FPGA remote slow control via UART 16550 :: Overview
Other project properties
Control the activity and status of your FPGA by targeting a memory mapped space inside it.
Simple three steps access procedure:
- -- Write words of 2 bytes address and 4 bytes data.
- -- Ask for an update targeting the update register (default 0x8000 0x00000000)
- -- Read words of 2 bytes address and 4 bytes data.
The code comes plug and play:
- * the whole uart initialization process is automatic
- * 4 pins interface to the outsideworld: serial tx, serial rx, uart clock, hard reset
- * up to 2^16 32 bit wide registers for user logic control and monitor
Declare the registers you want to read and write in the top level entity:
- + the rest will be handled automatically by FSMs.
- + almost no documentation is required.
- + no knowledge of the internals of the core required.
- + the top entity is self-explanatory.
Remotely control the logic from a PC:
- ~ Under Windows use RealTerm to simply send and receive HEX commands (realterm.sourceforge.net).
- ~ Simple Python script to drive the uart via command line in linux (see software details tab above).
- ~ TCP/IP to UART bridging is just around the corner using inexpensive external devices.
crossplatform compatible (tested on Xilinx Virtex-5 and Altera Stratix-4 devices).
Tested up to 1 Mbps with a 29.4912 MHz oscillator.
>> Give comments and feedback using the official core thread on the OpenCores forum:
>> Tell us what you do with our core posting an answer in the bug tracker ticket below