#rockbox 2021-06-14

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#rockbox log for 2021-06-14

01:00
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08:00
08:48:18	rb-bluebot	Build Server message: New build round started. Revision 02c4ec294c, 297 builds, 9 clients.
08:58:41	rb-bluebot	Build Server message: Build round completed after 624 seconds.
08:58:44	rb-bluebot	Build Server message: Revision 02c4ec294c result: All green
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12:00
12:04:44	desowin	Sansa Connect RTC is pretty weird. The AVR has monotime which is simply a 32-bit counter incremented every second, the problem is that there's no way to change this value
12:05:13	desowin	so OF creates a timestamp file in which it saves the counter value and corresponding real world time
12:05:32	desowin	then based on this file and current monotime, it calculates what is the real time
12:06:22	desowin	so in Rockbox I would just create a file with unix time offset which I would just add to the monotime value - and setting RTC would be adjusting this value
12:07:12	desowin	that's ugly but probably the only possibility (unless someone is brave enough to find out how AVR firmware works and implement alternative one...)
12:14:34	desowin	that's pretty bad, especially that there is ST RTC on the pcb, only I couldn't find any trace that would connect to it
12:15:05	desowin	either my desolder all chips pcb broke some traces due to mishandling or it is simply not connected
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13:00
13:29:17	speachy	blind via maybe?
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13:36:15	SammysHP	That reminds me of old HP calculators that are turned on periodically by an alarm to handle the clock timer overflow
13:36:38	desowin	blind via shouldn't matter, as I just check if the SDA/SCL is connected to any processor pads
13:37:01	desowin	as long as there is continuity it doesn't matter if it goes through blind vias or not
13:37:11	desowin	this is how I found the JTAG and serial port
13:38:15	*	speachy nods.
13:40:35	desowin	there's plenty of BGA in there, so I only can trace if there's low impedance on the path
13:40:55	desowin	if there's some current limiting resistor on the path, well, that's making things harder
13:41:13	desowin	there's always the sanding method, but I am not that interested anymore ;-)
15:00
15:07:00	speachy	anything else on i2c? (audio codec?)
15:11:24		Join fmlatghor [0] (~lcoogan@2601:5cd:8100:2890:9220:3aff:fe1a:350d)
15:11:39	braewoods	desowin: so what else is your port missing?
15:12:01	braewoods	this'll technically be the first RB hardware with wifi but it's useless to us due to how old it is
15:12:14	braewoods	even if we could get the chip working
15:12:19	braewoods	best to just send it to sleep
15:12:32	braewoods	plus no TCP/IP stack
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15:35:50	desowin	installer, RTC, SDIO to load firmware to wifi chip
15:37:03	desowin	with the USB driver, charging started working correctly (not a suprise as the code is quite clear about it ;-) )
15:37:36	desowin	https://gerrit.rockbox.org/r/c/rockbox/+/3480 with this it no longer feels slow to load audio files
15:37:47	desowin	the speed from clicking on a file to playback is like on e280
15:40:17	desowin	speachy: audio codec and power management on the internal i2c, there's also i2c available at the dock
15:41:00	desowin	it's interesting how much OF has code for dock that is not used at all, I doubt the dock was ever released
15:41:32	desowin	the ST chip seems to be used only to generate clock
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15:47:47	rb-bluebot	Build Server message: New build round started. Revision 2d6ddd0c5b, 297 builds, 9 clients.
15:50:42	braewoods	desowin: do you have to load firmware to the wifi chip to make it go into power saving mode?
15:57:09	rb-bluebot	Build Server message: Build round completed after 561 seconds.
15:57:11	rb-bluebot	Build Server message: Revision 2d6ddd0c5b result: All green
16:00
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17:00
17:00:36	amachronic	speachy: the M3K bootloader now supports dual-boot :) Link to new version...
17:00:40	amachronic	https://drive.google.com/drive/folders/1F4OhAVqKPcp879CykFCN5WL9ncYfPrvm
17:03:00	amachronic	Lemme know when you've got it uploaded. Thanks.
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18:00
18:00:57	speachy	amachronic: uploaded.
18:01:48	amachronic	cool, thanks.
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19:00
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19:57:23	braewoods	desowin: when you said you wanted a text interface to the serial driver, did you mean something that supported dumb things like cat? or something else?
19:57:55	braewoods	i was reviewing ASCII again and realized it could be used to allow mixing binary and textprotocols
19:58:03	braewoods	if you repurpose the normally unused control codes
20:00
20:01:47	speachy	KISS.
20:03:32	braewoods	speachy: it would be simpler to use binary :D
20:03:45	braewoods	easier to parse than text
20:04:07	braewoods	though binary requires more effort to design
20:23:32	speachy	but it's not terribly useful for human interaction, ie its main purpose.
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23:00
23:20:01		Join braewoods [0] (~braewoods@braewoods.net)
23:20:27	braewoods	speachy: guess what? freenode just committed suicide
23:21:12	mendel_munkis	braewoods: -offtopic?
23:21:24	braewoods	that's all i was going to say.
23:21:30	mendel_munkis	ah nvm
23:21:44	mendel_munkis	oh and woops it -community not -offtopic
23:21:47	braewoods	but it looks like the decision to move was for the best
23:21:58	braewoods	they just wiped out 20 years of old data
23:22:27	mendel_munkis	isfreenodedeadyet.com says well according to freenode freenode is dead
23:22:36	braewoods	yea
23:22:41	braewoods	that happened a few hours ago
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