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Max232

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  • Jonathan HolleJonathan Holle Posts: 48
    edited 2010-07-25 20:36
    OK, and how can I know if the propeller work well and is not damaged ? I got these voltages :
    P0 to P27 : 0,03v
    P9 (vss) : 3v
    P31 : 0,06v
    P30 : 0,3v
    P29 : 3,4v
    P28 : 3,4v

    And when the max3222 is connected, P31 go to 3,5v
  • LeonLeon Posts: 7,620
    edited 2010-07-25 20:40
    If you are able to drive the output high and low, the Propeller must be working.

    How are you testing the RS-232 output from the MAX3222?

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Leon Heller
    Amateur radio callsign: G1HSM
  • Jonathan HolleJonathan Holle Posts: 48
    edited 2010-07-25 20:43
    just with a voltmeter
  • LeonLeon Posts: 7,620
    edited 2010-07-25 20:59
    How do you know it isn't working? Have you connected it to a PC running a terminal emulator?

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Leon Heller
    Amateur radio callsign: G1HSM
  • Jonathan HolleJonathan Holle Posts: 48
    edited 2010-07-25 21:00
    I just test it with the propeller tool and tried an identification of the prop
  • SapiehaSapieha Posts: 2,964
    edited 2010-07-25 21:05
    Hi Jonathan Holle.

    On Yours last SCH's I can't see any RESET system.
    And without that You can only communicate with Programs that use serial communication BUT not Identify Propeller else program it From Any Tool's.


    Regards

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Nothing is impossible, there are only different degrees of difficulty.
    For every stupid question there is at least one intelligent answer.
    Don't guess - ask instead.
    If you don't ask you won't know.
    If your gonna construct something, make it·as simple as·possible yet as versatile as posible.


    Sapieha
  • Jonathan HolleJonathan Holle Posts: 48
    edited 2010-07-25 21:14
    ah, ok ^^, and how can I test if the propeller work ? Which command have I to do in the terminal ? and how to connect the reset to the serial adapter ?

    Post Edited (Jonathan Holle) : 7/26/2010 5:42:14 AM GMT
  • Jonathan HolleJonathan Holle Posts: 48
    edited 2010-07-26 13:42
    UP
  • Dr_AculaDr_Acula Posts: 5,484
    edited 2010-07-26 14:18
    re "I just test it with the propeller tool and tried an identification of the prop"

    and....

    did it work?

    I think you are very close to getting this working, but there are so many little steps along the way and each one has to be perfect. For a quick test, can you program (or identify) a propeller through your max3222 circuit? That tests a lot of things - the max circuit, the Rx and Tx lines and the reset circuit. Any chance of a quick photo of what you have wired up so far?

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    www.smarthome.viviti.com/propeller
  • Jonathan HolleJonathan Holle Posts: 48
    edited 2010-07-26 19:55
    Damn it ! I finally did the serial to ttl with two 2N3904 and a 3906 ... and it does not work :'( I suspect the propeller to be dead, I can't see an other reason, do you know how I can test the propeller in order to see if it work ?
  • Jonathan HolleJonathan Holle Posts: 48
    edited 2010-07-26 20:46
    I will create a new topic cause this problem is out of this topic purpose, anyway, thanks everybody for your help [noparse];)[/noparse]
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