- Fri Apr 20, 2018 9:32 pm
#199025
I have a Serial Enabled 20x4 LCD LCD-09568 I'm using with a RedBoard. I read about this lcd before buying it and I understand it has some issues. My application is pretty simple and I have it working OK. However, each time I update my test project and download to the RedBoard, the LCD gets garbage characters and appears to lock up.
Various forum posts and the documentation say to use the softwareserial include file "as shown in the example." I've copied the example and it has exactly the same issue. I can take the generic example, make a trivial change to some text to write to the lcd and when I download, I get the garbage chars, then the dreaded two lines of boxes and it's locked up. I have to remove the usb cable to the RedBoard to rest.
I've tried disconnecting the Rx line before downloading, I've tried disconnected the +5v before downloading. Neither of these things work.
Is there any way to work around this issue. I'd like to be able to make changes to my program and download the updated version without killing the LCD every time.
Various forum posts and the documentation say to use the softwareserial include file "as shown in the example." I've copied the example and it has exactly the same issue. I can take the generic example, make a trivial change to some text to write to the lcd and when I download, I get the garbage chars, then the dreaded two lines of boxes and it's locked up. I have to remove the usb cable to the RedBoard to rest.
I've tried disconnecting the Rx line before downloading, I've tried disconnected the +5v before downloading. Neither of these things work.
Is there any way to work around this issue. I'd like to be able to make changes to my program and download the updated version without killing the LCD every time.