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Re: Potential macro gotchas in SDT.h
#programming
Ian: I wasn't too worried about the macro expansion as I knew it would be additive at most. There is a github page, but it's private to the Beta only right now until the final version of the software is released. Jack, W8TEE
On Saturday, September 23, 2023 at 04:54:15 PM EDT, ian007 via groups.io <ian007@...> wrote:
Jack (W8TEE): Taking a gander at the source code, I noticed several potential macro gotchas in SDT.h (SDTVer049.1).? For example: #define INCREMENT_X? ? ? ? ? ?WATERFALL_RIGHT_X + 25
should be #define INCREMENT_X? ? ? ? ? ?(WATERFALL_RIGHT_X + 25)
Without parentheses around the sum, if someone tries multiplying or dividing, by anything other than unity, an erroneous result will ensue (divide by zero notwithstanding).? Attached is a diff file with the corrections to the other macros, which are not that many.? Hopefully, these changes won't break anything ;) Also, is there a better way to submit changes, like a github project page, to make submitting and merging changes easier? Cheers, Ian -- Jack, W8TEE |
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Potential macro gotchas in SDT.h
#programming
Jack (W8TEE):
Taking a gander at the source code, I noticed several potential macro gotchas in SDT.h (SDTVer049.1).? For example: #define INCREMENT_X? ? ? ? ? ?WATERFALL_RIGHT_X + 25
should be #define INCREMENT_X? ? ? ? ? ?(WATERFALL_RIGHT_X + 25)
Without parentheses around the sum, if someone tries multiplying or dividing, by anything other than unity, an erroneous result will ensue (divide by zero notwithstanding).? Attached is a diff file with the corrections to the other macros, which are not that many.? Hopefully, these changes won't break anything ;) Also, is there a better way to submit changes, like a github project page, to make submitting and merging changes easier? Cheers, Ian |
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Re: 4SQRP T41 update
Tom: That video is really old. I'm not sure it uses the ALP decoder. Try the new one again: I reposted it after Jim Pruitt rotated it for easier viewing. Jack, W8TEE
On Saturday, September 23, 2023 at 12:19:21 PM EDT, W0RCG <tg_email@...> wrote:
I could not locate Jack's video on Vimeo, but I did find this one: Tom - W0RCG -- Jack, W8TEE |
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Re: #t41-ep RTTY Contest
#t41-ep
Out of interest the radio is using my latest front panel. It uses a RPi Pico to interface the encoders and their switches, the touch screen and the 2 LEDs. The 18 switches are connected to the keypad interface on the display board. The equivalent of the V12 main board is integrated on the front panel behind the display although currently the audio boards are still plugin boards. The next version will have the audio boards replaced to match the real V12 boards. The Teensy communicates with the Pico over I2C. There are no cables connecting the switches, encoders, display and audio, PTT, Key and microphone. The front panel is 300x130mm. They cost me about $10 each in a batch of 5 including shipping using . -- John G0ORX? On Sat, 23 Sept 2023, 11:20 John Melton via , <john.d.melton=[email protected]> wrote: Amazing how active the bands are when there is a contest!? CQ Worldwide DX Contest, RTTY. |
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Re: #t41-ep RTTY Contest
#t41-ep
I probably have two dozen keys and one of my favorites is the micro switch Hans had on the early QCX's. Go figure... Jack, W8TEE
On Saturday, September 23, 2023 at 09:20:32 AM EDT, John Melton via groups.io <john.d.melton@...> wrote:
A friend bought the key in a charity shop and gave it to me. It had not been used so was in perfect condition. Had to get used to it after using a paddle for some years. -- John G0ORX? On Sat, 23 Sept 2023, 13:47 jjpurdum via , <jjpurdum=[email protected]> wrote:
--
Jack, W8TEE |
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Re: #t41-ep RTTY Contest
#t41-ep
A friend bought the key in a charity shop and gave it to me. It had not been used so was in perfect condition. Had to get used to it after using a paddle for some years. -- John G0ORX? On Sat, 23 Sept 2023, 13:47 jjpurdum via , <jjpurdum=[email protected]> wrote:
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Re: #t41-ep RTTY Contest
#t41-ep
Looks nice! I love that straight key! Jack, W8TEE
On Saturday, September 23, 2023 at 06:20:31 AM EDT, John Melton via groups.io <john.d.melton@...> wrote:
Amazing how active the bands are when there is a contest!? CQ Worldwide DX Contest, RTTY. -- John G0ORX -- Jack, W8TEE |
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#t41-ep RTTY Contest
#t41-ep
Amazing how active the bands are when there is a contest!? CQ Worldwide DX Contest, RTTY.
