Michael Colton
d9c9939ab8
Update to bring github up to date with my files.
2014-10-28 00:36:55 -06:00
Michael Colton
46c832e409
Pretty big improvements to bitmap drawing code, and waterfall display code. Also a hack to deal with the red-things-stay-red bug (it's not ideal, it just blocks the encoder tick() if the display is drawing, doesn't seem to effect the feel of the interface in a bad way. Beginning to include GPS support. Working on some other display speedups (DMA and 16bit transfers, both are currently disabled)
2014-10-15 09:31:08 -06:00
Michael Colton
f694e53e46
Big improvements to audio! I was doing overlap-add wrong. There are still issues, but it's much better. Also, changing modes between LSB/USB/AM works now (though the menu doesn't show USB correctly, and the filter bar doesn't change). Improvements also effect transmitted audio.
2014-10-07 10:31:07 -06:00
Michael Colton
d04d7845cf
Initial transmit support. Internal microphone working. Capacitive touch sensors working. Currently touch TOUCH1 to transmit, waterfall changes color and shows the filtered output that should be transmitted (except that it's MUCH noisier than it looks, due, I think to DSP issues.)
2014-10-06 11:03:34 -06:00
Michael Colton
7f0b21569c
Just backing up. PSDR2 is receiving well, image rejection is good. Gain pot settings work. Audio out works (to earphones only, the speaker fails pretty badly, not sure why, but that's hardware anyway)
2014-10-01 10:48:27 -06:00
Michael Colton
817dcff56e
Enclosure 3D files, Assembly Diagrams and Assembly Guide. Also so work on getting the firmware compatible with the PSDR2 hardware. Probably some junk as well. Lots of files.
2014-09-28 20:40:01 -06:00
Michael Colton
3d31149c20
Looking at adding PJRC optimized display code to the PSDR. But his chip is rather different (no hardware FIFO) so I'll need to implement the changes with DMA I think, I'm sure it will work well, but it's going to be some work.... Update to block diagram. Also, finally getting to work on next rev of hardware!!
2014-08-23 14:08:17 -06:00
Michael Colton
03b0cfa0d4
Has the beginnings of an S-Meter. Audio seems worse than before that was added, so I want to check on that. Uploading the image files (even though the PSDR uses them in code form... still, might be handy)
2014-08-22 00:23:39 -06:00
Michael Colton
003beac9e3
Added basic volume control (not sure why I didn't do that a long time ago!) also a HackADayPrize logo, can't hurt, right? A few other small things.
2014-08-02 01:26:47 -06:00
Michael Colton
4d89e8ab01
Further improvements to the menu system. Now, rather than a red underline, the item itself turns red. Logic for updating runtime settings and updating the display is improved. Main() is streamlined. Looks rather nice, if I do say so myself.
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Does seem a little slow sometimes. Not sure why it would be (not more than it was before, anyway) Also, if you move through menu items too fast, some of them stay highlighted incorrectly.
2014-07-26 23:20:58 -06:00
Michael Colton
7b8b1ac023
Starting to (slowly) make changes to the schematic for the next hardware version.
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Making/made a lot of changes to the graphics and some to the menu system. Want to do a commit before I change too much more, incase I screw things up, you see. Graphics look much better!
2014-07-26 19:07:45 -06:00
Michael Colton
a9f466d396
Added some color bitmaps and some code to draw them (way prettier graphics, here we come!), fixed a minor bug in the mode selection menu.
2014-07-23 09:31:17 -06:00
Michael Colton
6a7b46d523
Huge improvement in display. It was basically a bug that made it so hard to read. Playing with an IF shift feature, and filtering and stuff. I think the overlap-discard is not quite right yet....
2014-07-22 22:55:50 -06:00
Michael Colton
9d045be4ce
Starting to implement overlap-discard in the DSP code. I think maybe I've gotten it working, with a pretty large improvement in audio, but reception was so bad I had a hard time finding things to listen to to test it with. Also added the ability to switch mode (LSB & AM).
2014-07-21 08:50:38 -06:00
Michael Colton
50fbaf3920
The beginnings of AM demodulation. I think it works, but it doesn't sound good at all (then again, SSB leaves something to be desired as well.) Graphical display of filter (nice!) Doesn't crash if you set the FFT size to 1024.
2014-07-15 00:15:39 -06:00
Michael Colton
31de146601
The main thing here is moving the FFT/Filtering/IFFT to a timer interrupt that has a lower priority than the audio capture/playback timer interrupt. This way I don't care how slow the display code runs in the main loop (for now) enabling me to have the audio processing and the display working at the same time.
2014-07-14 01:41:46 -06:00
Michael Colton
71b87a38d7
Added a crude Automatic Gain Control (AGC) that's happening on the audio output side. I want to add one for the RF side as well, but I'll need to change the hardware to do it.
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Also fixed some weirdness with the filter menu items.
Verified that the recent changes to applyCoefficients() function are good and necessary to the proper operation of the filter.
2014-07-08 09:56:47 -06:00
Michael Colton
28ebb2009f
Menu system is improved. Arbitrary filter control is working pretty well. You can set the upper and lower bounds of the filter and that's pretty neat! Strange to say, but this radio now beats my Yaesu FT-817 for filter performance (by a whole lot).
2014-07-06 23:41:57 -06:00
Michael Colton
7b1da77c21
Haven't committed in a while :o . Currently waterfall is disabled while I work on audio processing. I am capturing, FFT, filter, IFFT, and output. It seems to be working partly. I don't think I am doing things right yet.
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Also, starting to implement the menu system. Oh, and fixed some indentation, so it looks like there was more changed to main() than there really was....
2014-07-06 21:20:00 -06:00
Michael Colton
8c308e12c0
Got a timer up and going, and it's firing interrupts! Next up is to change the audio capture to use the interrupt and some buffers. Basically separate the display loop stuff.
2014-06-23 00:00:31 -06:00
Michael Colton
ffcb904b66
Initial commit to GitHub.
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Includes the Source (as an Eclipse project) and the Hardware files (including schematic, layout, gerbers, and bill of materials.)
The firmware is extremely incomplete. At this point the DDS chips work (with controlled phase relationship), the LCD (with fast-ish SPI, scrolling, and GFX, modified from Adafruit's library), the encoder knob, and LED work.
The ADC is capturing, but not in a usable way, but it's enough to feed the DSP code and see a nice pretty waterfall. Timers, interrupts, and DACs are not working yet.
2014-06-22 17:49:43 -06:00
