Arm+linux Embedded development Environment Construction

These are from the beginning of January to learn the problems encountered in Arm+linux notes, I feel very useful, so share out!

Because there is no teacher to teach, their own pondering the problems encountered a lot, welcome to exchange!

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0-point Drift Team: dust-sealed wave

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0. Platform Setup
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Download VMware11
Download Ubutun 14
Installation

Solve gedit Chinese garbled characters
Terminal input:

Gsettings set org.gnome.gedit.preferences.encodings auto-detected "[' GB18030 ', ' GB2312 ', ' GBK ', ' UTF-8 ', ' BIG5 ', ' Current ', ' UTF-16 '] "

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1.DNW Tool Installation
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sudo apt-get install Libusb-dev

Dnw.c

#include <stdio.h>
#include <usb.h>
#include <errno.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>

#define Tq2440_secbulk_idvendor 0x5345
#define TQ2440_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)
{
if (Tq2440_secbulk_idvendor==dev->descriptor.idvendor
&& tq2440_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:DNW <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) = 0x30008000; 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;
}

5 compilation: Gcc-o DNW Dnw.c-lusb

6. Copy the file to the/usr/local/bin directory
# sudo CP dnw/usr/local/bin

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2. ARM-LINUX-GCC Installation
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sudo apt-get install Gcc-arm-linux-gnueabi

Arm-linux-gnueabi-gcc-v

Remember: At the same time, modify the makefile to:
Arm-linux-gnueabi-gcc-g-c-o led_on.o led_on. S
Arm-linux-gnueabi-ld-ttext 0x0000000-g Led_on.o-o led_on_elf
Arm-linux-gnueabi-objcopy-o binary-s led_on_elf Led_on.bin

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3. Linux Serial Assistant Installation
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sudo apt-get minicom

Ctrl+a+z
Set serial port non-flow control: ttyUSB0

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4. minicom Sending files
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CTRL + S Select the file to send

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5. Make Menuconfig * * * [scripts/kconfig/dochecklxdialog] compile kernel
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sudo apt-get install Ncurses-dev

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6. Undefined reference to ' __stack_chk_fail '
Undefined reference to ' __stack_chk_guard '
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Cflags was added-fno-stack-protector.

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7. GUI Development
Download qt-creator-opensource-linux-x86_64-3.4.0
Download Qtcreator

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8.u-boot porting Linux Kernel porting

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Write Driver xx_dev.c (GPIO_DEV.C) in the corresponding directory
Then write the application xx.c (GPIO.C)

In the same directory:

Kconfig
Adding support for the kernel in the kernel source code

Config tq2440_gpio_test
TriState "Embedsky sky2440/tq2440 Board GPIO Test (Control LED)"
Depends on arch_s3c2440
Default Y if arch_s3c2440
Help
GPIO control for Embedsky sky2440/tq2440 Board.

Makefile: The kernel directory is modified as a directory for the Development Board

Configure the driver to compile
obj-$ (config_tq2440_gpio_test) + = DEV_GPIO.O

Configuring the kernel: Make Menuconfig

Select it as M module
Compiling kernel make Zimage
Compile module Make subdir = Drivers/char/modules
Locate the Xx.ko in the corresponding directory to copy it to the Development Board
Insmod Xx.ko
Rmmod Xx.ko
Dmesg

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Arm+linux Embedded development Environment Construction