PKraszewski
New member
Hello!
I have a problem with a few pieces of CFA635-TFE-KU h1v2 u2v0. It seems related to this thread.
Problem:
All Pre-Rockworks CFA635 work fine for me.
Anything I can do to fix it?
----- EDIT ------
I did some debugging & tracing with delays between commands:
Old version of LCD works as expected.
----- EDIT ------
Cmd 0x16 works, so I'm able to eventually write something to LCD...
Hope this helps.
I have a problem with a few pieces of CFA635-TFE-KU h1v2 u2v0. It seems related to this thread.
Problem:
- OS is Linux
- Device is detected correctly, VID/PID match. This implies USB communication is OK.
- Your original program from this page works partially:
- Program starts, displays welcome banner
- Sets port and baudrate correctly (/dev/ttyUSB0 @ 115200)
- Displays 4 "Timed out waiting for a response." messages on console in place of the ">>>This is line 1<<<" up to ">>>This is line 4<<<" on LCD
- Enters readkey loop
- Displays keypresses correctly.
- What's interesting, clear parameter works correctly - it does clear the screen, but still does not display lines of text.
- My own software hangs waiting for complete frame, I'm rewriting it do dump data on-the-go in both directions.
- Any operation other than clear seems to restart LCD (backlight goes off,LCD contents disappears for a fraction of second, backlight goes on)
All Pre-Rockworks CFA635 work fine for me.
Anything I can do to fix it?
----- EDIT ------
I did some debugging & tracing with delays between commands:
- Cmd 0x06 works, reply comes. LCD blanks.
- Cmd 0x0E works, reply comes, backlight changes.
- Cmd 0x1F does not work, no single byte of reply comes, LCD resets to factory defaults (C-F banner & full backlight)
Old version of LCD works as expected.
----- EDIT ------
Cmd 0x16 works, so I'm able to eventually write something to LCD...
Hope this helps.
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