Description of the "Linux" development environment

PC side: Ubuntu/linux Mint

Development Board: Qq2440v3, Guangzhou friendly arm. Resources are as follows:

->CPU processor

???? -Samsung s3c2440a, frequency 400MHz, Max 533Mhz

SDRAM Memory:

???? -On board 64M SDRAM

???? -32bit Data bus

???? -SDRAM clock frequency up to 100MHz

FLASH Storage

???? -In-board 64M Nand Flash, power-down non-volatile

???? -In the board 2M nor Flash, the power-down nonvolatile, has installed the BIOS

->LCD Display

???? -Integrated 4-wire resistive touchscreen interface on board, direct connection to four-wire resistive touch screen

???? -Supports black-and-white, 4-level grayscale, 16-level grayscale, 256-color, 4096-color STN LCD, sizes from 3.5 "to 12.1

???? , the screen resolution can reach 1024x768 pixels;

???? -Support black-and-white, 4-level grayscale, 16-level grayscale, 256 color, 64K color, True Color TFT LCD screen, size from 3.5 inch

???? To 12.1 inches, the screen resolution can reach 1024x768 pixels;

???? -Standard configuration for NEC 256K color 240x320/3.5 inch TFT color LCD screen with touch screen;

???? -The board leads to a 12V power connector, which can be a 12V CCFL backlight module (inverting) for large size TFT LCD

???? Power supply.

Interfaces and resources

???? -1 x 10M Ethernet RJ-45 Interface (with CS8900 network Chip)

???? -3 serial ports

???? -1 x USB Host

???? -1 x USB Slave type B interface

???? -1 x SD card Storage interface

???? -1 channel stereo audio output interface, all the way microphone interface;

???? -1 x 2.0mm pitch 20 pin Standard JTAG interface

???? -4 USER Leds

???? -4 USER Buttons

???? -1 x PWM control buzzer

???? -An adjustable resistor for AD analog-to-digital conversion testing

???? -1 x i²c bus AT24C08 chip for i²c bus test

???? -1 x 20pin Camera interface

???? -Onboard real-time clock battery

???? -Power connector (12V) with power switch and indicator

System Clock Source

???? -12M Passive Crystal oscillator

Real Time Clock

???? -Internal real-time clock (with backup lithium battery)

Extension interface

???? -1 x Pin 2.0mmGPIO interface

???? -1 x Pin 2.0mm system bus Interface

Description of the "Linux" development environment