I was working on an LCD 7" touschscreen app for raspberry, which has a keyboard, mouse and touch handlers connected via usb. 3 days ago, I had to reflash the pi with Raspbian OS Lite 32bit which is the one my IDE (embedded wizard) needs.
From that point until now, I can't get the usbs, specifically the touch handle to work. They get power, since for the keyboard and mouse the leds light up, but I have some issues:
Once flashed, apt update and upgrade, but not rpi-upgrade initially, although tested after that command afterwards with no success
No USB device is recognized in lsusb
event0 to event4 present with evtest, but none receives a signal on touch
I didn't test fully changing the sd card, just reflashing every time.
This is what I did try:
No code from mine, testing always on virgin raspberrys and running evtest
Different and more stable power sources
Use a different lcd 7" screen from a different manufacturer, proven to be in working condition beforehand
Use a different Raspberry (tried with both 4b and 5)
Change cables
Reflash the SD with full, lite, 32 and 64 bits.
Rewire the DSI connections on the back of the screens.
Tested all 4 ports on both raspberrys and I'm not getting anything on both
Connections:
Power1 from outlet to screen, Power2 from screen to rapi, touch handler linked to the FFC of the screen (under the raspberry, and USB touch handler connected to 3.0 usb
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From that point until now, I can't get the usbs, specifically the touch handle to work. They get power, since for the keyboard and mouse the leds light up, but I have some issues:
Once flashed, apt update and upgrade, but not rpi-upgrade initially, although tested after that command afterwards with no success
No USB device is recognized in lsusb
event0 to event4 present with evtest, but none receives a signal on touch
I didn't test fully changing the sd card, just reflashing every time.
This is what I did try:
No code from mine, testing always on virgin raspberrys and running evtest
Different and more stable power sources
Use a different lcd 7" screen from a different manufacturer, proven to be in working condition beforehand
Use a different Raspberry (tried with both 4b and 5)
Change cables
Reflash the SD with full, lite, 32 and 64 bits.
Rewire the DSI connections on the back of the screens.
Tested all 4 ports on both raspberrys and I'm not getting anything on both
Connections:
Power1 from outlet to screen, Power2 from screen to rapi, touch handler linked to the FFC of the screen (under the raspberry, and USB touch handler connected to 3.0 usb
Statistics: Posted by yodamus — Fri Sep 27, 2024 1:57 pm — Replies 0 — Views 23