> Well, I was mistaken. PIC only offers assembler and C. There are other
> tools available, but not directly available from them.
> > Unless things get very complicated you are better off with the PICAXE IMHO.
> > Doc Custer
> Retired Software Engineer and sometime Audiologist
> > I agree Doc. I am a bit disappointed in the lack of in line
> assembler code. PICAXE brush it off as bad programming.
> > Do you know how to convert a 4 character ASCII decimal number
> into a 16 bit binary number in PICAXE BASIC?
> > I can do it in ASM by masking the high 4 bits, shifting left
> the lower four bits and anding the digits.
> > This is for the heading auto pilot that gets in heading info
> from the GPS in ASCII characters. 189.1 degrees for an example.
> Here is the ASCII binary codes. I need a binary number to control
> the aileron servo.
> > Dec      Binary         Hex    ASCII
> 48     00110000     30h     0
> 49     00110001     31h     1
> 50     00110010     32h     2
> 51     00110011     33h     3
> 52     00110100     34h     4
> 53     00110101     35h     5
> 54     00110110     36h     6
> 55     00110111     37h     7
> 56     00111000     38h     8
> 57     00111001     39h     9
> > BTW the PICAXE would make a great waste gate or boost controller for
> all those turbo guys out there. An intake air temp sensor as well
> as the MAP sensor could be used to back off on the boost when
> the intake  air temp. gets over 140 degrees F to prevent detonation.
> > Paul Lamar ...No rotor no motor.


> I can do it in ASM by masking the high 4 bits, shifting left
> the lower four bits and anding the digits.

Not quite so simple.  You also need to change from base 10 to base 2.
If you just shift and add, there will be holes in the binary sequence.
For example 8, 9, 10 with shift and add would be 0000 1000, 0000 1001,
0001 0000.  You need 0000 1000, 0000 1001, 0000 1010.  One method would
be to first mask off the high bits and put the least significant digit
into a register. Take the next digit and decrement it to zero.
On each decrement, add 1010 (10 decimal) to the register.  Next digit
decrement and add 0110 0100 (100 decimal) to the register. For the last
digit, decrement and add 0011 1110 1000 (1000) decimal.  When you get
done, the register will hold the binary equivalent of your heading to a
resolution of 0.1 deg.

I've written ascii to binary or hex routines in Basic, C, and
assembler, but it was 30-40 years ago. :)

Bob W.