Hi,
We have DM8148 evaluation module with us. We have set the boot settings in such a way that booting is to be done from the SD card. After power On the module, the back light of LCD/TFT on the EVM is not ON also we are not getting any messages to the console port. Please let us know what could be the reason for this. What other things to be checked.
Regards,
Rajeswari N
Hi Rajeswari,
Product Design Medha said:We have DM8148 evaluation module with us.
Do you mean DM8148 TI EVM?
Product Design Medha said:After power On the module, the back light of LCD/TFT on the EVM is not ON
Do you see the menu icons on the LCD screen?
Product Design Medha said:booting is to be done from the SD card
Do you use the SD card that was shipped with the EVM? Or you have create one? Do you follow the below user guide?
ti-ezsdk_dm814x-evm_5_05_02_00/docs/DM814x_EZ_Software_Developers_Guide.pdf, section 6.6 How to create an SD card
Make sure you have terminal program (picocom, minicom) installed on your host machine (i.e. Linux Ubuntu desktop PC). Make sure you have serial-to-USB cable connected between EVM (P2 - CENT DB9) and host machine (USB port). Check where exactly on the host machine this cable is detected/mounted. For example, on my desktop PC, it is /dev/ttyUSB0
host:~$ ls -al /dev/ttyUSB*
crw-rw---- 1 root dialout 188, 0 2015-05-20 15:18 /dev/ttyUSB0
I do not have /dev/ttyUSB0 when I plug out the serial-to-USB cable from the desktop PC.
Then I start the terminal session with picocom:
host:~$ picocom -b 115200 /dev/ttyUSB0 --send-cmd "sx -vv"
Regards,
Pavel
