ultraembedded / core_dbg_bridge

UART -> AXI Bridge

UART -> AXI Debug Bridge

Github: http://github.com/ultraembedded/cores

This component provides a bridge from a standard UART interface (8N1) to a AXI4 bus master & GPIO interface.
This can be very useful for FPGA dev boards featuring a FTDI UART interface where loading memories, peeking, poking SoC state is required.

Testing

Used extensively on various Xilinx FPGAs over the years.

Configuration

• CLK_FREQ - Clock (clk_i) frequency (in Hz).
• UART_SPEED - UART baud rate (bps)
• AXI_ID - AXI ID to be used for transactions

Software

Included python based utils provide peek and poke access, plus binary load / dump support.

Examples:

# Read a memory location (0x0)
./sw/peek.py -d /dev/ttyUSB1 -b 115200 -a 0x0

# Write a memory word (0x0 = 0x12345678)
./sw/poke.py -d /dev/ttyUSB1 -b 115200 -a 0x0 -v 0x12345678