NANOPC-T3 Development Board Kernel application compilation and operation (using the ADB method upload)

Writing the simplest application

#include <stdio.h>


void Main (int argc, char *argv[])
{
int i = 0,j = 0;
for (i=0;i<10;i++)
{
printf ("Hello world..............\r\n");
for (j=0;j<100000;j++)
{};
}
}

and then compile

Arm-linux-gcc-o TST Tst.c-static

Generate TST files and copy them to the ADB folder on the PC side

Then open the ADB and connect to the Android Development Board

Using commands

ADB push tst/system/

The TST file will be uploaded to the system folder of the Linux kernel, if it appears

Failed to copy ' TST ' to '/system/': Read-only file system

First exit the ADB, then remount, namely

ADB remount

After seeing Remount succeeded

Then execute ADB push tst/system/to succeed

Through the Serial printing window into the kernel of the system folder, you can see the TST file, chmod 777 TST Modify Permissions

And then run./tst

You can see the print

Hello world ... .......
Hello world ... .......
Hello world ... .......
Hello world ... .......
Hello world ... .......
Hello world ... .......
Hello world ... .......
Hello world ... .......
Hello world ... .......
Hello world ... .......