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| 11:11.21 | *** join/#arm-netbook Necrosporus (~Necrospor@unaffiliated/necrosporus) |
| 11:11.49 | Necrosporus | hello. I have an ARM device. I have identified pins which could be UART but I cannot determina data rate |
| 11:12.04 | Necrosporus | 115200 doesn't work, 9600 does not work |
| 11:29.19 | jn__ | Necrosporus: try some more speeds. i've seen 57600 baud once. (more speeds are listed in termios(3), at least in the linux manpage) |
| 11:29.44 | jn__ | a digital oscilloscope or a logic analyzer may also be useful |
| 11:35.14 | Necrosporus | jn__, thanks. However it turns out that the connector was not UART |
| 11:35.35 | Necrosporus | What it was I do not know but it sends some garbage out when device is turned on just like uart would |
| 11:35.56 | Necrosporus | Other connector is UART however and it sort of works |
| 11:38.08 | jn__ | ah! |
| 11:38.16 | jn__ | how does it sort of work? |
| 13:30.47 | Necrosporus | jn__, works fine but does not output login: stuff |
| 13:31.04 | Necrosporus | or maybe I'm not waiting long enough |
| 13:31.17 | Necrosporus | the device has android |
| 13:31.28 | Necrosporus | It is a TVbox |
| 13:45.08 | jn__ | maybe it scrolled by already |
| 13:45.16 | jn__ | pressing enter doesn't help? |
| 13:45.34 | jn__ | or maybe it just doesn't spawn a shell or getty on the serial port |
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| 13:59.32 | Necrosporus | It's more likely |
| 14:00.52 | Necrosporus | It has two consoles however |
| 14:01.10 | Necrosporus | Firmware start at: 0x00023c59 |
| 14:01.10 | Necrosporus | Enter Debugrom mode at /hdd2/home/luoj/android/work/uboot/uboot_mc_ddr_480/board/amlogic/stv_mbx_mc/firmware/lowlevel_init.c:0x000000cd |
| 14:01.10 | Necrosporus | r c1107d54 |
| 14:01.10 | Necrosporus | OK:Read c1107d54=000003bd |
| 14:01.10 | Necrosporus | > |
| 14:01.40 | Necrosporus | jn__, do you have any ideas what sort of console it is and what commands it accepts after > ? |
| 14:02.09 | Necrosporus | Another console is available by hitting anykey a little later |
| 14:02.12 | Necrosporus | <PROTECTED> |
| 14:02.12 | Necrosporus | Hit any key to stop autoboot: 0 |
| 14:02.12 | Necrosporus | MCBOX # |
| 14:02.31 | Necrosporus | this one seems to be regular uboot console |
| 14:02.55 | jn__ | which comes first? |
| 14:03.57 | Necrosporus | > comes on very early boot if you hit key immediately after plugging power |
| 14:04.16 | Necrosporus | # comes if you let it boot for a couple of seconds and hit any key then |
| 14:04.26 | jn__ | "Debugrom mode" and the path after it make it sound like this is some version of uboot that's in a ROM in the SoC |
| 14:04.44 | Necrosporus | Probably |
| 14:04.44 | jn__ | Necrosporus: ok, that makes sense |
| 14:05.09 | jn__ | do you see any output from linux or userspace? |
| 14:05.26 | Necrosporus | So you think there are three on-board ROMs, one in SoC, one in NOR flash and one in NAND? |
| 14:05.31 | Necrosporus | Yes |
| 14:06.33 | jn__ | i haven't seen the board, so i don't know about SPI/NOR flash and NAND flash, but that sounds like a common setup |
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