Ubuntu下搭建TQ2440的程序下载环境

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WangLanguager 2022-12-06 11:24:10

文章标签 终端串口下载文件 ubuntu #include Test 文章分类 虚拟化云计算

我使用的Ubuntu 10.04，以下是我搭建实验环境的过程，其他版本的Ubuntu其搭建过程可能会略有不同，请读者自行查阅相关资料解决。

1.必须使用一款类似于windows下SecureCRT的软件：minicom。先下载minicom：

sudo apt-get install minicom

安装完毕之后，使用如下命令行测试一下：

sudo minicom -s

会出现如下结果：

+-----[configuration]------+

| Filenames and paths |

| File transfer protocols |

| Serial port setup |

| Modem and dialing |

| Screen and keyboard |

| Save setup as dfl |

| Save setup as.. |

| Exit |

| Exit from Minicom |

+--------------------------+

通过光标可以上下选择相应的配置项，按回车即可确定。

由于我使用的是笔记本电脑，所以便遇到USB转串口的问题。首先我们得先检查ubuntu有无USB转串口的驱动（ubuntu中不用安装什么USB转串口驱动）

我发现在/dev下没有ttyUSB0这个文件，www.linuxidc.com不过可以自行创建一个：

sudo mknod /dev/ttyUSB0 c 188 0

如果使用的是串口线，就设置为/dev/ttyS0

然后我们重新进入minicom进行配置：

sudo minicom -s

选择Serial port setup ，进行如下设置：

| A - Serial Device : /dev/ttyUSB0 |

| B - Lockfile Location : /var/lock |

| C - Callin Program : |

| D - Callout Program : |

| E - Bps/Par/Bits : 115200 8N1 |

| F - Hardware Flow Control : No |

| G - Software Flow Control : No |

设置完成之后，选择Save setup as dfl ，这样下次就不用重新配置。

接着插上USB转串口线，重启minicom就能看到

Welcome to minicom 2.4

OPTIONS: I18n

Compiled on Jan 25 2010, 06:49:09.

Port /dev/ttyUSB0

Press CTRL-A Z for help on special keys

接着打开TQ2440的电源，就能看到：(此时我是从NAND Flash下启动)

<***************************************>

TQ2440 Test Program

www.linuxidc.com

<***************************************>

这就说明你的板子已经跟电脑连接在一起了。

minicom有一个很不好的地方，就是你一拉大或者缩小终端，屏幕就会被清空，这点要注意一下。

如果你要进入下载模式，那就从NOR Flash重新启动开发板，这时候会出现u-boot的信息：

##### Boot for Nor Flash Main Menu #####

##### EmbedSky USB download mode #####

[1] Download u-boot or STEPLDR.nb1 or other bootloader to Nand Flash

[2] Download Eboot (eboot.nb0) to Nand Flash

[3] Download Linux Kernel (zImage.bin) to Nand Flash

[5] Download CRAMFS image to Nand Flash

[6] Download YAFFS image (root.bin) 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

[n] Enter TFTP download mode menu

[o] Download u-boot to Nor Flash

[r] Reboot u-boot

[t] Test Linux Image (zImage)

[q] quit from menu

Enter your selection:

（如果没有出现的话就按一下复位键）

这时候不要忘了插上USB host，不然在下载的过程就会出现USB host is not connected now的情况。

现在我们需要一个Linux下的类似于DNW的工具，这个工具没有windows下的图形界面，而且代码非常之精简，直接编译之后便可使用：

我们先新建一个名为DNW.c的文件，往里面复制以下代码：

/* 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>
 #define QQ2440_SECBULK_IDVENDOR 0x5345
 #define QQ2440_SECBULK_IDPRODUCT 0x1234
 struct usb_dev_handle * open_port()
 {
 struct usb_bus *busses, *bus;
 usb_init();
 usb_find_busses();
 usb_find_devices();
 busses = usb_get_busses();
 for(bus=busses;bus;bus=bus->next)
 {
 struct usb_device *dev;
 for(dev=bus->devices;dev;dev=dev->next)
 {
 printf("idVendor:0x%x\t,ipProduct:0x%x\n",dev->descriptor.idVendor,dev->descriptor.idProduct);
 if( QQ2440_SECBULK_IDVENDOR==dev->descriptor.idVendor
 && QQ2440_SECBULK_IDPRODUCT==dev->descriptor.idProduct)
 {
 printf("Target usb device found!\n");
 struct usb_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;
 }
 }
 return hdev;
 }
 }
 }
 printf("Target usb device not found!\n");
 return NULL;
 }
 void usage()
 {
 printf("Usage: dnw2 <file>\n\n");
 }
 unsigned char* prepare_write_buf(char *filename, unsigned int *len)
 {
 unsigned char *write_buf = NULL;
 struct stat fs;
 int fd = open(filename, O_RDONLY);
 if(-1==fd)
 {
 perror("Cannot open file");
 return NULL;
 }
 if(-1==fstat(fd, &fs))
 {
 perror("Cannot get file size");
 goto error;
 }
 write_buf = (unsigned char*)malloc(fs.st_size+10);
 if(NULL==write_buf)
 {
 perror("malloc failed");
 goto error;
 }
 if(fs.st_size != read(fd, write_buf+8, fs.st_size))
 {
 perror("Reading file failed");
 goto error;
 }
 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;
 return write_buf;
 error:
 if(fd!=-1) close(fd);
 if(NULL!=write_buf) free(write_buf);
 fs.st_size = 0;
 return NULL;
 }
 int main(int argc, char *argv[])
 {
 if(2!=argc)
 {
 usage();
 return 1;
 }
 struct usb_dev_handle *hdev = open_port();
 if(!hdev)
 {
 return 1;
 }
 unsigned int len = 0;
 unsigned char* write_buf = prepare_write_buf(argv[1], &len);
 if(NULL==write_buf) return 1;
 unsigned int remain = len;
 unsigned int towrite;
 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");
 return 0;
 }