[ARM Application] Solve the problem of LCD screen automatically closing and closing without changing the kernel code-EEWORLD

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It can be implemented in the application. Do not change the kernel driver. Write a small program:
#include
#include
#include
void keep_LCD_screen(void)
{
       int fd;
       fd = open("/dev/tty0", O_RDWR);
       write(fd, "\033[9;0]", 8);
       close(fd);
}
int main(void)
{
       keep_LCD_screen();
       return 0;
} Compile this application to generate an executable file. If it is named "LCD_screen", download "LCD_screen" to the /bin directory of the development board, and then add the following command $./bin/LCD_screen
       to the rcS startup configuration file in the root file directory /etc/init.d.        Restart the kernel and the LCD will not turn off automatically. You can implement it in the application when you want to turn it off. It is definitely not a wise approach to block the blank_screen_t() function. Once you block blank_screen_t(), sometimes some applications will want to turn off the display, and you will not be able to implement it at this time. You can only change the kernel.

Keywords：ARM Reference address：[ARM Application] Solve the problem of LCD screen automatically closing and closing without changing the kernel code

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