", "2", "3"."

Is that the right way? May i have your help please?

[Ioannis]

Or use DEC modifier like DEC k. If k=5, DEC k will send out the "5".

With DEC you can also specify how many digits you will send. E.g. DEC3 will send 3 digit of the variable with the appropriate leading zeros in this case to fit the number of digits requested.

If k=15 then DEC3 k will send "0", "1", "5"

Ioannis

[astanapane]

Thanks so much Ioanni,

will try it out.

[astanapane]

Dear all,

i have some problem regarding the conversion of a variable to string.

I have the following code.

''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'                         VAR for IR to LCD          '
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
IRCS         var byte       ' this is the checksum for the IR required in external display command
TEMP         var word       ' this is the word variable for TEMP 
temperature  var word       ' for result and output to lcd 
TEMPIR       var word       ' set a variable tempir 
Remainder    var word       ' Get the remainder = tempir//50

'------------------------------------------------------------------------------*
'                    Measure IR object temp sent to uLCD                          *
'------------------------------------------------------------------------------*
object:

reg    = $07             ' based on the datasheet $07 is the object's temp
addr   = %10110100       ' $B4  binary value: %10110100
i2cwrite SDA, scl, addr  ' send write command, shift the address B4, 8 bits where LSB is W = 0
i2cwrite sda, scl, reg   ' register is $07

addr   = %10110101       ' $B5  Binary value: %10110101
i2cwrite sda, scl, addr  ' sends read command, shift the address B5, 8 bits where LSB is R = 1, clock idles low
i2cread SDA, SCL,addr,reg,[temp.lowbyte,temp.highbyte] ' reg = $07


tempir = (temp.highbyte << 8) + temp.lowbyte

temperature  = tempir/50         ' based on the manual we need to divide by 50 or 0.02
temperature  = temperature - 273 ' subtract 273 for Degree in C,actually is 273,15
remainder    = (tempir*2)//100   ' multiply x 2 and get the remainder //100

pause 100
gosub display
return

'------------------------------------------------------------------------------*
'                    IR  Display 1 the parameters                              *
'------------------------------------------------------------------------------*
display: ' IR TEMP 
hserout2 [$73,$00,$02,$12,$00,$ff,"IR TEMP:",00]
Hserin2  timeout,error,[wait(6)]
hserout2 [$73,$08,$02,$12,$F8,$00,dec2 temperature,".",dec2 remainder,"*C",00] 'this one works on display 1 which doesnt require CS 
Hserin2  timeout,error,[wait(6)]
 

gosub checksum2    
hserout [$01,$0F,$00,temperature,remainder,IRCS]   ' this one doent work, i get random numbers on the display. 
Hserin  timeout,error,[wait(6)]
return

'------------------------------------------------------------------------------|
'                               CHECKSUM IR                                    |
'------------------------------------------------------------------------------|
checksum2:
IRCS = 0
IRCS = $01 ^ $0F ^ $00 ^ temperature
IRCS = IRCS ^ remainder
return

One i do the CS calculation, and returning from checksum2 the following is not working as expectred.

hserout [$01,$0F,$00,temperature,remainder,IRCS]   ' this one doent work, i get random numbers on the display. 
Hserin  timeout,error,[wait(6)]
return

even if i try the following.

hserout [$01,$0F,$00,dec2 temperature,dec remainder,IRCS]   ' this one doent work, i get random numbers on the display. 
Hserin  timeout,error,[wait(6)]
return

Is there a way to convert the variable to string ourside from a preset command like the HSEROUT?

for example is there a way to make something like this in PBP?

temperature = #temperature.

[Ioannis]

If your variable is ranging from 0 to 65536 (the maximum that word can hold) obviously the HSEROUT command cannot handle that. With HSEROUT you can use only ascii values.

So, as you have already find out, the dec2 temperature does work. Maybe your value is beyond 2 decimals so you have to use dec5 to be sure and cover all temperature values?

Ioannis

[richard]

i have had three or four people say i'm not a good teacher,
i'm not surprised since i never have been or ever aspired to be one

so what do think of my new signature ?

Warning I'm not a teacher , one on one Tuition with flowery prose like a gushing embroilment is not my style

[astanapane]

Richard,

i may need to apologize for my behaviour as well. I do not expect that from you.

Do what you know better to do, in this particular field. Everyone has its bad and good days. We are all in the same boat.

You never know one day, i may be some how useful for you.....

Take care and try to smile.