MVCOM and null bytes

Dreamland Fantasy · Post by **Dreamland Fantasy** » Fri Aug 18, 2006 4:46 pm

Hi there,

I'm trying to use MVCOM to send a byte sequence via the RS-232 port which includes a terminating null byte ($00 or 0x00). Monitoring what is being sent using a serial port monitor the null byte does not appear to be included in what is sent, although everything else is up to that point. E.g. if I send 1,2,3,4,5,0 all I see is 1,2,3,4,5 on the serial port monitor.

Can anyone tell me if MVCOM sends null bytes or does it ignore them? If it does ignore them is there a way around this?

Kind regards,

Francis.

Flype · Post by **Flype** » Fri Aug 18, 2006 4:58 pm

if you use the command ComSendByte(HCom.l,*Buffer,BufferLen)
there's shouldn't be any problem.

but if you send a string, the last '0' char won't be sent.

Dreamland Fantasy · Post by **Dreamland Fantasy** » Fri Aug 18, 2006 5:55 pm

Hi Flype,

I should have stated that it is version 1.2 of the MVCOM library that I'm using. ComSendByte() command has been removed on this version.

I'm using the ComWrite() command.

Kind regards,

Francis.

Flype · Post by **Flype** » Fri Aug 18, 2006 7:51 pm

sorry i didn't think about the version.
but anyway it's the same result.

just use ComWrite() with Len() + 1 for the extra '0' byte.
not tested but it should work.

Code: Select all

MyBuffer1.s = "0123456789"

If ComWrite(Hcom, @MyBuffer1, Len(MyBuffer1) + 1)
	;Your code
EndIf

tell me.

Dreamland Fantasy · Post by **Dreamland Fantasy** » Fri Aug 18, 2006 8:15 pm

@Flype

Thanks, I'll give that a try!

Kind regards,

Francis.

Dreamland Fantasy · Post by **Dreamland Fantasy** » Fri Aug 18, 2006 8:25 pm

@Flype

Yep, that seems to work!

Many thanks!

Kind regards,

Francis.

Flype · Post by **Flype** » Fri Aug 18, 2006 8:30 pm

Dreamland Fantasy wrote:@Flype

Yep, that seems to work!

Many thanks!

Kind regards,

Francis.

can't let an amiga user without answer

Dreamland Fantasy · Post by **Dreamland Fantasy** » Fri Aug 18, 2006 8:35 pm

can't let an amiga user without answer

It's just a pity that this is for a work related project using a PC! :roll:

Kind regards,

Francis.

Flype · Post by **Flype** » Fri Aug 18, 2006 8:37 pm

do you program on amiga ?

i recently tested Cubic IDE - that's a pretty good editor.

Dreamland Fantasy · Post by **Dreamland Fantasy** » Fri Aug 18, 2006 8:49 pm

@Flype

I program on AmigaOS4 using Cubic IDE too (since PureBasic doesn't support OS4 or even work on it -- yet!

). I also have BITbyBIT Software's Advanced Visual Developer software.

Unfortunately I don't have a lot of experience with C/C++ programming, but I'm learning!

Kind regards,

Francis.

Flype · Post by **Flype** » Fri Aug 18, 2006 8:52 pm

AmigaOS4

OS4, lucky guy you are.

Dreamland Fantasy · Post by **Dreamland Fantasy** » Fri Aug 18, 2006 9:02 pm

@Flype

lucky guy you are.

I'd feel even luckier if I could get a native AmigaOS4 version of PureBasic 4.00!

It must be nearly that time for me to pester Fred again!

Kind regards,

Francis.

Flype · Post by **Flype** » Fri Aug 18, 2006 9:09 pm

yes, i would love to see pb4 ported to amigaos to.
but fred's team have an already very big amount of work with the win/linux/macos versions.

Dreamland Fantasy · Post by **Dreamland Fantasy** » Fri Aug 18, 2006 9:52 pm

@Flype

Yeah, I know that Fred and co. do have a lot of work with all the different versions on the go. That doesn't detract from the fact that I would love to have a native version for OS4.

Maybe everyone who wants an updated AmigaOS 3.x/4.x version should put a kitty together to encourage them!

Kind regards,

Francis.