-- John G0ORX |
¿ªÔÆÌåÓýGreat¡ is it accurate? ? ? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ ? Owner - Operator Big Signal Ranch ¨C K9ZC Staunton, Illinois ? Owner ¨C Operator Villa Grand Piton ¨C J68HZ Soufriere, St. Lucia W.I. Rent it: ? Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. ? email:? bill@... ? ? From: [email protected] <[email protected]> On Behalf Of Paul, KI7LW
Sent: Thursday, September 21, 2023 11:16 PM To: [email protected] Subject: Re: [SoftwareControlledHamRadio] DCF77 Time Signal #display #t41 #t41-ep ? Joerg & Jack, |
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Re: Alternative to Teensy 4
It was not an Ethernet chip that was removed; it was the Cortex-M0+ (IMXRT1062), which is used to flash the Cortex-M7 (MIMXRT1062DVJ6B).? My mistake.? I have not used a Teensy for years, but it¡¯s coming back to me ;)
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If one removes the Cortex-M0+ (IMXRT1062), the only thing that ¡°breaks¡± is using the Teensy flash application, which is separate from the Arduino IDE, at least on my development platform.? The Arduino IDE will continue to function normally and produce a file that can be used to flash the Cortex-M7 (MIMXRT1062DVJ6B).
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If one¡¯s skills are up to (successfully) using a JTAG device, one can use the JTAG device to flash the Cortex-M7 (MIMXRT1062DVJ6B) with the file produced by the Arduino IDE.? So, there is no (good) reason to dump the Arduino IDE because some of us want to use JTAG, and anything else, in my humble opinion, would be throwing the baby out with the bathwater.? Further, continuing to use the Arduino IDE will make it easier for folks (new to microcontrollers) to begin to use and experiment with this project.
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What would be really nice:? if someone(s) would write some JTAG (or some other debug) firmware for the onboard Cortex-M0+ (IMXRT1062).? STM and TI, to name two, have this type of functionality on their evaluation boards.? Well, it¡¯s good to have a dream, I guess ;)
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Anyway, that¡¯s my $0.02.? Your mileage may vary.
?
Ian |
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Re: 4SQRP T41 update
I was unable to see a way to correct the video. To adjust your view, tilt your head to the right. (Sorry...couldn't resist...  )Jack, W8TEE
On Thursday, September 21, 2023 at 09:37:49 AM EDT, Dan Quigg via groups.io <twowindsbear@...> wrote:
Can you 'edit' the video so it is horizontal rather than vertical?? Or tell me how to adjust my view of the vid? Thanks & 73 -- Jack, W8TEE |
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Re: Programmable BenchPowerSupply
Hi John: I'm not sure why the touch display doesn't work, as there are thousands of the book sold and this is the first time we're had anyone say the touch screen didn't work. My guess is that the ILI9844 library is not being read. The line #include <ILI9488.h> ? ? ? ? ? ? ? ?// https://github.com/jaretburkett/ILI9488 gives you the URL for the proper download. debug2 is used to initialize the EEPROM. It needs the EEPROM to start properly. When the book was written, PB0 was defined in the core for the TeensyDuino software patch. Changes in the parsing done by the latest IDE enforces some C++ rules that were not enforced before and in the Teensy software patch has changed. I'm finishing up the T41 project right now, and it should be done in about a month. Remind me to look into this further after that and list any remaining problems at that time. The touch not working has to be a library problem, so check that out first. Jack, W8TEE On Thursday, September 21, 2023 at 04:03:52 AM EDT, John <on4ckf@...> wrote:
Jack Me and my friends built the Programmable BenchPowerSupply , but we encountered many problems. 1 The touch display does not work. 2 The adjustment of the power supply does not correspond to the book. 3 if debug2 is not used the power supply will not start. 4 Ports are defined multiple times in the program (PB0). Is the" BenchPowerSupply004_Final_5-27-20 " the latest firmware. The book mentions a manual, but I can't find it. John on4ckf -- Jack, W8TEE |
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