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Forum Index : Microcontroller and PC projects : Printing binary values to serial consol

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factotum
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Joined: 29/10/2017
Location: United Kingdom
Posts: 18

Posted: 03:14pm 30 Nov 2018

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I'm having trouble with limited bandwidth on a LoRa telemetry link that takes data PRINTed to the MM console. One thought was to recode the data in binary thus reducing its size, but I can't see any way of printing binary bytes to the console. Just wondered if there was.

CaptainBoing

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Joined: 07/09/2016
Location: United Kingdom
Posts: 2171

Posted: 03:36pm 30 Nov 2018

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have a look at the BIN$() function

it takes a numerical argument and converts it to a stream of 1's & 0's

so

>print 10
10
>print bin$(10,8)
00001010

factotum
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Joined: 29/10/2017
Location: United Kingdom
Posts: 18

Posted: 03:42pm 30 Nov 2018

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Thanks, but that's kind of the opposite of what I want to do. But now you've made me think that probably what I need is to use PRINT CHR$(binary byte)

JohnS
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Joined: 18/11/2011
Location: United Kingdom
Posts: 4133

Posted: 03:53pm 30 Nov 2018

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Yes, use CHR$

John

CaptainBoing

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Joined: 07/09/2016
Location: United Kingdom
Posts: 2171

Posted: 04:02pm 30 Nov 2018

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ok, to take a binary string of 1s & 0s and print the decimal version you have to process it as a string... like so

> a$="00001111"
> print Val("&b"+a$)
15
>

what this does is use the Val function to extract a decimal value from a string, but you change the radix of the string by prefixing with "&b" which means binary.

other prefixes are &h - Hexadecimal, and &o - Octal

DOH! I read your post again ... yes the value you hold in a variable 0-255 in value - just print the CHR$() and you'll get your character.Edited by CaptainBoing 2018-12-02

factotum
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Joined: 29/10/2017
Location: United Kingdom
Posts: 18

Posted: 05:07pm 30 Nov 2018

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Thanks all.

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