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Add german translation for serial console access
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--- | ||
nav-title: Serielle Konsole | ||
nav-pos: 3 | ||
--- | ||
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Die serielle Konsole des TXT kann mit einem USB-auf-TTL-Adapter angezeigt werden. | ||
Im Prinzip sollte jeder gängige Adpater funktionieren, wichtig ist nur, dass der | ||
Adapter mit einem Pegel von 3.3V arbeitet. | ||
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**Achrung:** vor der ersten Benutzung des Adapters unbedingt prüfen, dass zwischen GND <-> RX und | ||
GND <-> TX tatsächlich nur 3.3V anliegen. Ein Adpater mit 5V kann den TXT irreparable beschädigen! | ||
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Die EXT-Schnittstelle des Controllers ist wie folgt belegt: | ||
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``` | ||
RX | ||
| reserved | ||
| | I2C-Data | ||
| | | Extension | ||
| | | | GND | ||
| | | | | | ||
| +–––+ | | ||
+–––+ +–––+ | ||
| O O O O O | | ||
| O O O O O | | ||
+–––––––––––+ | ||
| | | | | | ||
| | | | Extension | ||
| | | Extension | ||
| | I2C-Clock | ||
| reserved | ||
TX | ||
``` | ||
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Beim Anschließen darauf achten, dass RX und TX gekreuzt verbunden werden: | ||
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* TX <-> RX | ||
* RX <-> TX | ||
* GND <-> GND | ||
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Die Konsole kann dann mit einem beliebigen Terminalprogramm geöffnet werden, z.B.: | ||
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`screen /dev/tty.SLAB_USBtoUART 115200` | ||
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Nach Einschalten des TXT sieht man die Meldungen des Bootloaders: | ||
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``` | ||
U-Boot SPL 2013.10 (Jul 04 2015 - 08:30:17) | ||
>>> I2C0 On | ||
Could not probe the EEPROM; something fundamentally wrong on the I2C bus. | ||
Could not get board ID. | ||
>>> setup_dplls vor do_setup_dpll | ||
>>> setup_dplls nach do_setup_dpll | ||
Could not probe the EEPROM; something fundamentally wrong on the I2C bus. | ||
Could not get board ID. | ||
>>> Setting MUX Start | ||
>>> Setting MUX End | ||
Could not probe the EEPROM; something fundamentally wrong on the I2C bus. | ||
Could not get board ID. | ||
>>>Start TXT-Mode - V2 | ||
LCD-Init_4: | ||
Could not probe the EEPROM; something fundamentally wrong on the I2C bus. | ||
Could not get board ID. | ||
---> MPU 600 VDD 46 | ||
U-Boot 2013.10 (Jul 04 2015 - 08:30:17) | ||
I2C: ready | ||
DRAM: 256 MiB | ||
NAND: 128 MiB | ||
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 | ||
Could not probe the EEPROM; something fundamentally wrong on the I2C bus. | ||
Could not get board ID. | ||
Net: usb_ether | ||
NAND read: device 0 offset 0x700000, size 0x40000 | ||
262144 bytes read: OK | ||
CopyToLcd | ||
LCD Command called | ||
Hit ENTER key to stop autoboot: 0 | ||
``` |