Electronics For All (EFA)

140 Members
About EFA Community: For People around the world, who are interested in Embedded SW/HW, Electronics, Industrial Automation, Robotics, OSH, OSS, Beacons, 3D Fab,Professional N/W'ing, knowledge sharing & discussions on these technologies & engineering.33 Servers

Load older messages

21 Jan 2021
@onirib:matrix.org@onirib:matrix.org left the room.22:27:17
@mehmet:grusbv.comMehmet Ali
In reply to @danielp3344:matrix.org
seems like a UART to me, but 115200 8N1 gives nothing
If garbage, I would just try frequencies or use a scope to find the frequency.
22 Jan 2021
@bwivell:matrix.orgBilly Wivell joined the room.00:45:45
@bwivell:matrix.orgBilly Wivell changed their display name from bwivell to Billy Wivell.01:05:54
@danielp3344:matrix.orgDaniel Peterson Mehmet Ali: unfortunately I don't have access to a scope, but I will try finding the frequency 01:14:36
@danielp3344:matrix.orgDaniel PetersonIf I could get the heat sink off this CPU maybe I could find a datasheet but it's stuck tight01:15:10
@danielp3344:matrix.orgDaniel Petersonman.....01:29:01
@danielp3344:matrix.orgDaniel Petersonwell I solved the problem01:29:06
@danielp3344:matrix.orgDaniel PetersonScreenshot from 2021-01-21 20-30-24.png
Download Screenshot from 2021-01-21 20-30-24.png
@danielp3344:matrix.orgDaniel Petersonconnector I was talking about on the right doesn't work01:30:56
@danielp3344:matrix.orgDaniel Petersonthe real one is the three pads on the left there01:31:07
@danielp3344:matrix.orgDaniel Peterson😐️01:31:55
@danielp3344:matrix.orgDaniel Petersonat least I can start working now01:32:03
@danielp3344:matrix.orgDaniel Petersonnow I want to know what the other one is01:37:27
23 Jan 2021
@csharpron:marrero.xyzCSharpRon joined the room.00:11:42
@ckt_luv_1142:matrix.orgCkt_luv joined the room.09:07:06
@danielp3344:matrix.orgDaniel PetersonDay 3: the attack continues....19:46:05
@danielp3344:matrix.orgDaniel Peterson apparently this chip (hisilicon hi3520) has 5 uarts 19:46:18
@danielp3344:matrix.orgDaniel Petersonthis is the only one I can find though19:46:27
@danielp3344:matrix.orgDaniel Petersonuboot uses it, but linux does not19:46:31
@danielp3344:matrix.orgDaniel Petersontrying to get mainline to run now since I can't get any signs of life from the kernel it comes with19:46:57
@mehmet:grusbv.comMehmet AliI haven't encountered a case where uboot used one uart but when linux was initialized it switched 19:55:41
@mehmet:grusbv.comMehmet Aliis it possible that linux is not booting at all?19:55:56
@danielp3344:matrix.orgDaniel Petersonthe device definitely boots21:14:56
@danielp3344:matrix.orgDaniel Petersonwell, the linux derived OS on there boots21:15:12
@danielp3344:matrix.orgDaniel Petersonthey might have serial disabled or something21:15:18
@danielp3344:matrix.orgDaniel PetersonI haven't gotten any positive signs of life from any kernel I tried21:15:31
25 Jan 2021
@wuglu:matrix.orgwuglu joined the room.06:45:58
@csharpron:marrero.xyzCSharpRon changed their display name from csharpron to CSharpRon.14:51:40
26 Jan 2021
@mehmet:grusbv.comMehmet Ali Daniel Peterson: any updates? 16:45:57

There are no newer messages yet.

Back to Room List