Hello Robert: What you said is normal connection like using USB to TTL cable connecting to J1 Header.
> >Plug in a usb serial adapter into the j1 debug port.. did u-boot >actually do what you expected? > It is working properly. Normally, when the board is completely up and Linux Login prompt is only showing in the USB0 port of the board. But, I am trying to achieve the same on USB0 port on the board, i.e., I wan to see the Uboot debug information on USB0 port. the following is the uboot log information coming on the UART0 port (J1 Connector) *U-Boot SPL 2011.09-00002-gd0e52e5 (Apr 14 2012 - 22:13:07) Texas Instruments Revision detection unimplemented No AC power, disabling frequency switch OMAP SD/MMC: 0 reading u-boot.img reading u-boot.img U-Boot 2011.09-00002-gd0e52e5 (Apr 14 2012 - 22:13:07) I2C: ready DRAM: 256 MiB WARNING: Caches not enabled No daughter card present NAND: HW ECC Hamming Code selected No NAND device found!!! 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 *** Warning - readenv() failed, using default environment Net: cpsw Hit any key to stop autoboot: 3 ��� 2 ��� 1 ��� 0 SD/MMC found on device 0 reading uEnv.txt ** Unable to read "uEnv.txt" from mmc 0:1 ** reading uImage 3132976 bytes read ## Booting kernel from Legacy Image at 80007fc0 ... Image Name: Linux-3.1.0-00010-g66bfbd2 Image Type: ARM Linux Kernel Image (uncompressed) Data Size: 3132912 Bytes = 3 MiB Load Address: 80008000 Entry Point: 80008000 Verifying Checksum ... OK XIP Kernel Image ... OK OK Starting kernel ...* Is it possible to see the same on USB0 port with any proper modifications.? Thanks and Regards, Siva Prakash Reddy. On Tuesday, October 30, 2018 at 8:19:42 PM UTC+5:30, RobertCNelson wrote: > > On Tue, Oct 30, 2018 at 9:10 AM <[email protected] <javascript:>> wrote: > > > > Hello: > > > > Thanks for the valuable response. > > > > In my case I had created only BOOT partition on my SD Card and I copied > the MLO, U-boot.img and uEnv.txt files. > > > > the content in the uEnv.txt is as follows: > > > > > > uenvcmd=setenv bootargs console=ttyUSB0,115200n8 console=${console} > > echo *** Booting To Baremetal_1 *** > > > > > > Before applying USB power to BBB, SD card is inserted and I pressed and > hold the Switch-2 to boot from SD Card. > > > > But there is no response from the board at USB0 port. > > > > > > Is it problem with uEnv.txt file.? > > > > Are there required for any changes.? > > Plug in a usb serial adapter into the j1 debug port.. did u-boot > actually do what you expected? > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/8db602d6-4638-4377-9e55-8180fcf8723d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
