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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/VV2MHEQQYS4T7VWCEVSHYWNXMRKEAVQK/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "CADq4U7+tCU5heB+7xhXFz8DiTe+JhF-O4KsHS_JFiyXe-fJAOg@mail.gmail.com",
    "message_id_hash": "VV2MHEQQYS4T7VWCEVSHYWNXMRKEAVQK",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/NA5FACHP36LUNZAAAOD2WTB2MJ4D2UXT/?format=api",
    "sender": {
        "address": "minyard (a) acm.org",
        "mailman_id": "59a713764a2e4ccabdcfd85f5b213a94",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/59a713764a2e4ccabdcfd85f5b213a94/emails/?format=api"
    },
    "sender_name": "Corey Minyard",
    "subject": "[pacsat-dev] Re: PACSAT Operating Instructions",
    "date": "2023-05-10T17:39:44Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/IF677HOZNYCQUU6VR3XKM6TY5YNCNTA3/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "On Tue, May 9, 2023 at 11:28 AM Corey Minyard <[email protected]> wrote:\n>\n> It could be the serial port, that makes some sense, I guess.\n>\n> I installed a jumper feeding 3.3v on J4 pin 1, and the MRAM still\n> works, but the 5043s still don't.\n>\n> I think I found it.  R10 and R11 are not populated.  One of them says\n> 330 ohms, one says zero.  What needs to be put here?  I think I have\n> some SM resistors, but probably 0603, and these look smaller.\n\nThat was it, adding bridges there fixed the issue.  I was able to\ntransmit packets from the launchpad and receive them on my rig.  I'm a\nlittle bit confused about what frequency to use to send packets to the\nboard.\n\nPacsat>get ax\nAX5043 dev 4 TX:\n FIFOSTAT: 21\n PWRMODE:: 09\n XTALCAP: 0\n PLLLOOP: 0a\n PLLCPI: 10\n PLLVCOI: 97\n PLLRANGINGA: 49\n PLLVCODIV: 24\n FREQ 436800000 Hz\n MODULATION: 7\n TXPWRCOEFFB0: 20\n TXPWRCOEFFB1: 0\n\nAX5043 dev 5 RX:\n FIFOSTAT: 21\n PWRMODE:: 0d\n XTALCAP: 0\n PLLLOOP: 0a\n PLLCPI: 10\n PLLVCOI: 97\n PLLRANGINGA: 49\n PLLVCODIV: 24\n FREQ 435750000 Hz\n MODULATION: 7\n TXPWRCOEFFB0: 20\n TXPWRCOEFFB1: 0\n\nRX and TX seem to be backwards here, because the board is transmitting\non 435750000.  And we have:\n\nStarting RX with SPIDevice 4, vhf=1 9600bps=1\nStarting TX with SPIDevice 5, vhf=0 9600bps=1\nIn start_rx, Setting freq to 436800000\nIn start_tx, Setting freq to 435750000\n\nBut:\n\nPacsat>raise rx freq 0\nRxFreq=145835000\n\nWhich is right?  Are both directions 9600 at the moment?\n\n-corey\n\n>\n> -corey\n>\n> > Ok, I got both mails.  One thing I notice is that there is some backflow of\n> > power from the serial line which lights the LED (dimly) even if the\n> > LaunchPad is unpowered.  Could that be the reason for the 2.7V?  I have\n> > those jumpers installed on both halves of the board, but I'm surprised the\n> > MRAM works at all if you don't have it installed (maybe that 2.7V is\n> > enough---and I don't see how that relates to the 5043).\n>\n> On Tue, May 9, 2023 at 9:41 AM Corey Minyard <[email protected]> wrote:\n> >\n> > I send this from my acm.org account and realised it's not going to get\n> > to the pacsat mailing list.  So here it is again.\n> >\n> > On Tue, May 9, 2023 at 9:39 AM Corey Minyard <[email protected]> wrote:\n> > >\n> > > On Tue, May 09, 2023 at 09:28:06AM -0400, Burns Fisher (AMSAT) wrote:\n> > > > Ok, glad the MRAM is working.  Any chance that you don't have the two\n> > > > jumpers on the LaunchPad required to power the 5043s?  These would be a\n> > > > pair on the right (components up, USB down, I think) just below the bottom\n> > > > set of pins.\n> > >\n> > > Yes, the two jumpers labeled +5V and +3V3 right by J1 are both installed.\n> > > I'm getting 3.3V on J1 pin 1 and 5V on J1 pin 2.\n> > >\n> > > There are unpopulated jumpers on the LaunchPad by J4 (J6 on the\n> > > Laumchpad) that have the same labels.  I'm getting 2.7V on J4 pin 1,\n> > > which is strange.  That's what powers the MRAMs and the temperature\n> > > sensor.\n> > >\n> > > Should I put a jumper on 3V3 by J4?  I'm getting 3.3V on the other side\n> > > of the jumper.  I'm wondering if the power is somehow coming through the\n> > > 5043s and getting to the MRAMs, but I don't see how that could happen.\n> > >\n> > > >\n> > > > BTW, I don't even try to push Jim's board all the way on.  It is tight as\n> > > > it is and I want to be able to get it back off (relatively) easily.    But\n> > > > regardess, the tops of the pins are all level, even though the newly\n> > > > soldered pins have a plastic holder at the bottom and the original pins do\n> > > > not.