odroid UART0 ...

어우.. 뜬금없는 해결책 ㅠㅠ

다행히도.. 8핀 커넥터 쪽에 UART0이 빠져있어서 이걸로 해결?

그래도 UART1을 살리고 싶긴한데 흑.. 영 안되네..

왜 RX는 되는데 TX가 안될까?

일단 선 배선은

앞에서 보는 기준으로

J4 - TX(2) / RX(3)

UART- TX(2) / RX(3)

적당히 꼬아주면 된다.

그나저나.. 시간 겁나 짧게 해놨네.. ㄷㄷㄷ 가뜩이나 어댑터 전원 꼽기 힘든데

1초 해둔거 같다???

OK U-Boot 2010.12-svn (May 12 2014 - 15:05:46) for Exynox4412 CPU: S5PC220 [Samsung SOC on SMP Platform Base on ARM CortexA9] APLL = 1000MHz, MPLL = 880MHz DRAM:  2 GiB PMIC VERSION : 0x00, CHIP REV : 2 TrustZone Enabled BSP BL1 version: 20121128 Checking Boot Mode ... EMMC4.41 REVISION: 2.0 Manufacture ID 0x11 [ 7456MB ] NAME: S5P_MSHC4 MMC Device 0: 7456 MB ÿMMC Device 1: 15193 MB MMC Device 2 not found *** Warning - using default environment USB3503 NINT = OUTPUT LOW! ModeKey Check... run normal_boot No ethernet found. Hit any key to stop autoboot:  0 Exynos4412 #

Exynos4412 # ? ?       - alias for 'help' base    - print or set address offset bdinfo  - print Board Info structure boot    - boot default, i.e., run 'bootcmd' bootd   - boot default, i.e., run 'bootcmd' bootelf - Boot from an ELF image in memory bootm   - boot application image from memory bootp   - boot image via network using BOOTP/TFTP protocol bootvx  - Boot vxWorks from an ELF image cfgload - cfgload - boot.ini textfile load from FAT32 check_64gb- check_64gb  - mmc total size check for sd/mmc. check_mmc_size- check_mmc_size  - mmc size check for sd/mmc. check_value- check_value        - value check. chpart  - change active partition cmp     - memory compare coninfo - print console devices and information cp      - memory copy crc32   - checksum calculation dcache  - enable or disable data cache dnw     - dnw     - initialize USB device and ready to receive for Windows serv) echo    - echo args to console editenv - edit environment variable emmc    - Open/Close eMMC boot Partition env     - environment handling commands exit    - exit script ext4load- load binary file from a Ext4 filesystem ext4ls  - list files in a directory (default /) false   - do nothing, unsuccessfully fastboot- fastboot- use USB Fastboot protocol fatformat- fatformat - disk format by FAT32 fatinfo - print information about filesystem fatload - load binary file from a dos filesystem fatls   - list files in a directory (default /) fdisk   - fdisk - fdisk for sd/mmc. fdt     - flattened device tree utility commands get_mmc_block_count- check_mmc_block_count       - get mmc total block count fo. go      - start application at address 'addr' help    - print command description/usage icache  - enable or disable instruction cache iminfo  - print header information for application image imxtract- extract a part of a multi-image itest   - return true/false on integer compare load    - load binary file from a filesystem loadb   - load binary file over serial line (kermit mode) loads   - load S-Record file over serial line loady   - load binary file over serial line (ymodem mode) loop    - infinite loop on address range ls      - list files in a directory (default /) md      - memory display mm      - memory modify (auto-incrementing address) mmc     - MMC sub system mmcinfo - mmcinfo <dev num>-- display MMC info movi    - movi  - sd/mmc r/w sub system for SMDK board mtdparts- define flash/nand partitions mtest   - simple RAM read/write test mw      - memory write (fill) nfs     - boot image via network using NFS protocol nm      - memory modify (constant address) ping    - send ICMP ECHO_REQUEST to network host printenv- print environment variables reginfo - print register information reset   - Perform RESET of the CPU run     - run commands in an environment variable saveenv - save environment variables to persistent storage setenv  - set environment variables setexpr - set environment variable as the result of eval expression showvar - print local hushshell variables sleep   - delay execution for some time source  - run script from memory system_update- system update - system update by FAT32 or EXT4 test    - minimal test like /bin/sh tftpboot- boot image via network using TFTP protocol true    - do nothing, successfully usb     - USB sub-system usbboot - boot from USB device version - print monitor version wait_usb_trigger- wait_usb_trigger - wait usb trigger detect for recovery wipeenv - Wipe uboot env.

Exynos4412 # emmc open 0 eMMC OPEN Success.!!                         !!!Notice!!! !You must close eMMC boot Partition after all image writing! !eMMC boot partition has continuity at image writing time.! !So, Do not close boot partition, Before, all images is written.! Exynos4412 # emmc close 0 eMMC CLOSE Success.!!

boot.txt가 아니라 boot.ini로 하면 더 편하려나?

Exynos4412 # boot do_fat_cfgload : cmd = fatload mmc 0:1 0x41000000 boot.ini reading boot.ini ** Unable to read file boot.ini ** NAME: S5P_MSHC4 NAME: S5P_MSHC4 >>> Load Boot Script from mmc 0:1 <<< reading boot.scr Warning : Reads a file that is smaller than the cluster size. 355 bytes read in 33 ms (9.8 KiB/s) ## Executing script at 40008000 reading zImage 2355768 bytes read in 57 ms (39.4 MiB/s) reading uInitrd 2190770 bytes read in 31 ms (67.4 MiB/s) Boot with zImage ## Loading init Ramdisk from Legacy Image at 42000000 ...    Image Name:   uInitrd 3.8.13.30    Image Type:   ARM Linux RAMDisk Image (uncompressed)    Data Size:    2190706 Bytes = 2.1 MiB    Load Address: 00000000    Entry Point:  00000000 Starting kernel ... Uncompressing Linux... done, booting the kernel.

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2016.10.17

[링크 : http://odroid.com/dokuwiki/doku.php?id=en:u3_ioport_uart]