开云体育

I guess one could use a pico (RP2040) to drive the display via the parallel interface, and talk to the Teensy via SPI.? If much of the actual graphical processing is done on the pico, then the I2C

Please send me your address for shipping the display driver board… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC

Good work Oliver. I’ll try to duplicate this test tomorrow dave

I found that the 25 MHz and 30 MHz bands oscillate, but the lower bands don't, matching what others have found. To figure out why I measured the insertion loss from the output of the PA to the input

Good Morning Oliver, Another issue that might be related is in the operation of the Audio Band Width Control. When my radio is first turned on the bandwidth control works as it is supposed to. Select

Hold the press! I was not checking the high bands. I see the oscillation on the 10m band. Back to investigating...

Hmm. I have now restored my radio to the point where it's working (mostly; sometimes display freezes get me) and I don't see the oscillation when transmitting in SSB mode. I am running commit

Compiling now. I did find the calls in setupSWR() that would have messed with the BPF and comment them out. Just tried it. It oscillates :(. - Jerry

Interesting… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton - J68HZ

Jerry, please try the latest commit I just pushed to GitHub. I removed a call to setupSWR() that I am concerned might have messed with the registers: https://github.com/KI3P/SDTVer066-9

I think this is the commit of a version that has no oscillation if you want to do some git diff'ing: 22385bc73b1046f1b095800e5b5009398fb4d57f My screen freezes seem to be happening less often for some

*** That's mostly a hardware thing. When you read the register, do you get what you wrote or the current non-driven state of the pins? - Jerry, KF6VB

Ni idea... I didn't write a line of that code... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner

*** Couldn't find that string anywhere in the code. Are these port expanders structured so you can read what you wrote? - Jerry, KF6VB

No Bad assumption, there is also a "SETBIT" function... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois

Looking at Ver66-09, I have changed the calls to setBPFPath() so they are the same regardless of CW/SSB mode. No difference, still oscillates :(. Of course, it's still possible for code somewhere else

No problem… Jerry just confirmed it’s a software bug that got in between version 50.0 and 66.9. I’ll let the software gurus figger out where the bug is. There are plenty of ya here in the forum

I just downgraded to V50.0. No oscillation. So it is a software problem. "Ver 063-1-beta" - oscillates. "Ver 066-7-SWR" from 3/5/2025 - oscillates "Ver 065" from 2/20/2025 - oscillates "Ver053" - does

Thanks Bill -- I'll build it from the parts.

I can't help because my system's been down for over a month and I haven't been able to do anything with the software. Jack, W8TEE