ESP8266 Community Forum

Posted: **Thu Feb 16, 2017 10:01 am**

In the process of working on a new Driver Tutorial for the ESPBasic Series I am looking today to implement some Decimal-to-BCD and BCD-to-Decimal subroutines.

What I have done so far:

1. BCD-to-Decimal subroutine:

Code: Select all

    [DEC]
    hv = val >> 4
    hl = val and 15
    val = hv*10 + hl
    wait

2. Decimal-to-BCD subroutine:

Code: Select all

    [BCD]
    d = int( val / 10 )
    d1 = d * 10
    d2 = val - d1
    val = d*16 + d2
    wait

If you have any other idea please feel free to share it, looking forward to see smarter solutions that that. I'm sure they are!

Happy breadboarding,
TJ.

Original Article with Test Program Code: ESPBasic Series - DEC to BCD and BCD to DEC conversions

Posted: **Sun Feb 19, 2017 6:08 pm**

Function DecToBcd(val) as Byte
DecToBcd=(va/10)*16+va%10
End Function

Function BcdToDec(va) as byte
BcdToDec=(va/16)*10+va%16
End Function

Posted: **Thu Feb 23, 2017 5:44 pm**

Interesting.
I have been looking at Decimal to Binary conversion as to translate for a string to SPI for a DigiPot.
256 steps of the wiper etc.
Any input welcome.

Posted: **Fri Feb 24, 2017 3:11 am**

neuronesp wrote:Interesting.
I have been looking at Decimal to Binary conversion as to translate for a string to SPI for a DigiPot.
256 steps of the wiper etc.
Any input welcome.

You can take a look here: ESPBasic decimal-to-binary conversion subroutine code and test program

ESP8266 Community Forum

DEC-to-BCD and BCD-to-DEC conversions

DEC-to-BCD and BCD-to-DEC conversions

Re: DEC-to-BCD and BCD-to-DEC conversions

Re: DEC-to-BCD and BCD-to-DEC conversions

Re: DEC-to-BCD and BCD-to-DEC conversions