How send binary number out serial port on Duinomite?

[bvdb]

Hi Everyone,

I would like to send some binary data out the serial port and to the SD card.  If I send &HFF to the serial port is actually transmits the three ASCII digits 255.   Using MMBasic Ver 4.4

Could really use some hlpe here.

Thanks,

Bert

[Mr Hammond]

Hi,
Try Printing CHR$(&H255);
When I run:
10 PRINT CHR$(&H41);
it displays an A on the screen, which is a single byte of value &H41
Hope that helps

[bvdb]

Hi.  Can someone help me figure out how to read binary data on the Duinomite serial port in MMBASIC?

If you use the Line Input #1,A$ it works fine with ASCII data but does not work with binary data.

Regards,

Bert

[JohnS]

Looks to be described in the manual under SERIAL Communication.

John

[KeesZagers]

I'm not working with newer versions of MMBasic, but the open source version DMBasic 2.7 has a function V$=INPUT$(number,

• file-number). This function enters a number of bytes from either a file or serial port. The serial ports are configured for 8 bits, so in principle this should work.

[bvdb]

Hi Kees,

The A$=INPUT$(No, File#) only works with ASCII data being sent to the Duinomite.  If you send binary data it doesn't work. 

For now I am converting the binary data to ASCII hexadecimal but that's a pain and takes twice as many bytes to send the same amount of data.

So far I have not been able to figure out a way to receive binary serial data with the Duinomite board.

[KeesZagers]

I will check the DM 2.7 sources on this subject. As far as I know you can use the full 8 bit data in a string, however the display only shows the ASCII characters.

[JohnS]

I've used INPUT$ and it appeared fine regardless, same as any other Basic I've used.

I think it's a newbie misunderstanding.

John

[KeesZagers]

John, I like newbies, because I can teach them something 

A$=INPUT$(10,#1)
FOR x=1 TO 10
PRINT ASC(MID$(A$,x,1))
NEXT

This should give all 8 bit data, which comes either from a file or a serial input.

Kees

BTW Bert are you Dutch or Belgian?

[bvdb]

Hi Kees,

I'll try your suggestion.

I was born in Holland.  Lived there for 9 years then the parents moved us all to the USA where I lived for 35 years.  Been living in New Zealand for the past 26 years (yes I'm really old).

The entire family loves New Zealand.

Thanks for your help