Hey guys, I am pretty experienced with the arduino so far, but I do have a problem with the crumbuino mega at the moment.
The integrated rs485 seems to works fine from a coding point of view, as long as I just want to write on the 485 bus. This proves, that the bus setup is done right and the pins are connected the right way.
But reading on the bus doesn't work. Any ideas what could be wrong? Coding itself isn't the problem it seems to be that case that I need to maybe set a read write pin to change from writing to reading mode, but I do not find the pin to set, or anything else that could cause the problem.
For a test of the code, I use the internal serial bus via USB connector which proves that read and write code works fine on that rs485 connection....