Subject: PIC vs. PICAXE
From: Rotary Engine
Date: 3/2/2007, 12:25 PM
To: AARotary Engine





    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.

How does the serial interface work on this chip?  Did you post a link to
a description of the system (I probably wasn't paying attention)?


Matt-

It works like a UART I think Matt. 8 data no parity one stop bit.
-- 
Paul Lamar ...No rotor no motor.

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