嵌入式学习（1）---ubuntu12.04（32位）下TQ2440开发板环境搭建

Love The Way You Lie 2022-05-13 02:46 203阅读 0赞

# ubuntu12.04（32位）下TQ2440开发板环境搭建 #

## Step 1.安装arm-linux-gcc交叉编译器 ##

这里我使用的是天嵌tq2440光盘下的 EABI-4.3.3\_EmbedSky\_20100610.tar.bz2安装包。

1、在根目录下解压EABI-4.3.3\_EmbedSky\_20100610.tar.bz2

sudo tar -xvfEABI-4.3.3\_EmbedSky\_20100610.tar.bz2-C/

2、打开/etc/environment文本

sudo vi /etc/environment

并修改PATH,添加蓝色字部分

PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/opt/EmbedSky/4.3.3/bin"

然后在终端输入 arm-linux-gcc-v，如果出现如下信息，说明安装成功！

![Center][]

## Step2:安装minicom ##

1、sudo apt-get install minicom安装minicom

2、设置minicom参数

输入sudo minicom -s

![Center 1][]

选择 ”Serial port setup“，并修改参数如下：

![Center 2][]

由于我们使用USB转串口，这里使用ttyUSB0。

然后再选择"Save setup as dfl"，以后每次打开minicom就不用重新配置参数，

接下来介入开发班的数据先，如果出现下面的信息，表示成功！

\#\#\#\#\# EmbedSky BIOS for SKY2440/TQ2440 \#\#\#\#\#  
Press Space key to Download Mode !  
\#\#\#\#\# Boot for Nor Flash Main Menu \#\#\#\#\#  
\[1\] Download u-boot or STEPLDR.nb1 or other bootloader to Nand Flash  
\[2\] Download Eboot to Nand Flash  
\[3\] Download Linux Kernel to Nand Flash  
\[5\] Download CRAMFS image to Nand Flash  
\[6\] Download YAFFS image to Nand Flash  
\[7\] Download Program (uCOS-II or TQ2440\_Test) to SDRAM and Run it  
\[8\] Boot the system  
\[9\] Format the Nand Flash  
\[0\] Set the boot parameters  
\[a\] Download User Program (eg: uCOS-II or TQ2440\_Test)  
\[b\] Download LOGO Picture (.bin) to Nand Flash  
\[l\] Set LCD Parameters  
\[o\] Download u-boot to Nor Flash  
\[r\] Reboot u-boot  
\[t\] Test Linux Image (zImage)  
\[q\] quit from menu  
Enter your selection:

## Step3:安装dnw2下载工具 ##

1. 安装libusb-dev库

sudo apt-get install libusb-dev

2. 编译dnw2源码

/\* dnw2 linux main file. This depends on libusb.  
\*  
\* Author: Fox <hulifox008@163.com>  
\* License: GPL  
\*  
\*/  
  
\#include<stdio.h>  
\#include<usb.h>  
\#include<errno.h>  
\#include<sys/stat.h>  
\#include<fcntl.h>  
\#include<unistd.h>  
  
\#defineQQ2440\_SECBULK\_IDVENDOR 0x5345  
\#defineQQ2440\_SECBULK\_IDPRODUCT 0x1234  
  
  
structusb\_dev\_handle\*open\_port()  
\{   
structusb\_bus\*busses,\*bus;  
  
usb\_init();  
usb\_find\_busses();  
usb\_find\_devices();  
  
busses=usb\_get\_busses();  
for(bus=busses;bus;bus=bus\->next)  
\{   
structusb\_device\*dev;  
for(dev=bus\->devices;dev;dev=dev\->next)  
\{   
if(QQ2440\_SECBULK\_IDVENDOR==dev\->descriptor.idVendor  
&&QQ2440\_SECBULK\_IDPRODUCT==dev\->descriptor.idProduct)  
\{   
printf("Target usb device found!\\n");  
structusb\_dev\_handle\*hdev=usb\_open(dev);  
if(!hdev)  
\{   
perror("Cannot open device");  
\}  
else  
\{   
if(0!=usb\_claim\_interface(hdev,0))  
\{   
perror("Cannot claim interface");  
usb\_close(hdev);  
hdev=NULL;  
\}  
\}  
returnhdev;  
\}  
\}  
\}  
  
printf("Target usb device not found!\\n");  
  
returnNULL;  
\}  
  
voidusage()  
\{   
printf("Usage: dnw2 <file>\\n\\n");  
\}  
  
unsignedchar\*prepare\_write\_buf(char\*filename,unsignedint\*len)  
\{   
unsignedchar\*write\_buf=NULL;  
structstat fs;  
  
intfd=open(filename,O\_RDONLY);  
if(\-1==fd)  
\{   
perror("Cannot open file");  
returnNULL;  
\}  
if(\-1==fstat(fd,&fs))  
\{   
perror("Cannot get file size");  
gotoerror;  
\}  
write\_buf=(unsignedchar\*)malloc(fs.st\_size\+10);  
if(NULL==write\_buf)  
\{   
perror("malloc failed");  
gotoerror;  
\}  
  
if(fs.st\_size!=read(fd,write\_buf\+8,fs.st\_size))  
\{   
perror("Reading file failed");  
gotoerror;  
\}  
  
printf("Filename : %s\\n",filename);  
printf("Filesize : %d bytes\\n",fs.st\_size);  
  
\*((u\_int32\_t\*)write\_buf)=0x30000000;//download address  
  
\*((u\_int32\_t\*)write\_buf\+1)=fs.st\_size\+10;//download size;  
  
  
\*len=fs.st\_size\+10;  
returnwrite\_buf;  
  
error:  
if(fd!=-1)close(fd);  
if(NULL!=write\_buf)free(write\_buf);  
fs.st\_size=0;  
returnNULL;  
  
\}  
  
intmain(intargc,char\*argv\[\])  
\{   
if(2!=argc)  
\{   
usage();  
return1;  
\}  
  
structusb\_dev\_handle\*hdev=open\_port();  
if(!hdev)  
\{   
return1;  
\}  
  
unsignedintlen=0;  
unsignedchar\*write\_buf=prepare\_write\_buf(argv\[1\],&len);  
if(NULL==write\_buf)return1;  
  
unsignedintremain=len;  
unsignedinttowrite;  
printf("Writing data ...\\n");  
while(remain)  
\{   
towrite=remain>512?512:remain;  
if(towrite!=usb\_bulk\_write(hdev,0x03,write\_buf\+(len\-remain),towrite,3000))  
\{   
perror("usb\_bulk\_write failed");  
break;  
\}  
remain\-=towrite;  
printf("\\r%d%\\t %d bytes ",(len\-remain)\*100/len,len\-remain);  
fflush(stdout);  
\}  
if(0==remain)printf("Done!\\n");  
return0;  
\}

以上就是dnw2的源码，接下来我们进行编译。

gcc dnw2.c -o dnw2 -lusb

3、移动dnw2可执行文件到 /usr/sbin下

sudo dnw2 /usr/sbin

4、下载方式

sudo dnw2 file\_name

[Center]: /images/20220513/97ec18b22ddd4b8d888b2059ca37407d.png
[Center 1]: /images/20220513/f6f11967a3f44f6d865d9f62c47c8625.png
[Center 2]: /images/20220513/c0818bed2dd54cf981a1a2c3358e7f81.png