I’ve got a few of the Grove Serial LCDs and was wondering whether the firmware is available. I was thinking it would be useful to add a couple of functions to the AT89S52 already on the controller board rather than have a separate board control it. I’d want to link this microcontroller to a serial keypad using the existing port.
We have burn the firmware to the AT89S52, and we have libraries to control it via Seeeduino. So, if you wanna add a keypad to the board, you need modify the firmware and also, you need make a schematic of keypad which is compatible with the board via the existing port. oh, i don’t think this is a easy work.
