vga_interface_with_FPGA

Interfacing Tang primer with VGA display.

Table of Content:

• Getting Started With Tang Primer
• File Structure
• IO info
• Circuit Diagram
• TO DO
• Reference

Getting Started With Tang Primer:

• Install The TD IDE
• Tang FPGA Examples
• Tang Primer GPIO and Project Info

File Structure:

├── constraint
│   └── io.adc
├── prj
│   ├── simulation
│   ├── td_2021-01-30_22-28-34.log
│   ├── td_2021-01-31_17-46-24.log
│   ├── td_2021-02-02_21-38-20.log
│   ├── td_2021-02-02_21-38-33.log
│   ├── vga_test_pattern.al
│   ├── vga_test_pattern.bit
│   ├── vga_test_pattern_gate.area
│   ├── vga_test_pattern_gate.db
│   ├── vga_test_pattern_phy.area
│   ├── vga_test_pattern_pr.db
│   ├── vga_test_pattern_rtl.area
│   └── vga_test_pattern_rtl.db
├── README.md
└── src
    ├── a.out            //Iverilog Output
    ├── a.vcd            //GTKWave Output
    ├── sync_count.v     //Produces count value from sync signals
    ├── testbench.v      //TestBench to test top module
    ├── test_pattern_gen.v //Test pattern Generator
    ├── vga_sync_porch.v   //Module to add porch in sync signals
    ├── vga_sync_pulse.v   //sync pulse produce using clock
    └── vga_test_pattern_top.v //Top module with pll

IO info:

#System Clock
set_pin_assignment	{ i_clk }	{ LOCATION = K14; IOSTANDARD = LVCMOS33; }

#VGA Clock
set_pin_assignment	{ o_VGA_CLK }	{ LOCATION = P5; }

#VGA Control Signals
set_pin_assignment	{ o_VGA_vsync }	{ LOCATION = C16; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }
set_pin_assignment	{ o_VGA_hsync }	{ LOCATION = B16; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }

#VGA Red
set_pin_assignment	{ o_VGA_red_0 }	{ LOCATION = C5; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }
set_pin_assignment	{ o_VGA_red_1 }	{ LOCATION = A3; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }
set_pin_assignment	{ o_VGA_red_2 }	{ LOCATION = A4; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }

#VGA Green
set_pin_assignment	{ o_VGA_green_0 }	{ LOCATION = B10; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }
set_pin_assignment	{ o_VGA_green_1 }	{ LOCATION = C9; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }
set_pin_assignment	{ o_VGA_green_2 }	{ LOCATION = B6; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }

#VGA Blue
set_pin_assignment	{ o_VGA_blue_0 }	{ LOCATION = B15; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }
set_pin_assignment	{ o_VGA_blue_1 }	{ LOCATION = A14; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }
set_pin_assignment	{ o_VGA_blue_2 }	{ LOCATION = B14; IOSTANDARD = LVCMOS33; DRIVESTRENGTH = 20; }

#Pattern Select
set_pin_assignment	{ sel0 }	{ LOCATION = T7; }
set_pin_assignment	{ sel1 }	{ LOCATION = R7; }

Circuit Diagram:

TO DO:

• Pong Game

Reference:

• Nandland Tutorials
• piotr-go Repo