Targeting Handel-C for the DE2 Board

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Targeting Handel-Cfor the DE2 Board

• Presented by
• Vincent Lai
• Supervised by
• Professor Cheung

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Aim

• Program the DE2 board in a C-based language
• A Library of drivers that support the hardware on
  the DE2 board
• A Manual and instructions for using the Library

3
Achievements

• FPGA design framework
• Program in Handel-C
• Hardware synthesis in Quartus II
• A library targeting the DE2 system
• Drivers PS/2, RAM, VGA
• Interface with VHDL components

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Contents

• Hardware Software
• Development
• Demonstration
• Summary

Hardware Software Development
Demonstration Summary
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Hardware and Software

• Hardware
• Altera DE2 board
• Software
• Quartus II
• DK Design Suite
• Programming Language
• Handel-C
• VHDL

Hardware Software Development
Demonstration Summary
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Altera DE2 Board

• A Development board with a Cyclone II FPGA
• Memory
• Flash memory
• SRAM
• SDRAM
• VGA
• Switches
• PS/2 Mouse
• 16x2 LCD module
• 7-Segment Displays LEDs

Hardware Software Development
Demonstration Summary
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What is Handel-C?

• a C-based language
• not a hardware description language it supports
  abstractions common for software programmers
• Reasonably complex system can be design easily
• High level yet allow description of sequential
  and parallel logic

Hardware Software Development
Demonstration Summary
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Contents

• Hardware Software
• Development
• Demonstration
• Summary

Hardware Software Development
Demonstration Summary
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Development Timeline
Hardware Software Development
Demonstration Summary
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Library Components

• Library file .hcl
• Header file .hch
• VHDL Functions Components
• PS/2 mouse
• Video Driver
• LCD module

Hardware Software Development
Demonstration Summary
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Library file .hcl

• Generated by using DK Library project
• Create a .hcc file containing macros
• Compile the project to obtain the .hcl file
• Example macro procedure

macro proc DE2SetLEDGs(mask) interface
bus_out() LEDG(mask) with
data"Y12","Y18","AA20","U17","U18","V18","W19",
"AF22","AE22"
Hardware Software Development
Demonstration Summary
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Header file .hch

• Describe the macros in the library
• Example

typedef signal unsigned 9 DE2_LEDG_MASK extern
macro proc DE2SetLEDGs(mask)
Hardware Software Development
Demonstration Summary
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Interfacing with VHDL

• Some functions are written in VHDL
• It is useful to interface with VHDL code
• Example

interface LCD_DISPLAY(unsigned 1 LCD_RS,
unsigned 1 LCD_E, unsigned 1 LCD_RW, unsigned
8 DATA_BUS) LCD(unsigned 1
re_setkey0.in, unsigned 1 clk_50Mhz
clk_in.in, unsigned 256 Hex_Display_Dataline)
with vhdl_type"std_logic_vector"
Hardware Software Development
Demonstration Summary
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Example Users Program

• in the sample code folder

set clock external "N2" include
"DE2.hch" void main(void) DE2_SW_MASK SW
do DE2SW(SW) //read inputs from
the toggle switches DE2SetLEDRs(SW) //sho
ws the status of the switches on LEDs
while(1)
Hardware Software Development
Demonstration Summary
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Designing with the Library?
Hardware Software Development
Demonstration Summary
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Difficulties

• Timing of the RAM
• Using the SRAM as a frame buffer
• 640x480 24-bit colour 921600 byte
• 640x480 16-bit colour 614400 byte
• 640x480 8-bit grayscale 307200 byte
• Storing a raw image in the 1M-byte Flash memory

Hardware Software Development
Demonstration Summary
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Results

• A library with the desired drivers
• A detailed Manual and instructions
• Sample codes

Hardware Software Development
Demonstration Summary
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Contents

• Hardware Software
• Development
• Demonstration
• Summary

Hardware Software Development
Demonstration Summary
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Contents

• Hardware Software
• Development
• Demonstration
• Summary

Hardware Software Development
Demonstration Summary
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Future Development

• Complete the development of drivers for the DE2
  board
• Portable between Devices
• Useful functions
• Image processing
• FIFO for the SDRAM

Hardware Software Development
Demonstration Summary
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Achievements

• FPGA design framework
• Program in Handel-C
• Hardware synthesis in Quartus II
• A library targeting the DE2 system
• Drivers PS/2, RAM, VGA
• Interface with VHDL components

Hardware Software Development
Demonstration Summary