Shop OBEX P1 Docs P2 Docs Learn Events
PPDB Propeller Serial Programing — Parallax Forums

PPDB Propeller Serial Programing

jhwattsjhwatts Posts: 35
edited 2013-02-09 21:49 in Propeller 1
I'm trying to program my propeller with the RS-232 port on my PPDB. I have a USB to RS-232 converter that I am running from my computer to the port. I have tied the TX jumper to pin 31 on the propeller and the RX to pin 30 on my propeller. How do I wire the remaining two connections?

Comments

  • JonnyMacJonnyMac Posts: 9,108
    edited 2013-02-09 08:23
    Are you doing this because you don't have a USB port?

    Here's a schematic with the required serial connections: http://www.parallax.com/Portals/0/Images/SerialToPropeller.jpg
  • jhwattsjhwatts Posts: 35
    edited 2013-02-09 08:47
    Yes I have no USB support at this time. I am wanting to use the serial port directly mounted to the PPDB. I have a USB to serial converter handy.I think most of the work is done for me but I not sure what CTS and RTS is. Is RTS the same as RES?

    http://www.parallax.com/Portals/0/Downloads/docs/prod/schem/PPDB_A_Schematic.pdf

    See page 7.
  • JonnyMacJonnyMac Posts: 9,108
    edited 2013-02-09 08:57
    I'm confused... you have USB to serial converter handy that you're going to plug into the PPDB? Why not plug into the USB port next to the Propeller's EEPROM? If that's busted, then use the schematic I pointed to above to create the interface. You'll need all of those transistors, resistors, and capacitors -- you can't simply connect directly.

    Do you have a Prop-Plug? You could connect those directly to the Propeller. The RST line is at the left end of the terminal strip.
  • jhwattsjhwatts Posts: 35
    edited 2013-02-09 09:06
    Its broke. I don't have a Prop-Plug
  • JonnyMacJonnyMac Posts: 9,108
    edited 2013-02-09 09:16
    You'll need a hand-full of parts, then, to build that circuit. Do not connect the output of the RS-232 connections directly to the Propeller.
  • StephenMooreStephenMoore Posts: 188
    edited 2013-02-09 21:49
    I think you can select the function for the RTS line in the Propeller Tool v3.2 (Edit->Preferences->Operation). You would then jumper from RTS on the MAX3232E to the RESn pin on the PPDB. I haven't tried it but it should work just fine. I assume 9600,n,8,1 port settings would suffice.
Sign In or Register to comment.