\n> > >\n> > > Yeah, strange.  I didn't notice until I tried to put the board on.  My\n> > > board now looks terrible, but it seems to be making good contact now.\n> > >\n> > > I looked at close-up pictures on TI's web site, and the pins I had look\n> > > the same as the ones in the picture.\n> > >\n> > > -corey\n> > >\n> > > >\n> > > > 73,\n> > > >\n> > > > Burns Fisher, WB1FJ\n> > > > *AMSAT(R) Engineering -- Flight Software*\n> > > >\n> > > >\n> > > > On Mon, May 8, 2023 at 11:52 PM Corey Minyard via pacsat-dev <\n> > > > [email protected]> wrote:\n> > > >\n> > > > > Burns sent me the info on that.  I ran J5 pin 12 to a via on the\n> > > > > bottom right of U1.  After doing that wiring change, all but one MRAM\n> > > > > appears to be working.  It looks like R5 got removed somehow, I may\n> > > > > have done that removing the wire.  I just installed a bridge there,\n> > > > > since it's a zero-ohm resistor, and the mram seems to be working now.\n> > > > >\n> > > > > The temperature sensor on the daughter board seems to be working.\n> > > > >\n> > > > > I don't think the 5043's are working.  I'm not getting anything on\n> > > > > transmit, and I eventually get:\n> > > > >\n> > > > > Pacsat>send pb status\n> > > > > ## SELF TEST: pb_test_status\n> > > > > TX QUEUE FULL: Could not add UI frame to Packet Queue\n> > > > > PB Empty.\n> > > > > ## PASSED SELF TEST: pb_test_status\n> > > > >\n> > > > > after running that a few times.  At startup, I'm getting:\n> > > > >\n> > > > > ERROR: In start_rx, axradio_init returned: 5\n> > > > > ERROR: In start_tx, axradio_init_70cm returned: 5Initializing PB Task\n> > > > > ERROR: Failed in init PB Status Timer\n> > > > >\n> > > > > -corey\n> > > > >\n> > > > > On Mon, May 8, 2023 at 9:51 PM Jim McCullers via pacsat-dev\n> > > > > <[email protected]> wrote:\n> > > > > >\n> > > > > > Chris,\n> > > > > >\n> > > > > > Please take a look at the email I sent out earlier.\n> > > > > > There is the possibility of a wiring error on the board with my white\n> > > > > wire correction.\n> > > > > >\n> > > > > > As for the connectors being longer, I never noticed that and these\n> > > > > should be the same connectors I sent Burns and Chris.\n> > > > > > Burns say the MRAM is working after the wiring change and the AX5043s\n> > > > > are working for Chris and Burns so not certain there.\n> > > > > >\n> > > > > > Attached is the revised schematic.  I'll have the Kicad files on github\n> > > > > hopefully tomorrow.  Have a couple of issues to deal with.\n> > > > > >\n> > > > > > Jim McCullers\n> > > > > > WA4CWI\n> > > > > >\n> > > > > >\n> > > > > >\n> > > > > > I sent this earlier, but just to Chris.\n> > > > > >\n> > > > > > I got my board today and soldered on the connectors.  Looking at the\n> > > > > board now, I see that the connectors that came with the launchpad are\n> > > > > around 1cm longer than the ones Jim supplied.  I can't get the mram or\n> > > > > ax5043s to be detected.  I don't think it's making good contact on the\n> > > > > connectors, for obvious reasons.  Do I need to trim the old connector, or\n> > > > > did I do something wrong?\n> > > > > >\n> > > > > > I clipped the pins, and still no help.  The power light by the serial\n> > > > > connector works, and the serial port works.  But the mrams and the ax5043's\n> > > > > are not there.\n> > > > > >\n> > > > > > I can't find the schematics in the git repository.  PacSatDocs, I\n> > > > > assume.  I guess I need to start debugging to figure out what is wrong.\n> > > > > >\n> > > > > > -corey\n> > > > > >\n> > > > > > -----------------------------------------------------------\n> > > > > >\n> > > > > > pacsat-dev mailing list -- [email protected]\n> > > > > > View archives of this mailing list at\n> > > > > https://mailman.amsat.org/hyperkitty/list/[email protected]\n> > > > > > To unsubscribe send an email to [email protected]\n> > > > > > Manage all of your AMSAT-NA mailing list preferences at\n> > > > > https://mailman.amsat.org\n> > > > >\n> > > > > -----------------------------------------------------------\n> > > > >\n> > > > > pacsat-dev mailing list -- [email protected]\n> > > > > View archives of this mailing list at\n> > > > > https://mailman.amsat.org/hyperkitty/list/[email protected]\n> > > > > To unsubscribe send an email to [email protected]\n> > > > > Manage all of your AMSAT-NA mailing list preferences at\n> > > > > https://mailman.amsat.org\n> > > > >\n",
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