I'm looking for an inexpensive industrial controller, to help convert an old RS485 based bus-system to something useable for modern computers -> ethernet, USB or RS232.The old protocol is tied to a very tight time-schedule, which requires direct access to the UART registers and programming directly to the hardware. Response times must in some cases be about 600us.An Arduino could fulfill the task, but I'm looking for a finished product, which will be available for 10+ years to come.Spec. wise I'm looking for something like this:MicroController (C/C++ programmable) - must allow UART register access!!Some sort of programming interface (USB, JTAG, others).1x Ethernet, 10baseT, with RJ-45 Female Jack.1x USB (min 1.1) to be used for CDC communication, with USB female Jack.1x RS 232, capable of 115k baud, with 9-pin male D-Sub port.1x RS 485, isolated, capable of 115k baud, with four pin screw terminals. Power-supply jack, unless it's possible to use the USB port for power-supply.I'm expecting to buy more than 50 units per year.I've been searching the web, and found products like the ICP-CON controllers, but they do not provide direct register access to their UART.
Suggestions for an Inexpensive industrial programmable controller with ethernet, usb, RS485 and RS232
ethernet;microcontroller